TH8300 Programmable DC Electronic Load Instruction Manual

TH8300 Programmable DC Electronic Load

Specifications

• Model: TH8300/TH8310
• Type: Programmable DC Electronic Load

Product Usage Instructions

1. Introduction to the Instrument

This section provides an overview of the instrument, including conditions of use, safety guidelines, and warm-up instructions.

1.1 Introduction

Get familiar with the basic features and functions of the TH8300/TH8310 Programmable DC Electronic Load.

1.2 Conditions of Use

• Power Connection: Ensure proper power connection as described in section 1.2.1.
• Environmental Conditions: Operate the instrument within specified environmental conditions (refer to 1.2.2).
• Cautions: Follow all safety precautions mentioned in section 1.2.3.
• Warm-up: Allow the instrument to warm up as detailed in section 1.2.4 before use.

1.3 Safety and Signs

Understand the symbols, signs, laws, and regulations related to operating the instrument safely.

2. Overview

This section covers the front and rear panel descriptions, appearance of TH8310, display area definition, basic operation modes, and start-up instructions.

2.1 Front Panel Description

Learn about the controls and indicators located on the front panel of the instrument.

2.2 Rear Panel Description

Understand the connections and features available on the rear panel of the instrument.

2.3 TH8310 Appearance

Visualize the physical appearance of the TH8310 model for easy identification.

2.4 Display Area Definition

Understand the information displayed on the screen of the instrument.

2.5 Basic Operation

• Regular Mode: Learn how to operate in the regular mode (section 2.5.1).
• Advanced Mode: Explore the advanced mode functionalities (section 2.5.2).

2.6 Start-up Instructions

Follow the steps provided to correctly start up the instrument for operation.

3. Overview of Instrument Functions

This section details the functions and modes available on the instrument.

3.1 Introduction

Get an overview of the instrument’s functions and capabilities.

3.2 Model Introduction

• CC Constant Current Mode: Understand how to use the constant current mode (section 3.2.1).
• CR Constant Resistance Mode: Learn about operating in constant resistance mode (section 3.2.2).

FAQs

• Q: What should I do if the instrument displays an error message?
  • A: If you encounter an error message, refer to the troubleshooting section of the user manual or contact customer support for assistance.

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OPERATION MANUAL TH8300/TH8310
Programmable DC Electronic Load

Introduction to the instrument

Thank you for purchasing and using our products. Before you use this instrument, please first confirm the matters in the last chapter of the manual “Set and Warranty”. If there is any non-conformity, please contact us as soon as possible to protect your rights and interests.

1.1 Introduction
TH8300/TH8310 series programmable DC electronic load, the main functions and advantages are as follows:
The maximum power of TH8300 whole machine is 2500W, and the maximum current of inline machine is 400A.
The maximum power of TH8310 whole machine is 1000W, and the maximum current of inline machine is 160A.
Module maximum power is 500W, maximum current is 80A, maximum voltage is 600V.
A single whole machine supports up to five modules in parallel and up to ten channels.
Connect via CAN interface and support up to four whole machines online.
500kHz ADC sampling rate.
Dynamic pull mode up to 50 kHz.
24-bit color 2.8-inch color LCD display.
English and Chinese operation interface.
Smart Fan System.
Support power-on hold function.
Support timer function.
Support RS232, USB, LAN, GPIB interfaces for easy data communication with PC.
Support signal output function (SYSTEM I/O).
Electrically isolated, external inputs and outputs.
Supports over-current protection (OCP), over-voltage protection (OVP), over- power protection (OPP), over-temperature protection (OTP), reverse polarity protection (REV), and low-voltage protection (LVP).
The TH8300 series programmable DC electronic loads include the following types of modules (TH8301-80-20, TH8301A-80-20 is a dual-channel module):

Frame Model TH8300 TH8310

Maximum number of channels supported 5 2 Table 1-1 Frame Model

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Chapter 2

Module Model

Voltage

Current

Power

TH8301-80-20

80V

20A

100W*2

TH8301A-80-20

80V

20A

200W*2

TH8302-80-40

80V

40A

200W

TH8303-80-60

80V

60A

300W

TH8304-80-80

80V

80A

400W

TH8305-80-80

80V

80A

500W

TH8302-600-10

600V

10A

200W

TH8303-600-15

600V

15A

300W

TH8305-600-30

600V

30A

500W

Table 1-2 Main specifications of each model module

1.2 Conditions of use

1.2.1 Power connection

1. Supply voltage range: TH8300 90~130VAC or 175~253VAC.
   TH8310 100VAC or 220VAC, switchable via rear panel switch. 2) Power supply frequency range: 47~63Hz.
2. Power supply range: 300VA max.
3. The power input phase L, zero N and ground E should be the same as the power plug of this instrument.
   1.2.2 Environmental conditions
   The TH8300 series programmable DC electronic load is only allowed to be used indoors and in low condensation areas, and the general environmental requirements of this instrument are shown in Table 1-3. The fan speed of TH8300 series programmable DC electronic load changes intelligently with the pulling power, and the instrument stops the pulling current when the temperature reaches the over-temperature protection trigger value.

Environmental conditions Operating temperature Operating humidity
Storage temperature
Altitude
Pollution degree
Security Level

Requirements
0~40
10%~90% (non-condensing) -20°C~70°C Operating at altitudes up to 2000 m Pollution degree 2
Safety Category II

Table 1-3 Instrument environmental requirements

1.2.3

Cautions

1. Please do not use it in adverse environment such as dusty, vibration, direct sunlight, corrosive gas, explosive gas, steam, etc.
2. Do not use the equipment that has been damaged. Before using the equipment, check its housing for cracks. Please use the cable provided to
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Chapter 2
connect the equipment. Before operating the instrument, you should make sure that the AC power supply is well grounded.
3) Before connecting the device, check all security markings on the device.
4) Use wires with proper load ratings. All load wires must have the capacity to carry the maximum short-circuit output current of the power supply without overheating. If there are multiple loads, each pair of load wires must be able to safely carry the full rated short-circuit output current of the power supply.
5) Do not install replacement parts on the instrument yourself or perform any unauthorized modifications.
6) Do not use this equipment with the cover removed or loose.
7) The use of this instrument on life support systems or any other equipment with safety requirements is strictly prohibited.
8) Please keep a good ventilation around the four sides of this instrument to avoid overheating of the instrument. Do not block the ventilation holes of the equipment to avoid the internal temperature rising and affecting the accuracy.
9) Please use a dry cloth to clean the device housing, do not clean the inside of the instrument.
10) Do not switch the instrument on and off frequently to avoid loss of stored data.
11) This instrument has been carefully designed to reduce noise interference due to the input from the AC power supply terminal, however, it should still be used in a low noise environment as much as possible. If this cannot be avoided, please install a power supply filter.
12) If the instrument is not used for a long time, please put it in the original packing box or similar case. Store in a ventilated room at a temperature of 5°C to 40°C and a relative humidity of not more than 85% RH. The air should not contain harmful impurities that corrode the meter and should be protected from direct sunlight.
1.2.4 Warm-up
To ensure accurate measurement, the warm-up time should be at least 30 minutes.
1.3 Safety and Signs
1.3.1 Symbols and Signs

ON (power closed)

Protective earth terminal

OFF (power off)

Grounding terminal

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Chapter 2

Warning Sign

Ground connection end identification

Electric shock hazard sign

Table 1-4 Basic Conformity and Marking

The CE mark indicates that the product complies with all relevant European legislation (if it carries the year, it indicates the year in which this design was approved).

This apparatus complies with the labelling requirements of the WEEE Directive (2002/96/EC) and this additional product label indicates that this appliance/electronic product must not be disposed of in household waste. According to the classification of equipment in Annex I of the WEEE Directive, this apparatus belongs to the “monitoring category”.

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Overview

Chapter 2

2.1 Front Panel Description

The front panel of TH8300 series programmable DC electronic load is shown in Figure 2-1.

Figure 2-1 Front Panel

Marking 1 2 3 4 5 6 7 8 9

Name Power Switch Trademark and model USB flash drive interface Current terminal Vsense Terminals Module Model LCD Display Menu key Module function key

10

Knob

Table 2-1 Front Panel Description

Function Instrument power on Introduction of instrument models Upgrade firmware version Power connection via current terminal Remote voltage measurement terminal Introduction of module models Display settings and output Response menu function Switch each function module and pull the load current Adjust the set value or move the cursor

2.2 Rear Panel Description
The rear panel of TH8300 series programmable DC electronic load is shown in Figure 2-2.

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Chapter 2

Figure 2-2 Rear Panel

Marking 1
2 3
4 5
6 7 8 9

Name

Function

RS232 interface
LAN port

serial RS232 serial communication interface for on-line communication with PC.
LAN port communication for online communication with computers.

System Interface

Bus CAN interface for on-line connection between whole machines.

USB Interface USB Device interface for online communication with PC.

System Interface

I/O Signal input and output

GPIB Interface GPIB interface for on-line communication with PC.

Fuse

Protecting the machine

Power outlets Connecting power

Fans

Heat Dissipation

Table 2-2 Rear Panel Description

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Chapter 2
2.3 TH8310 appearance
Figure 2-3 TH8310 Front Panel
Figure 2-4 TH8310 Rear Panel
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Chapter 2
2.4 Display area definition
The TH8300 series programmable DC electronic load adopts a 24-bit color 2.8-inch color LCD screen with a resolution of 320×240. The display is divided into the following display areas, as shown in Figure 2-5.
Figure 2-5 Description of the display area 1) Title area
This area indicates the current mode. 2) Measurement results display area
This area displays the results of the tested parameters. 3) Shortcut setting area
This area is used for quick settings in general mode. 4) Menu display area
This area displays the function menu, quick setup mode.
2.5 Basic operation 2.5.1 General mode

1. Set the general mode: Press Mode to select the mode. 2) Pull load current: Press Load.
   2.5.2 Advanced Mode
2. Set advanced mode: Press ADVA to select the mode. 2) Pull load current: Press Load.
   2.6 Power on instructions
   Press the power switch at the lower left corner of the front panel of the instrument, the instrument turns on and displays the power-on screen. Figure 2-6 shows the power-on screen of TH8300 series programmable DC electronic load.
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Chapter 2
The power-on screen includes some product information such as trademark, instrument model and version number of TongHui company. The instrument will self-test when it is turned on and will stay in the power-on screen if there is any abnormality.
Figure 2-6 Power-on screen
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Chapter 3 Overview of

Overview of Instrument Functions

3.1 Introduction
The TH8300 series programmable DC electronic loads contain slots for five modules and can reach a maximum power of 2500W and supports up to ten channels.
Each module has an independent intelligent fan, and the fan speed varies with power. When the module temperature exceeds the over-temperature protection value, the module stops pulling the load current.
The general mode contains CC, CR, CV, and CP.
The advanced modes include DYN, SWP, CR-LED, BATT, TIME, MPPT,
OCPT, OVPT, OPPT, SIN, LIST, AUTO.
CC — Constant current mode CR — Constant resistance mode CV — Constant voltage mode CP — Constant power mode DYN — Dynamic load mode SWP — Dynamic Frequency Scan Mode CR-LED — Analog LED Test Mode BATT — Battery Test Mode TIME — Timing test mode MPPT — Maximum Power Point Tracking Test Mode OCPT — Over Current Protection Test Mode OVPT — Over Voltage Protection Test Mode OPPT — Over Power Protection Test Mode SINE — Sine Wave Test Mode LIST — List test mode AUTO — Auto test mode
3.2 Model Introduction

3.2.1

CC Constant Current Mode
In constant current mode, the electronic load always consumes a constant current regardless of whether the input voltage changes or not. As shown in Figure 3-1. The starting pull current is 0.1% of full scale.

Figure 3-1 CC Mode
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3.2.2

Chapter 3 Overview of
CR Constant resistance mode
In constant resistance mode, the electronic load is equivalent to a constant resistance, and the electronic load will change the current linearly with the change of voltage. As shown in Figure 3-2.

Figure 3-2 CR mode
3.2.3 CV Constant Voltage Mode
In constant voltage mode, the electronic load controls the power supply output voltage by adjusting the pull load current according to the set voltage value. As shown in Figure 3-3.
Figure 3-3 CV Mode
3.2.4 CP Fixed Power Mode
In the constant power mode, the electronic load always consumes a constant power. According to the formula: P = V × I, if the input voltage V increases, the current I will be forced to decrease to keep the power constant. This is shown in Figure 3-4.

Figure 3-4 CP Mode
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3.2.5

Chapter 3 Overview of
DYN Dynamic Load Mode
Dynamic load mode allows the load to switch between two current levels repeatedly. Dynamic load mode requires setting two current levels, the duration of each current level, the ramp up, the ramp down, and the number of repetitions. The number of repetitions determines the number of cycles of the entire high and low current pull load, ranging from 0 to 65535, with 0 indicating infinite cycles. As shown in Figure 3-5.

Figure 3-5 DYN Mode
3.2.6 SWP Dynamic Frequency Scan Mode
The electronic load provides a unique dynamic frequency sweep to find the worst-case voltage to be measured with frequency conversion. The dynamic frequency sweep requires setting two current levels, start frequency, end frequency, step frequency, duration, rise slope, and fall slope. When operated, the electronic load will pull the current at the set frequency for the set duration.

Figure 3-6 SWP mode

3.2.7

CR-LED test mode
Under the traditional CR mode, the electronic load increases the setting of diode conduction voltage, so that the electronic load will work only when the voltage added to both ends of the electronic load is greater than the conduction voltage of the diode, which completely and truly simulates the working principle of the diode, so the electronic load can simulate the ripple current during the real LED test.

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Chapter 3 Overview of
3.2.8 BATT Battery Test Mode
The electronic load can perform battery discharge test based on CC, CR or CP mode, and the termination conditions include voltage, timing, capacity, and energy. When the trigger condition of trigger termination is reached, the battery stops discharging and the load stops pulling the load current.
3.2.9 TIMING Time measurement mode
The electronic load has a unique time measurement function, which can perform accurate time measurement in the range of 0s to 100000s. The user can set CC, CR or CP mode to start timing when the voltage reaches the starting voltage and stop timing when the voltage reaches the end voltage, which can measure the time that the object under test is pulling load in the target voltage interval. This feature allows for application in battery discharge testing and other similar applications.
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Chapter 3 Overview of
3.2.10 MPPT Maximum Power Point Tracking test mode
The electronic load provides a maximum power point tracking function with DSP- based algorithms that can find out the maximum power provided by the power supply and at the same time can provide the voltage and current corresponding to the maximum power.
Figure 3-7 MPPT mode
3.2.11 OCPT Overcurrent Protection Test Mode
The electronic load has an over-current protection test (OCPT) function. In the OCPT test mode, the electronic load pulls a step-up current to test whether the output voltage of the power supply is lower than the trigger voltage in the overload condition, and then judge whether the output protection function of the power supply is normal.
Figure 3-8 OCPT mode
3.2.12 OVPT Overvoltage Protection Test Mode
The load provides over-voltage protection test (OVPT) function, the load
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Chapter 3 Overview of
captures the input voltage peak point and falling edge, and triggers at the preset level (Vtrig) at the falling edge moment, then the voltage peak is the over-voltage protection point of the power supply under test, and the time interval from the peak moment to the trigger moment is the OVP response time (Tovp) of the power supply under test, Tovp measurement accuracy is 10us.
3.2.13 OPPT over-power protection test mode
The electronic load has the function of overpower protection test (OPPT). In the OPPT test mode, the electronic load pulls the power of the load step up to test whether the output voltage of the power supply is lower than the trigger voltage under the overload condition, and then judge whether the output protection function of the power supply is normal.
Figure 3-9 OPPT Mode
3.2.14 SINE Sine wave test mode
The electronic load has a unique sine wave pull load current mode, which can set the pull load current deviation value (I_DC), pull load sine wave value (I_AC) and sine wave frequency value, and the lowest point of this sine wave pull load cannot be less than zero. The sine wave test can be used to simulate the ripple function.
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Chapter 3 Overview of
3.2.15 LIST list test mode
LIST mode can accurately and quickly complete complex arbitrary current change patterns, and complete multi-alignment with load of precision testing. It can help customers to save cost greatly. By editing the pull load value, duration, slope and repetition number of each step, LIST function generates a variety of complex sequences to meet complex test requirements.
3.2.16 AUTO automatic test mode
AUTO mode can accurately simulate the automatic testing process of production line and complete multi-step precision testing, which can help customers save cost greatly. Different modes can be set for each step, and by editing the pull load value, duration, rising slope, falling slope, number of repetitions and upper and lower limits of current, voltage and power for each step, you can judge whether each step is qualified or not.
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Chapter 3 Overview of

3.3 Protection function

3.3.1 Overvoltage protection (OVP)
The trigger value of overvoltage protection is 110% of the current range. If the overvoltage circuit is triggered, the load will be immediately OFF, the buzzer will sound, and the load screen will display a pop-up window (OVP).
Operation to clear the overvoltage protection status: Check whether the voltage of the DUT is within the protection trigger value, if it is beyond, please disconnect the DUT. When the Enter key on the front panel of the load is pressed, the word of load screen (OVP) is eliminated, and the load exits the OVP protection status.

3.3.2 Overcurrent Protection (OCP)

The maximum load current will be limited by hardware to about 110% of the present current range. Once the over-current protection is triggered, the load will immediately turn off, the buzzer will sound, and the load screen will display a popup window (OCP).

Operation to clear the over-current protection status: Check whether the current

of the DUT is within the rated current of the load or the set protection current, if it is

exceeded, please disconnect the DUT. When the Enter key on the front panel of the

load is pressed, the word of load screen (OCP) is eliminated, and the load exits the

OCP

protection

status.

3.3.3 Overpower Protection (OPP)
The maximum load power will be limited by hardware to about 110% of the present current power range. Once the over-power protection is triggered, the load will immediately turn off, the buzzer will sound, and the load screen will display a pop-up window (OPP).
Operation to clear the overpower protection status: After pressing the Enter key on the front panel of the load, the word “OPP” will be removed from the load screen and the load will exit the OPP protection status.

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Chapter 4

Basic

3.3.4 Over Temperature Protection (OTP)
When the internal power device of the load exceeds about 85°C, the load temperature is protected, at which time the load will be automatically OFF, the buzzer will sound, and the load screen will display a pop-up window (OTP).
Operation to clear the over temperature protection: When the load temperature drops to the protection point, press the Enter key on the front panel of the load, the word “OTP” will be eliminated, and the load will exit the OTP state.

3.3.5 Input polarity reversal protection (REV)
When the input voltage polarity is reversed, the load will be immediately OFF, the buzzer will sound, and the load screen will display a pop-up window (REV). As long as the input voltage with opposite polarity is always present, it will always be in the alarm state.
Operation to clear the reverse polarity protection status: Check whether the polarity is reversed, and if so, disconnect the connector.
3.4 ALLRUN Function
You can turn on the ALLRUN function of the module that needs to pull the current together and press the LOAD key of any ALLRUN function to turn on the module to pull the current synchronously or stop pulling the current. The following is an example analysis:
Module 1 and 2 ALLRUN function is turned on, module 3, 4 and 5 ALLRUN function is turned off.
Module 1 LOAD ON, module 2 synchronous LOAD ON, modules 3, 4 and 5 do not respond.
Module 2 LOAD ON, module 1 synchronous LOAD ON, modules 3, 4 and 5 do not respond.
Module 3 LOAD ON, Modules 1, 2, 4 and 5 do not respond.
Module 4 LOAD ON, Modules 1, 2, 3 and 5 do not respond.
Module 5 LOAD ON, Modules 1, 2, 3 and 4 do not respond.
3.5 Module Online

3.5.1

Module Online Setup
You can set any module as host mode, other modules involved in online as slave mode, and modules not involved as standalone mode. If there is already a host module, and then set the current module as host module, the module will prompt that the number of hosts is greater than 1, and you need to change it manually. After the successful connection, you can choose the connection type, which is divided into power and copy mode. The power mode is for the modules participating in the online to allocate the current of pulling load proportionally according to the maximum current. The power mode should be set to CC mode. Copy mode is for all participating modules to pull the current value set by the host module. Copy mode supports CC mode and DYN mode. Only the host module can LOAD ON or LOAD OFF, the slave module keys do not respond (only the L/R keys respond for the dual channel module).
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Chapter 4 Basic
3.5.2 Cautions
Description of module online and ALLRUN function: If no module is online, all modules with ALLRUN function on are LOAD ON or LOAD OFF synchronously.
If some of the modules are online and some of them are not involved in online, they do not affect each other. The following is an example analysis:
Modules 1 and 2 are online, module 1 is the host module. Modules 3, 4 and 5 are not involved in online, modules 3 and 4 ALLRUN function is ON and module 5 ALLRUN function is OFF.
Module 1 LOAD ON, module 2 synchronous LOAD ON, modules 3, 4 and 5 do not respond. Module 3 LOAD ON, module 4 synchronous LOAD ON, modules 1, 2 and 5 do not respond. Module 4 LOAD ON, module 3 synchronous LOAD ON, modules 1, 2 and 5 do not respond. Module 5 LOAD ON, Modules 1, 2, 3 and 4 do not respond. Whether the ALLRUN function of module 1 and 2 is turned on or, it does not affect the operating status.
3.6 CAN Online
Support up to 4 whole machines to be connected online through CAN interface. First set a master frame, enter the backplane setting, set CAN mode as master, CAN address as 1, and CAN status as on. Set the slave frame, set CAN mode as slave, CAN address as 2~4, and CAN status as on. Then set a host module in the host, the other modules are set to slave mode, enter the module online, and the online mode is set to copy mode. After it succeeds, the host module can set the pull load value, and the other machines in the online can pull load the same current value at the same time, supporting CC and DYN mode.
Chapter 4 Basic Operations and Instructions
This chapter introduces the operation and parameter descriptions of modules such as General Mode, Advanced Mode, System Setting, Function Setting, Limit Setting, Online Setting, Machine Information, Digitizing, Base Board Setting, and Base Board Communication.
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Chapter 4

Basic

4.1 Measurement display 4.1.1 General mode description
Press the Mode module key to enter General mode, the page is shown in Figure 4-1:
Figure 4-1 General Mode Page Press Menu Key 1 in the measurement screen to enter CC mode. Press Menu Key 2 to enter CR mode. Press Menu Key 3 to enter CV mode. Press Menu Key 4 to enter CP mode.
4.1.2 Advanced mode description
Press the ADVA module key to enter advanced mode, and the page is shown in Figure 4-2:
Press menu key 1 in the measurement interface to enter DYN mode. Press menu key 2 to enter SWP mode.
Press Menu Key 3 to enter CR-LED mode. Press Menu Key 4, the menu area displays more advanced modes.
Figure 4-2 Advanced Mode Page
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Chapter 4 Basic
4.2 General mode setup

4.2.1 CC Mode Setup

4.2.1.1

Instructions and operation

1. Description

The CC setting contains current range setting, voltage range setting, current value A setting, current value B setting, rising slope setting, and falling slope setting. As shown in Figure 4-3.

4.2.1.2

Figure 4-3 CC Setup Page
2) Operation
Press the SETUP key, if the current mode is CC mode, it will automatically jump to the CC setting interface. If the current mode is not CC mode, you can switch to the CC setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Current range

1. Description The current range is divided into high range, medium range, and low range.
   Take TH8302 as an example, it is 40A, 4A, 400mA respectively.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
   Voltage range
3. Description
   The voltage range is divided into high range, medium range and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Current setting value A
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Chapter 4 Basic

1. Description
   This parameter represents the pull-load current level A.
2. Operation Turn the cursor to the current setting value A setting by the knob, press
   the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Current setting value B
3. Description
   This parameter represents the pull-load current level B.
4. Operation
   Turn the cursor to the current setting value B setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Rising slope
5. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us.
6. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope
7. Description
   This parameter represents the slope of the pull-load current drop in A/us or mA/us.
8. Operation
   Turn the cursor to the falling slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   4.2.2 CR mode setting
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4.2.2.1

Chapter 4 Basic
Instructions and operation

1. Description
   The CR setting contains current range setting, resistance range setting, resistance value A setting, and resistance value B setting. As shown in Figure 4-4.

4.2.2.2

Figure 4-4 CR Setup Page 2) Operation
Press SETUP key, if the current mode is CR mode, it will automatically jump to the CR setting interface. If the current mode is not CR mode, you can switch to the CR setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Resistance range

1. Description The current range is divided into high range, medium range, and low range.
   Take TH8302 as an example, it is 9000, 2160 and 60 respectively. 2) Operation
   Use the knob to turn the cursor to the resistance range setting and press different menu keys to change the resistance range accordingly. Current range
2. Description The current range is divided into high range, medium range, and low range.
3. Operation Use the knob to turn the cursor to the current range setting and press
   different menu keys to change the current range accordingly. Resistance setting value A
4. Description This parameter represents the pull-load resistance level A. 2) Operation
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Chapter 4 Basic
Turn the cursor to the resistance setting value A setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Resistance setting value B

1. Description
   This parameter represents the pull-load resistance level B.
2. Operation
   Turn the cursor to the resistance setting value B setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.2.3 CV mode setting

4.2.3.1

Instructions and operation

1. Description

The CV setting contains voltage range setting, voltage value A setting, and voltage value B setting. As shown in Figure 4-5.

4.2.3.2

Figure 4-5 CV Setup Page
2) Operation
Press the SETUP key, if the current mode is CV mode, it will automatically jump to the CV setting interface. If the current mode is not CV mode, you can switch to the CV setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Voltage range

1. Description
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Chapter 4 Basic
The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
2) Operation Use the knob to turn the cursor to the voltage range setting and press the
different menu keys to change the voltage range accordingly.
Current range The CV mode current range is always high range.
Voltage setting value A

1. Description
   This parameter represents the pull-load voltage level A.
2. Operation
   Turn the cursor to the voltage setting value A setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Voltage setting value B
3. Description
   This parameter represents the pull-load voltage level B.
4. Operation
   Turn the cursor to the voltage setting value B setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.2.4 CP mode setting

4.2.4.1

Description and operation

1. Description

The CP settings include power range setting, voltage range setting, power value A setting, power value B setting, rising slope setting, and falling slope setting. As shown in Figure 4-6.

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4.2.4.2

Figure 4-6 CP Setup Page 2) Operation
Press SETUP key, if the current mode is CP mode, it will automatically jump to the CP setting interface. If the current mode is not CP mode, you can switch to the CP setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Power range

1. Description
   The power range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 200W, 20W and 4W respectively.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the power range accordingly. Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly. Power setting value A
5. Description
   This parameter represents the pull-load power level A.
6. Operation
   Turn the cursor to the power setting value A setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the
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knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Power setting value B

1. Description
   This parameter represents the pull-load power level B.
2. Operation
   Turn the cursor to the power setting value B setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Rising slope
3. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us. 2) Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope
4. Description
   This parameter represents the falling slope of the pull-load current in A/us or mA/us.
5. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   4.3 Advanced Mode Settings

4.3.1 DYN Mode Settings

4.3.1.1

Instructions and operation

1. Description

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DYN mode is a dynamic load mode, based on CC mode. It contains current range setting, voltage range setting, current value 1 setting, current value 2 setting, time value 1 setting, time value 2 setting, rising slope setting, falling slope setting, and repetition number setting. As shown in Figure 4-7.

4.3.1.2

Figure 4-7 DYN Setup Page 2) Operation
Press SETUP key, if the current mode is DYN mode, it will automatically jump to the DYN setting interface. If the current mode is not DYN mode, you can switch to the DYN settings screen by toggling menu key 4 (More).
Setting parameter description and operation
Current range 1) Description
The current range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 40A, 4A, 400mA respectively.
2) Operation
Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
Voltage range

1. Description
   The voltage range is divided into high range, medium range and low range. They are 80V, 16V and 6V respectively.
2. Operation
   Turn the cursor to the voltage range setting with the knob and press the different menu keys to change the voltage range accordingly.
   Current setting value 1
3. Description
   This parameter represents the dynamic pull-load current level 1.
4. Operation
   Turn the cursor to the current setting value 1 setting by the knob, press the knob change key to enter the editing state, you can change the value
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position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Current setting value 2

1. Description
   This parameter represents the dynamic pull-load current level 2.
2. Operation
   Turn the cursor to the current setting value 2 setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Time setting value 1
3. Description
   This parameter represents the duration of the dynamic pull-load current level

2. Operation
   Turn the cursor to the time setting value 1 setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Time setting value 2 1) Description
   This parameter represents the duration of the dynamic pull-load current level

2. Operation
   Turn the cursor to the time setting value 1 setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Rising slope
3. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us.
4. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be
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changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Falling slope

1. Description
   This parameter represents the falling slope of the pull-load current in A/us or mA/us.
2. Operation
   Turn the cursor to the falling slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Number of repetitions
3. Description
   This parameter represents the number of repetitions of the dynamic pull-load process.
4. Operation
   Turn the cursor to the repeat count setting by the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys or press the knob change key continuously to change the value position. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.2 SWP mode setting

4.3.2.1

Instructions and operation

1. Description
   SWP mode is dynamic load frequency sweep mode, based on CC mode. It contains current range setting, voltage range setting, current value 1 setting, current value 2 setting, start frequency setting, termination frequency setting, step frequency setting, duration setting, rise slope setting, and fall slope setting. As shown in Figure 4-8.

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4.3.2.2

Figure 4-8 SWP Setting Page
2) Operation Press SETUP key, if the current mode is SWP mode, it will automatically
jump to the SWP setting interface. If the current mode is not SWP mode, you can switch to the SWP setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Current range

1. Description
   The current range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 40A, 4A, 400mA respectively.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
   Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Current setting value 1
5. Description
   This parameter represents the dynamic pull-load current level 1.
6. Operation
   Turn the cursor to the current setting value 1 setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the
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Enter key to exit the editing state.
Current setting value 2

1. Description
   This parameter represents the dynamic pull-load current level 2.
2. Operation
   Turn the cursor to the current setting value 2 setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Starting frequency
3. Description
   This parameter represents the frequency at which the dynamic pull current starts.
4. Operation
   Turn the cursor to the starting frequency setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press Enter to exit the editing state. Termination frequency
5. Description
   This parameter represents the frequency at which the dynamic pull current is terminated.
6. Operation
   Turn the cursor to the termination frequency setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Step frequency
7. Description
   This parameter represents the value of the change in frequency at each step of the dynamic pulling current.
8. Operation
   Turn the cursor to the step frequency setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by
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pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Duration

1. Description
   This parameter represents the duration of each step of the dynamic pull current from the start frequency to the termination frequency.

2. Operation
   Turn the cursor to the duration setting with the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Rising slope

3. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us.

4. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope

5. Description This parameter represents the falling slope of the pull-load current in A/us or mA/us.

6. Operation

Turn the cursor to the falling slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.3 CR-LED mode setting

4.3.3.1

Instructions and operation

1. Description

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The CR-LED setting contains resistance range setting, resistance value setting, and voltage value setting. As shown in Figure 4-9.

4.3.3.2

Figure 4-9 CR-LED Setup Page
2) Operation
Press SETUP key, if the current mode is CR-LED mode, it will automatically jump to the CR-LED setting interface. If the current mode is not CR-LED mode, you can switch to the CR-LED setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Resistance range

1. Description
   The resistance range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 9000, 2160 and 60 respectively. 2) Operation
   Use the knob to turn the cursor to the resistance range setting and press different menu keys to change the resistance range accordingly. Resistance setting value
2. Description
   This parameter represents the simulated LED resistance value.
3. Operation
   Turn the cursor to the resistance setting value by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Voltage setting value
4. Description
   This parameter represents the simulated LED starting voltage.
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2) Operation
Turn the cursor to the voltage setting value with the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys or keep pressing the knob change key to change the value position. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.4 BATT mode setting

4.3.4.1

Instructions and operation

1. Description

BAT is the battery measurement mode, and the settings include discharge mode setting, current range setting, voltage range setting, setting value, termination mode setting, termination threshold setting, rising slope setting, and falling slope setting. As shown in Figure 4-10.

4.3.4.2

Figure 4-10 BATT Setup Page
2) Operation
Press the SETUP key, if the current mode is BATT mode, it will automatically jump to the BATT setting interface. If the current mode is not BATT mode, you can switch to the BATT setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Discharge mode

1. Description The discharge modes include CC, CR, and CP. 2) Operation
   Use the knob to turn the cursor to the discharge mode setting and press the different menu keys to change the current range accordingly. Current range
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1. Description
   The current range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 40A, 4A, 400mA respectively.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
   Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Set value 1) Description
   This parameter represents the pull-load value corresponding to different discharge modes. For example, if the discharge mode is CC, it is the current value of the pull load.
5. Operation
   Turn the cursor to the setting value by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Termination Mode
6. Description
   This parameter represents the mode in which the battery test is terminated, including voltage, timing, capacity, and energy.
7. Operation
   Use the knob to turn the cursor to the termination mode setting and press different menu keys to change the termination mode accordingly. Termination Threshold
8. Description
   This parameter represents the trigger value corresponding to the battery test termination mode.
9. Operation
   Turn the cursor to the termination threshold setting value by the knob, press the knob change key to enter the editing state, you can change the
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value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Rising slope

1. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us.
2. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope
3. Description
   This parameter represents the falling slope of the pull-load current in A/us or mA/us.
4. Operation
   Turn the cursor to the falling slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.5 TIMING mode setting

4.3.5.1

Description and operation

1. Description

TIME is the timing measurement mode, and the settings include measurement mode setting, current range setting, voltage range setting, setting value, trigger mode setting, starting voltage setting, terminating voltage setting, stop time setting, rising slope setting, and falling slope setting. As shown in Figure 4-11.

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4.3.5.2

Figure 4-11 TIME Setup Page
2) Operation
Press SETUP key, if the current mode is TIME mode, it will automatically jump to the TIME setting interface. If the current mode is not TIME mode, you can switch to the TIME setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Test Mode

1. Description The test modes include CC, CR, and CP. 2) Operation
   Use the knob to turn the cursor to the test mode setting and press the different menu keys to change the current range accordingly. Current range
2. Description The current range is divided into high range, medium range, and low range.
   Take TH8302 as an example, it is 40A, 4A, 400mA respectively. 2) Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly. Voltage range
3. Description The voltage range is divided into high range, medium range, and low range.
   They are 80V, 16V and 6V respectively. 2) Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly. Set value
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1. Description
   This parameter represents the pull-load value corresponding to different test modes. For example, if the test mode is CC, it is the current value of the pull load.
2. Operation
   Turn the cursor to the setting value by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Trigger mode
3. Description
   This parameter represents the mode of the timing test, including rise, fall, and hold.
4. Operation
   Turn the cursor to the test mode setting through the knob and press different menu keys to change the trigger mode accordingly. Starting voltage
5. Description
   This parameter represents the starting voltage of the timing test.
6. Operation
   Turn the cursor to the starting voltage setting value with the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Termination voltage
7. Description
   This parameter represents the timing test termination voltage.
8. Operation Turn the cursor to the end voltage setting value with the knob, press the
   knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Stop time
9. Description
   This parameter represents the maximum duration of the timing test, even
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if the whole test process is not completed at this time, the electronic load is forced to stop pulling the load current.
2) Operation
Turn the cursor to the stop time setting value by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

Rising slope

1. Description
   This parameter represents the rising slope of the pull-load current in A/us or mA/us.

2. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope

3. Description This parameter represents the falling slope of the pull-load current in A/us or mA/us.

4. Operation

Turn the cursor to the falling slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.6 MPPT mode setting

4.3.6.1

Instructions and operation

1. Description
   The MPPT test function is maximum power point tracking. The settings include voltage range setting, test speed setting. As shown in Figure 4-12.

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Figure 4-12 MPPT Setup Page

2. Operation

Press SETUP key, if the current mode is MPPT mode, it will automatically jump to the MPPT setting interface. If the current mode is not MPPT mode, you can switch to the MPPT setting interface by toggling menu key 4 (More).

4.3.6.2

Setting parameter description and operation
Voltage range

1. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.

2. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Test Speed

3. Description The test speed is divided into fast, medium, and slow speed.

4. Operation

4.3.7

Use the knob to turn the cursor to the test speed setting and press different menu keys to change the test speed accordingly.
OCPT mode setting

4.3.7.1

Instructions and operation

1. Description
   OCPT mode is over current protection test, based on CC mode. It contains current range setting, voltage range setting, start current setting, termination current setting, step number setting, duration setting, trigger voltage setting, lower current limit setting, upper current limit setting, and pull-load lock setting. As shown in Figure 4-13.

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4.3.7.2

2. Operation

Figure 4-13 OCPT Setup Page

Press SETUP key, if the current mode is OCPT mode, it will automatically jump to the OCPT setting interface. If the current mode is not OCPT mode, you can switch to the OCPT setting interface by toggling menu key 4 (More).

Setting parameter description and operation
Current range

1. Description
   The current range is divided into high range, medium range, and low range. Take TH8302 as an example, it is 40A, 4A, 400mA respectively.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly. Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly. Starting current
5. Description
   This parameter represents the current at which the overcurrent protection test starts.
6. Operation Turn the cursor to the starting current setting by the knob, press the knob
   change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by
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pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press Enter to exit the editing state. Termination current
3) Description
This parameter represents the current at which the overcurrent protection test is terminated.
4) Operation
Turn the cursor to the end current setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Steps Number

1. Description
   This parameter represents the step of change between the starting current and the ending current.
2. Operation
   Turn the cursor to the step number setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Duration
3. Description
   This parameter represents the duration of each step of the current pull load.
4. Operation
   Turn the cursor to the duration setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Trigger voltage
5. Description
   This parameter represents the voltage at which the overcurrent protection test is triggered.
6. Operation
   Turn the cursor to the trigger voltage setting by the knob, press the knob change key to enter the editing state, you can change the value position to be
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changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower current limit

1. Description
   This parameter represents the lower limit value of the trigger voltage corresponding to the test current.
2. Operation
   Turn the cursor to the lower current limit setting with the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Current limit
3. Description
   This parameter represents the upper limit of the trigger voltage corresponding to the test current.
4. Operation
   Turn the cursor to the current limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Pull-Load Lock
5. Description
   This parameter represents whether the load continues to pull current after the trigger voltage is reached. If the load lock is on, the load will continue to pull current, and if the load lock is off, the load will stop pulling current.
6. Operation
   Use the knob to turn the cursor to the pull load lock setting and press the different menu keys to change the voltage range accordingly.

4.3.8 OVPT mode setting

4.3.8.1

Instructions and operation

1. Description

OVPT test function is over voltage protection test. The settings include voltage range setting, trigger voltage setting. As shown in Figure 4-14.

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Figure 4-14 OVPT Setup Page
2) Operation
Press SETUP key, if the current mode is OVPT mode, it will automatically jump to the OVPT setting interface. If the current mode is not OVPT mode, you can switch to the OVPT setting interface by toggling menu key 4 (More).

4.3.8.2

Setting parameter description and operation
Voltage range

1. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.

2. Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Trigger voltage

3. Description

This parameter represents the trigger voltage for reaching the voltage protection test.

2. Operation

Turn the cursor to the trigger voltage setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.9 OPPT mode setting

4.3.9.1

Instructions and operation

1. Description
   OPPT mode is over power protection test, based on CC mode. It contains current range setting, voltage range setting, starting power setting, termination power setting, step number setting, duration setting, trigger voltage setting,
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lower power limit setting, upper power limit setting, and pull-load lock setting. As shown in Figure 4-15.

4.3.9.2

Figure 4-15 OPPT Setting Page
2) Operation
Press the SETUP key, if the current mode is OPPT mode, it will automatically jump to the OPPT setting interface. If the current mode is not OPPT mode, you can switch to the OPPT setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Current range

1. Description The current range is divided into high range, medium range, and low range.
2. Operation Use the knob to turn the cursor to the current range setting and press the
   different menu keys to change the current range accordingly. Voltage range
3. Description The voltage range is divided into high range, medium range, and low range.
   They are 80V, 16V and 6V respectively. 2) Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly. Starting power
4. Description This parameter represents the power at the start of the overpower protection test.
5. Operation

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Turn the cursor to the starting power setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press Enter to exit the editing state. Termination power

1. Description
   This parameter represents the power at which the overpower protection test is terminated.
2. Operation
   Turn the cursor to the end power setting by the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Step Number
3. Description
   This parameter represents the step of change between the starting power and the ending power.
4. Operation
   Turn the cursor to the step number setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Duration
5. Description
   This parameter represents the duration of each step of the power pull.
6. Operation
   Turn the cursor to the duration setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Trigger voltage
7. Description
   This parameter represents the voltage at which the over-power protection test is triggered.
8. Operation
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Turn the cursor to the trigger voltage setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Lower power limit

1. Description
   This parameter represents the lower limit value of the trigger voltage corresponding to the test power.
2. Operation
   Turn the cursor to the lower power limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Power limit
3. Description
   This parameter represents the upper limit of the trigger voltage corresponding to the test power.
4. Operation
   Turn the cursor to the power limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Pull Load Lock
5. Description
   This parameter represents whether the load continues to pull current after the trigger voltage is reached. If the load lock is on, the load will continue to pull current, and if the load lock is off, the load will stop pulling current.
6. Operation
   Use the knob to turn the cursor to the pull load lock setting and press the different menu keys to change the voltage range accordingly.
   4.3.10 SINE mode setting
   4.3.10.1 Instructions and operation
7. Description
   The SINE test function is a sine wave test. The settings include current range setting, voltage range setting, DC current setting, AC current setting, and frequency setting. As shown in Figure 4-16.
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4.3.10.2

Figure 4-16 SINE Setup Page 2) Operation
Press SETUP key, if the current mode is SINE mode, it will automatically jump to the SINE setting interface. If the current mode is not SINE mode, you can switch to the SINE setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Current range

1. Description
   The current range is divided into high range, medium range, and low range.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
   Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively.
4. Operation
   Use the knob to turn the cursor to the voltage range setting, and press the different menu keys to change the voltage range accordingly.
   DC Current
5. Description
   This parameter represents the DC current in a sine wave test.
6. Operation
   Turn the cursor to the DC current setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
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1. Description This parameter represents the AC current in a sine wave test.

2. Operation

Turn the cursor to the AC current setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Frequency settings

1. Description This parameter represents the frequency in the sine wave test.
2. Operation

Turn the cursor to the frequency setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.11 LIST mode setting

4.3.11.1

Instructions and operation

1. Description
   LIST test function is list test. The settings include current range setting, voltage range setting, repetition number setting, total sequence setting, current sequence setting, current setting, duration setting, and slope setting. As shown in Figure 4-17.

Figure 4-17 LIST Setup Page 2) Operation
Press SETUP key, if the current mode is LIST mode, it will automatically
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jump to the LIST setting interface. If the current mode is not LIST mode, you can switch to the LIST setting interface by toggling menu key 4 (More).
Setting parameter description and operation
Current range

1. Description
   The current range is divided into high range, medium range, and low range.
2. Operation
   Use the knob to turn the cursor to the current range setting and press the different menu keys to change the current range accordingly.
   Voltage range
3. Description
   The voltage range is divided into high range, medium range, and low range. They are 80V, 16V and 6V respectively. 2) Operation
   Use the knob to turn the cursor to the voltage range setting and press the different menu keys to change the voltage range accordingly.
   Number of repetitions
4. Description
   This parameter represents the number of iterations of the list test.
5. Operation
   Turn the cursor to the repeat count setting with the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Total number of sequences
6. Description
   This parameter represents the total number of sequences tested by the list.
7. Operation
   Turn the cursor to the sequence total setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Current Sequence
8. Description
   This parameter represents the current sequence of the list test.
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2) Operation

Turn the cursor to the current sequence setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Current setting

1. Description This parameter represents the current pull-load value of the current sequence.

2. Operation

Turn the cursor to the current setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Duration

1. Description This parameter represents the duration of the current sequence current pull.

2. Operation

Turn the cursor to the duration by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Slope setting

1. Description This parameter represents the slope of the current change in the current sequence.

2. Operation

Turn the cursor to the slope setting with the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.

4.3.12 AUTO mode setting

4.3.12.1

Instructions and operation

1. Description
   AUTO mode is the automatic test function. The settings include current program, program type, linked program, repeat count, clear sequence, total number of sequences, and edit sequence. When the program type is LIST,
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each sequence will be set after entering the edit sequence. When the program type is STEP, the step will be set after entering the edit sequence. AUTO mode contains 10 programs, each program can edit up to 100 sequences. Users can freely chain programs together to form combinations and complete the automatic test process. As shown in Figure 4-18, 4-19, 4-20.
Figure 4-18 AUTO setting page
Figure 4-19 Timing Setting Page
Figure 4-20 Step Setting Page 2) Operation
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Press SETUP key, if the current mode is AUTO mode, it will automatically jump to AUTO setting interface. If the current mode is not AUTO mode, you can switch to the AUTO setting screen by toggling menu key 4 (More). When the program type is set to LIST, it will enter the timing setting screen after editing sequence is selected. When the program type is set to STEP, it will enter the step setting screen after editing sequence is selected.
Setting parameter description and operation
A. Program type set to LIST
Current Program

1. Description
   The first program executed in automatic mode.
2. Operation
   Turn the cursor to the current program setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Program Type
3. Description
   There are two types of programs: List (list) and Step (step).
4. Operation
   Use the knob to rotate the cursor to the program type setting and press different menu keys to change the program type accordingly.
   Chain Knot
5. Description
   This parameter represents the next program to be executed.
6. Operation
   Turn the cursor to the link setting by the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Number of repetitions
7. Description
   This parameter represents the number of repetitions of the current program.
8. Operation
   Turn the cursor to the sequence repetition number setting by the knob,
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press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Clear Sequence

1. Description
   This parameter clears the sequence of the current program.
2. Operation
   Turn the cursor to the Program Clear Sequence setting by the knob, and press Menu Key 1 to clear the sequence.
   Edit Sequence
3. Description
   This parameter represents entering sequence editing. When the program type is set to LIST, the selected editing sequence will enter the Timing setting page. When the program type is set to STEP, the selected editing sequence will enter the step setting page.
4. Operation Use the knob to turn the cursor to the program edit sequence setting, and
   press menu key 1 to enter the sequence edit.
   Current Sequence
5. Description
   This parameter represents the currently edited sequence.
6. Operation
   Turn the cursor to the current sequence by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Trigger mode
7. Description
   This parameter represents the trigger mode of the current sequence. Skip means the current sequence is not executed, Auto means the current sequence is executed automatically, Manual means waiting for a manual trigger signal, and External means waiting for an external trigger signal.
8. Operation
   Use the knob to turn the cursor to the trigger mode setting and press different menu keys to change the trigger mode accordingly.
   Test Mode
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1. Description
   This parameter represents the test mode of the current sequence. It includes CC, CR, CV, and CP.
2. Operation
   Use the knob to turn the cursor to the test mode setting and press different menu keys to change the test mode accordingly. Measurement range
3. Description
   This parameter represents the range of the current sequence; CC, CP mode indicates current range, CR, CV mode indicates voltage range.
4. Operation
   Use the knob to turn the cursor to the range setting and press the different menu keys to change the range accordingly.
   Duration
5. Description
   This parameter represents the duration of the current sequence test.
6. Operation
   Turn the cursor to the duration by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Set value
7. Description
   This parameter represents the pull-load value of the current mode.
8. Operation
   Turn the cursor to the setting value by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Upper Voltage limit
9. Description
   This parameter represents the upper voltage limit of the current sequence.
10. Operation
    Turn the cursor to the upper voltage limit setting by the knob, press the knob
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change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower voltage limit

1. Description
   This parameter represents the lower voltage limit of the current sequence.
2. Operation
   Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Upper Current limit
3. Description
   This parameter represents the upper current limit of the current sequence.
4. Operation
   Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower current limit
5. Description
   This parameter represents the lower current limit of the current sequence.
6. Operation
   Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Upper Power limit
7. Description
   This parameter represents the upper power limit of the current sequence.
8. Operation
   Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob
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is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower power limit

1. Description This parameter represents the lower power limit of the current sequence.

2. Operation

Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Rising slope

1. Description

When the test mode of the current sequence is set to CC or CP, the rising slope needs to be set.
2) Operation

Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Falling slope

1. Description

When the test mode of the current sequence is set to CC or CP, the falling slope needs to be set.
2) Operation

Turn the cursor to the rising slope setting by the knob, press the knob

change key to enter the editing state, you can change the value position to be

changed by the left and right keys, or you can change the value position by

pressing the knob change key continuously. The value increases when the

knob is turned up and decreases when the knob is turned down. Press the

Enter

key

to

exit

the

editing

state.

B. Program type is set to Step Trigger mode

1. Description

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This parameter represents the trigger mode of the current sequence. Skip means the current sequence is not executed, Auto means the current sequence is executed automatically, Manual means waiting for a manual trigger signal, and External means waiting for an external trigger signal.
2) Operation Use the knob to turn the cursor to the trigger mode setting and press
different menu keys to change the trigger mode accordingly. Test Mode

1. Description
   This parameter represents the test mode of the current sequence. It includes CC, CR, CV, and CP.
2. Operation
   Use the knob to turn the cursor to the test mode setting and press different menu keys to change the test mode accordingly.
   Measurement range
3. Description
   This parameter represents the range of the current sequence; CC, CP mode indicates current range, CR, CV mode indicates voltage range.
4. Operation
   Use the knob to turn the cursor to the range setting and press the different menu keys to change the range accordingly.
   Duration
5. Description
   This parameter represents the duration of the current sequence test.
6. Operation
   Turn the cursor to the duration by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Starting value
7. Description
   This parameter represents the starting pull-load value for the current mode.
8. Operation
   Turn the cursor to the starting value setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the
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knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Termination value

1. Description
   This parameter represents the termination pull value for the current mode.
2. Operation
   Turn the cursor to the end value setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Upper Voltage limit
3. Description
   This parameter represents the upper voltage limit of the current sequence.
4. Operation
   Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower voltage limit
5. Description
   This parameter represents the lower voltage limit of the current sequence.
6. Operation
   Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Upper Current limit
7. Description
   This parameter represents the upper current limit of the current sequence.
8. Operation
   Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
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Lower current limit

1. Description
   This parameter represents the lower current limit of the current sequence.
2. Operation
   Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Upper Power limit
3. Description
   This parameter represents the upper power limit of the current sequence.
4. Operation
   Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Lower power limit
5. Description
   This parameter represents the lower power limit of the current sequence.
6. Operation
   Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Rising slope
7. Description
   When the test mode of the current sequence is set to CC or CP, the rising slope needs to be set.
8. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Falling slope
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1. Description
   When the test mode of the current sequence is set to CC or CP, the falling slope needs to be set.

2. Operation
   Turn the cursor to the rising slope setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   4.4 System Setup
   4.4.1 Instructions and operation

3. Description
   The system settings include power-on parameter settings, backlight settings, language settings, key sound settings, system reset settings, and factory settings. As shown in Figure 4-21.

4. Operation

Figure 4-21 System Setup Page

Pressing the System key will switch to the System settings screen.

4.4.2 Setting parameter description and operation
Boot parameters

1. Description The boot parameters are divided into default parameters and user parameters.

2. Operation
   Use the knob to turn the cursor to the power-on parameter setting and press different menu keys to change the power-on parameters accordingly. Backlight settings

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1. Description The backlight setting is divided into a total of ten grades, which are 1~10. 2) Operation
   Use the knob to turn the cursor to the backlight setting, and press the “+” or “” button to change the backlight brightness. Language Settings
2. Description The language settings are divided into Chinese and English.
3. Operation Use the knob to turn the cursor to the language setting and press different
   menu keys to change the language setting accordingly. Key Sound
4. Description The key sound can be turned on or off.
5. Operation Use the knob to turn the cursor to the key sound setting and press
   different menu keys to change the key sound accordingly. System Reset
6. Description The system reboots after a system reset.
7. Operation Use the knob to turn the cursor to the system setting and press the
   corresponding menu key to reset the system. Factory Settings
8. Description Restore Factory Settings sets all settings to factory defaults.
9. Operation Use the knob to turn the cursor to the factory setting and press the
   corresponding menu key to restore the factory setting.
   4.5 Function Setting
   4.5.1 Description and operation
10. Description Function settings include start voltage setting, voltage threshold setting,
    shutdown voltage setting, soft start setting, start time setting, positive timing setting, countdown timing setting, countdown time setting, low voltage
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protection setting, all pull-load setting, voltage response setting, CV type setting, external waveform setting, V-Sense setting, and lock mode setting. As shown in Figure 4-22, 4-23.
Figure 4-22 Function Setting Page
Figure 4-23 Function Setting Page 2) Operation
Press the System key, it will switch to the system setting page, and then press the menu key corresponding to the function setting to switch to the function setting interface.
4.5.2 Setting parameter description and operation
Starting voltage 1) Description The starting voltage is with two states of on/off. In the on state, if the voltage reaches Von, the load continues to pull current. In the off state, if the voltage is below Von, the load stops pulling load current. 2) Operation Use the knob to turn the cursor to the start voltage setting and press the different menu keys to change the start voltage setting accordingly.
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Voltage Threshold

1. Description
   This parameter represents the minimum starting voltage value for electronic load pulling current.
2. Operation
   Turn the cursor to the voltage threshold setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Shutdown voltage
3. Description
   The electronic load will stop pulling the load current when the voltage of the object to be measured is lower than Voff. To avoid logic errors, generally Voff should be less than or equal to Von.
4. Operation
   Turn the cursor to the off voltage setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Soft Start
5. Description
   This parameter represents the switch for soft start of the electronic load.
6. Operation
   Use the knob to turn the cursor to the soft start setting and press different menu keys to change the soft start setting accordingly.
   Start-up time
7. Description
   This parameter represents the soft start time of the electronic load.
8. Operation
   Turn the cursor to the start time setting by the knob and press the knob change key to enter the editing state. You can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Positive Timing
9. Description
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This parameter represents the timing of the start time of the electronic load.
2) Operation
Use the knob to turn the cursor to the soft start setting and press the different menu keys to change the timing settings accordingly. Countdown

1. Description
   This parameter represents the switch for the countdown operation of the electronic load.
2. Operation
   Use the knob to turn the cursor to the countdown setting and press different menu keys to change the countdown setting accordingly.
   Countdown Time
3. Description
   This parameter represents the time setting of electronic load countdown operation.
4. Operation
   Turn the cursor to the countdown time setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Low voltage protection
5. Description
   This parameter represents the electronic load low voltage protection switch.
6. Operation
   Use the knob to turn the cursor to the low voltage protection setting and press different menu keys to change the low voltage protection setting accordingly.
   All pull load
7. Description
   When all pull load is on, press the “LOAD” key for any module with all pull load on, and all modules with all pull load on will pull current at the same time.
8. Operation
   Use the knob to turn the cursor to the All Pull Settings and press different menu keys to change the All Pull Settings accordingly.
   Voltage response
9. Description
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This parameter represents the speed of the electronic load voltage response.
2) Operation
Use the knob to turn the cursor to the voltage response setting and press the different menu keys to change the voltage response setting accordingly.
CV Type

1. Description
   This parameter is used to distinguish the voltage types corresponding to different power supplies, including Current PSU and Voltage PSU.
2. Operation
   Use the knob to turn the cursor to the CV type setting and press different menu keys to change the CV type setting accordingly.
   External Waveforms
3. Description
   This parameter represents the CC mode when the electronic load can use external drive current for the waveform generator.
4. Operation Use the knob to turn the cursor to the external waveform setting and press
   different menu keys to change the external waveform setting accordingly. V-Sense
5. Description
   This parameter represents the control switch on the voltage Sense terminal, which when turned on avoids errors caused by voltage drops on the test line and is particularly useful when precise voltages are required for CR or CV testing.
6. Operation
   Use the knob to turn the cursor to the V-Sense setting and press different menu keys to change the V-Sense type setting accordingly.
   Lock Mode
7. Description
   This parameter represents whether a single module is locked, or all modules are locked when the “Lock” key is pressed.
8. Operation
   Use the knob to turn the cursor to the lock mode setting and press different menu keys to change the lock mode setting accordingly.

4.6 Limit settings

4.6.1

Instructions and operation

1. Description
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The limit setting contains limit state setting, limit mode setting, reference current setting, current upper limit setting, current lower limit setting, reference voltage setting, voltage upper limit setting, voltage lower limit setting, reference power setting, power upper limit setting, power lower limit setting. As shown in Figure 4-24, 4-25.

Figure 4-24 Limit settings page

2. Operation

Figure 4-25 Limit settings page

Press System key, it will switch to the system setting page, and then press the menu key corresponding to the limit setting, it will switch to the limit setting interface.

4.6.2 Setting parameter description and operation
Limit state 1) Description This parameter represents whether limit judgment is turned on or not. 2) Operation Use the knob to turn the cursor to the limit state setting and press different menu keys to change the limit state setting accordingly.
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1. Description
   This parameter represents the setting of the limit mode, both numeric and percentage mode.
   Reference current

2. Description This parameter represents the reference current of the limit setting.

3. Operation

Turn the cursor to the reference current setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Upper Current limit

1. Description This parameter represents the upper current limit of the limit setting.

2. Operation

Turn the cursor to the current limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Lower current limit

1. Description This parameter represents the lower current limit for the limit setting.

2. Operation

Turn the cursor to the lower current limit setting with the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Reference voltage

1. Description This parameter represents the reference voltage for the limit setting.

2. Operation

Turn the cursor to the reference voltage setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by
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pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Upper Voltage limit
3) Description
This parameter represents the upper voltage limit of the limit setting.
4) Operation
Turn the cursor to the upper voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
Lower voltage limit
3) Description
This parameter represents the lower voltage limit of the limit setting.
4) Operation
Turn the cursor to the lower voltage limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Reference power

1. Description
   This parameter represents the reference power of the limit setting.
2. Operation
   Turn the cursor to the reference power setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Upper Power limit
3. Description
   This parameter represents the upper power limit of the limit setting.
4. Operation
   Turn the cursor to the power limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
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Lower power limit 1) Description This parameter represents the lower limit of power for the limit setting. 2) Operation Turn the cursor to the lower power limit setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
4.7 Online Settings 4.7.1 Instructions and operation

1. Description Online settings include online mode setting, online status setting, and online
   type setting. As shown in Figure 4-26.
   Figure 4-26 Online Setup Page 2) Operation
   Press System key, it will switch to the system setting page. You can switch to the online setting interface by toggling menu key 4 (More) and then pressing the menu key corresponding to online setting.
   4.7.2 Setting parameter description and operation
   Online mode 1) Description The online mode is divided into standalone, slave and host. 2) Operation Use the knob to turn the cursor to the online mode setting and press different menu keys to change the online mode setting accordingly.
   Online Status
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1. Description
   This parameter represents the switch of online status. It can only be turned on when the module is set to host module. If the number of host modules is greater than 1, it will indicate online failure.

2. Operation
   Use the knob to turn the cursor to the online status setting and press different menu keys to change the online status setting accordingly.
   Online Type

3. Description
   After the system is successfully connected, the host module will display the connection type. There are two types: power and copy. When the connection type is power, each module is assigned current according to its own power level. When the connection type is copy, each module pulls the same current and is controlled by the host module.

4. Operation
   Use the knob to turn the cursor to the online type setting and press different menu keys to change the online type setting accordingly.
   4.8 Digital setup
   4.8.1 Instructions and operation

5. Description
   The digitization setting contains sample time setting, sample point setting, trigger source setting, and trigger point setting. As shown in Figure 4-27.

6. Operation

Figure 4-27 Digitization setup page

Press the System key, it will switch to the system settings page. You can switch to the digital settings screen by toggling menu key 4 (More) and then pressing the menu key corresponding to digital settings.

4.8.2 Setting parameter description and operation
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Sampling time

1. Description
   This parameter represents the sampling time interval in the range of 10us to 40ms.
2. Operation
   Turn the cursor to the sampling time setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state. Sampling Points
3. Description
   This parameter represents the number of sampling points, in the range 1 to

2. Operation
   Turn the cursor to the sampling point setting by the knob, press the knob change key to enter the editing state, you can change the value position to be changed by the left and right keys, or you can change the value position by pressing the knob change key continuously. The value increases when the knob is turned up and decreases when the knob is turned down. Press the Enter key to exit the editing state.
   Trigger source
3. Description
   This parameter represents the trigger source.
4. Operation Use the knob to turn the cursor to the trigger source setting and press
   different menu keys to change the trigger source setting accordingly. Trigger Points
5. Description
   This parameter represents the trigger point of the digitization function.
6. Operation
   Turn the cursor to the trigger point setting by the knob, press the knob change key to enter the editing state, you can change the

References

• Tonghui同惠电子 | 携手同心 惠及未来
• Tonghui同惠电子 | 携手同心 惠及未来

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