joy-it DMSO2D72 3 in 1 Oscilloscope Signal Generator Instruction Manual

JT-DMSO2D72
Portable 3-in-one oscilloscope, signal generator and multimeter

GENERAL INFORMATION

Dear customer,
Thank you for choosing our product. Please read the following important information before putting the device into operation. This oscilloscope is compact, portable and flexible. It has a TFT-LCD color display with a resolution of 320 x 240 pixels and adjustable backlight brightness. The maximum real time sampling rate can be up to 250 MSa/s. USB memory devices are also supported, the user can upgrade the firmware via USB, the edge trigger function is automatically detected and it has a user-defined fast offset calibration with A/D converter that can sample each channel simultaneously.

SAFETY INSTRUCTIONS

Safety Terms and Symbols:
following terms may appear on product:
Danger It represents that harms may be caused to you at once if you per- form the operation.
Warning It represents that latent harms may be caused to you if you per- form the operation.
Notice It represents that damage may possibly caused to the product or other properties if you perform the operation.
Symbols on the product: following symbols may appear on product:

| Notice Please read the manual
---|---
| Protective ground terminal
| Measuring ground terminal
| Chassis ground terminal

General Safety Summary
Read the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To evade potential hazards, use this product only as specified.
Only qualified personnel should perform maintenance.
Use suitable power cord. Use only the power cord specified for this prod- uct and certified for the country of use.
Connect and disconnect properly. Connect a probe with the oscilloscope before it is connected to measured circuits; disconnect the probe from the oscilloscope after it is disconnected from measured circuits.
Ground the product. This product is grounded through the grounding conductor of the power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded.
Connect the probe the right way. The probe ground lead is at ground potential.
Do not connect the ground lead to an elevated voltage.
Check all terminal ratings. To avoid fire or shock hazard, check all ratings and markings on the product. Refer to the product manual for detailed information about ratings before making connections to the product.
Do not operate without covers. Do not operate this product with covers or panels removed.
Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
Do not operate with suspected failures. If you suspect there is damage to this product, have it inspected by qualified service personnel.
Assure good ventilation.
Do not operate in wet/damp environments.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.

TECHNICAL SPECIFICATIONS

Oscillospe Specifications: -Horizontal
Rising time| ≤ 5 ns
Waveform Interpolation| (sin x)/x
Record length| 6000 samples Single channel 3000 samples Dual channel
SEC/DIV Range of 1, 2, 5 Sequence| 5 ns/div – 500s/div
Oscilloscope Specifications: -Vertical
A/D converter| 8-bit resolution
VOLTS/DIV range| 10mV/div –10V/div at BNC input
Measurement Range| ± 5 div
Measurement Range| ≤ 5 ns
Selectable analog bandwidth limit, typical| Typical 20 MHz (reduced to 6 MHz when using a 1x probe)
Low frequency response (-3db)| ≤ 10 Hz
DC gain accuracy| 10V/div – 10mV/div ±3% for normal or average acquisition mode
Trigger
Type| Edge
Mode| Auto, Normal, Single
Level| ± 4 divisions from centre of screen
Trigger level accuracy| 0,2 div*volts/div within 4 div.
Slope| Rising, falling, rising & falling
Source| CH1, CH2
Input
Coupling| DC, AC or GND
Input impedance (DC coupled)| 25pF ±3pF, 1MΩ ±2%
Probe attenuation| 1X, 10X
Supported probe attenuation factors| 1X, 10X, 100X, 1000X
Input protection voltage| 150 VRMS
Measurement
Values between cursors| Voltage Difference:  △V
Time Difference:  △T
Automatic measurement| Frequency, Amplitude
General specifications
Display type| 2.6 inch 64K color TFT-LCD
Display resolution| 320 horizontal x 240 vertical pixel
Display contrast| Adjustable
Power supply voltage| 100-240V AC, 50-60Hz OR 5V DC, 2A
Power consumption| < 2.5 W
Fuse| T, 3 A
Battery| 2 x 2600 mAh
Operating temperature| 0– 50°C
Storage temperature| -20-60°C
Allowed relative humidity| ≤ 40°C: ≤90% RH, 40-50°C: ≤60% RH
Cooling Method| Convection
Altitude:|
Operating and Nonoperating| 3 000 m (10 000 feet)
Random vibration| 0.31 gRMS  from 50 – 500Hz, 10 minutes on each axis
Nonoperating| 2,46 gRMS from 5 – 500 Hz, 10 minutes on each axis
Mechanical shock in operation| 50 g, 11 ms, half sine
Dimensions| 199 x 98 x 40 mm
Weight| 624 g
Arbitrary Waveform Generator:
Waveform Frequency| Sine: 1Hz-25MHz;   Square: 1Hz-10MHz;
Ramp: 1Hz-1MHz;   Expon: 1Hz-5MHz
Sampling rate| 250 MSa/s
Amplitude| 2.5 Vpp (50Ω)/5Vpp (High impedance)
Frequency resolution| 0,1 %
Channel| CH1 waveform output
Waveform depth| 512Sa
Vertical resolution| 12 bit
Output impedance| 50 Ω
Pulse width accuracy|  ± 10 ns
Digital Multimeter:
Maximum resolution| 4000 Counts
Testing Modes:| Voltage, Current, Resistance, Capacity, Diode, On-Off
Maximum Input Voltage| AC: 600 V/ DC: 600 V
Maximum Input Current| AC: 10 A / DC: 10 A
Range| Accuracy| Resolution
---|---|---
DC Voltage| 400.00mV| ±（0.8% + 5）| 100uV
4.000V| 1mV
40.00V| 10mV
400.0V| 100mV
600.0V| ±（1% + 2）| 1V
Overload protection: 400mV: 250V, other: 600Vrms.
AC Voltage| 4.000V| ±（1.2% + 5）| 1mV
40.00V| 10mV
400.0V| 100mV
600.0V| ±（1.5% + 5）| 1V
Frequency: 40Hz~400Hz;
Frequency of 400V and 600V: 40Hz~100Hz
DC Current| 40.00mA| ±（1% + 2）| 10uA
200.0mA| ±（1.5% + 2）| 100uA
4.000A| ±（1.8% + 2）| 1mA
10.00A| ±（3% + 2）| 10mA
Overload protection:
self restoring fuse: 200mA/250V, 4A and 10A range no fuse.
AC Current| 40.00mA| ±（1.3% + 2）| 10uA
400.0mA| ±（1.8% + 2）| 100uA
4.000A| ±（2% + 3）| 1mA
10.00A| ±（3% + 5）| 10mA
Frequency: 40Hz~400Hz;
self restoring fuse: 200mA/250V, 4A and 10A range no fuse.
Resistance| 400.0Ω| ±（1% + 3）| 0.1Ω
4.000KΩ| ±（1.2% + 5）| 1Ω
60.00KΩ| 10Ω
400.0KΩ| 100Ω
4.000MΩ| 1KΩ
40.00MΩ| ±（1.5%±3）| 10KΩ
Overload protection: 220Vrms
Capacity| 40.00nF| ±（3% + 5）| 10pF
400.0nF| 100pF
4.000uF| 1nF
40.00uF| 10nF
100.0uF| 100nF
Overload protection: 220Vrms
Diode| 0V~1.0V
On-Off| <50Ω

All specifications herein mentioned apply to the series oscilloscopes. Before checking an oscilloscope to see if it complies with these specifications, make sure it meets the following conditions:
The oscilloscope must have been operating continuously for twenty minutes un- der the specified operating temperature.
The Do Self Cal operation must be performed through the Utility menu if the oper- ating temperature changes by more than 5°C.
The oscilloscope must be within the factory calibration interval.
All specifications are guaranteed unless noted ‘typical’.

GETTING STARTED

This Oscilloscope is a small, lightweight portable instrument which provides the user with a convenient and easy to operate front panel with which you can perform basic tests.

• General Inspection: Please check the instrument as following steps after receiving: Check the shipping container for damage: Keep the damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electri- cally. Check the accessories: Accessories supplied with the instrument are listed in “Accessories” in this manual. If the contents are incomplete or damaged, please notify the franchiser. Check the instrument: In case there is any mechanical damage or defect, or the instrument does not operate properly or fails performance tests, please notify your reseller.
• Use of safety keyhole:

A safety keyhole is reserved on the back shell of the oscilloscope. Users need to purchase the safety lock by themselves. Wrap one end of the safety lock around a hard-to-move object, insert the other end into the safety lock hole, turn the key clockwise to lock the instrument, and then pull out the key. In this way, the most basic anti-theft requirements can be achieved.
Adjust the bracket
When using the instrument, you can open the support foot to tilt the instrument upward for easy operation and observation. When the instrument is not in use, the user can close the support foot to facilitate placement or handling. After adjusting the rack, the instrument can be suspended on the vertical plane.

• Front Panel
  The following diagram briefly describes the front panel of this oscilloscope.

• The user interface

• Functional CheckFollow the steps below to perform a quick functional check to your oscilloscope. Power Press the power key and the device starts. Press the power key again, and the device will shut down. Before starting it, please confirm that the
  battery has enough power. The oscilloscope is supplied with a power adapter with USB-Type-C plug. The input AC power supply is 100~240V, 50~60Hz. The output is 5V@2A. The power adapter can be used to supply the oscilloscope or charge the battery.
  When connect the power adapter to the oscilloscope, if the battery is not installed inside the oscilloscope, the power key backlight is red and flash; if the battery is installed inside the oscilloscope and the battery power is not filled, the power key backlight is red; if the battery is installed inside the oscilloscope and the battery power is full, the backlight of the source key is extinguishes.

Observe the waveform

1. Set the switch on the probe to 1X and connect the probe to Channel 1 on the oscilloscope. First, align the slot in the probe connector with the protuberance on the CH1 BNC and push to connect; then, turn to right to lock the probe in place.
2. If you use the probe hook-tip, the hook end should be removed, the probe pin should be inserted into the Gen Out output terminal, and the probe grounding clamp should be clamped on the metal outer ring of the Gen Out output terminal. Recommended input ~2V@1KHz peak-peak square wave.
3. Press the Auto button and you should see within a few seconds a square wave of about 2V peak-to-peak at 1KHz in the display. Repeat the steps to observe CH2.
   • Probe check

Safety
When using the probe, keep your fingers behind the guard on the probe body to avoid electric shock. Do not touch metallic portions of the probe head while it is connected to a voltage source. Connect the probe to the oscilloscope and connect the ground terminal to ground before you start any measurements.

Manual Probe Compensation
Upon the first connection of a probe and an input channel, you should manually perform this adjustment to match the probe to the input channel. Uncompensated or wrong compensated probes may lead to errors or faults in measurement. To adjust the probe compensation, follow the steps below.

1. Press Channel button to enter channel setting menu, Set the Probe option attenuation in the channel menu to 10X. Set the switch on the probe to 10X and connect the probe to Channel 1 on the oscilloscope. If you use the probe hook-tip, the hook end should be removed, the probe pin should be inserted into the Gen Out output terminal, and the probe grounding clamp should be clamped on the metal outer ring of the Gen Out output terminal. The oscilloscope with signal generator function needs to set output signal as 2V @ 1KHz square wave; The Gen Out terminal of the oscilloscope without signal generator function automatically outputs 2V @ 1KHz square wave. Press the Auto button.

2. Check the shape of the displayed waveform.
   Compensated correctly
   Overcompensated
   Undercompensated

3. If necessary, use a nonmetallic screwdriver to adjust the variable capacity of your probe until the shape of the waveform turns to be the same as the above figure. Repeat this step as necessary. See the figure below for the way of adjustment. Probe Attenuation Setting: Probes are of various attenuation factors which affect the vertical scale of the signal. The Probe Check function is used to verify if the Probe attenuation option matches the attenuation of the probe.

You can press Channel button to enter the channel setting menu and select CH1, and select the Probe option that matches the attenuation factor of your probe. Make sure that the Attenuation switch on the probe matches the Probe option in the oscilloscope. Switch settings are 1X and 10X.
When the Attenuation switch is set to 1X, the probe limits the bandwidth of the oscilloscope to 6MHz. To use the full bandwidth of the oscilloscope, be sure to set the switch to 10X.

FUNCTION INTRODUCTION

Menu and Control Keys
All the keys are described as follows:
Scope: Oscilloscope mode
DMM :Multimeter mode
AWG：Waveform generator
Menu Function menu
Trig：Trigger setting menu
Enter: In scope, it saves the userdefined settings of the oscilloscope; In generator, press the button to confirm after entering the character.
Auto: It adjusts the horizontal and vertical scales of the oscilloscope automatically and sets the trigger coupling, type, position, slope, level and mode, etc., to acquire a stable waveform display.
Channel: Channel setting menu
Time: Horizontal setting menu
Zoom and move keys:
In the trigger menu, the left and down keys push the trigger level down, and the right and upper direction keys push the trigger level up;
In the channel menu, the upper and lower direction keys change the zero level position of the channel, and the left and right direction keys change the volt/div of the channel;
In the time base menu, the upper and lower direction keys change the time/div, and the left and right direction keys change the horizontal trigger position;
In DMM, switch measurement function;
In generator, after choosing a parameter, the left and lower direction key will reduce the parameter value, the right and up direction key will increase the parameter value; it is also used for the digital selection of the virtual keyboard.
F1/F2/F3/F4: Multi function key, in each menu mode, is responsible for selecting corresponding menu items in the screen.
Shortcut keys. Long press this button to enter the menu, and choose shortcut key function; After setting, press this button single time to respond to the corresponding function.
In scope, stop or run the waveform acquisition;
In DMM, hold the measuring data or update data;
In generator, turn on or off the waveform output.
Power key.

• Connectors Gen Out: The Gen Out terminal of the oscilloscope without signal generator function always outputs 2V @ 1KHz square wave.
• Automatic set
  Auto set is one of the advantages digital oscilloscopes have. When you push the Auto button, the oscilloscope will identify the type of waveform (sine or square wave) and adjust controls according to input signals so that it can accurately display the waveform of the input signal. Functions| Settings
  ---|---
  Cursor| Off
  Display Format| Set to YT
  Horizontal Position| Adjusted
  SEC/DIV| Adjusted
  Trigger Level| Set to 50%
  Trigger Mode| Auto
  Trigger Source| Adjusted
  Trigger Slope| Adjusted
  Trigger Type| Edge
  Vertical Bandwidth| Full
  Vertical Coupling| Unchanged
  VOLTS/DIV| Adjusted

The Auto function examines all channels for signals and displays corresponding waveforms. Auto determines the trigger source according to the following conditions :  If multiply channels get signals, the oscilloscope will use the channel with the lowest frequency signal as the trigger source.  If no signals are found, the oscilloscope will use the lowest-numbered channel displayed in Auto Scale as the trigger source. If no signals are found and no channels are displayed, the oscilloscope will display and use Channel 1 as the trigger source.

• Default settings
  Menu or Sys- tem| Option, Button or Knob| Default Setting
  ---|---|---
  Cursor| Type| Off
  Source| CH1
  Horizontal (amplitude)| ±4div
  Vertical (time)| ±4div
  Display| Format| YT
  Horizontal| Position| 0.00s
  SEC/DIV| 500μs
  Measure| On or Off| Off
  Trigger (Edge)| Source| CH1
  Slope| Rising
  Mode| Auto
  Level| 0.00v
  Vertical Sys- tem, All Channels| Bandwidth Limit| Unlimited
  Coupling| AC
  Probe Attenuation| 1X
  Position| 0.00div (0.00V)
  VOLTS/DIV| 1V

Long press button, to enter Short key setting menu, and select Default.
Press button, pops up the prompt to recall the default settings on the screen, now press F1 to confirm. The oscilloscope will display the CH1 waveform and remove all the others. Press F4 to cancel. The table below gives the options, buttons and controls that change settings at default setup. The following settings do not change when you recall default settings: Language options, saved settings, saved waveforms, saved reference waveforms, calibration data.

• Horizontal System
  Press Time button to enter horizontal system menu, use the direction keys to change the horizontal scale (time base) and the horizontal trigger position. When you change the horizontal scale, the waveform will expand or contract to the screen center.
  1. SEC/DIV Knob: Used to change the horizontal time scale to magnify or compress the waveform horizontally. If the waveform acquisition is stopped (by using button), press Time button and Up or Down buttons to expand or compress the waveform.
  2. Horizontal Position Knob: Used to control the trigger position against the screen center. Press Time button and Right or Left buttons to move the waveform right or left. The key resolution vary according to time base. Press “AUTO” key can make the horizontal position return to zero.
  3. Mode: Y-T, X-Y, Roll, Scan. Y-T: YT format shows the vertical voltage in relation to time (horizontal scale). Press Time->Mode to set.
  X-Y: The XY mode is used to analyze phase differences, such as those represented by Lissajous patterns. The format plots the voltage on CH1 against the voltage on CH2, where CH1 is the horizontal axis and CH2 is the vertical axis. You may view the same waveform in XY mode. To perform this operation, stop the acquisition and press Time ->Mode to change the display mode to X-Y.
  Roll: In Roll mode, the waveform display rolls from right to left. Trigger or horizontal offset control of waveforms is available during Roll Mode, and it’s only available when set to 100ms/div or slower. Press Time->Mode to change the display mode to Roll, the time/div will be changed to 100ms/div automatically. Scan: In Scan Mode, the waveform display scan updates from left to right. In Scan mode, trigger and horizontal offset control of waveforms are available during Scan Mode. This mode is only available when set to 100ms/div or slower. Generally, used for measuring low frequency signal. When the time/div is 100ms/div or slower, the oscilloscope automatically enters the scan mode.

Vertical System
Vertical system can be used to adjust the vertical scale and location and other set- tings of the channel. Each channel has a separate vertical menu, and each channel can be set separately.

1. Vertical Position
   Press Channel->F1 to select the channel, and press Up or Down direction keys to move the vertical position of the selected channel.

2. VOLTS/DIV Settings
   The range of Volt/div is 10mV/div-10V/div (1X), or 100mV/div-100V/div (10X), 1V/div- 1000V/div (100X), step by 1-2-5. Press Channel->F1 to select the channel, and press Right or Left direction keys to change the Volt/div of the selected channel.

3. Channel Setting Menu
   Options| Settings| Comments
   ---|---|---
   On/Off| On Off| Turn on the waveform display. Turn off the waveform display.
   Coupling| DC AC GND| DC passes both DC and AC components of the input signal. AC blocks the DC component of the input signal and attenu- ates signals below 10Hz. GND disconnects the input signal.
   Probe| 1X 10X 100X| Selects a value according to the probe attenuation factor so as to ensure correct vertical readouts.
   Reduce bandwidth to 6MHz when using a 1X probe.
   BW Limit| On Off| Limits the bandwidth to reduce display noise; filters the signal to eliminate noise and other unnecessary HF compo- nents.
   Invert| On Off| The invert function turns the displayed waveform 180 de- grees, with respect to the ground level. When the oscillo- scope is triggered on the inverted signal, the trigger is also inverted.

• Trigger System
  The trigger determines when the oscilloscope begins to acquire data and display a waveform. Once a trigger is properly set up, the oscilloscope can convert unstable displays or blank screens to meaningful waveforms.
  The triggering mode of this series oscilloscope is edge trigger.
  Edge trigger distinguishes the trigger points by seeking the specified edge (rising, falling, rising & falling) and trigger level.
  Press Trig button to enter trigger menu.
  Trigger Source: Select the trigger source signal to CH1 or CH2. You can use the trigger source options to select the signal that the oscilloscope uses as a trigger.

Trigger Mode: You can select the Auto or Normal mode to define how the oscilloscope acquires data when it does not detect a trigger condition. Auto Mode performs the acquisition freely in absence of valid trigger. It allows the generation of untriggered waveforms with the time base set to 100ms/div or slower. Normal Mode updates the displayed waveforms only when the oscilloscope detects a valid trigger condition. Before this update, the oscilloscope still displays the old waveforms. This mode shall be used when you only want to view the effectively triggered wave- forms. In this mode, the oscilloscope displays waveforms only after the first trigger. To perform single trigger acquisition, the trigger mode can be set to “single”. When triggered, a single waveform is acquired and then stop.
Force Trigger: Used to complete an acquisition regardless of an adequate trigger signal. This button becomes useless if the acquisition is already stopped.
Trigger Level: It sets the amplitude level the signal must cross to cause an acquisition when using the Edge or Pulse Width trigger. Press Trig button to enter, and press Up or Down direction keys to change the trigger level.

• Save Waveforms
  Press Menu button to enter, and select Save to enter store waveform menu. The waveform can be saved to the oscilloscope inside, also can be recalled to view.
  The Save Menu Table:

To save the waveform, follow these steps:

1. Press F1 to select the storage position of the waveform.

2. Press F2 to save the waveform data to the specified position. Also, users can long press button to enter, and select F4->F2 (Data Save) as shortcut keys.
   Press button one time to save the current waveform data.

3. Press F3, to recall the saved waveform. The waveform can be enlarged or reduced in the Channel or Time menu by using the direction keys.

Attention:

1. Waveform storage can not only save the waveform of the current channel, but also save the current state settings at the same time.
2. Users can permanently store 6 waveforms in the oscilloscope memory and rewrite them at any time.

Reference Waveform
The REF channel is used to display the reference waveform, which can compare the actual waveforms with the reference waveforms to find out the differences.
Press Menu button to enter, and select Ref to enter reference Waveform menu. REF Menu Table:

Close the REF waveform.
Source| CH1
CH2| Select CH1 to save as a REF waveform.
Select CH2 to save as a REF waveform
Save| | Save the REF waveform.

To save the reference waveform, follow these steps:
Press F1 to select the position of the reference waveform.
Press F2 to open the REF channel.
Press F3 to select the source to CH1 (or CH2), and only select the open channel.
Press F4 to save the current waveform to the specified location.

• Measurement Scale measurement
  Graticule: This method allows you to make a quick, visual estimate and take a simple measurement through the graticule divisions and the scale factor. For example, you can take simple measurements by counting the major and minor graticule divisions involved and multiplying by the scale factor. If you counted 6 major vertical graticule divisions between the minimum and maximum values of a waveform and knew you had a scale factor of 50mV/division, you could easily calculate your peak-to-peak voltage as follows: 6 divisions x 50mV/division = 300mV.

Cursor measurement
The cursor measurement has two parallel lines on the screen, and move two lines to measure the time and voltage parameters of the input signal. The result of cursor measurement will be displayed on the second page of the cursor menu. Before use cursor measurement, make sure that the measured source is the signal you need to measure. Cursor Measurement Menu Table:

Close the cursor measurement.
Type| Voltage
Time| The horizontal line is shown to measure the voltage parame-ters. The vertical line is shown to measure the time parameters.
Source| CH1
CH2| Select the measured source.
Cursor1| | Select Cursor1 and press up, down, left and right keys to move the Cursor1 position, and display the Cursor1 value.
Cursor2| | Select Cursor2 and press up, down, left and right keys to move the Cursor2 position, and display the Cursor2 value.
Incre- ment| | The difference between the Cursor1 and the Cursor2.

Press Menu button to enter, and select Cursor to enter cursor measurement
To do cursor measurement, follow these steps:

1. Press F1 to open the cursor measurement;
2. Press F2 to select a type of cursor measurement.
3. Press F3 to select the channel that needs to be measured.
4. Press F4 to enter the second page, press F1 or F2 to select Cursor1 or Cursor2, press  up, down, left and right to move Cursor1 or Cursor1;
5. The result of cursor measurement will be displayed on the cursor menu.

Automatic Measurement
The oscilloscope provides 2 kinds of automatic measurements, including frequency and amplitude.
Press Menu button to enter, select Measure to enter automatic measurement. Press F1 to open, the measurement results will be displayed in the top left corner of the screen.
Attention:
In the measurement result, the yellow font is the result of CH1, and the green font is the result of CH2.

• Utility
  Press the Menu Button to enter.

English
French| Set the menu language.
Sound| On
Off| Open the key sound.
Close the key sound.
Backlight
luminance| 1~10| Set backlight brightness of the screen.
Backlight time| 30s 60s 90s 120s
Unlimited| Set the screen backlight time.
System information| | Display system information, such as software version or PCB version.

Automatic shutdown

| 5 Minute
10 Minute
20 Minute
30 Minute
Unlimited| Set automatic shutdown time.
Calibration| Start
Return| Start the self calibration.
Exit the self calibration.

Note:

1. Backlight time and automatic shutdown time will not be executed when the oscilloscope is plugged in with an external charging device or connected to a computer via a USB cable.
2. Shutdown automatically saves last setup.

Self calibration
The self calibration routine helps optimize the oscilloscope signal path for maximum measurement accuracy. You can run the routine at any time but should always run it if the ambient temperature changes by 5°C or more. For a more accurate calibration, please power on the oscilloscope and wait for 20 minutes until it has adequately warmed up. To do self calibration, follow these steps:

1. Ensure that no input signal is input, otherwise it may damage the instrument.
2. Press Menu button to select the self calibration function.

Shortcut key
Long press button to enter shortcut key settings menu, and choose shortcut key function; After setting, press this button single time to respond to the corresponding function.
Default settings: Long press button to enter, and select F1 (Default) as the shortcut key, then press button one time and select F1 TO confirm to recall the default settings Custom settings: Long press button to enter, and select F2 or F3 (custom 1 or 2) as shortcut keys. Now press Enter button and click F1 to confirm to save the current settings to custom settings. Press button one time and click F1 to con- firm to recall the custom settings.
Save data: Long press button to enter, and select F4->F1 (Data Save) as shortcut keys. Press Menu -> Save to enter the save menu, select a location, press button one time to save the current waveform data.

PC SOFTWARE

1.2
Now go to the folder you just unzipped and run Setup.EXE to start the installation.

1. Install the software
   Download the latest version of the software from us by clicking here and then follow the steps below to install the software.
   1.1
   First, unzip the file you just downloaded.

1.3
Now that you have started the installation you will see the following:

1.4
The next step prompts you to select a folder in which to install the program. Select the installation path and click Next >.

1.5
Just click Next > here to start the installation.

Just wait until this has finished the process.

1.7
Now you can finish the software installation by clicking Finish >.

1.8
After the installation of the software is completed, the installation for the device driver starts.

1.9
The next step will only show you that the driver installation is complete.

Now you can connect the device to your PC and check the installation of the driver.
To do this, open the computer’s device manager and find the oscilloscope.
If the device icon is displayed as in this picture, you have to install the driver manually.

The drivers are located in the software package in the Driver folder. Right- click on the device in the Device Manager and select “Update the driver software” and select the file path to install the driver.
After successful installation of the driver, the following will be displayed:

DIGITAL MULTIMETER

Interface

Measurement

1. DC and AC voltage measurement
   Press the power button to turn on, then press the “DMM” button to enter to the
   multi meter function interface;
   Press the up, down, left and right direction keys or F1, F2, F3, F4 multi- function keys
   to select “DC V”, “DC mV” or “AC V”;
   Insert the black pen into the input port of the COM banana socket, and insert the
   red pen into the input port of the V/Ω/C banana port;
   Connect the red and black forms to the measured point. The voltage value of the
   measured point will be displayed on the screen.

2. DC and AC current measurement
   Press the power button to turn on, then press the “DMM” button to enter to the multi meter function interface; To measure the DC current greater than 200mA, press the up, down, left and right keys or F1, F2, F3, F4 multi function keys to select “DC A” or “AC A”, and insert the black pen to the input end of the COM banana socket, and insert the red pen into the input port of the “A” banana socket; To measure the DC current less than 200mA, press the up, down, left and right keys or F1, F2, F3, F4 multi function keys to select “DC mA” or “AC mA”, and insert the black pen to the input end of the COM banana socket, and insert the red pen into the input port of the “mA” banana socket.; Connect the red and black forms to the measured point. The current value of the measured point will be displayed on the screen.

3. Resistance measurement
   Press the power button to turn on, then press the “DMM” button to enter to the multi meter function interface; Press the up, down, left and right direction keys or F1, F2, F3, F4 multi-function keys to select “OHM”;
   and insert the red pen into the input port of the V/Ω/C banana port; Connect the red and black forms to the measured point. The resistance value of the measured point will be displayed on the screen.

4. Capacity measurement Press the power button to turn on, then press the “DMM” button to enter to the multi meter function interface; Press the up, down, left and right direction keys or F1, F2, F3, F4 multi-function keys to select ” “; Insert the black pen into the input port of the COM banana socket, and insert the red pen into the input port of the V/Ω/C banana port; Connect the red and black forms to the measured point. The capacitance value of the measured point will be displayed on the screen.

5. Diode measurement Press the power button to turn on, then press the “DMM” button to enter to the multi meter function interface; Press the up, down, left and right direction keys or F1, F2, F3, F4 multi-function keys to select ” “; Insert the black pen into the input port of the COM banana socket, and insert the red pen into the input port of the V/Ω/C banana port; Connect the red and black forms to the measured point. The diode value of the measured point will be displayed on the screen.

6. Buzzer measurement Press the power button to turn on, then press the “DMM” button to enter to the mul- ti meter function interface; Press the up, down, left and right direction keys or F1, F2, F3, F4 multi-function keys to select ” “; Insert the black pen into the input port of the COM banana socket, and insert the red pen into the input port of the V/Ω/C banana port; Connect the red and black forms to the measured point. If the resistance of the measured point is less than 50 ohms, the instrument will emit “drop” sound.

7. Data hold function Press the button on the instrument, and the displayed data will hold on the dis-

SIGNAL GENERATOR

Press the power button to turn on, and then press the “AWG” button to enter the waveform generator function interface.

1. Set type
   Press F1 button to select the desired signal waveform, the optional waveform type includes square, triangle, sine, trapezoidal and four arbitrary.

2. Set frequency
   Press F2 button to select Frequency, then use the up, down, left and right direction keys to adjust the frequency, press F2 button to open the digital keyboard again, use the up, down, left, right direction keys and Enter key to set frequency parameter, select “OK” and press Enter button to confirm.

3. Set amplitude
   Press F3 button to select Amplitude, then use the up, down, left and right direction keys to adjust the frequency, press F3 button to open the digital keyboard again, use the up, down, left, right direction keys and Enter key to set frequency parameter, select “OK” and press Enter button to confirm.
   Note that the entered voltage is the half of the peak-to-peak voltage.

4. Set offset
   Press F4 button to enter the second page. Press F2 to select Offset, then use the up, down, left and right direction keys to adjust the frequency, press F2 button to open the digital keyboard again, use the up, down, left, right direction keys and “Enter” key to set frequency parameter, select “OK” and press Enter button to confirm.

5. Set duty cycle Enter the second page. Press F3 to select Duty, then use the up, down, left and right direction keys to adjust the frequency, press F3 button to open the digital keyboard again, use the up, down, left, right direction keys and Enter key to set frequency parameter, select “OK” and press Enter button to confirm.

6. Generate an arbitrary waveform
   It is necessary to edit the arbitrary waveform in connection with the software and download it into the machine. There are 4 arbitrary wave positions, and each position can permanently store an arbitrary wave .

7. After setting the waveform parameters, press the button to turn on or off the signal output. The output waveform of the signal generator can be observed through an oscilloscope.

Output the sine waveform
Output a sine waveform with 10KHz/2.5Vpp as follows:

1. Press AWG button to enter the waveform generator function interface.
2. Press F1 to select “Sine”
3. Frequency: First press F2 button to select Frequency, then use the up, down, left and right direction keys to adjust the frequency. Second, press F2 button to open the digital keyboard again, use the up, down, left, right direction keys and “Enter” key to set frequency parameter, select “OK” and press Enter button to confirm.
4. Amplitude: First press F3 button to select Amplitude, then use the up, down, left and right direction keys to adjust the amplitude. Second, press F3 button to open the digital keyboard again, use the up, down, left, right direction keys and Enter key to set amplitude parameter, select “OK” and press Enter button to confirm. Set the amplitude to 2.5V
5. Offset: Press F4 to enter the second page. First press F1 button to select Offset, then use the up, down, left and right direction keys to adjust the offset. Second, press F1 button to open the digital keyboard again, use the up, down, left, right direction keys and “Enter” key to set offset parameter, select “OK” and press Enter button to confirm.
6. Press the button, the backlight of the button turns green, i.e. output sine waveform.
7. The waveform ob-served by an oscilloscope is as follows:
8. Place a checkmark “√” in the box in front of “on/off” to open the signal output.
9. Under “Signal type”, select “arb” and set the appropriate frequency and amplitude.
10. Under “Arb Channel” select Arb1/Arb2/Arb3/Arb4. Any channel can store only any waveform which was downloaded last. After power off, turn on the power again and it will be recalled automatically.
11. Draw any waves with the mouse in the waveform area.
12. Connect the Gen Out connector to the oscilloscope for monitoring

CHARGE

When the battery on the screen is displayed as blank, it indicates that the battery is about to run out. When the battery power is too low, the oscilloscope will prompt “Power off after 5s”. In order to avoid the automatic shutdown of the oscilloscope due to insufficient power supply, please charge it in time.
If the power button is pressed, the oscilloscope will not react, indicating that the battery power may be exhausted. You can charge the oscilloscope in the following way:
Charge the oscilloscope through charger: Connect the oscilloscope to the power socket through the USB data line and charger distributed by the instrument for charging.
Charge the oscilloscope through the USB interface: Connect the oscilloscope to a computer or other equipment through the USB data line.
When charging, turn on the oscilloscope and the battery frame on the screen will change.
When the battery is full, the oscilloscope will automatically stop charging.

• Storage and Replacement of the battery
  Storage
  Lithium batteries must be stored in clean, dry and ventilated rooms. Contact with corrosive substances should be avoided and the have to be kept away from fire and heat sources.
  If the lithium battery is not used for a long time (for example, more than 6 months), it should be charged with 50%-70% electricity, and removed from the instrument, and stored in a dry and cool environment.
  If the lithium battery rusts, leaks, bulges and other phenomena, it should be removed immediately and scrapped.

Replacement
Batteries can be recharged repeatedly, but they are vulnerable to wear and tear. If standby time is found to be greatly reduced, batteries need to be replaced. The battery specification is 18650 lithium battery, 3.7V, 2600mA. Please refer to the following to replace it. Unfold the supporting leg, there are two screws. Remove the screws and remove the battery cover, you will see the batteries. Now you can remove the battery and replace. Attention: Pay attention to the positive and negative poles of batteries when replacing baterries.

TROUBLESHOOTING

1. If the oscilloscope does not start up at power on, follow these steps: Check whether the battery is installed and confirm whether the battery level is enough. If the battery level is not enough, use the power adapter to charge. Restart the instrument after the battery level is enough. Contact your local distributor or directly keep touch with Joy-IT Support department if the oscilloscope still can not be turned on normally.

2. If there is no display of waveforms on the screen when the oscilloscope is turned on, follow these steps:
   Check the probe to assure its proper connection to the input BNC.
   Check the channel switch (Channel button) to make sure it has been turned on.
   Check the input signal to verify it has been connected to the probe correctly. Affirm that all measured circuits have signals to output. Turn up the magnitude for DC signals with large magnitude. In addition, you may press the Auto button to perform an automatic detection of signals at first. Contact Joy-IT Technical Support department in time if there is still no display of waveforms.

3. If the waveform of the input signal is distorted seriously, follow these steps:
   Check the probe to assure its proper connection to the channel BNC.
   Check the probe to assure its good connection to the measured object.
   Check the probe to verify it has been well calibrated.
   Otherwise, refer to the content about calibration described in this manual.

4. If the waveform is rolling continuously on the screen but can not be triggered, follow these steps:
   Check the trigger source to make sure it consistent with the input channel.
   Check the trigger level to assure its correct adjustment.
   You may press TRIGGER button to enter trigger menu, and use Up, Down, Right, Left direction keys to adjust trigger level to return to signal.

GENERAL CARE AND CLEANING

General Care
Do not place or leave the instrument in a location where the LCD screen may be exposed to direct sunlight for extended periods of time.
Note: To avoid damage to the oscilloscope or probes, do not expose them to sprays, liquids, or solutions.
Cleaning
Inspect the oscilloscope and probes as often as working conditions require. To clean the external surfaces, perform the following steps: Use a lint-free rag to remove dust on the oscilloscope and probes. Be careful not to scratch the smooth display filter. Use a cloth dampened with water to clean the oscilloscope. For an even more thorough cleaning, you can also use a solution of 75% isopropanol diluted with water. Note: To avoid damage to the surface of the oscilloscope or probes, do not use corrosive or chemical cleaners.

ACCESSORIES

The following accessories are available:

• 1x Passive probe oscilloscope (1:1) / (1:10)
• 1x Charger
• 1x USB-A to USB-C cable
• 2x BNC to crocodile clip cable
• 2x Measuring tip cable Multimeter

PRODUCT RECYCLING

Our information and take-back obligations under the Electrical and Electronic Equipment Act (ElektroG).
Symbol on electrical and electronic equipment:
This crossed-out trash can means that electrical and electronic equipment does not belong in the household trash. You must hand in the old equipment at a collection point. Before handing in, you must separate used batteries and accumulators that are not enclosed by the old device.
Return options: As an end-user, when you purchase a new device, you may return your old device (which performs essentially the same function as the new device you purchased from us) for disposal at no charge. Small devices for which no external Dimensions larger than 25 cm are can be returned in household quantities regardless of the purchase of a new device.
Possibility of return at our company location during opening hours: Simac GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn, Germany.
Possibility of return in your area: We will send you a parcel stamp with which you can return the device to us free of charge. To do so, please contact us by e-mail at Service@joy-it.net or by phone.
Information on packaging: Please pack your old device securely for transport. If you do not have suitable packaging material or do not wish to use your own, please contact us and we will send you suitable packaging.

SUPPORT

We are also there for you after the purchase. If any questions remain or problems arise, we are also available to assist you via email, phone and ticket support system:

E-Mail: service@joy-it.net
Ticket System: http://support.joy-it.net
Phone: +49 (0)2845 9360-50 (Mon – Thur: 09:00 – 17:00 o‘clock,
Fri: 09:00 – 14:30 o‘clock)
For more information, please visit our website: www.joy-it.net
Published: 2023.10.05
www.joy-it.net
SIMAC Electronics GmbH
Pascalstr. 8, 47506 Neukirchen-Vluyn

References

• ITnet | Servizi di Colocation e Cloud
• Joy-IT Helpdesk
• For Makers and Professionals | Joy-IT

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