KLEIN TOOLS ET910 USB Digital Meter and Tester Instruction Manual

: June 5, 2024
: KLEIN TOOLS

Table of Contents

GENERAL SPECIFICATIONS
FUNCTION BUTTONS
SYMBOLS ON TESTER
OPERATING INSTRUCTIONS
CLEANING
STORAGE
DISPOSAL / RECYCLE
CUSTOMER SERVICE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

KLEIN TOOLS ET910 USB Digital Meter and Tester Instruction Manual

GENERAL SPECIFICATIONS

The Klein Tools ET910 is a USB digital meter and tester combination for USB-A (Type A) ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy and resistance simultaneously. It can also test the maximum current delivery capability of the USB port with built-in fixed loads so user need not connect to an external load. It will function with any USB-A port that has the ability to deliver power.
It requires no batteries, as it draws power from the power source.

Measurement Range:

Voltage: 3 to 20V DC, accuracy +/- 1% (+/- 2 Bytes)
Current: 0.05 to 3A, accuracy +/- 1% (+/- 2 Bytes)
Charge delivered: 99,999mAh MAX
Energy delivered: 999Wh MAX
Resistance: 400Ω MAX
Elapsed Time: Up to 999 hours, 59 min, 59 sec*
Based on display layout

Operating and Storage Altitude: Up to 6562 ft. (2000 m)
Operating and Storage Temp: 14° to 122°F (-10° to 50°C)
Relative Humidity: <95% non-condensing
Dimensions: Tester: 4.31″ x 2.15″ x 0.98″ (110 x 54 x 25 mm) Cable: Approx.
4″ (100 mm) • Weight: 2.8 oz. (78 g)
Pollution degree: 2
Drop Protection: 6.6 ft. (2 m)
Ingress Protection: IP20
Compatibility: Qualcomm Quick Charge® Compatible
Standards: Conforms to UL STD. 61010-1, 61010-2-030.
Certified to CSA STD. C22.2 No. 61010-1, 61010-2-030.

Specifications subject to change.

FUNCTION BUTTONS

MODE BUTTON 4 (Screen Toggle/Data Storage/Memory reset)

The Mode button serves three purposes:

Switch between screens (FIG. 2): From the default screen, pressing and releasing once will switch to the Memory Screen.
Data/Memory Storage: To record a reading during live monitoring event, press and hold the Mode button for 3 seconds. Release the button after the memory location (i.e. M:1) flashes momentarily on the screen. The next set of readings will be stored at the next available location until all 10 memory locations are used. NOTE: After all 10 locations are used, subsequent readings will overwrite the original 10 stored readings, beginning with M:1. NOTE: When in the Memory screen, if the Mode button is not pressed within 3 seconds, the display will return to the Default screen.
Memory Recall/Reset: When in the Memory Screen, repeated pressing will cycle through all 10 memory locations, beginning with M:1. You must scroll through all 10 locations to exit. NOTE: If no data has been stored into memory, pressing the Mode button will do nothing. The ET910 will only display memory locations containing stored data.
To reset or erase all data in memory, press and hold the Mode button for 5 seconds from the Memory screen until the letters CLR flash in the upper right corner (Fig. 2). All data in memory will be erased in all 10 memory locations.

FUNCTION BUTTONS

Power source INPUT (USB-A)
Load OUTPUT (USB-A)
Current Test Load button
Mode button
Current Test Load LED Indicator
LCD display
Ventilation slots (front & back)

BUTTONS

A. DC voltage
B. DC current
C. Capacity/Charge delivered (mAh)
D. Elapsed Time (Hour:Min:Sec)
E. Memory cleared indicator
F. PASS/FAIL indicator
G. Energy delivered (Wh)
H. Resistance (Ω)
I. Memory Location (M:1, M:2, etc)

NOTE: No user-serviceable parts inside.

TEST LOAD BUTTON 3 (Selects current load to output)

The first press of the Test Load button will enter Testing mode, defaulting to a test load value of 0.5A. To select a different value, press the Test Load button repeatedly until the desired value is selected. Available test load values are 0.5A, 1.0A, 2.0A, and 3.0A.
The selected load value is indicated by the red LEDs beneath the display. Testing will initiate at the indicated load after three seconds of releasing the Test Load button, so it is important to select the desired load quickly.
NOTE: The output USB 2 is disabled when the test load is used.

WARNINGS

To ensure safe operation and service of the tester, follow these instructions. Failure to observe these warnings can result in severe injury or death.

This tester will NOT display current below 50 mA, even if it is allowing this to pass through. NOTE: The display will show zero current.
DO NOT use with ports that operate outside of the rated voltage and current.
Before each use verify tester operation by measuring a known voltage or current.
NEVER use on a circuit with voltage or current that exceeds the maximums specified for this device. When maximums are exceeded, the display will read “OVERLOAD” and the output port will be disabled.
DO NOT use during electrical storms or in wet weather.
DO NOT use if tester appears to be damaged.
Use caution when working with voltages above 25V AC RMS or 60V DC. Such voltages pose a shock hazard. NOTE: Voltage above 24V DC will damage product.
Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

CAUTION

DO NOT attempt to repair this tester. there are no serviceable parts.
DO NOT modify this tester in any way.
DO NOT expose to extremes in temperature or high humidity.
This tester will NOT be able to monitor a source port if any of the following conditions occur:
- The USB port or plug is not properly connected.
- The source device shuts down. Some portable storage batteries have auto-shutdown or standby modes to save power if no load is detected from downstream device.

SYMBOLS ON TESTER

Warning – Risk of electric shock	Read instructions before using

Important information: It is important that users of this tester read, understand, and follow all warnings, cautions, safety information, and instructions in this manual before operating this tester.
Failure to follow instructions could result in death or serious injury.| This product has been independently tested by Intertek and meets applicable published standards
Conformité Européenne: Conforms with European Economic Area directives
UKCA – UK Conformity Assessment
USB

OPERATING INSTRUCTIONS

MONITORING MODE

NOTE: The input plug must be connected to a powered USB device before the downstream device is connected to the output port. “Downstream device” refers to any device that has the ability to draw current over USB.

Connect the input connector to the USB power source to be monitored
- The display will turn on with Klein Tools logo screen and move quickly to the Default Screen (FIG 2).
- If the source port has power, it will only display a live voltage reading within the operating range, 3-20V DC.
  NOTE: Most USB ports deliver ~5V DC.
Connect the device being charged at output port. The display will show actual readings (FIG. 2).

TESTING MODE

NOTE: Disconnect external load to operate in this mode.

The ET910 can be used to test the maximum current that may be delivered from a powered USB port.

Connect the input connector to the USB port to be monitored.
- The display will turn on with Klein Tools logo screen and move quickly to the Default Screen (FIG 2).
- If the source port has power, it should only display a live voltage reading within the operating range,
20V DC. NOTE: Most USB ports deliver ~5V DC.
Press the Test Load button to select test load.
Testing loads under 10V will take 3 seconds; loads over 10V will take 1 second. The red LED remains lit during testing. Once complete, the results will be displayed, including “PASS” or “FAIL”. “PASS” indicates that the USB port delivered up to the load current being tested. LED shuts off after testing is complete.
NOTE: Some USB power sources have integrated self-protection circuitry which the tester may trigger or reset, shutting off the source output, resulting in the tester also shutting off, failing the test.
NOTE: If the tester heats up beyond operating temperature following multiple current measurements, test mode will automatically deactivate and “HOT” will show on the display. If this occurs, disconnect all external input and output devices until the tester returns to normal operating temperature.
To save the test data, see Data/Memory Storage and Recall in the FUNCTION BUTTONS section.
To move on to the next test, press and release the Test Load or Mode button. The “PASS” or “FAIL” indicator will disappear. The tester is now ready for the next test. To switch to Monitoring mode, see MONITORING MODE section. NOTE: “mAh” resets only when source is disconnected.

CLEANING

Be sure the tester is disconnected from both the input and output port. Use clean, dry, soft lint-free cloth to wipe down the entire unit.
Do NOT use abrasive cleaners or solvents

STORAGE

Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the tester to return to normal operating conditions before using.

DISPOSAL / RECYCLE

Do not place equipment and its accessories in the trash. Items must be properly disposed of in accordance with local regulations. Please see www.epa.gov/recycle for additional information.