The klein tools et900 is a usb digital meter for common standard usb a type a ports including qualcomm quick charge ports.
Usb voltage measuring device.
It accurately and reliably measures and displays the usb port voltage current capacity energy and resistance simultaneously.
With newer systems you d be hard put to find a usb port that isn t usb 3 0 however you will still have a composite port which likely doubles as a charging port and is what you should use to connect a usb 2 0 printer the charging port on your system is the one that will charge a device even if your laptop is off and will probably.
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It comes with a bright led segment display.
Just insert the tester between the power source and the cable and you will be able to see the voltage and amperage draw and some other characteristics.
This device can measure voltage and current consumption of the devices like mobile tablets etc.
Not all usb ports on your laptop or desktop are the same.
Analog voltage output device with 8 high drive channels 8 digital i o and 1 counter input.
Temperature and voltage measurement device with 8 channels supports 4 sensor types including.
It can function with any usb a port that has the ability to deliver power.
Once a device has enumerated itself on the port then it can negotiate for up to 500ma from the host controller.
To measure the voltage then you either touch the meter probes onto the stripped ends of the wires or if your cable end is a large connector then touch the probes without shorting them together onto pins 1 and 4 of the connector.
Features enabled to measure usb devices at no load and over load condition also for usb terminals testing.
Analog voltage output device with 4 high drive channels 8 digital i o and 1 counter input.
Thermocouple rtd thermistor semiconductor 24 bit resolution 2 s s ch sample rate 8 digital i o and 1 counter input.
