1. Test the wiring
Clamp the two test clamps to both ends of the switch contact or test sample, connect the I + / U + terminal to the red test wire, connect the I- / U- terminal to the black test wire, and insert the thick wire into the terminal Connect to current connection to terminal I + / I-. Insert a thin wire spring rod into the voltage terminal U + / U-.
You need to use a dedicated low-resistance test wire in the device, tighten the current terminals and fix the test clip to reduce lead resistance and save battery power.
If the test line is in poor contact and the current does not reach the set value, the device will stop the test and issue an alarm.
2. The test product is grounded
In a live environment, it must be ensured that one end of the test product is grounded.
3. Intelligent power management
When the instrument has not been operated for a long time, it will automatically shut down to save power; the instrument has a low-power charging prompt function and an over-discharge protection function.