Test Signal:100 khz constant-current square wave(MAX Voltage < 200mv)
Meter Work Current:about 25ma
1 * ESR Meter
How to use
1.ON/OFF then ESR Meter: Hit "on/off" key to turn on. After power on, it will show six black block each line and self_test for a moment.
Long press "on/off" key to turn off. LCD will show "on/off", now release the power key and it will power down.
Use two probes connect two pins of electrolytic capacitor for seconds until it is stable (First Line is ESR, second line is the voltage of batteries). If ESR too higher than reference values, the electrolytic capacitor maybe have problem.
(tips: you can use your reference value table by many kinds of electrolytic capacitor)
3.Set offset to zero
Short the test leads together and short hit "function" key, LCD will shoe "offset..", after seconds, first line will to be zero, second line show offset number. Second line is absolute value, the value shouldn't more than 0x10000. If it is more or lesser, LCD show "OF Fail".
Short hit "on/off" key, will turn on or turn off backlight.
5.Auto Power down
To save power, it will auto power down after 3 minutes. When voltage of batteries is near by 2,00, LCD will show "low bat" and flashing at second time. After lower than 2.00v, it will power down.