8233D PRO-EN
12
Note:
●
For safety’s sake, the measuring time for high current should be
≤
10
second for each measurement and the interval time between two
measurement should be greater than 5 minutes.
●
When current measurement has been completed, disconnect the
connection between the testing lead and the circuit under test.
5-7.Capacitance measurement
Note:
To avoid damage to the instrument or device under test to measure
capacitance previously, should cut off all power of the circuit to be measured
and all high-voltage capacitors discharge. DC voltage function determines the
capacitor has been discharged.
Capacitance is component's ability to store charge.
The unit of capacitance is ferrari (F). Most of the value of the capacitor is in the
law (nF) between micro method (F). Instrument is through the capacitor
charging (with a known current and time), then measure the voltage, then
calculate capacitance value. 1000 mu F measuring takes about eight seconds,
the faster the smaller capacitance measurement. Instrument test more than
500 mu F, there will be a slight jumps phenomenon.
Measurement of capacitance
①
The rotary switch to gear.
②
Respectively connects black test pens and a red pen to COM input socket
