Keysight U1253B Guía Del Usuario Y Servicios página 75

2 Making Measurements
Measuring Capacitance
Disconnect circuit power and discharge all high-voltage capacitors before
CAUTION
measuring capacitance to avoid damaging the multimeter or the device
under test. Use the DC voltage function in order to confirm that a capacitor
has fully discharged.
The U1253B true RMS OLED multimeter calculates capacitance by charging a
capacitor with a known current for a period of time, measuring the voltage and
then calculating the capacitance. The larger the capacitor, the longer the charge
time. Below are some tips for measuring capacitance:
Measuring tips:
– For measuring capacitance values greater than 10,000 F, discharge the
– For measuring small capacitance values, press
NOTE
discharging.
Set up the multimeter as shown in
positive terminal of the capacitor and the black test lead on the negative terminal
and read the display.
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capacitor first, then select a suitable range for measurement. This will speed
up the measurement time and also ensure that the correct capacitance value is
obtained.
to subtract the residual capacitance of the multimeter and leads.
means that the capacitor is charging. means that the capacitor is
Figure 2-14. Use the red test lead on the
Keysight U1253B User's and Service Guide
with the test leads open