Agilent Technologies U1231A Guía de usuario descargar pdf (Pagina 67)

Making Measurements 2

Measuring Capacitance

U1231A/U1232A/U1233A User’s Guide 49

Measuring Capacitance

Set up your multimeter to measure capacitance as shown in

Figure 2- 17. Probe the test points and read the display.

Figure 2-16 Capacitance display

CAUTION

To avoid possible damage to the multimeter or to the equipment under

test, disconnect circuit power and discharge all high-voltage

capacitors before measuring capacitance. Use the DC voltage function

to confirm that the capacitor is fully discharged.

NOTE

• The multimeter measures capacitance by charging the capacitor with a

known current for a known period of time, measuring the resulting

voltage, and then calculating the capacitance.

• is shown on the left of the display when the capacitor is charging,

and is shown when the capacitor is discharging.

NOTE

• To improve measurement accuracy of small value capacitors, press

with the test leads open to subtract the residual capacitance of

the multimeter and leads.

• For measuring capacitance values greater than 1000 μF, discharge the

capacitor first, then select a suitable range for measurement. This will

speed up the measurement time and also ensures that the correct

capacitance value is obtained.

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Agilent Technologies U1231A Guía de usuario Pagina 67