User Manual

GMC-I Messtechnik GmbH 37
V/Hz, Ω, Temperature, and A/Hz Measurements
5.7 Capacitance Measurement
Ð Disconnect supply power from the electrical circuit of the
device to be measured, and discharge all high-voltage
capacitors.
Ð Make sure that the device under test is voltage-free.
Capacitors must always be discharged before measurement is
performed.
Interference voltages distort measurement results!
Refer to section 5.2.1 regarding testing for the absence of
voltage with the help of the direct voltage measurement.
Ð Set the rotary switch to “ ”.
Ð Connect the (discharged!) device under test to the sockets
with the measurement cables as shown.
Note

The “–” pole of polarized capacitors must be connected to
the “⊥” jack.
Resistors and semiconductor paths connected in parallel to
the capacitor distort measurement results!
Improving Accuracy by means of Zero Balancing
Cable capacitance can be eliminated in all measuring ranges by
means of zero balancing (see section 4.2). Maximum correction
amounts to 50% of the measuring range.
–+ +
0V !
!
10.38
F
+
–
+
–
μ
30 nF ... 300 μF
Measuring range: