5500A
Operator Manual
7-16
7-15. Capacitance Accuracy
The Capacitance Accuracy test verifies the accuracy of the synthesized capacitance
output at the 5500A Calibrator front panel AUX terminals. Use the Fluke 6304C LCR
Meter with PM9540/BAN output cable. This cable eliminates the need for a four-wire
connection.
Note
Make sure there are no other connections to the 5500A, especially the
SCOPE BNC. Connecting any additional grounds to the 5500A can cause
erroneous capacitance outputs. To overcome a noise problem, increase the
meter’s signal current by increasing either the frequency (which will
decrease the capacitance) or the voltage level.
Nominal value (nF)
LCR Stimulus
Frequency (Hz)
Measured
Value (F)
Deviation
%
90-Day Spec.
(%)
0.35 nF 1 kHz 3.23%
0.48 nF 1 kHz 2.46%
0.6 nF 1 kHz 2.05%
1 nF 1 kHz 1.38%
1.2 nF 1 kHz 1.22%
3 nF 1 kHz 0.71%
3.3 nF 1 kHz 0.68%
10.9 nF 1 kHz 0.47%
12 nF 1 kHz 1.03%
30 nF 1 kHz 0.52%
33 nF 1 kHz 0.49%
109 nF 1 kHz 0.28%
120 nF 1 kHz 0.44%
300 nF 1 kHz 0.29%
330 nF 100 Hz 0.49%
1.09 µF 100 Hz 0.28%
1.2 µF 100 Hz 0.51%
3 µF 100 Hz 0.36%
3.3 µF 100 Hz 0.56%
10.9 µF 100 Hz 0.35%
12 µF 100 Hz 0.55%
30 µF 100 Hz 0.40%
33 µF 100 Hz 0.68%
109 µF 100 Hz 0.47%
120 µF 100 Hz 0.75%
300 µF 100 Hz 0.60%
330 µF 50 Hz 1.09%
1.1 mF 50 Hz 1.03%
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