B&K Precision 879B - Manual - Manual (Page 83)

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example, if the capacitance of the component is to be
in the mF range, than selecting 100 Hz or 120 Hz for
test frequency would give much better results. The
results will also be obvious because if the same
component was tested with 1 kHz or 10 kHz, the
measured readings may look erroneous on the
display.
In all cases, it is best to check with the manufacturer’s
data sheet in order to determine the best test
frequency to use for measurement.
Inductance
Typically, a 1 kHz test frequency is used to measure
inductors that are used in audio and RF circuits. This
is because these components operate at higher
frequencies and require that they be measured at
higher frequencies such as 1 kHz or 10 kHz.
However, a 120 Hz test signal is used to measure
inductors that are used for applications such as filter
chokes in power supplies, in which are typically
operated at 60 Hz AC (in U.S.) with 120 Hz filter
frequencies.
In general, inductors below 2 mH should be measured
at 1 kHz frequency while inductors above 200 H
should be measured at 120 Hz.