Measuring Frequency - Fluke 87 Series IV User Manual

Model 87 & 89 Series IV
Users Manual

Measuring Frequency

Frequency is the number of cycles a signal completes
each second. The meter measures the frequency of a
voltage or current signal by counting the number of times
the signal crosses a threshold level each second.
Figure 3-13 highlights the function selections that allow
frequency measurement.
To measure frequency, select an appropriate function,
connect the meter signal source, and press
The meter autoranges to one of four frequency ranges:
500.00 H z, 5.0000 kHz, 50.000 kHz, and 500.00 kHz.
Figure 3-14 shows a typical frequency display.
3-22
V
ac+dc
mV
dB
.
V
dB
OFF
Figure 3-13. Functions Allowing Frequency
nS
mV
C
ac+dc
VIEW MEM
CLEAR MEM
Measurement
F
A
mA
A
A
mA
ac+dc
A
ac+dc
tc021f.eps