Fluke 189 - Manual (Page 58)

Model 187 & 189
Users Manual
3-22
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
N .
The meter autoranges to one of four frequency ranges:
500.00 Hz, 5.0000 kHz, 50.000 kHz, and 999.99 kHz.
Figure 3-14 shows a typical frequency display.
dB
dB
ac+dc
ac+dc
ac+dc
ac+dc
F
nS
CLEAR MEM
V
mA
A
mV
V
mV
OFF
VIEW MEM
C
A
A
mA
A
tc021f.eps
Figure 3-13. Functions Allowing Frequency
Measurement