BNC 1201 - 6 1/2 Digit Digital Multimeter - Manual (Page 39)

40
Figure 3-8
Figure 3-9
3.4 Frequency & Period Measurements
1201 uses an on-board counter with 25MHz to measure the frequency
(period). The measurement band is from 3Hz to 300kHz (or 333 ms to
3.3 μs) and the measurement voltages range from 100mV to 750 V in
AC. The default for “RANGE” is auto-range.
Warning! The maximum input allowed is 1000V. Applying excess
voltage may damage your meter.
How to measure frequency and period
① Selects input signal connections on front or rear panel.
② Connect the test leads to the terminals as shown in Figure 3-2.