True-rms Digital Multimeter
HiRes Mode
33
How to Determine Pulse Width
For a periodic waveform (its pattern repeats at equal time
intervals), you can find the time that the signal is high or
low as follows:
1. Measure the signal's frequency.
2. Push G a second time to measure the signal's
duty cycle. Push E to select a measurement of
the signal's positive or negative pulse, refer to
Figure 9.
3. Use this formula to find the pulse width:
Pulse Width
=
% Duty Cycle ÷ 100
(in seconds) Frequency
HiRes Mode
On the Product, push H for one second to enter the high-
resolution (HiRes) 4-1/2 digit mode. Measurements are
shown at 10x the usual resolution with a maximum
display of 19,999 counts. The HiRes mode works in all
modes but capacitance, frequency counter functions,
temperature, and the 250 μs (peak) MIN MAX modes.
To go to the 3-1/2 digit mode, push H for one second.
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