Keysight U1251B Guia Del Usuario página 61

Frequency Counter
– Use the frequency counter for low voltage applications only. Never use
WARNING
– For inputs more than 30 Vpp, you are required to use frequency
Set up the multimeter to measure frequency as shown in
test points and read the display.
NOTE
– Press
– If the reading is unstable or is zero, press
– The signal is out of range if the reading is still unstable after the above step.
– While the secondary display shows "-1-", you may scroll through the pulse width (ms),
Keysight U1251B and U1252B User's and Service Guide
the frequency counter for line power system.
measurement mode available under the current or voltage measurement
instead of frequency counter.
to select the Frequency counter (Hz) function. "-1-" on the
secondary display means the input signal frequency is divided by 1. This
allows signals of up to a maximum frequency of 985 kHz to be measured.
input signal frequency by 100. This allows for a higher frequency range of up
to 20 MHz to be measured.
duty cycle (%) and frequency (Hz) measurements by pressing
Making Measurements
Figure 2-6. Probe the
to select the division of the
.
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