Frequency Counter - Agilent Technologies U1253B User's Manual And Service Manual

2 Making Measurements

Frequency Counter

WA R N I N G
N O T E
38
• Use the frequency counter only for low voltage applications.
Never use the frequency counter on an AC power line system.
• For input more than 30 Vpp, you are required to use frequency
measurement mode available under the current or voltage
measurement instead of frequency counter.
Set up the multimeter to measure frequency as shown in
Figure 2- 6. Probe the test points and read the display.
• Press to select the Frequency Counter (
default input signal frequency is divided by 1. This allows signals of up
to a maximum frequency of 985 kHz to be measured.
• If the reading is unstable or zero, press
signal frequency by 100 (
allows for a higher frequency range of up to 20 MHz to be measured.
• The signal is out of range if the reading is still unstable after the above
step has been performed.
• Press to scroll through the pulse width (ms), duty cycle (%), and
frequency (Hz) measurements.
) function. The
to select division of input
will be shown on the display). This
U1253B User's and Service Guide