42
Agilent U1251A/U1252A User’s and Service Guide
2
Making
Measurements
Frequency Counter
1
Set the rotary switch to
.
2
Push
to select the Frequency counter (Hz) function.
“- 1- “ on the secondary display means the input signal
frequency is divided by 1. This accommodates for higher
frequency range of up to 2 MHz.
3
Connect the red and black test leads to input terminals
V
and
COM
respectively.
4
Probe the test points and read the display.
5
If the reading is unstable or zero, push
to select
division of input signal frequency by 100. This
accommodates for higher frequency range of up to 20
MHz.
6
The signal is out of specification if the reading is still
unstable after Step 5.
While the secondary display shows “- 1- “, you may scroll
through the pulse width (ms), duty cycle (%) and frequency
(Hz) measurements by pushing
.
WA RN I N G
Use the frequency counter for low voltage application. Never use the
frequency counter on line power system.
Hz
Summary of Contents for U1251A
Page 34: ...34 Agilent U1251A U1252A User s and Service Guide 1 Getting Started Tutorial...
Page 116: ...116 Agilent U1251A U1252A User s and Service Guide 5 Maintenance...
Page 120: ...120 Agilent U1251A U1252A User s and Service Guide 6 Accessories...
Page 156: ...156 Agilent U1251A U1252A User s and Service Guide 8 Specifications...
