Functions and Features 3
Keysight U1251B and U1252B User’s and Service Guide 95
Square Wave Output (for U1252B)
The square wave output function can be used to generate a PWM (pulse width
modulation) output or provide a synchronous clock source (baud rate generator).
You can also use this function to check and calibrate flow-meter displays,
counters, tachometers, oscilloscopes, frequency converters, frequency
transmitters, and other frequency input devices.
1 Turn the rotary switch to position. The default display setting is 600 Hz
on the secondary display and 50% duty cycle on the primary display.
2 Press or to scroll through the available frequencies (choose from the
available 28 frequencies):
3 Press to select the duty cycle (%) on the primary display.
4 Press or to adjust the duty cycle. Duty cycle can be set for 256 steps
and each step is 0.390625%. The display only indicates the best resolution
with 0.001%.
Frequency (Hz)
0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 480, 600, 800, 1200, 1600, 2400, 4800
NOTE
Pressing is the same as pressing .
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