Features and Functions 3
Agilent U1251A/U1252A User’s and Service Guide 75
Square Wave Output (for U1252A)
The square wave output is a unique function for many
applications, such as PWM (Pulse Width Modulation) output,
adjustable voltage control, and synchronic clock (baud rate
generator). You can also use this function to check and cali-
brate flow- meter displays, counters, tachometers, oscillo-
scopes, frequency converter, frequency transmitter 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 (ms) 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
Pressing is the same as pressing .
Press
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