Keysight U1251B, Руководство пользователя и сервисное руководство

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Features and Functions 3
Keysight U1251B/U1252B User’s and Service Guide 69
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
N O T E
Pressing is the same as pressing .