Keysight U1401B, Руководство пользователя и сервисное руководство

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2 Calibrator Output Operations
56 Keysight U1401B User’s and Service Guide
Square Wave Output
The square wave output can be used to generate a PWM (pulse width modulation)
output or provide a synchronous clock source (baud rate generator). You can also
use it to check and calibrate flow-meter displays, counters, tachometers,
oscilloscopes, frequency converters, frequency transmitters, and other frequency
input devices.
The frequency, amplitude, duty cycle, and pulse width of the square wave output
are all adjustable.
To select the square wave output function:
1 Turn the rotary switch to the position.
2 Press SHIFT to access the shifted operations of the keypad. The
annunciator will appear on the display.
– The default settings for the parameters are 150 Hz (frequency), 50.00%
(duty cycle), 3.3333 ms (pulse width), and +5 V (amplitude). See Figure 2-7 .
3 Press OUTPUT to output the square wave signal.
There are 28 frequencies to choose from (See Table 2-3 ). To change the
frequency:
1 Press SHIFT to access the shifted operations of the keypad. The
annunciator will appear on the display.
2 Press MODE to select frequency adjustment. The annunciator will appear
on the display.
3 Select the frequency by pressing or .
4 Press OUTPUT to output the signal.
Table 2-3 Available frequencies
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