3 DC Power Supply Operation
Square-wave Output
90 U3606A User’s and Service Guide
Setting the frequency
1 To set the square- wave frequency, press until the duty cycle or
pulse width value is displayed in the lower secondary display. Ensure
that the square- wave annunciator ( ) on the front panel is flashing.
(Press again if it is not.)
2 Press or to step through the available frequencies. (There are 27
frequencies choose from.)
3 Press again or Shift > Save to save the changes.
Table 3 - 1 Available frequencies for square-wave output
Frequency (Hz)
0.5, 2, 5, 6, 10, 15, 25, 30, 40, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 480, 600, 800, 1200,
1600, 2400, 4800
Square-wave frequency
Ensure that either the
duty cycle or pulse width
value is displayed here
• Pressing again will save the changes, and display the next
square-wave parameter. (While still in the edit mode.)
• Pressing Shift > Save will save the changes, and exit the edit mode.
• Changing the square-wave frequency value will affect the square-wave
duty cycle and pulse width values as they are inter-related.
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