3 DC Power Supply Operation  
Square-wave Output
92 U3606A User’s and Service Guide
Setting the pulse width
1 To set the square- wave pulse width, press   until the 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 duty cycle values.
The pulse width can be stepped through 256 steps, where each step is 
1/(256 × frequency) more than the previous step. The display will 
automatically adjust to a 5 digit resolution (ranging from 9.9999 ms to 
9999.9 ms)
3 Press  again or Shift > Save to save the changes.
When all the appropriate parameters have been set, press   to generate 
the square wave.
• 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 pulse width value will affect the 
square-wave frequency and duty cycle values as they are inter-related.