103
Chapter 3 Features and Functions
Output Configuration
3
Duty Cycle (Square Waves)
The duty cycle of a square wave represents the fraction of time per cycle
that the square wave is at a high level (assuming that the waveform is
not inverted).
(See Pulse Waveforms, on page 110 for information about duty cycle for
pulse waveforms.)
• Duty Cycle: 0.01% to 99.99% , at low frequencies; range is reduced
at higher output frequency.
• The duty cycle is stored in volatile memory; the default value is 50%.
• The duty cycle setting is remembered when you change from square
wave to another function. The duty cycle setting does not apply to a
square waveform used as the modulating waveform for AM, FM, PM
or PWM. A 50% duty cycle is always used for a modulating square
waveform. The duty cycle setting applies only to a square waveform
carrier.
• Front-Panel Operation: After selecting the square wave function,
press the Duty Cycle softkey. Then use the knob or numeric keypad
to enter the desired duty cycle. If you use the numeric keypad, press
Percent to complete the entry.
• Remote Interface Operation:
FUNCtion:SQUare:DCYCle {<percent>|MINimum|MAXimum}
The APPLy command automatically sets the duty cycle to 50%.
20% Duty Cycle 80% Duty Cycle
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