Model 6220/6221 User’s Manual Wave Functions (6221 Only) 7-5
Return to Section 7 topics
Duty cycle
For a square wave Figure 7-2A, the duty cycle setting is the portion of the total
cycle that the wave is high relative to the period of the waveform. For a ramp
waveform Figure 7-2B, the duty cycle corresponds to the fraction of the total wave
cycle that is rising. A 50% duty cycle corresponds to a symmetric triangle wave.
The left waveform in B has a 100% duty cycle, the center waveform has 0% duty
cycle, and the right waveform has 50% duty cycle. A 0
° marker setting for ramp
waveforms corresponds to the minimum output at the start of ramp-up. For sine
and square wave, a 0
° marker setting for square and sine waves is the zero-
crossing point.
Figure 7-2
Duty cycle
Duty
Cycle
Setting
A. Square Wave Duty Cycle
100% Duty
Cycle Setting
B. Ramp Wave Duty Cycle
0% Duty
Cycle Setting
50% Duty
Cycle Setting
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