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3
Features and Functions
Width Deviation
The width deviation represents the variation in width (in seconds) in the
modulated waveform from the width of the original pulse waveform.
– Width deviation: 0 s to 500 s (see below). The default is 10 μs.
– The width deviation cannot exceed the current pulse width.
– The width deviation is also limited by the minimum pulse width (Wmin):
– The width deviation is limited by the current edge time setting.
– Front-Panel Operation: After enabling PWM, press the Wid th Dev softkey.
– Remote Interface Operation:
The pulse width and wid th deviation, and the pulse duty cycle and duty cycle
NOTE
deviation are coupled in the front panel interface. If you select Wid th for the
pulse waveform and enable PWM, the Wid th Dev softkey is available. On the
other hand, if you select Dty Cyc for the pulse waveform and enable PWM, the
Dty Cyc Dev softkey is available.
102
Width Deviation < Pulse Width – Wmin
and
Width Deviation < Period – Pulse Width – Wmin
where:
Wmin = 40 ns for period < 10 s.
Wmin = 200 ns for period > 10 s, but < 100 s.
Wmin = 2 µs for period > 100 s, but < 1000 s.
Width Deviation < Pulse Width – (1.6 × Edge Time)
and
Width Deviation < Period – Pulse Width – (1.6 × Edge Time)
Then use the knob or numeric keypad to enter the desired deviation.
PWM:DEViation {<deviation in seconds>|MINimum|MAXimum}
Keysight 33210A User's Guide
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