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4
Remote Interface Reference
– The pulse width deviation is limited by the current edge time setting.
– If you select the External modulating source (PWM:SOUR EXT command), the
The operation of the PWM:DEV command is affected by the FUNC:PULS:HOLD
NOTE
command (see
information). The FUNC:PULS:HOLD command determines whether pulse width
(the default) or pulse duty cycle values are to be held constant as the period is
varied. If the width is held, so is the width deviation. If the duty cycle is held, so
is the duty cycle deviation. If duty cycle and duty cycle deviation are being held,
width deviation values specified with the PWM:DEV command are automatically
converted to the equivalent duty cycle deviation in percent.
PWM:DEViation:DCYCle {<deviation in percent>|MINimum|MAXimum}
PWM:DEViation:DCYCle? [MINimum|MAXimum]
Set the duty cycle deviation in percent (percent of period). This value represents
the peak variation in duty cycle from the duty cycle of the underlying pulse
waveform. For example, if duty cycle is 10% and duty cycle deviation is 5%, the
duty cycle of the modulated waveform will vary from 5% to 15%. The default is 1
percent. MIN is approximately 0%. MAX is approximately 100% (limited by the
period, minimum pulse width, and edge time). The :DEV:DCYC? query returns the
duty cycle deviation in percent.
– The duty cycle deviation cannot exceed the current pulse duty cycle.
220
Width Deviation < Pulse Width – (1.6 × Edge Time)
and
Width Deviation < Period – Pulse Width – (1.6 × Edge Time)
deviation is controlled by the ±5V signal level present on the rear-panel
Modulation In connector. For example, if you have set the width deviation to
10 μs, then a +5V signal level corresponds to a 10 μs deviation. Lower external
signal levels produce less deviation, and negative signal levels produce
negative deviation.
"Pulse Configuration
Commands" on page 204 for further
Keysight 33210A User's Guide
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