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Chapter 3 Features and Functions
Pulse Width Modulation (PWM)
3
Modulating Waveform Frequency
The waveform generator will accept an internal or external modulation
source for PWM. The external modulation input has a -3dB bandwidth of
100 kHz.
• Modulating frequency (internal source): 1 Hz to 30 MHz.
The default
is 10 Hz
.
•
Front-Panel Operation
: After enabling PM, press the
PWM Freq
softkey.
•
Remote Interface Operation
:
[SOURce[1|2]:]
PWM:INTernal:FREQuency
{<
frequency
>|MINimum|MAXimum}
Phase Deviation
The phase deviation setting represents the peak variation in phase of the
modulated waveform from the carrier waveform. The phase deviation
can be set from 0 to 360 degrees. The default is 180 degrees.
•
Front-Panel Operation
: After enabling PWM, press
Phase Dev
. Then
use the knob or numeric keypad to enter the desired deviation.
• Remote Interface Operation:
PWM:DEViation {<deviation_in_degrees>|MINimum|MAXimum}
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