Phase Deviation - Agilent Technologies 33220A User Manual

3
Chapter 3 Features and Functions
Phase Modulation (PM)

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 PM, press the Phase Dev
softkey. Then use the knob or numeric keypad to enter the desired
deviation.
• Remote Interface Operation:
PM:DEViation {< deviation in degrees>|MINimum|MAXimum}
Modulating Source
The function generator will accept an internal or external modulation
source for PM.
• Modulating source: Internal or External. The default is Internal.
• If you select the External source, the carrier waveform is modulated
with an external waveform. The phase deviation is controlled by the
±5V signal level present on the rear-panel Modulation In connector.
For example, if you have set the deviation to 180 degrees, then a +5V
signal level corresponds to a 180 degree phase shift. Lower external
signal levels produce less deviation.
Modulation
In
• Front-Panel Operation: After enabling PM, press the Source softkey.
• Remote Interface Operation:
PM:SOURce {INTernal|EXTernal}
88
+5 V
0 V
-5 V