88
Chapter 3 Features and Functions
Phase Modulation (PM)
3
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.
•
Front-Panel Operation
: After enabling PM, press the
Source
softkey.
•
Remote Interface Operation
:
PM:SOURce {INTernal|EXTernal}
Modulation
In
+5 V
0V
-5 V
To Next Page
Loading...
Need help?
General
