Keysight 81150A - Modulating Source

Appendix
206
3.9.7 Modulating Source
Introduction
The 81150A / 81160A will accept modulation from an internal or external
modulation source. In case of internal modulation, the modulation signal can
be the ‘other channel’ (2 channel instrument only) or the internal modulation
source of the modulated channel.
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 ±2.5V/5V
signal level present on the rear-panel Modulation In connector. For example,
if you have set the deviation to 180 degrees, then a +2.5V/5V signal level
corresponds to a 180 degree phase shift. Lower external signal levels
produce less deviation.

 The 81160A offers a fix ±2.5V input range. The 81150A offers a
selectable ±2.5V or ±5V input range.
0 V
+2.5 V/+5 V
-2.5 V/-5 V
Front Panel
Operation
Press and then press Modulation Type softkey to enable PM. After
enabling PM, press the PM Source softkey and select from Internal,
Channel, or External.
Remote Interface
Operation
:PM[1|2]:SOURce {INTernal[1]|INTernal2|EXTernal}