Keysight 81150A - FSK Source

Features and Functions
81150A and 81160A User’s Guide 213
3.10.6 FSK Source
Introduction
 FSK source can be Internal, External, or other channel. The default is
Internal.
 When the Internal source is selected, the rate at which the output
frequency “shifts” between the carrier frequency and hop frequency
is determined by the FSK rate specified.
 When the External source is selected, the output frequency is
determined by the signal level on the Modulation In connector. When
a logic low level is present, the carrier frequency is output. When a
logic high level is present, the hop frequency is output.
 The maximum external FSK rate is 10 MHz.
 When “other” channel is selected, then a DAC value below 0 will
output the carrier frequency, a DAC value  0 will output the hop
frequency.
Front-Panel
Operation
After enabling FSK, press the FSK Source softkey and select from Internal,
Channel, or External.
Remote Interface
Operation
:FSKey[1|2]:SOURce{INTernal[1]|INTernal2|
EXTernal}