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Chapter 1 309
GPIB Command Dictionary
RFGenerator subsystem
:CHANnel <string>
:CHANnel?
These commands set/query the RF channel number. Channel tuning
must be enabled (CONF:RFD ‘Chan’). You must also choose the correct
channel standard (CONF:RFCS <string>).
Syntax
RFG:CHAN <integer>
RFG:CHAN?
Screen/Field Equivalent
RFG:CHAN controls the upper subfield of the RF Channel field on the
RF GENERATOR screen when the RF Display field on the
INSTRUMENT CONFIGURE screen is set to Chan.
:FM:COUPling <string>
:FM:COUPling?
These commands set/query the coupling between the MODULATION
IN port and the RF generator’s FM modulator.
Syntax
RFG:FM:COUP ‘AC’
‘DC’
RFG:FM:COUP?
Screen/field equivalent
RFG:FM:COUP controls the FM Coupling field on the RF
GENERATOR screen.
:FM:DCZero
This command zeroes any dc bias that exists when the
RFG:FM:COUP ‘DC’ command is used and FM is turned on using the
AFG1:DEST ‘FM’ and AFG1:FM:STAT ON commands (AFG2 could be
used instead of AFG1).
Syntax
RFG:FM:DCZ
Screen/field equivalent
RFG:FM:DCZ controls the DC FM Zero field on the RF GENERATOR
screen.