Agilent X-Series Signal Generators SCPI Command Reference 207
Analog Modulation Commands
Frequency Modulation Subsystem–Option UNT ([:SOURce])
Frequency Modulation Subsystem–Option UNT ([:SOURce])
:FM[1]|2:EXTernal[1]|2:COUPling
Supported All Models with Option UNT
[:SOURce]:FM[1]|2:EXTernal[1]|2:COUPling AC|DC
[:SOURce]:FM[1]|2:EXTernal[1]|2:COUPling?
This command sets the coupling for the frequency modulation source through the selected external
input connector.
Use this command with the EXTernal[1]|2:DC command to remove the effects of DC and optimize the
DCFM calibration.
AC This choice only passes ac signal components.
DC This choice passes both ac and dc signal components.
*RST DC
Key Entry Ext Coupling DC AC
Remarks The command does not change the currently active source or switch the current
modulation on or off. The modulating signal may be the sum of several signals,
either internal or external sources.
:FM[1]|2:EXTernal[1]|2:IMPedance
Supported All Models with Option UNT
[:SOURce]:FM:EXTernal[1]|2:IMPedance 50|600|1000000
[:SOURce]:FM:EXTernal[1]|2:IMPedance?
This command sets the input impedance for the externally- applied FM input signal.
50 This choice selects 50 Ohm input impedance.
600 This choice selects 600 Ohm input impedance.
1000000 This choice selects 1 MOhm input impedance.
*RST 50 Ohm
:FM[1]|2:INTernal:DUAL:FUNCtion2:AMPLitude:PERCent
Supported All Models with Options UNT and 303
[:SOURce]:FM[1]|2:INTernal:DUAL:FUNCtion2:AMPLitude:PERCent <value><unit>
[:SOURce]:FM[1]|2:INTernal:DUAL:FUNCtion2:AMPLitude:PERCent?
This command sets the amplitude of tone 2 of the internal dual function generator source as a
percent of the peak analog modulation amplitude. Tone 1 of the internal dual function generator
source will make up the remaining amplitude.
Key Entry Ext Impedance 50 Ohm 600 Ohm 1 MOhm
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