IFR 2026

REMOTE OPERATION
46882/439 5-17
Phase modulation (source-specific)
PM or PM1 or PM2
Set Phase Modulation Deviation (short form)
:DEVN
Set Phase Modulation Deviation
:INC
Set Phase Modulation step size
Data type :
Decimal Numeric Program Data
Allowed suffices :
RAD
Default suffix :
RAD
:<src>
Select modulation source where <src> is any one of: INT, EXTAC, EXTALC,
or EXTDC
:ON
Turn PM ON (locally)
:OFF
Turn PM OFF (locally)
:UP
Go UP one step
:DN
Go DOWN one step
:RETN
Return to original setting
:XFER
Transfer current value to be the new setting
Data type :
None
Allowed suffices :
None
Default suffix :
None
Examples:
PM:DEVN 2.38RAD;INT;ON
PM1:DEVN 1.5RAD;INC 0.1RAD;EXTAC
:MODF
Set PM modulation oscillator frequency (short form)
:VALUE
Set PM modulation oscillator frequency
:INC
Set PM modulation oscillator frequency step size
Data type :
Decimal Numeric Program Data
Allowed suffices :
Any one of: GHZ, MHZ, KHZ or HZ
Default suffix :
HZ
:UP
Go UP one step
:DN
Go DOWN one step
:RETN
Return to original setting
:XFER
Transfer current value to be the new setting
:SIN
Select sinusoidal waveform
:TRI
Select triangle waveform
:SQR
Select square waveform
Data type :
None
Allowed suffices :
None
Default suffix :
None
:PHASE
Set phase offset of modulation oscillator relative to current phase
Examples:
PM1:MODF:VALUE 10.5KHZ;SQR
PM2:MODF:PHASE 2.0DEG
PM? or PM1? or PM2?
Prepares message containing information on Phase Modulation setting in one
of the following formats:
:PM:DEVN <nr2>;<src>;<status>;INC <nr2>
:PM1:DEVN <nr2>;<src>;<status>;INC <nr2>
:PM2:DEVN <nr2>;<src>;<status>;INC <nr2>
where <src> is a program mnemonic representing the source of the
modulation signal and <status> is a program mnemonic
indicating whether the phase modulation is locally ON or
OFF
Example:
:PM2:DEVN 2.30;INT;OFF;INC 0.05