Chapter 2 Command System RIGOL
DG800 Programming Guide 2-109
modulated waveform.
When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
If the sweep function (
[:SOURce[<n>]]:SWEep:STATe) or burst function
(
[:SOURce[<n>]]:BURSt[:STATe]) is currently enabled, it will be disabled automatically when the
modulation function is enabled.
If the harmonic function is currently enabled (
[:SOURce[<n>]]:HARMonic[:STATe]), the modulation
function cannot be enabled (i.g. the harmonic cannot be modulated).
Return Format
The query returns ON or OFF.
Example
:SOUR1:FSK:STAT ON /*Enables the FSK modulation function of CH1.*/
:SOUR1:FSK:STAT? /*Queries the on/off status of the FSK modulation function of CH1 and the query
returns ON.*/
:SOURce[:MOD]:PM
Command List:
[:SOURce[<n>]][:MOD]:PM[:DEViation]
[:SOURce[<n>]][:MOD]:PM:INTernal:FREQuency
[:SOURce[<n>]][:MOD]:PM:INTernal:FUNCtion
[:SOURce[<n>]][:MOD]:PM:SOURce
[:SOURce[<n>]][:MOD]:PM:STATe
[:SOURce[<n>]][:MOD]:PM[:DEViation]
Syntax
[:SOURce[<n>]][:MOD]:PM[:DEViation] {<deviation>|MINimum|MAXimum}
[:SOURce[<n>]][:MOD]:PM[:DEViation]? [MINimum|MAXimum]
Description
Sets the PM phase deviation of the specified channel.
Queries the PM phase deviation of the specified channel.
Parameter
Remarks
When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
Phase deviation indicates the deviation of the modulating waveform phase from the carrier waveform
phase.
When the external modulation source (
[:SOURce[<n>]][:MOD]:PM:SOURce) is selected, the phase
deviation is controlled by the ±5 V signal level on the rear-panel [Sync/Ext Mod/Trig/FSK]
connector. For example, if the phase deviation is set to 180°, +5 V signal level corresponds to a 180º
phase variation. The lower external signal levels produce less deviation.
Return Format
The query returns the PM phase deviation in scientific notation, with 7 effective digits. For example,
5.000000E+01 (the PM phase deviation is 50°).
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