RIGOL
DG900 Programming Guide
2-99
modulated waveform.
When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
If the sweep function (
) or burst function
) 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:ASK:STAT ON /*Enables the ASK modulation function of CH1.*/
:SOUR1:ASK:STAT? /*Queries the on/off status of the ASK modulation function of CH1 and the query
returns ON.*/
:SOURce[:MOD]:FM
Command List:
[:SOURce[<n>]][:MOD]:FM[:DEViation]
[:SOURce[<n>]][:MOD]:FM:INTernal:FREQuency
[:SOURce[<n>]][:MOD]:FM:INTernal:FUNCtion
[:SOURce[<n>]][:MOD]:FM:SOURce
[:SOURce[<n>]][:MOD]:FM[:DEViation]
Syntax
[:SOURce[<n>]][:MOD]:FM[:DEViation] {<deviation>|MINimum|MAXimum}
[:SOURce[<n>]][:MOD]:FM[:DEViation]? [MINimum|MAXimum]
Description
Sets the FM frequency deviation of the specified channel.
Queries the FM frequency deviation of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
<deviation>
Real
Refer to "Remarks".
1 kHz
Remarks
When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
Frequency deviation is the deviation of the modulating waveform frequency
[:SOURce[<n>]][:MOD]:FM:INTernal:FREQuency
) relative to the carrier frequency. The frequency
deviation must be smaller than or equal to the carrier frequency. The sum of frequency deviation and
carrier frequency must be smaller than or equal to the upper limit of the current carrier frequency plus
1 kHz.
If Sine is selected currently as the carrier waveform, the carrier amplitude will be limited at 2 Vpp when
the sum of the frequency deviation and the carrier frequency is greater than the frequency upper limit
of the current carrier.
When the external modulation source (
[:SOURce[<n>]][:MOD]:FM:SOURce
) is selected, the
frequency deviation is controlled by the ±5 V signal level on the rear-panel [Sync/Ext
Summary of Contents for DG952
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