Rigol DG800 Series - Page 82

RIGOL Chapter 2 Command System
2-68 DG800 Programming Guide
 You can also send the :COUPling[<n>]:FREQuency:MODE command to set and query the frequency
coupling mode.
Return Format
The query returns OFFS or RAT.
Example
:FREQ:COUP:MODE OFFS /*Sets the frequency coupling mode of CH1 to Frequency Deviation.*/
:FREQ:COUP:MODE? /*Queries the frequency coupling mode and the query returns OFFS.*/
[:SOURce[<n>]]:FREQuency:COUPle:OFFSet
Syntax
[:SOURce[<n>]]:FREQuency:COUPle:OFFSet <frequency>
[:SOURce[<n>]]:FREQuency:COUPle:OFFSet?
Description
Sets the frequency deviation in the frequency coupling.
Queries the frequency deviation in the frequency coupling.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
<frequency>
Real
-99.999 999 999 9 MHz to 99.999 999 999 9 MHz
0
Remarks
 Select the desired frequency coupling mode (
[:SOURce[<n>]]:FREQuency:COUPle:MODE) and set the
corresponding frequency deviation or frequency ratio (
[:SOURce[<n>]]:FREQuency:COUPle:RATio)
before enabling the frequency coupling function (
[:SOURce[<n>]]:FREQuency:COUPle[:STATe]). You
cannot set the frequency coupling mode and frequency deviation/ratio after the frequency coupling
function is enabled.
 When the frequency coupling function is disabled, if the current frequency coupling mode is frequency
deviation, sending this command can set the frequency deviation; if the current frequency coupling
mode is frequency ratio, sending this command can set the frequency coupling mode to frequency
deviation and set the frequency deviation.
 You can also send the
:COUPling[<n>]:FREQuency:DEViation command to set and query the
frequency deviation in the frequency coupling of the specified channel.
Return Format
The query returns the frequency deviation in scientific notation, with 7 effective digits. For example,
1.000000E+02 (the frequency deviation in the frequency coupling is 100 Hz).
Example
:FREQ:COUP:OFFS 100 /*Sets the frequency deviation in the frequency coupling to 100 Hz.*/
:COUP1:FREQ:DEV? /*Queries the frequency deviation in the frequency coupling and the query
returns 1.000000E+02.*/
[:SOURce[<n>]]:FREQuency:COUPle:RATio
Syntax
[:SOURce[<n>]]:FREQuency:COUPle:RATio <ratio>
[:SOURce[<n>]]:FREQuency:COUPle:RATio?
Description
Sets the frequency ratio in the frequency coupling.