Instructions

Chapter 2 Command System RIGOL
DG2000 Programming Guide 2-9
:COUPling[<n>]:AMPL:DEViation
Syntax
:COUPling[<n>]:AMPL:DEViation <deviation>
:COUPling[<n>]:AMPL:DEViation?
Description
Sets the amplitude deviation in the amplitude coupling of the specified channel.
Queries the amplitude deviation in the amplitude coupling of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
<deviation>
Real
-19.998 Vpp to 19.998 Vpp
0 Vpp
Remarks
 When [<n>] is omitted, the commands set and query the related parameters of CH1 by default.
 Select the desired amplitude coupling mode (
:COUPling[<n>]:AMPL:MODE) and set the corresponding
amplitude deviation or amplitude ratio (
:COUPling[<n>]:AMPL:RATio) before enabling the amplitude
coupling function (
:COUPling[<n>]:AMPL[:STATe]). You cannot set the amplitude coupling mode and
amplitude deviation/ratio after the amplitude coupling function is enabled.
 When the amplitude coupling function is disabled, if the current amplitude coupling mode is amplitude
deviation, sending this command can set the amplitude deviation; if the current amplitude coupling
mode is amplitude ratio, sending this command can set the amplitude coupling mode to amplitude
deviation and set the amplitude deviation.
Return Format
The query returns the amplitude deviation in scientific notation. The returned value contains 7 effective
digits, for example, 1.000000E+00 (the amplitude deviation is 1 Vpp).
Example
:COUP1:AMPL:DEV 1 /*Sets the amplitude deviation in the amplitude coupling of CH1 to 1 Vpp.*/
:COUP1:AMPL:DEV? /*Queries the amplitude deviation in the amplitude coupling of CH1 and the
query returns 1.000000E+00.*/
:COUPling[<n>]:AMPL:MODE
Syntax
:COUPling[<n>]:AMPL:MODE {OFFSet|RATio}
:COUPling[<n>]:AMPL:MODE?
Description
Sets the amplitude coupling mode of the specified channel to OFFSet (amplitude deviation) or RATio
(amplitude ratio).
Queries the selected amplitude coupling mode of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
{OFFSet|RATio}
Discrete
OFFSet|RATio
RATio
Remarks
 When [<n>] is omitted, the commands set and query the related parameters of CH1 by default.
 Amplitude deviation mode: the amplitudes of CH1 and CH2 have a certain deviation relation. The
parameter relations are A
CH2
=A
CH1
+A
Dev
(the reference source is CH1); A
CH1
=A
CH2
-A
Dev
(the reference
source is CH2). Wherein, A
CH1
is the amplitude of CH1, A
CH2
is the amplitude of CH2 and A
Dev
is the set