RIGOL DG1000Z Series - Manual (Page 27)

Chapter 2 Command System RIGOL
DG1000Z Programming Guide 2-15
:COUPling:FREQuency:MODE
Syntax :COUPling:FREQuency:MODE {OFFSet|RATio}
:COUPling:FREQuency:MODE?
Description Set the frequency coupling mode to frequency deviation (OFFSet) or frequency ratio
(RATio).
Query the selected frequency coupling mode.
Parameter Name Type Range Default
{OFFSet|RATio} Discrete OFFSet|RATio RATio
Explanation  Frequency deviation mode: the frequencies of CH1 and CH2 have certain
deviation relation. The parameter relations are F
CH2
=F
CH1
+F
Dev
(the reference
source is CH1); F
CH1
=F
CH2
-F
Dev
(the reference source is CH2). Wherein, F
CH1
is the
frequency of CH1, F
CH2
is the frequency of CH2 and F
Dev
is the frequency
deviation.
 Frequency ratio mode: the frequencies of CH1 and CH2 have certain ratio
relation. The parameter relations are F
CH2
=F
CH1
*F
Ratio
(the reference source is
CH1); F
CH1
=F
CH2
/F
Ratio
(the reference source is CH2). Wherein, F
CH1
is the
frequency of CH1, F
CH2
is the frequency of CH2 and F
Ratio
is the frequency ratio.
 If the frequency of CH1 or CH2 exceeds the frequency upper limit or lower limit of
the channel after the channel coupling, the instrument will automatically adjust
the frequency upper limit or lower limit of the other channel to avoid parameter
overrange.
 Select the desired frequency coupling mode and set the corresponding frequency
deviation ( :COUPling:FREQuency:DEViation ) or frequency ratio
( :COUPling:FREQuency:RATio ) before enabling the frequency coupling function
( :COUPling:FREQuency[:STATe] ). You cannot set the frequency coupling mode
and frequency deviation/ratio after the frequency coupling function is enabled.
 You can also send the [:SOURce[<n>]]:FREQuency:COUPle:MODE command to
set or query the frequency couplimg mode of the specified channel.
Return Format The query returns OFFSET or RATIO.
Example :COUP:FREQ:MODE OFFS /*Set the frequency coupling mode to frequency
deviation*/
:COUP:FREQ:MODE? /*Query the selected frequency coupling mode and the
query returns OFFSET*/
Related
Commands
:COUPling:FREQuency:DEViation
:COUPling:FREQuency:RATio
:COUPling:FREQuency[:STATe]
[:SOURce[<n>]]:FREQuency:COUPle:MODE