Instructions
Chapter 4 Command System for VSA Mode  RIGOL 
RSA3000E Programming Guide  4-67 
ON|1: enables the coupling function. That is, when "Relative" is selected under X Axis Type, the frequency 
of the current mask point is the difference between the point and the current center frequency. 
If you modify the state of this parameter after the mask has been set, the frequency of the mask should 
make corresponding changes based on the state of the parameter, so as to keep the relations between the 
mask and the center frequency of the instrument unchanged. 
When on, the frequencies of the mask points are expressed as an offset from the center frequency. At this 
time, the frequencies of the mask points can be negative values. 
This command is only valid when you select FMT to be the trigger source. 
Return Format
The query returns 1 or 0. 
Example
The following command enables the coupling relationship between the frequencies of the mask points and 
the instrument's center frequency. 
:TRIGger:SEQuence:FMT:MASK:RELative:FREQuency ON 
or :TRIGger:SEQuence:FMT:MASK:RELative:FREQuency 1 
The following query returns 1. 
:TRIGger:SEQuence:FMT:MASK:RELative:FREQuency? 
:TRIGger[:SEQuence]:FMT:MASK<n>:BUILd 
Syntax 
:TRIGger[:SEQuence]:FMT:MASK<n>:BUILd   
Description 
Creates a mask according the RT trace data. 
Parameter
Name 
Type 
Range 
Default 
<n> 
Discrete 
1|2 
-- 
Remarks 
When <n> is set to 1, it indicates that the upper mask is being edited; when it is set to 2, it indicates that 
the lower mask is being edited. 
This command is only valid when you select FMT to be the trigger source. 
Example
The following command creates a upper mask. 
:TRIGger:SEQuence:FMT:MASK1:BUILd 
:TRIGger[:SEQuence]:FMT:MASK<n>:DATA 
Syntax 
:TRIGger[:SEQuence]:FMT:MASK<n>:DATA <freq>,<ampl>{,<freq>, <ampl>} 
:TRIGger[:SEQuence]:FMT:MASK<n>:DATA? 
Description 
Edits the mask parameters. 
Queries the mask parameters. 










