Instructions
RIGOL  Chapter 2 Command Systems for GPSA and RTSA Modes 
2-144  RSA3000E Programming Guide 
Remarks 
This command is only available for RTSA mode. 
[:SENSe]:INITiate:FCAPture 
Syntax 
[:SENSe]:INITiate:FCAPture 
Description 
Initiates the IQ capture. 
Remarks 
This command is only available for RTSA mode. 
[:SENSe]:FREQuency:CENTer 
Syntax   
[:SENSe]:FREQuency:CENTer <freq>   
[:SENSe]:FREQuency:CENTer? 
Description
Sets the center frequency.  
Queries the center frequency.
Parameter 
Name 
Type 
Range 
Default 
<freq> 
Consecutive Real 
Number 
GPSA mode 
0 Hz to Fmax
[1]
 (zero span) 
5 Hz to (Fmax - 5 Hz) (non-zero span) 
Fmax/2 
RTSA mode 
2.5 kHz to (Fmax - 2.5 kHz) 
Note
[1]
: Fmax (maximum measurement frequency) is determined by the model of the spectrum analyzer. The 
maximum frequency of RSA3030E/RSA3030E-TG is 3 GHz, and the maximum frequency of RSA3015E/RSA3015E-TG is 
1.5 GHz. 
Return Format
The query returns the center frequency in scientific notation. The unit is Hz. 
Example
The following command sets the center frequency to 1 MHz. 
:SENSe:FREQuency:CENTer 1000000 
The following query returns 1.000000000e+06. 
:SENSe:FREQuency:CENTer? 










