User manual

RIGOL Chapter 2 Command System
2-138 RSA3000 Programming Guide
[: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)
50 Hz to (Fmax - 50 Hz) (non-zero span)
[2]
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 RSA3030/RSA3030-TG is 3 GHz, and the maximum frequency of RSA3045/RSA3045-TG is 4.5
GHz.
Note
[2]
: In non-zero span, if the option RSA3030-BW1 is installed, its range is from 5 Hz to (Fmax – 5 Hz).
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?
[:SENSe]:FREQuency:CENTer:STEP:AUTO
Syntax
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF|ON|0|1
[:SENSe]:FREQuency:CENTer:STEP:AUTO?
Description
Enables or disables the auto setting mode of the CF step.
Queries the status of the auto setting mode of the CF step.
Parameter
Name
Type
Range
Default
——
Bool
OFF|ON|0|1
ON|1
Return Format
The query returns 0 or 1.
Example
The following command enables the auto setting mode of the CF step.
:SENSe:FREQuency:CENTer:STEP:AUTO ON or :SENSe:FREQuency:CENTer:STEP:AUTO 1
The following query returns 1.
:SENSe:FREQuency:CENTer:STEP:AUTO?