Instructions

RIGOL Chapter 2 Command Systems for GPSA and RTSA Modes
2-146 RSA3000E Programming Guide
[:SENSe]:FREQuency:OFFSet
Syntax
[:SENSe]:FREQuency:OFFSet <freq>
[:SENSe]:FREQuency:OFFSet?
Description
Sets the frequency offset.
Queries the frequency offset.
Parameter
Name
Type
Range
Default
<freq>
Consecutive Real Number
-500 GHz to 500 GHz
0 Hz
Remarks
The change of this parameter only changes the display values of the center frequency, start frequency, and
stop frequency; but does not affect any hardware settings of the spectrum analyzer.
Return Format
The query returns the frequency offset in scientific notation. The unit is Hz.
Example
The following command sets the frequency offset to 1 MHz.
:SENSe:FREQuency:OFFSet 1000000
The following query returns 1.000000000e+06.
:SENSe:FREQuency:OFFSet?
[:SENSe]:FREQuency:SPAN
Syntax
[:SENSe]:FREQuency:SPAN <freq>
[:SENSe]:FREQuency:SPAN?
Description
Sets the span.
Queries the span.
Parameter
Name
Type
Range
Default
<freq> Consecutive Real Number
GPSA mode
[1]
: 0 Hz, 10 Hz to Fmax
GPSA mode: Fmaxz
RTSA mode: 5 kHz to 10 MHz
RTSAmode: 10 MHz
Note
[1]
: When the span of the analyzer is set to 0 Hz, the spectrum analyzer enters the zero span mode.
Remarks
The span can be set to 0 only in GPSA mode. After the span is set to 0, the instrument enters the zero span
mode; the X axis changes from frequency to time, and the instrument only displays signals whose
frequency equals to the center frequency.
Return Format
The query returns the span in scientific notation. Its unit is Hz.
Example
The following command sets the span to 20 MHz.