Instructions

Chapter 2 Command System RIGOL
RSA5000 Programming Guide 2-141
[: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: 0 Hz, 10 Hz to Fmax
RTSA mode: 5 kHz to 25 MHz
5 kHz to 40 MHz (Option RSA5000-B40)
GPSA mode: Fmax
RTSA mode: 25 MHz
40 MHz (Option RSA5000-B40)
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.
:SENSe:FREQuency:SPAN 20000000
The following query returns 2.000000000e+07.
:SENSe:FREQuency:SPAN?
[:SENSe]:FREQuency:SPAN:BANDwidth[:RESolution]:RATio
Syntax
[:SENSe]:FREQuency:SPAN:BANDwidth[:RESolution]:RATio <integer>
[:SENSe]:FREQuency:SPAN:BANDwidth[:RESolution]:RATio?
Description
Sets the ratio of span to RBW.
Queries the ratio of span to RBW.
Parameter
Name
Type
Range
Default
<integer>
Discrete
2 to 10,000
106
Remarks
This command is valid for the swept SA measurement in GPSA mode.
Return Format
The query returns the span/RBW ratio in integer.
Example
The following command sets the span/RBW ratio to 100.
:SENSe:FREQuency:SPAN:BANDwidth:RESolution:RATio 100