Instructions

RIGOL Chapter 2 Command Systems for GPSA and RTSA Modes
2-4 RSA3000E Programming Guide
:CALCulate:BANDwidth|BWIDth:NDB
Syntax
:CALCulate:BANDwidth|BWIDth:NDB <rel_ampl>
:CALCulate:BANDwidth|BWIDth:NDB?
Description
Sets the N value in N dB BW measurement.
Queries the N value in N dB BW measurement.
Parameter
Name
Type
Range
Default
<rel_ampl>
Consecutive Real Number
-140 dB to -0.01 dB
-3.01 dB
Remarks
This command is invalid for the PvT measurement mode in RTSA.
Return Format
The query returns the N value in scientific notation.
Example
The following command sets N to -4.
:CALCulate:BANDwidth:NDB -4
:CALCulate:BWIDth:NDB -4
The following query returns -4.000000e+00.
:CALCulate:BANDwidth:NDB?
:CALCulate:BWIDth:NDB?
:CALCulate:BANDwidth|BWIDth:RESult?
Syntax
:CALCulate:BANDwidth|BWIDth:RESult?
Description
Queries the measurement results of the N dB band, and its unit is Hz.
Remarks
This command is invalid for the PvT measurement mode in RTSA.
Return Format
The query returns the bandwidth value in scientific notation (with Hz as the unit).
If the two points which are located at both sides of the current marker with N dB fall or rise in its peak
amplitude are not found, the query returns -1.000000000e+02.