User manual

RIGOL Chapter 2 Command System
2-102 MSO7000/DS7000 Programming Guide
:MATH<n>:FFT:SEARch:NUM
Syntax
:MATH<n>:FFT:SEARch:NUM <num>
:MATH<n>:FFT:SEARch:NUM?
Description
Sets or queries the maximum number of the FFT peak search.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2|3|4}
——
<num>
Integer
1 to 15
5
Return
Format
The query returns an integer ranging from 1 to 15.
Example
:MATH1:FFT:SEARch:NUM 10 /*Sets the maximum number of the FFT peak search to
10.*/
:MATH1:FFT:SEARch:NUM? /*The query returns 10.*/
:MATH<n>:FFT:SEARch:THReshold
Syntax
:MATH<n>:FFT:SEARch:THReshold <thres>
:MATH<n>:FFT:SEARch:THReshold?
Description
Sets or queries the threshold of the FFT peak search.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2|3|4}
——
<thres>
Real
Related to the vertical scale and vertical offset of
FFT operation
5.5 dB
Return
Format
The query returns the threshold in scientific notation.
Example
:MATH1:FFT:SEARch:THReshold 0.5 /*Sets the threshold of the FFT peak search to 500
mdB.*/
:MATH1:FFT:SEARch:THReshold? /*The query returns 5.000000E-1.*/
:MATH<n>:FFT:SEARch:EXCursion
Syntax
:MATH<n>:FFT:SEARch:EXCursion <excur>
:MATH<n>:FFT:SEARch:EXCursion?
Description
Sets or queries the excursion of the FFT peak search.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2|3|4}
——
<excur>
Real
0 to (8xVerticalScale)
1.8 dB
Remarks
VerticalScale indicates the vertical scale of the current source.
Return
Format
The query returns the excursion of the FFT peak search in scientific notation.
Example
:MATH1:FFT:SEARch:EXCursion 0.5 /*Sets the excursion of the FFT peak search to 500
mdB.*/
:MATH1:FFT:SEARch:EXCursion? /*The query returns 5.000000E-1.*/