Agilent Technologies ESA-E Series Programmer's Manual page 315

Language Reference
TRACe Subsyste m
Determines if the signals in the : TRACe :MATH : PEAR : DATA? query ar e
sorted by frequency or amplitude .
Amplitude sorts the identified peaks by descending amplitude .
Frequency sorts the identified peaks by increasing frequency.
Smooth Trace Dat a
:TRACe :MATH :SMOoth <trace>
Smooths the trace according to the number of points specified i n
:TRACe : MATH : SMOoth : POINts . There is no equivalent front pane l
function .
Remarks: Traces are : TRACE 1
1
2
1
3, and RAWTRAC E
commands.
The purpose of this function is to perform a spatial
video averaging as compared to the temporal versio n
supplied by the video-average command
[ : SENSe ] : AVERage : TYPE LPOWer. The functions of
: TRACe :MATH : SMOoth <trace> and
[ : SENSe] : AVERage : TYPE LPOWer are not
interchangeable.
Each point value is replaced with the average of the
values of the selected number of points, with half of
those points located on each side of any particular point
(when possible) . Refer to Figure 5-1 . This figure
illustrates a 401 point trace with a smoothing numbe r
of 31 . Think of the trace points as "buckets" of data . To
smooth (arbitrary) point 273, the analyzer average s
buckets 258 through 287 and applies that value to point
273.
Chapter 5 5-155