Agilent Technologies ESA-E Series Programmer's Manual page 317

Language Reference
TRACe Subsystem
By replacing the value of each point in a trace with th e
average of the values of a number of points centered
about that point, any rapid variations in noise or
signals are smoothed into more gradual variations . It
thereby performs a function similar to reducing th e
video bandwidth without the corresponding changes in
sweep time ; as such, frequency resolution is decreased .
Also, signal peaks are reduced with large smoothing
values ; and this can cause the amplitude to appear to
be less than its actual value .
Number of Points for Smoothing
TRACe :MATE :SMOoth :POINts <integer>
TRACe :MATH :SMOoth :POINts ?
Specifies the number of points that will be smoothed i n
: TRACe : MATS : SMOoth. See that command for an explanation of ho w
smoothing is performed.
Increasing the number of points increases smoothing at the cost of
decreasing resolution. If the number of points is an even number, then
the number of points is increased by one . If the number of points . is
larger than the number of sweep points, then the number of swee p
points is used, unless the number of sweep points is even, in which cas e
the number of points will be the sweep points minus one . The number of
points smoothed is always an odd number .
Range : Integer, 3 to current number of sweep point s
Trace Math Subtract
TRACe :MATH :SUBTrac t
<destination trace>,<source tracel>,<source trace2 >
Subtracts the magnitude of the two source traces (trace 1 - trace 2) an d
places the result in the destination trace.
Destination traces are : TRACE 1
1
2
1
3, LLINE 1, LLINE2, and
RAWTRACE
Source traces are : TRACE 1
1
2
1
3, LLINE 1, LLINE2, an d
RAWTRACE
Example :
:TRAC :MATH :SUBT TRACE3,TRACE3,TRACE 2
is equivalent to : (trace 3 = trace 3 - trace 2 )
Chapter 5 5-157