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Programming Commands
CALCulate Subsystem Commands
:CALCulate[1|2|3|4|5|6]:CENTermass:STATe
Turns the Center of Mass (Mean Wavelength) calculation ON. Trace A corre-
sponds to CALCulate1 and so on. Only one Center of Mass calculation may be
ON. For instance, if Center of Mass is ON for Trace A, turning Center of Mass
ON for Trace B will disable the Center of Mass calculation for Trace A. The
data is returned in either ASCII or binary form as determined by the FOR-
Mat:DATA command.
The Center of Mass of the trace points is normalized by the ratio of the trace
point spacing and the resolution bandwidth. The power and wavelength of
each trace point are used to calculate the Center of Mass. The formula used is:
Center of Mass
where:
λ
P
P
Total Power is the summation of the power at each trace point, normalized
by the ratio of the trace point spacing and the resolution bandwidth. The for-
mula used is:
Total Power
where:
P
Syntax
: C A L C u l a t e [ 1 | 2 | 3 | 4 | 5 | 6 ] : C E N Te r m a s s : S TATe O F F | O N | 0 | 1
6-30
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n
P
∑
i
=
----- -
P
o
i
=
1
is the wavelength of a single trace point
i
is the power of a single trace point
i
is total power as defined below
o
n
trace point spacing
∑
--------------------------------------------------------------
=
P
i
resolution bandwidth
i
=
1
is the power of a single trace point
i
trace point spacing
--------------------------------------------------------------
resolution bandwidth
λ
i
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