Anritsu MS9740B - Measuring Spectrum Power by Integration

Chapter 4 Changing Measurement Conditions
4-20
4.5.6 Measuring Spectrum Power by Integration
1. Press
f6 Spectrum Power
.
2. The integrated power of the spectrum data on the screen and the
center wavelength
λ
c obtained from the weighted average of the level
are displayed.
Figure 4.5.6-1 Spectrum Power Example
The center wavelength (
λ
c) and power (p) are calculated by the following
formula.
AnA
A
nAnAA
Ai
iAi
c
n
i
n
i
+++
+++
==
∑
∑
=
=
......21
.....2211
1
1
λλλ
λ
λ
esActR
Ai
P
n
i
∑
=
×∆×
=
1
λα
Ai: Level of ith measurement point in W units
λ
i: Wavelength of ith measurement point
Δ
λ
: Measurement point wavelength interval
ActRes: Actual resolution
n: Sampling points
α: Equipment dependent power correction coefficient
Analysis result display field