Anritsu MS9740B - Page 231

5.8 Measuring Optical Amplifier (Wavelength Division Multiplex)
5-81
5
Measurement Functions
The actual resolution for each signal is obtained as follows based on the
values obtained in 1. and 2.
i
i
Pp
Sp
ResolutionActual =
Figure 5.8.4-1 Integration Range for Signals in Multiple Channels
Figure 5.8.4-2 Integration Range for Only One Signal
When the Actual Resolution is Initial
This uses a value set at time of shipment.
Noise figure NF (dB) Calculation Method
When NF Select is S-ASE
The noise figure is calculated from the beat noise between the optical
signal and the ASE optical output.
)log(10
vsG
h
Pase
k
NF
∆⋅⋅
⋅
⋅=
ν
9
10)
2Re
1
2Re
1
( ⋅⋅
+
−
−
=∆ c
ss
s
realsvrealsv
ll
ν
9
10⋅=
sv
c
l
ν
Wl
1
Level
Wavelength (nm)
Auto
(Res)
Auto
(Res)
Wl
1
Wl
2
Wl
3
Level
Wavelength (nm)
Same value
Same
value
Same
value