Anritsu MS9740B - Page 172

Chapter 5 Measurement Functions
5-22
● S.Level (Slice Level)
This sets the optical signal detection level range and detects peaks
above the lower level of the S. Level band below the Peak level as
WDM signals. Peaks b, c, d, and e in the following diagram are
detected.
Figure 5.5.2-2 WDM Analysis Target Peaks
Note:
Peak level is the sum of optical signal level and noise level.
● Wavelength
Detection Type: Detection type of Signal wavelength
Peak: Wavelength peaks
Threshold: Center wavelength analyzed Threshold
Threshold Cut Level: Detects peak as signal and level range from
maximum.
This parameter is enabled when Threshold is selected.
Threshold Cut Level is set in the range of 0.1 to 50.0.
Note:
If no wavelength is detected within the level range specified by
Threshold Cut Level, the screen center wavelength becomes the
detected wavelength.
Figure 5.5.2-3 Measurement Method for Signal Wavelength
Peak Level
Slice Level
a
b
c
d
e
When
Peak
is selected
Cut Level
Signal Wl:
Peak Wavelength
When
Threshold
is selected
Signal Wl:
Center Wavelength of Threshold Level
Threshold
Level