Anritsu MS9740B - Page 242

Chapter 5 Measurement Functions
5-92
Figure 5.9.3-3 Measurement Method for Signal Wavelength
● Threshold Wavelength
Set two threshold levels (
Cut Level A
and
Cut Level B
) for obtaining
the signal wavelength (
n dB Wl) by using the n dB Threshold method.
•
BW/Pass Band
Analysis Type: Analysis method for the bandwidth (
x dB BW)
centered around the signal wavelength
BW: Spectrum width at the level that is lower than
the peak level by the amount of the value
specified by Cut Level A and Cut Level B
Pass Band: Spectrum width at the level that is lower than
the dip point in the Pass-Band Span range
centered around the signal wavelength, by the
amount of the value specified by Cut Level A and
Cut Level B
Cut Level
CH Wl:
Peak Wavelength
When
Threshold
is selected
CH Wl:
Center Wavelength at the
Threshold Level
Threshold
Level
When
RMS
is selected
CH Wl:
Calculated Wavelength
Cut Level
Calculation
Range
When
Peak
is selected