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Center Ref.rel
Spect. Pos [nm]
All spectral positions in this columns category are displayed in nm, independent of the
value of the Setup/Display/Unit parameter. The available result table columns corre-
spond to Spect. Pos [Disp.Unit]
Center
Spacing
Offset
Center Ref
Center rel
Center Ref.rel
Channel power
Power Peak
Power Integr.
NOTE
The power integration method is used to avoid wrong channel power mea-
surement with modulated signals having a larger bandwidth than the optical
filter resolution bandwidth of the OSA.
the difference between the reference frequency of the channel
and the reference channel
the center wavelength of the channel signal
the wavelength difference to the previous channel signal
the wavelength difference to the corresponding grid line (only
available if the parameter Analysis/Channel detection/Mode is
set to Grid)
depends on the parameter Analysis/Channel detection/Mode: if
it is set to Grid: the grid wavelength else the center wavelength
of the channel signal
the difference between the center wavelength of the channel
signal and the reference channel (set by the softkey Set Ref
Channel on the result page)
the difference between the reference wavelength of the channel
and the reference channel
the peak power of the channel signal
the entire power of the channel signal
This parameter indicates the calculated total channel power
level from the detected channels, achieved by mathematical
power integration over ± ½ min channel spacing around the
channel center frequency.(see "Min. Channel spacing" on page
178). This power level may differ from the peak power level
indicated by cursor evaluation in the graphical trace.
User Manual
Chapter 8 Optical Spectrum Measurement
WDM-Expert Software option
78000010220 Rev. 024
295
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