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Graphical display of optical power spectrum
A graphical display of optical power versus wavelength
is shown from the start wavelength value to the stop
wavelength value. The start wavelength value is shown
in the upper-left corner of the graphical display, and the
stop wavelength value is shown in the upper-right cor-
ner of the graphical display. The power scale is a fixed
dB scale, with +10 dBm at the display top and –53 dBm
at the display bottom. The power scale is not affected
by the Power Offset value. In most cases, the noise floor
will be visible if the total input power is greater than
about –5 dBm.
The WDM channel analyzer graphical display.
The Peak Threshold value is displayed as a dotted line.
All peaks above this dotted line are displayed. All peaks
below this line are not displayed. Adjust the Peak
Threshold value with the Setup key, and the THRSHLD
softkey.
The wavelength limit start and stop wavelength values
are used for the graphical display even if the wave-
length limit function is off.
The graphical display cannot be printed.
To see the graphical display
1 Press the GRAPH softkey.
2 To exit the graphical display, press any softkey.
Measuring Wavelength and Power
3-5
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