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Using the Multi-Wavelength Meter
Displaying Wavelength and Power
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 wave-
length value is shown in the upper right corner 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 Agilent 86120B graphical display.
The Peak Threshold value is displayed as a dotted line. All peaks above this
dotted line are displayed in the List by Wavelength and List by Power modes.
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 graph-
ical display even if the wavelength limit function is off.
The graphical display cannot be printed.
To see the graphical display
1
Press the
List by WL
or
List by Power
key.
2
Press the
GRAPH s
oftkey.
3
To exit the graphical display, press any softkey.