Viavi BN 2301/01, User Manual

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Chapter 1 Optical Spectrum Measurement
Result display
22 MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
The trace represents power (in dBm) as a function of frequency (in THz)
or wavelength (in nm).
The softkey give access to following functions and menus:
NOTE
If several acquisitions are performed, the trace displayed is the one
corresponding to the last acquisition.
Trace
Channel Allows to select a trace or a channel (by means of
the arrow keys). If only one trace is displayed, this
softkey is available but does not allow to select
Trace.
–
Trace : pressing any arrow key selects another
trace (at least two traces must be available).
– Channel : pressing the and

keys selects
another channel.
Zoom
Shift This softkey is only available if the trace is
displayed.
–
Zoom : pressing the arrow keys zooms the axis
according to the selected cursor.
– Shift : pressing the arrow keys moves the trace.
Cursor A
Cursor B This softkey is only available if the trace is
displayed.
Pressing the softkey selects the cursor: A, B, A+B.
Trace
Table Pressing the softkey offers a choice from the
following displays:
–
Trace : Main display of the trace with a single
line of the table at the foot of the page.
– Trace & Table : Display of trace, reduced in size
but followed by 5 to 8 lines of the table of results.
– Table : Display of the table alone.
Table Content Gives access to table related functions.
Advanced Gives access to further trace related functions.