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Chapter 9 OSCA-710 Optical Spectrum Measurement
Trace display functions
Display functions
Zoom function
The Zoom function is used to analyze part of the trace in greater detail. In association
with Channel (WDM/OSCA) it enables rapid checking of a succession of events or chan-
nels.
The zoom is centered on the cursor selected. If the two cursors A and B are selected,
the zoom is centered midway between the two cursors.
The position of the section of trace displayed with respect to the complete trace is repre-
sented by a red rectangle on the mini-trace at the top left-hand corner of the screen.
To define a zoom on the trace:
1
Select Cursor A or B and center it on the zone to be examined
2
On the
3
Use the
or
Use touchscreen and click on trace to position the upper left and bottom right
corners of the zoomed area.
Zooming on the different channels in succession
1
Zoom on one of the channels as shown above.
2
On the
3
Use the
Cursors function
The vertical cursors A and B are used in the Zoom and Shift functions to position or
delete markers.
The cursors A and B are represented by vertical lines of different colors:
•
in a solid line if the cursor is selected.
•
in a dotted line if the cursor is not selected.
320
Shift/Zoom
key, select the
or
key to increase or reduce the zoom factor.
Trace/Channel
key, select the
and
keys to move the zoom on to the successive channels.
User Manual
Zoom
function.
Channel
function.
78000010220 Rev. 024
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Troubleshooting
