JDS Uniphase 4100, User Manual, Page: 82 / 182

Chapter 5
Launching a reflectometry test and displaying results
Advanced functions in OTDR Expert mode
62
User Manual 770000102/08
Overlaying several
traces stored in
memory
To display up to 8 traces from the memory, deleting the current trace(s)
already loaded:
1
Press the
F
ILE
button
.
2
Select the files of the traces for display.
3
Press the
Load
key .
4
Press
View trace(s)
.
5
When loading is complete, the
Results
screen appears: the first
trace selected is the active trace (in green), the other traces being
overlaid.
Display of traces in
overlay
– The traces are shown in different colors (the active trace is green).
– Their serial numbers are repeated at the top of the screen.
– The OTDR markers are referenced on the active trace by the
symbol
, and on the other traces by vertical dashes.
Adding traces in
overlay
With one or more traces already displayed, to add further traces to the
display (the number of traces displayed cannot exceed 8):
1
Define at least one trace as reference (see “Reference Trace func-
tion” on page 63 )
2
Press the
F
ILE button, and in the Explorer , select the files of the
traces to be added.
3
Press
Load
key.
4
Press the
View Trace(s)
or
Load Trace + Config.
When loading is complete, the new traces are displayed in overlay
with those that were defined as reference traces (see.
“Reference
Trace function” on page 63 )
Swapping overlay
traces
Measurements can only be made on the active trace and not on overlaid
traces. To make measurements on a trace in overlay, it must first be
swapped with the active trace.
1
Press the
Trace
key,
NOTE
If the number of files selected exceeds the display capacity, a mes-
sage gives warning that loading will be incomplete: only the trace or
traces selected first will be displayed, up to the permitted limit of 8
traces.
MTS2100 4100 Module US rev08.book Page 62 Jeudi, 1. août 2013 1:43 13