JDS Uniphase 4100, Руководство пользователя, Страница: 63 / 182

Chapter 5
Launching a reflectometry test and displaying results
Performing OTDR acquisitions
User Manual 770000102/08
43
Multi-
wavelength
acquisition
If the module possesses several lasers, to perform successive acquisi-
tions on all the wavelengths:
1
In the
S
ETUP
menu, check in
Laser
line, that several lasers are
selected (or select
All
if a module with only one OTDR port is used).
2
Start the acquisition by pressing the
S
TART
/S
TOP
button.
3
Once the acquisition for the first wavelength is finished, the acquisi-
tion for the following wavelength starts automatically.
or
To stop manually the acquisition for current wavelength, click on
Stop Wavelength
. This will allow to automatically start the
measurement for the following wavelength.
The different traces appear in the same window and can be handled simi-
larly to overlaid traces (see
"Overlay trace function" page 61 ).
Actions on
trace during
acquisition
During an acquisition, several actions are available on results in prog-
ress.
Positioning Cursors A and B
1
Select
Cursor A
or
Cursor B
and:
– Set both cursors A & B to control distance between two points.
– Set one cursor A or B to get the distance from one point.
– Set one cursor A or B to zoom on this cursor
Zooming on trace
1
Select
Zoom
function:
– use the menu key in SmartOTDR™
– use the menu key in OTDR Expert
2
Use touchscreen or validation key to zoom in and zoom out on trace
(see
“Zoom function” on page 50 )
Shifting the trace (OTDR Expert only)
In OTDR Expert mode only, the trace can be shifted vertically or horizon-
tally during the acquisition:
1
Select
Shift
function on menu key
2
Use touchscreen or direction keys to shift horizontally or vertically
the trace (see
“Shift function (OTDR Expert only)” on page 51 )
MTS2100 4100 Module US rev08.book Page 43 Jeudi, 1. août 2013 1:43 13