Reference –
191
Problem
Solution
4
When the Execute button is
pressed on the SOM, an
error message “increase
span” is displayed on the
SOM.
If the laser power is within limits:
•
Press STOP on the SOM.
•
When SOM scanning has stopped, press
REMOTE on the laser source front panel, if the
LED is lit.
•
Set the laser wavelength to 1520.0 nm.
•
Press ENABLE on the laser source.
•
Use a wave meter to measure the wavelength. If
the wavelength varies from 1520.0 nm by more
than 200 pm, recalibrate the laser.
•
Set the laser wavelength to 1575.0 nm.
•
Measure the wavelength. If the wavelength varies
from 1575.0 nm by more than 200 pm, recalibrate
the laser.
If the measured power continues to remain low, call the
JDS Uniphase sales representative or the service
hotline.
5
LEDs on the Control Module
and the Detector Module
show garbled digits during
SWS software start up, not
the CM01, C001, C002, etc.,
that is normally expected.
Check the pins on the connectors:
•
Turn the power off.
•
Remove the 50-pin ribbon cable at the back of the
receiver chassis (OWB).
•
Repair or replace pins on the connector that are
bent or broken.
•
Repair or replace pins on the connector on the
computer interface card.
•
Reconnect the cable and start the program again.
If the problem is not solved, the receiver needs repair.
Call the local JDS Uniphase representative or the
service hotline.
6
Computer display is blank
on SWS start up.
Check receiver connections:
•
Cycle the power off and on to the receiver.
•
The SWS main window, or the main menu with a
blank window, appears.
If the problem persists, call the local JDS Uniphase
representative or the service hotline.
(table continued)
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