NTP-027: Circuit Order 363-206-285
Page 3 of 4 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
7.
!
CAUTION:
Removal of wrong fiber connections will result in a service
interruption. Ensure you remove only the fiber connections
for the optical span being discontinued.
NOTE:
The following operations will activate office alarms. The
audible alarm may be suppressed by depressing the ACO
button.
Remove optical fiber connections from MAIN OLIUs in node
(shelf) being discontinued.
8. Reconnect the optical fibers, bypassing the node just removed.
Ensure all alarms in the ring configuration are off. If alarms are
present, verify fiber connections and integrity.
9. If the removed shelf is not to be left powered, power down the
shelf per local procedures then proceed to Step 12. Otherwise,
continue with Step 10.
DLP-50510. If OLIU circuit packs are
not
removed, connect optical fiber loops
to OLIUs.
11.
NOTE:
The UPD/INIT pushbutton on the SYSCTL is recessed to
prevent its accidental operation. You will need a small
pointed object, such as a ball-point pen to operate it.
If any circuit packs were removed, momentarily depress the
UPD/INIT button on the SYSCTL or use the (upd) command to
update the DDM-2000 internal equipment list.
12. Verify that all alarms go off.
DLP-505
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