Nortel Passport 15000, Hardware Installation And Maintenance, Page: 389 / 874

Chapter 17 Hardware procedures 389
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
2 At the alarm/BITS module, plug the female D-sub connector of the timing
wire labeled reference B into the connector beside the label J3. See the
figure “Location of the alarm/BITS module and cable connections in a
Passport 15000” (page 390) or “Location of the alarm/BITS module and
cable connections in a Passport 20000” (page 391).
If the alarm/BITS module on a Passport 15000 is either an NTHR12 or
NTHR13, it has factory-installed inline EMI filters attached to the J3 and
J4 connectors as shown in the figure “An EMI filter on an alarm/BITS
connector of a Passport 15000” (page 392). If the EMI filters are missing,
add them as described in “Installing EMI filters on the alarm/BITS module”
(page 599).
3 Fasten the 2 small slotted screws of the D-sub connector to the
alarm/BITS module.
4 For a Passport 15000 or 20000 using the redundant timing setup, plug the
female D-sub connector of the timing wire labeled reference A into the
connector beside the label J4.
5 Fasten the 2 small slotted screws of the other D-sub connector to the
alarm/BITS module.
The operation of the timing signals inside the switch hardware will be verified
when the network synchronization is configured and the timing tests pass.