User's Manual

Corning Optical Communications DRAFT User Manual I CMA-XXX-AEN I Page 47
4.4.3 Pilot Clock Connections
Pilot clock connections are required in installations with two IHUs. It is required to interconnect the REF IN and REF OUT of the
RIX modules installed in both IHUs.
• Referring to Figure 4-20
, use the QMA/QMA jumper cables
(PCKC47 provided with each RIX) to connect the
REF
OUT
and
REF IN
ports of the RIX modules in the IHU
chassis.
Note: The REF IN and REF OUT pilot clock ports must be
connected in a closed loop.
Figure 4-20. Example of Pilot Clock Connections between
Two IHU Units
4.5 IHU Fiber Connections
The fiber connections are performed for the OIMs using the provided
Corning MTP-LC APC Harness Cable:
• Connect the cable MTP® connector to the OIM MTP connector
• Remove the protective plastic covers and (noting the numbering
1/2/3), connect the three LC APC connection fibers to the FMU
Edge module LC APC connections. See Figure 4-21.
Figure 4-21. OIM Fiber Connections