User's Manual

Table Of Contents
Unit Descriptions - RF Path CMA-331-AEN Page 38
Draft
The RIX Expander module provides the RF interface to the OIU unit. Up to two RIX Expander modules are installed in each
HEU chassis, providing support for up to four OIU (via OIU Expander modules - OIX).
IMPORTANT! An unoccupied Expander slot must be terminated with an (Expander Termination Module)
Note: The RIX and OIX Expander modules are similar in appearance but are NOT INTERCHANGEABLE. Each Expander
module is indicated as RIX or OIX on the bottom of the module.
Figure 2-7. RIX Expander Module Interfaces
Port Description
(TO OIX)
Two 9 pin connectors which serve as the RF interfaces to the OIX (in the
OIU). RIX supports connections to two OIXs via an Expander cable (ERFC).
REF OUT/REF IN
Two QMA connectors used for reference clock signal connections between
RIX modules.
Note: The reference clock passes from the Main HEU to all Auxiliary chassis.
Table 2-8. RIX Ports Description