User's Manual

Corning Optical Communications User Manual I CMA-336-AEN I Page 17
1.4 External Multiplexer (optional)
Note: The external combiner is optional and ordered separately (P/N: AK-GX-ECPL-COMB).
The 4x1 external multiplexer filters and combines the service specific RF signals received from the GX and transmits the
converged input signals through a single output port to the broadband service antenna.
The multiplexer includes the following interfaces:
 Four service specific RF input connectors (one is unused and should be terminated using the DIN terminator) – used for
connecting to the GX service specific RF connectors
 One output connector – interfaces to the broadband DAS antenna
 One grounding lug
 One QMA coupler port – enables users/field engineers to measure and read signals without interrupting service due to
service cable disconnections. The QMA coupling port serves as the coupling measurement port for reading the signal
without affecting services on the main stream.
Figure 1-7. GX External Combiner