Duplexer Tray - GE MDS Master Station Technical Manual

6.6 Duplexer Tray

Current Master Station offerings always include a Duplexer tray whether or not an internal du-
plexer is included. This allows consistent cabling from either the Radio Module (non-redundant
systems) or the Alarm/Relay Module (redundant systems) to the faceplate of the Duplexer tray.
Wiring internal to the Duplexer Tray routes RF Signals to the antenna connections on the back of
the Master Station as appropriate to the order configuration.
RF Connection to the front of the duplexer tray depends upon order configuration and frequency
plan.
Table 6-16. Cabling to the Duplexer Tray Faceplate
Duplexer Frequency
Option Plan
Internal TX > RX
Internal TX < RX
Simplex TX > RX
TX = RX
TX < RX
External TX > RX
TX < RX
Older versions of the Duplexer Tray faceplate read
In this case, for configurations with internal duplexer in which the TX frequency is lower
than the RX frequency, swap the cables on the Duplexer Tray such that TX is cabled to the
port labelled RX and RX is cabled to the port labelled TX.
90
Cable Antenna Connection
From - To on Back
TX - HIGH COMBINED OUT
RX - LOW
TX - LOW COMBINED OUT
RX - HIGH
TX - HIGH TX
RX - LOW RX
TX - HIGH TX
RX - LOW RX
MDS™ Master Station
Comment
Cable by Frequency Plan to High/Low
Cable by Frequency Plan to High/Low
Software configurable single or dual
antenna port.
Wire TX to High always, independent
of Frequencies
instead of and
TX High
MDS 05-6399A01, Rev. E
instead of .
RX Low