9-4 MTR3000 Radio Frequency Distribution System (RFDS) Equipment: Description
9.1.1.4 Antenna Relay
The Antenna Relay module allows a single antenna to be used for both transmit and receive
functions (base station/repeater applications only). The Antenna Relay is controlled by a signal from
the Station Control Module to connect the antenna to either the PA (transmit) when activated/
energized or Receiver Module (receive) when deactivated/de-energized. The Antenna Relay module
is mounted on a flange provided on the rear of the PS.
Note
Simplex operation (Tx=Rx) is not supported.
Note
At least one (either one) of the “GPIO Physical Pins” in the “Accessories” menu of the CPS
must be configured for “Antenna Relay” before the antenna relay functionality is provided
via the P10 (ANT RELAY/PTEMP) connector port on the MTR3000 or the upgraded
MTR2000.
Note
Antenna Relay functionality is provided in analog mode only.
Figure 9-6 Typical Antenna Relay Module – Inputs/Outputs
Connects to Station Transmit RF Output
(From Power Amplifier Module)
Connects to Station Receive
RF Input (To Receiver
Module or to optional
External Preselector)
Connects to Single
Transmit/Receive
Antenna
Connects With Connector
P10 on Backplane Interface
Board
Antenna Relay
Control Cable
Connects to
Peripheral Tray
(Not supported)
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