Basic Mas Master Station Operation; Repeater And Polling Remote Operation - GE MDS 4790M Installation And Operation Manual

4

Basic MAS Master Station Operation

Figure 2 shows a typical point-to-multipoint system using an MDS 4790M
master station.
The most basic system consists of a central master station and several
associated remote units, as shown in Figure 2.
RTU
REMOTE RADIO
SWC OFF
RTU
REMOTE RADIO
SWC OFF
Figure 2. Typical MAS Network

Repeater and Polling Remote Operation

An MAS system using repeater and polling-remote radios is shown in Figure 3.
Notice that the polling remote radio is operating in half-duplex mode and the
repeater is operating in full-duplex mode. Configuring the radio for repeater
operation can be as simple as typing
rear panel diagnostic port. (See "DIAGNOSTICS AND CONTROL" on page
23 for details.)
TX LOW
RX HIGH
RTU
REMOTE RADIO
TX LOW
RX HIGH
RTU
REMOTE RADIO
TX LOW
RX HIGH
POLLING REMOTE
HALF-DUPLEX
SWITCHED CARRIER
Figure 3. Typical Repeater and Polling-Remote Network
MDS 4790M (MPT 1411) I/O Guide
RTU
CONTINUOUSLY
KEYED
MDS MASTER
STATION
HOST SYSTEM
with a PC connected to the
REPEATER ON
RTU
CONTINUOUSLY
KEYED
RTU
TX HIGH
REPEATER
RX LOW
HOST SYSTEM
MDS 05-3628A01, Rev. B
REMOTE RADIO
SWC OFF
RTU
REMOTE RADIO
SWC OFF
RTU
REMOTE RADIO
SWC OFF
REMOTE RADIO
TX LOW
RX HIGH
RTU
TX LOW
RX HIGH
REMOTE RADIO
REMOTE RADIO
TX LOW
RX HIGH