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TransNET radio links the outlying Remote site into the rest of a licensed
MAS system by sending data from that site to an associated TransNET
installed at one of the licensed Remote sites (see
As the data from the outlying site is received at the licensed Remote site, it is
transferred to the licensed radio (via a local cable connection) and is then
transmitted to the MAS Master station in the usual manner. Additional details
for tail-end links are given in Section
Master Station
ACTIV
E
STBY
ALARM
RX ALR
TX ALR
ACTIV
LINE
E
STBY
ALARM
RX ALR
TX ALR
LINE
ENT ER
ESC APE
Remote
Radio
RTU
MAS SYSTEM (LICENSED OR UNLICENSED)
Figure 4. Typical Tail-End Link Arrangement
Extending a TransNET Network with a Repeater
Similar to a Tail-End Link, Store-and-Forward (SAF) offers a way to physi-
cally extend the network range, but in a simple and economical manner. SAF
works by dividing a network into a vertical hierarchy of two or more
sub-networks. Extension radios (designated as
repeaters that link adjacent sub-networks, and move data from one
sub-network to the next one.
MDS TransNET
Master
MODE = M
SAF = ON
MDS TransNET
Remote
MODE = R
RTU
4
MDS TransNET Ref. Manual
REPEATER STATION
MDS x710B
Series Radio
Null-Modem Cable
Remote
Radio
RTU
RTU
MDS TransNET
Remote
MODE = R
Figure 5. TransNET Repeater Network
Figure
4.3 (Page
18).
Invisible place holder
MDS TransNET
Master
LICENSE-FREE SPREAD SPECTRUM SYSTEM
MODE X
Invisible place holder
REPEATER STATION
MDS TransNET
Extension
MODE = X
RTU
MDS 05-2708A01, Rev. F
4).
MDS TransNET
Remote
REMOTE SITE
RTU
) serve as single-radio
MDS TransNET
Remote
MODE = R
OUTLYING
REMOTE SITE
RTU
OUTLYING
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