Synchronizing Network Units - GE TransNET 900 Reference Manual

1. Mode X and M Radios—Can have direct reports (Mode R radios) out-
side of the chain.
2. Data (Payload)—Travels from Master to Remote, and back from
Remote to Master.
3. Mode X and R Radios—Extension links can be protected by mapping
one or more fall-back paths in case of a failure. Add secondary exten-
sion addresses (XADDR) into the
[00000000-FFFFFFFF]" on Page
For example, as shown in
as its extension primary, and Remote "B" (X ADDR = 1) as an alterna-
tive in case of a failure of Remote "C" (X ADDR = 2). This arrange-
ment assumes a serviceable path between Remotes "D" and "B", and
requires Remote "D" to be programmed with XMAP = 2 to correspond
with the XADDR address of Remote "B."
TransNET
Radios:
MODE
Radio
ADDR
Confguration:
X ADDR = Ø
X PRI
This configuration is easily arranged through the use of the
in the MDS TransNET Configuration Software's "Store-and-For-
Map
ward Settings."

9.2 Synchronizing Network Units

The Master controls the synchronization for a given network for all modes.
Setting the Master to
radio units in the associated network either directly or through an Extension
radio. This command puts all radios in the entire system in a special
time-division duplexing mode that alternates between two timeslots. One
time slot for data communications upstream and the second for downstream
communications.
The Extensions are single radios which serve as bridges between adjacent
sub-network levels. Extensions will undertake a "Remote personality" in one
timeslot, and a "Master personality" in the alternate timeslot and provide
communications with associated Remotes downstream. Extensions behave
like two radios with their data ports tied together, first synchronizing with
their upstream Master during their Remote personality period, and then
providing synchronization signals to dependent Remotes downstream during
its Master personality period.
54 MDS TransNET Ref. Manual
Figure
A B
= M MODE = X
= 1234 ADDR = 1234
X ADDR = 1
= None X PRI = Ø
Figure 19. SAF Configuration Example
broadcasts a command from the Master to all
SAF ON
table. (See
XMAP
44.)
19, Remote "D" could use Remote "C"
Invisible place holder
C D
MODE = X MODE
ADDR = 1234 ADDR
X ADDR = 2 X ADDR = 3
X PRI = 1 X PRI
XMAP
MDS 05-2708A01, Rev. F
"XMAP
E
= X MODE = R
= 1234 ADDR = 1234
X ADDR = 4
= 2 X PRI = 3
= 2
Extension