Microwave Data Systems MDS TransNET 900 Installation & Operation Manual page 55

Simple Extended SAF Network
The following example depicts a two-level network utilizing a single Master
(M) and an Extension (X) radio. See
R
J
Figure 18. Simple Extended SAF Network
In this network, messages directed to Remotes in the "K" sub-network, will
be relayed through Extension radio X
from a Remote in sub-network "K" will pass back through Extension radio
X to the Master M
j,k
frequencies and sub-network "K" but with a different radio-frequency
hopping pattern.
In the SAF operation, the Extension radios are set to
(Details page 32) and operate with a dual personality—50% of the time it
serves as a Remote station and 50% of the time as a Master for sub-network
Remotes.
Extended SAF Network
Below is an example of a multilevel network utilizing two repeaters—X
and X . The example demonstrates the extensibility of the network. In this
K,L
case, messages directed to Remotes in the sub-network L will be relayed
through Extension radios X
Extension radios will split their operating time equally between their Master
and Remote personalities. This multi-layered network can be extended
indefinitely without additional degradation in system throughput beyond that
initially incurred by placing the network in the SAF mode.
MDS 05-2708A01, Rev. B
Figure
M
J
R X
J J,K
R R
K K
Networks: J and K
. Radios in sub-network "J" operate on the same set of
j
and X
J,K K,L
MDS TransNET 900 I&O Guide
18.
Invisible place holder
Sub-Network J
R
J
Sub-Network K
R
K
to the K-Remotes. Any response
j,k
MODE X
. Like the previous example, the
J,K
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