"A" Modem
SDx/SDMS
Polling Remote
SCD
9600
8ms
The following table provides the appropriate PTT values for the various baud formats that are
used with the most commonly used "A" modem in mixed repeater networks, that is, modem
9600.
Baud
Polling Remote
and Remote
PTT
96008N1
0ms
96008E1
4ms
User Configuration 2: CKEY Repeater Network Case
The configuration required at the remotes in the presence of a CKEY repeater is very similar to
that of when a non-CKEY repeater is used. The only differences are:
-
The SCD values required at the remotes should be smaller
-
PTT should never be required
"A" Modem
SDx/SDMS
Polling Remote
SCD
9600
6ms
Note: Completely error free performance is not achievable at strong signal because the 9710 takes errors due to a
known 9710 receiver issue.
114
9710/SDx
Remote
SCD
12ms
transmit underflow does not occur because of preamble air time
9710/SDx
Remote
SCD
8ms
MDS™ Master Station
MDS 05-6399A01, Rev. F