© Microhard Systems Inc.
75
6.0 Configuration
Values
S248 Sync Timeout
1-65534
512
This register defines how many hop intervals where the slave does not receive a
synchronization packet from the master, before it will become unsynchronized and
begins to search for a master.
In a ‘clean’ RF environment, it
may be of benefit to reduce
S251 to 2 or 3 as, should a
Remote
be
unable
to
communicate
for
some
reason, the ‘wait’ time for the
Master to proceed to poll the
next Slave would be reduced
.
Values
S244
Channel Request Mode
0 Channel Request
1
TDMA Mode (Standard)
2
Fast TDMA
3
GPS Indexed TDMA
4
Adaptive TDMA
Channel Request Mode ‘on’ (default), allows a Remote modem which has data to
send to request from the Master permission to do so. When granted, the Remote will
be allowed to transmit all of its data (no other Remotes may transmit during this
period), upon completion of which it will release the channel. This feature eliminates
collisions which would otherwise occur if a number of Remotes were all trying to
transmit at the same time.
TDMA mode is discussed in detail in Section 5.2.1. It relates to Channel Requests in
that, in TDMA mode, the Master does not allow such requests from Remotes; the
Master sequences through a list of Remotes, giving each one in turn an opportunity
to transmit.
Values
S251
Master Hop Allocation Timeout
hops
1-254
10
In TDMA mode (see S244 and Section 5.2.1) this register determines how long, in
hop intervals, the Master will wait for a Remote to either (a) begin to send data or (b)
indicate that it has completed sending all of its data, prior to the Master sequencing to
the next Remote to be given permission to transmit.
