Raveon RV-M7-UC-GX Quick Start Manual - page 13
M7 GX Quick Start Guide
13
Raveon Technologies Corp.
TXRATE 10
(
configures it to report every 10 seconds whenever it is
moves more than TRIGDX meters)
7.2. Device Addressing
Security Key
The security KEY programmed into every
M7 GX
transponder ensures
that only
M7 GX
transponders with the exact same security code can
receive position and status information. The security key is case
sensitive, so “
Raveon
” and “
RAVEON
” are two different keys.
When you program your own security code into your
M7 GX
transponders, write it down in a secure place. This parameter cannot be
read out of the
M7 GX
. Use the KEYPHRASE command to set the key
phrase. For example, to set the key phrase to Jkl53hhp type:
KEYPHRASE Jkl53hhp
Addressing Basics
Each
M7 GX
has an MYID programmed into it, and is represented as a 4
digit number.
M7 GX
IDs may be any number between 0001 and 9999.
The MYID is programmed with the
ATMY xxxx
command, and the ID of
the destination modem it sends its messages to (the Destination
Address) is configured with the
ATDT xxxx
command.
The default Address Mask is F000, which means the
M7 GX
will receive
a transmission from any other M7 as long as the fist digit matches, in this
case, is a 0.
Make sure you set the MYID of each
M7 GX
in your system to a different
number.
For example, to set the MYID of your
M7
to 17, enter:
MYID 17
To set your M7 to send its position and status data to M7 number 1,
enter:
ATDT 1
To set your address mask to receive all messages from units with IDs 1-
999, and exclude 1000-9999, enter:
ATMK F000
Time Slots
For optimum efficiency in a
M7 GX
system, begin sequentially numbering
the MYID of the
M7 GX
transponders at ID 0001. The second M7 should
be ID 0002, and so on.
The
M7 GX
transponders have internal clocks with 20 ticks-per-second.
They can measure time and initiate transmissions 20 times every second
(every 50mS). The TDMA time slot is configured to be some number of
these ticks. The factory default allocation is 4-ticks for one time-slot. So