User's Manual

Company Confidential 60 Raveon Technologies Corp.
transmission. Once the modem has sent its data the number of times the user
spe
cified in the ATRB xx command, the data is discarded, and the modem will
continue to operate as normal.
It is very important that if one modem is configured to send ACK packets (ATAK
1) that all other modems communicating with it are also set to expect ACK
packets using the ATRB xx command.
To disable ARQ (the default condition of the modem), disable ARQ with the
ATAK 0 and
set retries to zero with the ATRB 0 command.
6. Installation
1. Secure the M7 modem using the four mounting holes on the side flanges
of the unit.
2. Connect a DC power source to the DC IN connection on the front of the
modem. Use the supplied cable, and connect the RED wire to +, and the
black wire to – (ground). The black wire and the case of the M7 should
be connected to earth ground.
3. Connect a good quality antenna, tuned to the operating frequency, to the
RF connector on the front of the modem. Use a good antenna, and place
is at as high-above obstructions as possible.
4. A separation distance of at least 60 centimeters must be maintained
between the transmitter's radiating structures and the body of the user or
nearby persons.
5. Connect the computer, terminal, controller, or other hardware device that
will be using the M7 modem to its DB-9 serial I/O connector using a
shielded cable. Secure it to the M7 with the two mounting screws on the
sides of the DB-9 connector.
6. If the antenna is mounted out doors, us a lighting arrestor in-line with the
antenna, and properly ground the antenna and the M7 chassis to an earth
ground.