M7 GX Technical Manual
5
Raveon Technologies Corp.
6.3.
Setting a Parameter
To set a parameter in the
M7 GX
modem, enter the Command Mode as described above, then enter the
proper command, a space, the parameter, and then a carriage return. For Example, to set the destination
address of the
M7 GX
modem to 25, enter the following command:
ATDT 25
<CR>.
6.4.
CONFIG Button
If certain parameters within the
M7 GX
transponder are modified in a manor that causes the modem to cease
functioning or if the user cannot enter the command mode via the “+++” method, there is a small push-button
inside the
M7
to assist. This “CONFIG” button may be pressed at any time, and forces the
M7 GX
into a
known state. The CONFIG button is located inside the
M7 GX
. Remove the rear cover, exposing the circuit
board and he button as shown below.
The default settings that the
M7 GX
will revert to when the CONFIG button is pressed are:
1. Serial port 9600 baud, 8 data bits 1 stop, no parity
2. Serial port flow control is off.
3. ATCT setting set to 60000 (60 second time-out)
Even though the serial baud rate reverts to 9600 baud when the CONFIG button is pressed and the IO port
is RS232, it will revert back to the settings programmed into the
M7 GX
once the Command Mode is exited.
7. Commands to Configure Radio Operation
Command
Command Description
Parameters
Factory
Default
ATBD
Baud Rate
– Sets serial com port baud rate (bps). Over-the-air
(throughput) baud rate is set with ATR2 command.
If a PC’s serial baud rate is set higher than the fixed over-the-air
baud rate of the module, hardware handshaking may be required.
Range: 0 – 7
0 = 1200 5= 38400
1 = 2400 6=57600
2 = 4800 7=115200
3 = 9600
4 = 19200
3
ATDT
Destination Address to call
– Sets address of the modem to send
data to. Note, this parameter is entered in HEX format. Each digit
may be a 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,or an F.
Range: 0-FFFF
1234
ATF
Display frequencies
– Display all of the frequencies programmed into all of the
channel memories.
N/A
ATFT
Transmit Frequency –
Program the transmit frequency for this channel. Enter in
Hz or in MHz. The frequency will automatically be saved in non-volatile memory
(flash) for this current channel number.
Range: See product data
sheet. For MURS products,
frequency cannot be
changed.
See product data
sheet.
ATFR
Receive Frequency –
Program the receive frequency for this channel. Enter in
Hz or MHz. The frequency will automatically be saved in non-volatile memory
(flash) for this current channel number.
Range: See product data
sheet. For MURS products,
frequency cannot be
changed.
See product data
sheet.
ATFX
TX and RX Frequency –
Program the receive and transmit frequency for this
channel. Enter in Hz or MHz. Same as issuing an ATFR and an ATFT command.
The frequency will automatically be saved in non-volatile memory (flash) for this
current channel number.
Range: See product data
sheet.
N/A
