Company Confidential
14
Raveon Technologies Corp.
ATFX
Frequency for this channel. Set to your frequency.
ATMT 0
0 for normal Packetized operation. Default mode.
ATAK
0 for no ARQ, 1 if this unit sends ACKs. Default is no ARQ.
ATRB
Set the number of retries if ARQ is used (x). 0 if no ARQ used.
Factory default is no ARQ.
ATBD
Serial port baud rate
ATMY
The ID of this unit. Default is 1234.
ATMK
The network address mask. Default is FFFF.
ATDT
The address of the unit this modem will talk to. Default is 1234.
ATBC
Enable/disable busy channel lock-out. Default is off, 0.
6. Connect your serial data device to the modem via the CMOS-to-serial
adapter.
The radio is now ready to use. Any serial data going into the modem will be
transmitted over the air, and any data received over the air will be sent out the
serial port.
Remember, that from the factory, all modems are configured to simply work.
Plug in power and connect to the serial port at 9600 baud, and the modems will
communicate on the default channel. Change the channel frequency to your
specific frequency, and they will be ready to work on your channel.
9.2 Programming Channels and Frequencies
The modem has memory for up to 6 channels. A channel is a pair of
frequencies, one for transmit and one for receive. They may be different or they
may be the same. You may program any valid frequency into any channel
number. To program a channel, perform the following steps.
1. Change to the channel you wish to program, using the
ATHP x
command,
where x is the channel number.
2. Program the frequency for this channel x, using the
ATFT
,
ATFR
, or
ATFX
command. Note that the frequency may be entered in MHz as long
as you use a decimal point. For Example, enter
ATFX 151.82
to set the
channel frequency to 151.820MHz. Alternately, you may enter the
frequency in hertz by entering
ATFX 151820000
. You must enter all of
the zeros if you enter the frequency in hertz.
3. Review the frequency setting with the
ATFT
,
ATFR
, or
ATFX
command.
To see a list of all of the channels, enter
ATF
.
4. To change the radio channel, use the
ATHP
x
command while the modem
is in the command mode.
If the channel number is changed using the ATHP command, and power is later
lost, the channel number will be retained in non-volatile memory as long as was
saved using the
ATSV
(Save to non-volatile memory) command.
Due to the nature of the synthesizer used in the radio, the frequency
programmed into the unit must be an even multiple of its internal reference
