Version C16. February 2013
Raveon Technologies Corporation
Company Confidential
21
5.9.
MODEM Commands
Command
Command Description
Parameters
Factory
Default
ATAK
Enable/Disable ARQ – When ARQ is enabled, this
modem will automatically send an ACK packet back to a
modem that sends it data. 0=off, 1=on.
Range: 0 – 1
0 (no AKCs
sent)
ATAT
Silence AFTER Sequence - Sets period of silence after
the command sequence characters in mS.
Range:0 – 1000
(mS)
500
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
5
ATBC
Busy Channel Lock Out – Enable/disable the BCL. If
enabled, the modem will not transmit on a radio channel
that is busy (has RF on if). 0-OFF, 1=ON.
Range: 0-1
0
ATBT
Silence BEFORE Sequence – Sets period of silence
before the command sequence character in mS.
Range: 0-1000
mS
500
ATBW
Set/Read IF Bandwidth - Sets the IF bandwidth to
narrow (N) or wide (W). Narrow is for 12.5kHz channels,
and wide is for 25 or 30kHz spaced channels. This
command is only used on the VHF version of the product.
The UHF does not support w
N
N or W
ATCH
Configure Hardware Flow Control – Enable (1) or
disable (0) flow control. When enabled, the modem will
monitor the RTS line, and if it is negated, stop sending
data out the serial port. If disabled, the modem will ignore
the state of RTS, and always send out characters.
1 = Enable
0 = Disable
0
ATCD
Carrier Detect Threshold – Read/set the carrier detect
threshold, in dBm. -113 means -113dBm. Version
firmware and higher.
-113
-120 to -60
ATCN
Exit AT Command Mode – Exits module from AT
Command Mode and returns it to normal operation mode.
none
none
ATCT
Command Time Out – If no valid commands have been
received via the serial port within this time period (in
milliseconds), modem returns to normal operation mode
from Command mode. If the CONFIG button inside the
RV-M7 is pressed, this parameter will be automatically set
to 60000.
Range: 100-60000mS
60000
ATDT
Destination Address to call
– Sets address of the modem
to send data to. Note, in the RV-M7 GX this parameter is
entered in decimal format. Each digit may be a
0,1,2,3,4,5,6,7,8, or 9. Do not use A,B,C,D,E,or an F.
Range: 0-9999
0001
ATE
Echo
–
Character echo set on (E1) or off (E0). This applies
to the Command Mode only.
Range: 0 , 1
1 ( echo)
ATF
Display frequencies – Display all of the frequencies
programmed into all of the channel memories.
N/A
