Company Confidential
14
Raveon Technologies Corp.
5.7.
MODEM Commands
Command
Command Description
Parameters
Factory
Default
Available
to USER
ATAT
Silence AFTER Sequence
- Sets period of silence after
the command sequence characters in mS.
Range:0
–
1000
(mS)
500
N
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
N
ATBT
Silence BEFORE Sequence
–
Sets period of silence
before the command sequence character in mS.
Range: 0-1000
mS
500
N
BW
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
N
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
N
ATCD
Carrier Detect Threshold
–
Read/set the carrier detect
threshold, in dBm. -113 means -113dBm. Version
firmware and higher.
-113
-120 to -60
N
ATCN
Exit AT Command Mode
–
Exits module from AT
Command Mode and returns it to normal operation mode.
none
none
N
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-M29
is pressed, this parameter will be automatically
set to 60000.
Range: 100-
60000mS
60000
N
ATDT
Destination Address to call
– Sets address of the modem
to send data to. Note, in the RV-M29 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
N
ATE
Echo
–
Character echo set on (E1) or off (E0). This applies
to the Command Mode only.
Range: 0 , 1
1 ( echo)
N
ATF
Display frequencies
–
Display all of the frequencies
programmed into all of the channel memories.
N/A
N
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.
N
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 (EEPROM)
for this current channel number.
Range:
See product data
sheet. For MURS
products, frequency cannot
be changed.
See product
data sheet.
N
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. User
cannot change frequency in the MURS version of the
Range:
See product data
sheet.
N/A
Y
