Company Confidential
14
Raveon Technologies Corp.
6.5. MODEM Commands
Command
Command Description
Parameters
Factory
Default
Available
to USER
ATCD
Carrier Detect Threshold – Read/set the carrier detect
threshold, in dBm. -113 means -113dBm. Version
firmware and higher.
-113
-120 to -60
N
ATDT
Destination Address to call
– Sets address of the modem
to send data to. Note, in the RF-7800W 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
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
product. Use ATHP to change channels in the MURS
version.
Range:
See product data
sheet.
N/A
Y
ATHP
Channel Number
– Select separate channels to minimize
interference between multiple sets of modules operating in
the same vicinity.
Range: 1 - 6
1
N
ATHS
Show History
– Show a table of listing the most recent
receptions, and the IDs that the data was sent from
No parameter
Y
ATIC
Read Current Draw
Read the current draw in mA.
Accuracy is within 20% of actual current draw.
Range: 0-9999
N/A
Y
ATL
Enable/Disable the LEDs
– 1 = LEDs always off. This
reduces some power consumption. 0 = LED operate
normally.
0 or 1
0
Y
ATMK
Address Mask
– Configures local and global receive
address space. Each digit may be a
0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,or F. In most applications,
this is kept at F000. Set to 0000 to ensure the unit receives
data from ALL other radios, regardless of the TOID in the
transmission.
Range: 0000 - FFFF
F000
Y
ATMY
Unit Address
– Configures the individual; address for this
unit. Each digit may be a 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,or F.
Note: FF is interpreted as a group. See addressing section.
Range: 0000 - FFFF
0001
Y
ATPO
RF Power Output
. Set or show the RF power output
setting. Value is in percent, from 0% to 100%. Use and RF
wattmeter to confirm the power setting, and adjust the %
accordingly to obtain the desired RF power level. For the
MURS version, the ATPO setting is limited to 40%.
0-110
100
Y
ATR0
Symbol Peak Deviation
– Set the peak FM deviation of
the transmit symbols. Note: This can be a negative number
to invert the modulation.
Range: -1000 – 1000
120**
N
ATR1
Select CD pin output signal – CD may be RF carrier
detect, or modem data detect.
Range : 0 - 2
2 = Always assert CD
1 = Data CD
0 = RF CD
1
N
