Company Confidential
18
Raveon Technologies Corp.
R0
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**
R1
Select CD pin output signal – CD may be RF carrier detect,
or modem data detect.
Range : 0 – 3
3 = Framing
2 = Always assert CD
1 = Data CD
0 = RF CD
0
R2
Over-The-Air bit rate - This is the data rate the radio uses to
send data over the air. All RF modems in the network
must use the same over-the-air baud rate. Refer to
section 6.6 for information on how to set the OTA baud rate.
Range:
0 = 800
5 = 9600 2L
1 = 1200
6 = 19200 4L
2 = 2400
7 = 5142 2L
3 = 4800
8 = 9600 4L
4 = 8000 4L 9 = 2000 2L
3 (narrow)
R3
Serial Port Time Out – The time in milliseconds for the serial
port to time out. When data is entering the serial port, and
this amo0unt of time passes with no more data, the M8 will
begin to transmit the data over the air.
Range: 1 – 999
20
20mS is the
default.
R5
Preamble length – The number of bytes to send over-the-air
in the pre-amble.
Range: 3 – 255
5
**
(Varies based on
data rate and
radio type. 7
typical)
R8
Frequency Offset.
Used to set the radio on the center of the
radio channel.
Range: -500 to +500
0
**
RB
Number of retries. If this modem does not get an ACK
back when it sends data, this is the number of times it will re-
transmit the packet and wait for an ACK. 0=disabled feature.
Range: 0-99
0
(ACKs are not
used)
RF
RF Carrier Required – When enabled, there must be RF
energy on the channel for the modem to output data.
Streaming data mode only. 1-RF required. 0=ignore RF
energy when receiving.
Range: 0, 1
0 (no RF
required)
RQ
Receiver Signal Level – Reads the Receiver Signal
strength this instant, and returns the level in dBm.
Range: -40 to –130 (dBm)
-
RS
RSSI (Receive Signal Strength Indicator) – Returns the
signal level of last received packet. The reading is in dBm.
Usable for relative comparison of signals, but absolute value
is within10dB at -90dBm.
No parameters. Returns a
number : -50 to –140
(dBm) varies by model.
None
RV
Disable Remote Access – When enabled (set to a 0), the
modem will respond to over-the-air RPR requests, Pings, and
over-the-air commands. Default is OFF (1).
0 = Remote Access on
1 = Remote Access off
1
S120
Data Framing Pre-time (mS) 255 is data framing off. Use
with ATR1 3. See section 9.6
0-255
255
S121
Data Framing Post-time (mS) 255 is data framing off. Use
with ATR1 3. See section 9.6
0-255
255
SL
Serial Number
– Reads and returns a unique serial number
for thjs unit.
Read Only
1 - 999999999
unique
SH
Show
–
Display the configuration of the modem. This will
return a page of ASCII characters, showing the main
configuration parameters.
none
None
SM
LPM Operation Enable – When set to 1, the DTR input line
controls the M8’s low-power operation. When set to 0, the
M8 will not go into LPM, regardless of the state of the DTR
pin. When set to 2, the modem is forced into a low-power
Range: 0, 1, 2
0
