User's Manual

Company Confidential 16 Raveon Technologies Corp.
ATHN
Channel Number Select current radio channel number. This
command does not store the channel number into EEPROM,
Range: 1 - 6
1
ATHP
Channel Number – Select current radio channel number. The
channel number is stored in EEPROM memory.
Range: 1 - 6
1
ATIC
Read Current Draw Read the current draw in mA. Accuracy is
within 20% of actual current draw.
Range: 0-9999
N/A
ATJF
Read/set the CTS threshold – Set the serial buffer threshold
where the CTS line is negated. By default the ATJF level is at
80% of the internal buffer size.
1 - 2000
3800
ATL
Enable/Disable the LEDs – 1 = LEDs always off. This reduces
some power consumption. 0 = LED operate normally.
0 or 1
0
ATMT
Protocol Select – The over-the-air communication protocol.
0=Packetized mode, 3=POCSAG paging receiver.
Range: 0 or 3
0
ATMA
Alternate Protocol – If enabled, the alternate protocol is
selected with the Decode Mode input pin, 15.
Range: -1, 0, or 3
3
ATNB
Parity – Selects parity format. Settings 0-4 transfer 8-bits over
antenna port and generate the parity bit on the RF receiving side.
Range: 0 – 5
0 = none
1 = Odd
2 = Even
3 = Mark (1)
4 = Space (0)
0
ATND
Number of Data Bits – Set/read the number of data bits.
Range: 5 - 8
8
ATNS
Stop Bits – Selects the number of stop bits.
Range: 1-2
1
ATR1
Select CD pin output signal – CD may be RF carrier detect, or
modem data detect.
Range : 0 - 4
4 = Data Framing
3= Always negate CD
2 = Always assert CD
1 = Data CD
0 = RF CD
0
ATR3
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 M8S will begin
to transmit the data over the air.
Range: 1 - 999
20
20mS is the
default.
ATR8
Frequency Offset. Used to set the radio on the center of the radio
channel.
Range: -500 to +500
0**
ATRQ
Receiver Signal Level – Reads the Receiver Signal strength
this instant, and returns the level in dBm.
Range: -40 to –130
(dBm)
-
ATRS
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
ATSL
Serial Number – Reads and returns a unique serial number for
thjs unit.
Read Only
1 - 999999999
unique
ATSM
LPM Operation Enable – When set to 1, the DTR input line
controls the M8’s low-power operation. When set to 0, the M8S
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 mode,
disabling the receiver.
Range: 0, 1, 2
0
ATST
Statistics – Show the unit’s operational statistics. See Statistics
section of user manual.
0, 1,2, 3, 4, or 5
None
ATTD
Transmit Test Data – When issued, the modem will begin
transmitting data. The type of data sent is set in the parameter.
0 = Go back to normal
1 = Random