Raveon RV-M6S User manual

Company Confidential 1Raveon Technologies Corp.
RV-M6S / RV-M6G
D a ta Radio Modem Module
Optional GPS Tracking
T e c h n i c a l M a n u a l
Version A8
March 2021
Raveon Technologies Corporation
2320 Cousteau Court
Vista, CA 92081
www.raveon.com

Company Confidential 2Raveon Technologies Corp.
Table of Contents
1. General Information about the RV-M6...........................................................4
1.1. Congratulations!.............................................................................................................................4
1.2. NOTICE..........................................................................................................................................4
1.3. Safety / Warning Information..........................................................................................................4
1.4. OEM Use........................................................................................................................................4
2. Overview .......................................................................................................7
2.1. Features.........................................................................................................................................7
3. Specifications ................................................................................................9
3.1. General...........................................................................................................................................9
3.2. Transmitter Specifications (RV-M6-xx)...........................................................................................9
3.3. Receiver Specifications..................................................................................................................9
3.4. Interface Specifications ................................................................................................................10
4. Electrical Inputs and Outputs.......................................................................11
4.1. LEDs.............................................................................................................................................11
4.2. I/O Pinout .....................................................................................................................................11
4.3. Heatsinking...................................................................................................................................12
4.4. Mounting Holes ............................................................................................................................12
5. User Serial Port Commands........................................................................14
5.1. Overview ......................................................................................................................................14
5.2. Command Mode...........................................................................................................................14
5.3. Setting a Parameter .....................................................................................................................14
5.4. Reading a Parameter ...................................................................................................................15
5.5. CONFIG Button............................................................................................................................15
5.6. Exiting the Command Mode.........................................................................................................16
6. Command Mode Commands.......................................................................17
6.1. General Command Common to Data Mode and Paging Mode....................................................17
6.2. Data Modem Mode Related Commands ......................................................................................19
6.3. Paging Receiver Related Commands ..........................................................................................21
6.4. Factory Default Settings...............................................................................................................24
7. Using the M6 in Paging Mode ....................... Error! Bookmark not defined.
7.1. Setting Cap Codes .........................................................................Error! Bookmark not defined.
7.2. Setting Paging Data Format...........................................................Error! Bookmark not defined.
7.3. Numeric Messages.........................................................................Error! Bookmark not defined.
7.4. Alphanumeric Messages................................................................Error! Bookmark not defined.
8. Using the M6 –Packet Data Mode..............................................................26
8.1. Setup............................................................................................................................................27
8.2. Programming Channels and Frequencies....................................................................................28
8.3. Data Transmission .......................................................................................................................29
Serial Port Baud Rate...........................................................................................................................29
Busy-Channel Lock Out........................................................................................................................29
8.4. Addressing (Packetized Mode only).............................................................................................30
Addressing Basics................................................................................................................................30
Group Numbers......................................................................................Error! Bookmark not defined.
Hexadecimal Numbers.........................................................................................................................30
Setting A System-Wide Address ..........................................................................................................31
Broadcast Transmissions.....................................................................................................................31
The Address Mask................................................................................................................................31
Addressing Examples:..........................................................................................................................32
8.5. Store-and-Forward Repeating......................................................................................................33
Automatic Repeater Configuration .......................................................................................................33
Manual Configuration of the Repeat Feature........................................................................................33
9. Debug Related Commands .........................................................................52

Company Confidential 3Raveon Technologies Corp.
10. M6 Diagnostic Provisions .........................................................................53
10.1. Overview of Diagnostics...............................................................................................................53
10.2. Reading the Diagnostic Information .............................................................................................53
10.3. Status and Statistics Command ...................................................................................................53
11. Tune-up and Alignment ............................................................................54
11.1. Periodic Calibration ......................................................................................................................54
11.2. Calibration Commands.................................................................................................................54
11.3. Center Frequency.........................................................................................................................55
11.4. TX Deviation.................................................................................................................................55
11.5. TX Modulation Balance..................................................................Error! Bookmark not defined.
11.6. RX Carrier Detect.........................................................................................................................55
12. Troubleshooting........................................................................................58
Symptom: Unit will not receive ............................................................................................................58
Symptom: Unit will not transmit ...........................................................................................................58
Symptom: Receive light blinks, but no data is received.......................................................................58
Symptom: Long delay before transmitting.............................................Error! Bookmark not defined.
Symptom: Cannot enter Command Mode...........................................................................................59
Symptom: Modem appears dead. .......................................................................................................59
Symptom: Repeater will not repeat. ....................................................................................................59
13. Mechanical................................................................................................60

Company Confidential 4Raveon Technologies Corp.
1. General Information about the RV-M6
1.1. Congratulations!
Congratulations on your purchase of an M6 OEM radio modem –the most advanced
and flexible radio modem of its kind available today.
Please take a few minutes to read this manual carefully. The information presented
here will allow you to derive maximum performance from your radio modem. After
reading it, keep the manual handy for quick reference, in case questions arise later on.
1.2. NOTICE
There are no user-serviceable points inside this transceiver. All service work must be
referred to your Authorized Service Center or Raveon Technologies Service
Department.
NOTE: This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.
1.3. Safety / Warning Information
Blasting Caps and Blasting Areas
To avoid possible interference with blasting operations, turn off this radio or remove
the DC power when you are near electrical blasting caps, in a blasting area, or in
areas posted: “Turn off two-way radio.” Obey all signs and instructions.
Potentially Explosive Atmospheres
Turn off your radio prior to entering any area with a potentially explosive atmosphere.
Do not install this product for use in areas with potentially explosive atmospheres. Do
not remove, install, or charge batteries in such areas. Sparks in a potentially
explosive atmosphere can cause an explosion or fire resulting in bodily injury or even
death.
Safety
Warranty is void if the product is used in any way that is in contradiction with this
manual, or if the radio modem housing has been opened or tampered with.
1.4. OEM Use
This radio module is for OEM use, and it is the responsibility of the OEM user to notify
the end-users of RF and electrical safety issues.

Company Confidential 5Raveon Technologies Corp.
1.5. Safety Training Information
Antennas used for this transmitter must not exceed an antenna gain of 0 dBi. The
radio modem must be used in fixed vehicle-mount configurations or at fixed base-
station sites. It is not intended for portable applications.
The RV-M6S-UC (UHF version) safety information:
The maximum permissible exposure to the antenna is:
The minimum separation distance is 30cm.
Max peak output power at antenna input terminal = 33.42 (dBm)
Max peak output power at antenna input terminal = 2197.85 (mW)
Antenna gain (typical) = 0 (dBi)
Maximum antenna gain = 1.0 (numeric)
This radio is restricted to occupational use, work related operations only where the
radio operator must have the knowledge to control the exposure conditions of its
passengers and bystanders by maintaining the minimum separation distance of
following range. Failure to observe these restrictions may result in exceeding the FCC
RF exposure limits.
Antenna Installation
For rear deck trunk installation, the antenna must be located at least the following
range away from rear seat passengers and bystanders in order to comply with the
FCC RF exposure requirements.
For model RV-M6S-VB:
Radiated frequency and Distance
RV-M6S-VB (150-174MHz 2 watts)
(20cm)
FCC ID: SRS-M6S-VB
Raveon Technologies Corporation
For model RV-M6S-VM:
Radiated frequency and Distance
RV-M6S-VM (150-155MHz 2 watts on MURS
channels) (20cm)
FCC ID: SRS-M6S-VM
Raveon Technologies Corporation
For model RV-M6S-UC:
Radiated frequency and Distance
RV-M6S-UC (450-475MHz 2 watts)
(30cm)
FCC ID: SRS-M6S-UC
Raveon Technologies Corporation

Company Confidential 6Raveon Technologies Corp.
1.6. FCC Compliance Information
This device complies with Part 15 and Part 90 FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
The product is only to be operated at frequencies allocated by local authorities, and
without exceeding the given maximum allowed output power ratings. Raveon and its
distributors are not responsible, if any products manufactured by it are used in
unlawful ways.
1.7. Additional INTEGRATION INSTRUCTIONS
In this manual, all users, OEM, companies , and people that use this product must
follow all items mentioned in this manual. Here are more instructions.
A. Do not remote any components or shields from this module. It is a FCC certified module,
so do not change anything on it.
B. Connect a 50 ohm antenna to the module’s unique antenna connector.
C. To not touch the antenna when the radio is on and can transmit.
D. Use it on a channel frequency within the frequency band it is certified in.
E. You product using this must meet the specific requirements in this manual.
F. Input DC voltage that is low noise (<100mV noise) and within the DC input specification.
G. On our product and you user manual, specify the FCC instructions and all safety details.
H. Usage conditions are for mobile, and fixed-mount equipment configurations, as applicable.
I. Ensuring your compliance for RF exposure requirements.
J. An Integrator of this radio that uses it in a portable host device is required to get additional
SAR testing to be performed.
K. Integrators must provide a physical or e-label that states: “Contains FCC ID” with their
finished product. Use this Raveon radio’s FCC ID on the label.
L. This Data Radio modular transmitter is only FCC authorized for the specific rule parts in
the FCC grant. Raveon, this product manufacturer, is
M. The host product manufacturer that uses this product is responsible for compliance to any
other FCC rules that applies to the host, not covered by the modular transmitter grant of
certification.
N. The final host product that uses this product still requires Part 15 Subpart B compliance
testing with the modular transmitter installed.
O. This manual explains how you can configure this modular radio for product evaluation and
for operational conditions used in your product with this stand alone modular transmitter.

Company Confidential 7Raveon Technologies Corp.
2. Overview
The M6 RF radio modem module is capable of high-speed narrow-band data
communications and is compatible with Raveon’s M7 and M6 series Radio Modems.
Its powerful microprocessor enables it to perform as both a data radio modem and a
paging receiver. It contains a receiver, a transmitter, and modem, creating an easy-to-
use transparent data radio link. The M6’s user interface is asynchronous digital data
into and out of the M6.Modem operation is virtually transparent to the user and the
configuration of the modem is via the user serial port. The M6 module may be put in
Raveon’s Tech Series enclosures with a myriad of various I/O interface options.
The command-line interface is similar to Raveon’s other data radio products, and
configuring the mode is very easy. The M6 also has a digital input pin that may be
used to electrically change modem types between data modem and paging modes.
The M6 is an easy to use and its re-programmability makes it extremely versatile.
Most parameters within the modem may be re-configured to optimize it for specialized
operations, extended range, or higher data throughput.
2.1. Features
General Features
Serial input and output. Programmable serial baud rates up to 115.2kbps.
Very small sized and single-board construction.
Very efficient circuitry. ( < 700mW receiving, < 8W transmitting)
Lowest current draw in industry.
Easy to use. Transmit data in = Receive data out.
Receive-only version available
Easily configured using “AT” commands
Extensive diagnostic capabilities
Serial communication may are 8 bit ASCII, or WMX
Data Radio Modem Features
High-speed over the air data rates.
Built-in radio transceiver with integrated modem
Wide input voltage with high-efficiency switching voltage regulator.
Capable of store-and-forward repeating operation.
16 bit addressing for up to 65,525 different unique device addresses per channel
Supports group and broadcast transmissions. Network mask allows groups of any size.
Up to 2 watts of RF output. Other RF power levels available upon request.
Very fast Transmit-to-Receive turn-around time.
Serial input and output. Programmable serial baud rates up to 115.2kbps.
Programmable over-the-air data rates for long-range or high-speed
Automatic keying of transmitter on data input.
Features of GPS Options (RV-M6G)

Company Confidential 8Raveon Technologies Corp.
Automatically transmit location and status information.
Very efficient compressed and encrypted over-the-air protocols.
Utilizes TDMA algorithm for transmitting GPS data so eliminate interference.
Report Rate and TDM slot timing are user configurable.
2.2. Firmware Updating
The M6 is a software based radio and modem. There are times an existing unit needs
to get updated with a new feature, and this can often be done by loading the new
firmware into the older radio modem. In firmware program called the “Boot Loader” is
permanently installed inside the M6’s microcontroller. During power up, it checks to
see if the user wants to update the application program in the microcontroller. The
STAT2 pin is used to trigger the Boot Loader. See application note AN186 for details
on how to boat load new firmware into the M6.

Company Confidential 9Raveon Technologies Corp.
3. Specifications
3.1. General
Model Number, transceiver:.............................................................RV-M6-xx
Model Number, receive only:...........................................................RV-M6R-xx
Model Number, GPS option: ............................................................RV-M6G-xx
Frequency Bands:...............................................................................-UC 450-470MHz -VB 150-174MHz
Serial Port Baud Rates ......................................................................1.2k, 2.4k, 4.8k, 9.6k, 19.2k, 38.4k, 57.6k, 115.2k
Over-the-air baud rates .................................................................... 1200, 2400, 4800, 9600
Operating Mode .................................................................................Simplex or Half-duplex
Full Spec Operating Temperature range.........................................-30°C to +60°C
Extended Temp Range { extended temp specs} .............................-40°C to +60°C
TX-RX and RX-TX turn-around time...............................................<3mS
Wake-up time .....................................................................................<700mS from OFF
On-board LEDs .................................................................................Power , Status
RF I/O Connector ...............................................................................MMCX female
Digital signal levels............................................................................3.3V logic
Enable Input Low...............................................................................40mV
Digital Output High (1K load) .........................................................3.0 - 3.3V
Digital Output Low (1K load) ..........................................................0 - 0.2V
Digital Input High .............................................................................> 3.0V
Digital Input Low ..............................................................................< 0.3V
Enable input High..............................................................................1.40V
DC Input .............................................................................................Clean Regulated 7-14V DC (Max ripple 25mV AC)
3.2. Transmitter Specifications (RV-M6-xx)
RF Power Output ...............................................................................100mW –5.0 W (programmable)
Maximum Duty Cycle (500mW) ......................................................80% to 40C, 20% to 60C
Maximum Duty Cycle (5W, measured over 60 seconds)..............10% to 50C, 5% to 60C
Frequency Deviation .........................................................................± 2.2kHz
Channel spacing.................................................................................12.5kHz
RF Bandwidth.....................................................................................20MHz no-tune
Occupied bandwidth.........................................................................11 kHz
TX Spurious outputs..........................................................................< -70dBc
Occupied Bandwidth.........................................................................Per FCC
FCC Emissions Designator ...............................................................11K0F1D
Frequency Stability ............................................................................Better than ±1.5ppm
3.3. Receiver Specifications
Data RX sensitivity (.1% BER), 4800bps ..........................................< -114dBm
1200 & 2400baud ................................................................................< -118dBm
POCSAG 512 sensitivity (<99% PER) ..............................................< -120dBm
RF No-tune bandwidth .....................................................................20MHz
Channel spacing.................................................................................12.5kHz
Adjacent Channel Selectivity 12.5kHz ............................................-50dB
Alternate Channel Selectivity...........................................................-65dB
Blocking and spurious rejection.......................................................-75dB
RX intermodulation rejection ...........................................................-70dB

Company Confidential 10 Raveon Technologies Corp.
3.4. Interface Specifications
Connector Type.......................................... 20-pin 2mm header
DC Input ..................................................... 6-14V (Clean or regulated, contact Raveon for other voltages)
DC power draw, RX mode ....................... < 600mW
DC power draw, TX mode, 2W................ < 6W
DC current draw, standby mode ............. < 150uA
IO Voltage Levels....................................... 3.3V digital logic
RX and TX data .......................................... Transparent Async
Word length................................................ 8 bits
Format ......................................................... N, O, or E
Modem handshake signals ....................... RTS, CTS, C.D.

Company Confidential 11 Raveon Technologies Corp.
4. Electrical Inputs and Outputs
4.1. LEDs
Status LED (TX) This LED blinks red when the transmitter keys and is putting out RF
power. It blinks green upon the reception of data or RF carrier. It turns orange when
decoding a paging message.
Power LED (PWR) This LED does a short blink, once every two seconds, indicating
to the user that the power to the modem is ON and the modem is working. When the
modem is in the command mode, this LED will blink on and off, once per second.
4.2. I/O Pinout
The I/O connector is a 20-pin header, 2mm pin spacing. Pin-out and connector type
compatible with MaxStream 9XTend.
Pin #
Function
I/O
Function
1
GND
-
Ground. Connect to power ground (negative)
2
Vcc
I
DC Input
3
CD
O
Carrier Detect Out. Low for carrier. Logic high for no carrier. RF or
DATA carrier detect set with ATR1 command. Default: RF RSSI.
4
TX On
O
Pin is High when module is transmitting. Low when off, receiving, or
sleeping.
5
Data In (TXD)
I
Transmit data input.
6
Data Out (RXD)
O
Receive data output.
7
Enable
I
Low (<.7V) to shut down the module. High (>2.5V) to enable it.
8
DTR/Sleep
i
Product Sleep input. When enabled and used, the unit can restart
faster than turning the DC power on and off.
9
CTS
O
Clear to send output. Indicates state of internal input buffer.
ATJF command sets the threshold where CTS is negated.
10
RTS
I
RTS input for serial flow control.
In audio pass-through mode, functions as PTT. 0=TX, 1=RX.
11
RSSI
0
Receiver signal strength indicator
12
3.3V out
O
3.3V out of the M6 module. 50mA max current draw.
13
IOA
AUDIO IN
I/O
General purpose digital I/O. 3V digital logic from CPU on M6. If the
Audio option is used, this pin is used to input transmit audio.
14
IOB
I/O
General purpose I/O. 3V digital logic from CPU on M6. By default
functions as DSR. 0= ready&running. 1=sleeping. If enable=0, this
line will =0.
15
Decode Mode
I
3V digital logic with 10k pull-up.
High/open = POCSAG paging receive mode,
Low/ground=data modem mode.
This feature enabled by setting the alternate protocol with the ATMA
command.
16
STAT1
O
Output to drive external dual-color LED. Connect led between
STAT1 and STAT2.
17
Unused. Do not connect to anything.
18
STAT2
O
Output to drive external dual-color LED. Do not connect the LED to
ground or DC voltage.
19
GND
-
System Ground to M6
20
Unused. Do not connect to anything.

Company Confidential 12 Raveon Technologies Corp.
4.3. Heatsinking
The M6 operates at up to 25% transmit duty cycle at ambient temperatures up to
60°C. For duty cycles up to 100%, the module requires additional heat sinking and
airflow.
If an external heat sink presses against the “GND PAD” are of the PCB, the RF power
transistor will run cooler, and allow higher duty cycles.
4.4. Mounting Holes
6 mounting holes are provided on the module. For best RF performance, the M6
module should be mounted to the system ground, using metal stand-offs.
4.5. STAT LED Outputs
An external dual-color LED may be connected to STAT1 and STAT2 pins to show the
status of the modem. Do not connect the LED to power or ground! Connect the LED
as show below.
Because the STAT2 signal is also used to put the modem into the “bootloader’ mode,
the led must be wired as shown above to ensure a reliable start-up. The Red LED will
blink when the modem transmits, and the green LED will blink on receive of data. It
will also blink orange when decoding a POCSAG message.

Company Confidential 13 Raveon Technologies Corp.
4.6. I/O Options (RS232, 485, USB, 422, Digital I/O …)
The RV-M6 OEM radio module is designed to be integrated into other products. If
there is a need for an enclosure and an I/O connector, contact Raveon for their Tech
Series M22 enclosure with a myriad of I/O options.
The M6 can be ordered in the Tech Series enclosure as a model RV-M22x-BB where
BB is the frequency band: VA, VB, UA, UC,..
The Tech Series enclosure support a myriad of IO options. The M6 radio IO mode
should be put into mode ATIO 8 to automatically detect the Tech Series IO interface
that it is utilizing.
The ATIO command can be used to also force the M6 to utilize a specific Tech Series
IO driver. The following ATIO commands configure the M6 to assume the IO
interfaces connected to its 20 pin header connector.
ATIO
Parameter
0
RS232 adaptor is connected to the header.
1
MIMIC mode
5
Digital IO mode. (Default for M6 OEM modules)
8
Tech Series automatic IO detection.
A
Analog
S
ES232
F
RS422
G
GPIO
T
RS485
U
USB
Read/Set IO Mode Normal digital serial mode is 5. If plugged into Tech Series enclosure, set this to ATIO 8 for automatic IO
detection. Cycle Power to radio after changing ATIO mode. MIMIC mode ATIO 1. S, U, G, T, A to force certain Tech Series IO
operation.
4.7. DTR Input
The DTR input pin can be enabled to put the M6 modem into a deep sleep mode.
Enable this feature with the ATSM command. When enabled, and the DTR signal line

Company Confidential 14 Raveon Technologies Corp.
is more than 2V, the modem is in active run state. When DZTR is less than 0.6V, the
unit will go into a deep sleep mode.
5. User Serial Port Commands
5.1. Overview
The serial portion the RF modem is used to send and receive data over the air, as well
as to configure the RF modem. In normal operation, the user sends data into the TXD
pin of the IO connector, and this data is transmitted over the air. Received data from
another RF modem is output to the user via the RXD pin of the IO connector. This is
the default operating condition of the RF modem. No special characters, hardware
control lines, or timing is required to operate the MS modem.
There is also a “Command Mode” used to program and configure the M6. In the
Command Mode, the MS modem accepts commands via the serial port TxD pin. The
commands can be used to change certain internal parameters of the M6 modem as
well as to read-out the current configuration and diagnostic statistics.
5.2. Command Mode
The M6 modem may be put into a “Command Mode”, by entering a sequence of three
plus characters (+++). To keep the M6 modem from unintentionally entering the
Command Mode because of the +++ pattern occurring in a stream of data entering the
modem, there must be a pause in the data stream before the +++ as well as a pause
after the +++ is sent. If either pause is missing, the modem will not enter the
command mode.
Using serial communications software such as HypterTerminal, send the 3-character
command sequence “+++” while observing times of silence before [BT (Silence Before
Sequence) Command] and after [AT (Silence After Sequence) Command] the
command characters. The default BT and AT times are 500mS.
The default sequence for entering into AT Command Mode:
1. No characters sent for ½ a second.
2. Input three (3) plus characters (“+++”) within ½ of a second.
3. No characters sent for ½ a second.
When the M6 modem first enters the Command Mode, it sends the phrase “Raveon”
followed by the model number
Raveon M6S(transceiver version)
out of its serial port, and then an “OK” sequence. The “OK” sequence is a sequence of
4 characters:
An “O”, “K”, <CR>, and <LF> characters
(<CR> = ASCII 0D, <LF> = ASCII 0A)
5.3. Setting a Parameter
To set a parameter in the M6 modem, enter the Command Mode as described above.
Then enter the proper AT command, a space, the parameter, and then a carriage

Company Confidential 15 Raveon Technologies Corp.
return. For Example, to set the address of the M6 modem to 1234, enter the following
command:
ATDT 1234 <CR>
Once a Parameter is changed, the modem will begin using the new parameter and the
new parameter is saved to non-volatile.
5.4. Reading a Parameter
To read the value of a particular setting, issue the command, with no parameter. The
modem will return the value followed by an “OK”. The modem’s OK response is:
The value in ASCII decimal format.
A <CR> <LF> (<CD> = ASCII 0D, <LF> = ASCII 0A).
An “O”, “K”, <CR>, and <LF> sequence.
For example, if the user enters the command to read the M6’s modem address and its
address was 1234, the user would issue the following command:
ATDT<cr>
and the modem will respond with:
1234 <CR> <LF>OK <CR> <LF>
To get on-line help with a command, enter the command and put a question mark in
for the parameter. For example, to see what the ATDT command is for, type:
ATDT ?
The modem will respond by listing a brief description of the command. To see a list
of all commands, type HELP.
Many commands support the “MIN” and “MAX” parameters to read the minimum and
maximum allowable settings. For example, type ATJF MAX to find the maximum
value the CTS negation threshold may be set to.
5.5. CONFIG Button
If certain parameters within the modem are modified in a manner that causes the
modem to cease functioning or if the user cannot enter the command mode via the
“+++” method described above, there is a small push button internal to the M6 modem
to assist in this case. This CONFIG button may be pressed at any time, and forces
the modem into a known operational state. The CONFIG button is located inside the
modem. Remove the rear cover, exposing the two circuit boards. The button is in the
front edge of the radio module’s circuit board.
The default settings that the modem will revert to when the CONFIG button is pressed
are:
1. Serial port 9600 baud, 8 data bits 1 stop, no parity
2. ATCT setting set to 60000 (60 second time-out)
3. Serial port on the front of the unit in RS232 mode, 9600bps, N/8/1.

Company Confidential 16 Raveon Technologies Corp.
Even though the serial baud rate reverts to 9600 baud when the CONFIG button is
pressed and the IO port is RS232, it will revert back to the settings programmed into
the M6 modem once the Command Mode is exited.
5.6. Exiting the Command Mode
There are three ways to exit the command mode. They are:
1. ATCN Issuing the ATCN. The M6 radio will exit the command mode, and begin
normal operation.
2. EXIT Issuing the EXIT. The M6 radio will exit the command mode, and begin
normal operation.
3. Time Out. After a pre-set amount of time (60 seconds is the factory default time),
the modem will automatically exit the Command Mode, and continue normal
operation. Changes will not automatically be saved. This time-out duration may be set
with the ATCT command.

M7 GX Technical Manual 17 Raveon Technologies Corp.
6. Command Mode Commands
6.1. General Commands
These commands apply to the general configuration of the M6, and are
applicable in both the data modem mode and paging mode.
Command
Command Description
Parameters
Factory
Default
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). Type the
range index (0-7) or the actual desired baud rate.
Range: 0 –7
0 = 1200 5= 38400
1 = 2400 6=57600
2 = 4800 7=115200
3 = 9600
4 = 19200
3
ATBT
Silence BEFORE Sequence –Sets period of silence before
the command sequence character in mS.
Range: 0-1000
mS
500
ATCD
Carrier Detect Threshold –Read/set the carrier detect
threshold, in dBm. -113 means -113dBm.
-113
-120 to -60
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
ATCI
Handshaking Invert –Used to invert the RTS handshaking
signal. 0=normal, 1 = inverted.
1 = Invert
0 = Normal active low.
0
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 M6 is
pressed, this parameter will be automatically set to 60000.
Range: 100-60000mS
60000
ATE
Echo –Character echo set on (E1) or off (E0). This applies to
the Command Mode only.
Range: 0 , 1
1 (echo)
ATDEN
Data Encryption –0:disable. 1:AES128 GPS messages
2:AES128 Data and GPS messages. If not disabled, the
transmitted data is encrypted with the selected encryption
method using the KEYPHRASE.
Range: 0 , 1
0 (off)
ATF
Display frequencies –Display all of the frequencies
programmed into all of the channel memories.
N/A
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.
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 (flash) for this current channel
number.
Range: See product data
sheet. For MURS products,
frequency cannot be
changed.
See product
data sheet.
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. The frequency will
automatically be saved in non-volatile memory (flash) for this
current channel number.
Range: See product data
sheet.
N/A

M7 GX Technical Manual 18 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
ATI0
Read/Set IO Mode Normal digital serial mode is 5.If plugged
into Tech Series enclosure, set this to ATIO 8 for automatic IO
detection. Cycle Power to radio after changing ATIO mode.
MIMIC mode ATIO 1.S, U, G, T, A to force certain Tech Series
IO operation.
Range: 0-8
5
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
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
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 –5
5 = GPIO
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 M6 will begin to
transmit the data over the air.
Range: 1 - 999
20
20mS is the
default.
ATR8
Frequency Offset. Used to adjust the radio on the center of the
radio channel. Offset in Hz, 120Hz resolution.
Range: -5000 to +5000
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
Electronic Serial Number –Reads and returns a unique
electronic serial number for this unit.
Read Only
1 - 999999999
unique
ATSM
LPM Operation Enable –When Low Power Mode (LPM) is set
to 1, the DTR input line controls the M6’s low-power operation.
When set to 0, the M6G 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. When set to 4, the RX
is turned off, and the transmitter will still send data and GPS
position report.
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.
Entering a <CR> will terminate the transmission.
0 = Go back to normal
1 = Random
3 = 1010… at ¼ baud rate
4 = TX all 0s
5 = TX all 1s

M7 GX Technical Manual 19 Raveon Technologies Corp.
6 = Test Points ON
7 = Transmit CW
8 = Transmit 1010101…
ATTE
Read product temperature –Read the internal temperature of
the unit’s circuit board in degrees Celsius.
-40 to +99
-
ATVB
Read DC input Voltage–Returns the DC input voltage reading,
in mV (12500 = 12.5VDC input).
None
none
ATVR
Firmware Version –Returns firmware version currently loaded
on the module.
Read Only, 3
characters
none
AT&F
Restore Factory –Restore the factory default values. This
command will not erase the calibration values. After this
command executes, the modem will still be in the CONFIG mode.
none
BAND
Read the Band –Reads the frequency band of the radio.
First parameter is the text version (UA, UC, VB, …), second
parameter is the lower limit, and the third parameter is the
upper limit in MHz. Use to read the band that the radio is
tuned to cover.
None
-
CONFIG
Display the M6’s configuration.
0, 1, or 2
-
CHNUM
Read number of channels. This command will return the
number of channels this product has.
6
MIMIC
MIMIC mode. MIMIC X Y X number of seconds to TX if
input is low. Y is number of seconds between transmissions
when the input is high.
None
M6 or M6R
MODEL
Read Model number. Read the model number of the unit.
None
M6 or M6R
QSIZE
Read the number of queued WMX frames in the WMX queue.
None
-
QCLR
Remove all WMX frames from the WMX frame queue.
None
-
SHOW
Show/display an overview of the radio’s configuration.
None
-
WMX
Read/set the WMX serial port protocol. 0=off, 1= enabled.
0, 1
0
WMXVR
Read the WMX version
None
WMXINFO
Read WMX information. Returns: Aa, bb, ccc, dd where
AA = Number of WMX message buffers in the product’s WMX
queue.
bb = Number of WMX messaged queued up in the product’s
WMX frame queue.
ccd = Total size of WMX message buffers in bytes.
dd = WMX version implemented in the product.
** indicates values that are calibrated in the factory and are unit-specific. If the “Radio
Type” is changed, these will need to be re-calibrated.
6.2. Data Modem Mode Related Commands
These commands apply to the operation of the M6 when it is in the data
modem communication mode.
Command
Command Description
Parameters
Factory
Default
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
ATDT
Destination Address to call–Sets address of the modem to
send data to. Note, this parameter is entered in HEX format.
Each digit may be a 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,or an F.
Range: 0-FFFF
1234

M7 GX Technical Manual 20 Raveon Technologies Corp.
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.
N, W
N or W
ATHS
Show History –Show a table of listing the most recent
receptions, and the IDs that the data was sent from
No parameter
ATHX
Enable/Disable single-hop repeating –0=any number of
repeats, 1 –unit will not repeat a packet that was already
repeated.
0 or 1
0 (multi-hop
OK)
ATLA
Listen Address –Configures the listen address for this unit. The
unit will receive data if this listen address matches the destination
address in a data transmission. FFFF to disable it.
Range: 0000 - FFFF
1234
ATMK
Address Mask –Configures local and global 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 FFFF.
Range: 0000 - FFFF
FFFF
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
1234
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. Not linear, it’s an adjustment in PO.
0-100
100
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**
ATR2
Over-The-Air bit rate - 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 the section “Setting
the RF Rate”for information on how to set the OTA baud rate.
Range: 0 - 12
0 = 800 5 = 9600 2L
1 = 1200 6 = 19200 4L
2 = 2400 7 = 5142 2L
3 = 4800 8 = 9600 4L
4 = 8000 4L
3
ATR5
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)
ATRB
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)
ATRF
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)
ATRV
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
ATTT
Max Packet Size –Set the maximum number of bytes in an
over-the-air packet.
1 - 512
80
ATXn
Show or Configure the Repeat Table –Set the addresses that
this unit will store-and-forward data to/from. n = 1, 2, 3, or 4
designating the entry in the table to show or edit..
Four parameters
aaaa bbbb cccc dddd where
aaaa=Source Address
bbbb = S.A. Mask
cccc = Destination Address
dddd = D.A. Mask
ATXR
Enable/Disable Store and Forward Repeating –0=disabled, 1
–enabled.
0 or 1
0 (Off)
ATXT
Read/set repeater delay –Read or set the repeater delay. This
is the time between receiving a data packet, and the time the
repeater will re-send it.
PRDT
Preamble Detect. Returns 1 if the device is detecting a preamble
pattern. Returns 0 if it does not.
0 1
-