Raveon RV-M7 User manual

Company Confidential 1 Raveon Technologies Corp.
R V - M 7 D a t a Radio Modem
T ech n ic a l Ma n ua l
Version C3
March 2010
(IP65 Weatherproof Version)
Raveon Technologies Corporation
990 Park Center Drive, Suite C
Vista, CA 92081
www.raveontech.com

Company Confidential 2 Raveon Technologies Corp.
Table of Contents
1. General nformation about the RV-M7 ...........................................................5
1.1. Congratulations!........................................................................................................................... 5
1.2. NOT CE ....................................................................................................................................... 5
1.3. Safety / Warning nformation ....................................................................................................... 5
1.4. Safety Training information: ......................................................................................................... 6
1.5. FCC Compliance nformation....................................................................................................... 7
2. Overview........................................................................................................8
2.1. Features....................................................................................................................................... 8
3. Specifications.................................................................................................9
3.1. General ........................................................................................................................................ 9
3.2. Transmitter................................................................................................................................... 9
3.3. Receiver....................................................................................................................................... 9
3.4. User nput and Output Signals..................................................................................................... 9
3.5. Model Numbers.......................................................................................................................... 10
4. Electrical nputs and Outputs .......................................................................11
4.1. LEDs .......................................................................................................................................... 11
4.2. DC Power .................................................................................................................................. 11
4.3. RS232/E A232 Serial /O Connector.......................................................................................... 11
4.4. -WX weatherproof Version......................................................................................................... 12
Power Cord.......................................................................................................................................... 13
4.5. RS232 serial cable for –WX version .......................................................................................... 14
4.6. Optional E A-485/RS-485 Serial /O........................................................................................... 15
RS-485 Connector Pin Out.................................................................................................................. 15
Configuring .......................................................................................................................................... 15
Bias and Termination Resistors........................................................................................................... 16
4.7. RS422/E A-422 Serial /O Connector......................................................................................... 17
Configuring for RS-422........................................................................................................................ 17
Bias and Termination Resistors........................................................................................................... 17
4.8. Low Power Mode (LPM) ............................................................................................................ 18
5. User Serial Port Commands ........................................................................19
5.1. Overview.................................................................................................................................... 19
5.2. Command Mode ........................................................................................................................ 19
5.3. Setting a Parameter ................................................................................................................... 19
5.4. Reading a Parameter................................................................................................................. 20
5.5. Radio Manager .......................................................................................................................... 20
5.6. CONF G Button.......................................................................................................................... 21
5.7. Exiting the Command Mode....................................................................................................... 22
5.8. Password Protection .................................................................................................................. 22
5.9. Command Mode Commands ..................................................................................................... 23
5.10. Other non-AT commands........................................................................................................... 26
5.11. Factory Default Settings............................................................................................................. 26
6. Using the M7 Modem – Packet Mode..........................................................28
6.1. Setup ......................................................................................................................................... 29
6.2. Programming Channels and Frequencies.................................................................................. 30
6.3. Data Transmission ..................................................................................................................... 30
Serial Port Baud Rate.......................................................................................................................... 30
Flow Control ........................................................................................................................................ 31
Packet Size.......................................................................................................................................... 31
Key-On_Data....................................................................................................................................... 31
Busy-Channel Lock Out....................................................................................................................... 32
6.4. Addressing (Packetized Mode only)........................................................................................... 32
Addressing Basics ............................................................................................................................... 32
Group Numbers ................................................................................................................................... 32
Hexadecimal Numbers ........................................................................................................................ 33

Company Confidential 3 Raveon Technologies Corp.
Setting A System-Wide Address.......................................................................................................... 33
Broadcast Transmissions .................................................................................................................... 33
The Address Mask............................................................................................................................... 34
Addressing Examples:......................................................................................................................... 35
6.5. Error Correction ......................................................................................................................... 35
6.6. Store-and-Forward Repeating.................................................................................................... 36
Automatic Repeater Configuration....................................................................................................... 36
Manual Configuration of the Repeat Feature....................................................................................... 37
7. Using the M7 Modem – Streaming Mode.....................................................41
7.1. Streaming Mode Operation........................................................................................................ 41
7.2. Baud Rate Selection .................................................................................................................. 41
7.3. Bit Errors.................................................................................................................................... 42
7.4. Carrier Detect............................................................................................................................. 42
7.5. Serial Data Flow Control ............................................................................................................ 42
7.6. Setting the Over-The-Air Data Rate ........................................................................................... 43
8. nstallation....................................................................................................45
9. FCC Licensing nformation ..........................................................................45
10. Debug Related Commands ......................................................................46
11. M7 Diagnostic Provisions .........................................................................48
11.1. Overview of Diagnostics ............................................................................................................ 48
11.2. Reading the Diagnostic nformation ........................................................................................... 48
11.3. Status and Statistics Command................................................................................................. 48
11.4. ATST Command ........................................................................................................................ 50
11.5. ATST2 Command ...................................................................................................................... 50
11.6. ATST3 Command ...................................................................................................................... 51
11.7. ATST4 Command ...................................................................................................................... 51
12. Tune-up and Alignment............................................................................51
12.1. Periodic Calibration.................................................................................................................... 51
12.2. Calibration Commands .............................................................................................................. 51
12.3. Center Frequency ...................................................................................................................... 52
12.4. TX Deviation .............................................................................................................................. 52
12.5. TX Modulation Balance.............................................................................................................. 53
12.6. RX Carrier Detect....................................................................................................................... 53
13. SkyLine Compatibility...............................................................................54
13.1. General ...................................................................................................................................... 54
13.2. Configuring M7 to Communicate with a SkyLine........................................................................ 54
14. Antenna nformation.................................................................................54
15. Appendix A. Serial Port Hardware..........................................................56
15.1. Serial Port Data and Handshaking Signals ................................................................................ 56
15.2. Null modem without handshaking .............................................................................................. 58
15.3. Compatibility issues ................................................................................................................... 58
15.4. Null modem with full handshaking.............................................................................................. 59
15.5. Compatibility issues ................................................................................................................... 59
16. Troubleshooting .......................................................................................60
Symptom: Unit will not receive............................................................................................................ 60
Symptom: Unit will not transmit .......................................................................................................... 60
Symptom: Receive light blinks, but no data is received...................................................................... 60
Symptom: Long delay before transmitting .......................................................................................... 61
Symptom: Cannot enter Command Mode .......................................................................................... 61
Symptom: Modem appears dead........................................................................................................ 61
Symptom: Repeater will not repeat..................................................................................................... 61
17. Mechanical...............................................................................................62

Company Confidential 4 Raveon Technologies Corp.

Company Confidential 5 Raveon Technologies Corp.
1 General Information about the RV-M7
1 1 Congratulations!
Congratulations on your purchase of a M7 radio modem – the most advanced
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
Besides the fuse, 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.
1 3 Safety / Warning Information
WAR I G - DO NOT operate theRV-M7-U radio modem when bystanders
are near the antenna.
For the RV-M7-UC, do not operate the radio modem when bystanders are
within 2 feet (60cm) of the antenna.
For the RV-M7-VB, do not operate the radio modem when bystanders are
within 3 feet (90cm) of the antenna.
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.
ote:
The areas with potentially explosive atmospheres referred to above include fueling
areas such as below decks on boats, fuel or chemical transfer or storage facilities, areas
where the air contains chemicals or particles, such as grain, dust or metal powders, and any
other area where you would normally be advised to turn off your vehicle engine. Areas with
potentially explosive atmospheres are often but not always posted.

Company Confidential 6 Raveon Technologies Corp.
1 4 Safety Training information:
Antennas used for this transmitter must not exceed an antenna gain of 0 dBd.
The radio modem must be used in fixed vehicle-mount configurations or at
fixed base-station sites. t is not intended for portable applications.
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-M7-UC:
Radiated frequency and Distance
RV-M7-UC (450-480MHz 5 watts)
1.97 Feet (0.6 m)
FCC D: SRS-RV-M7-UC
Raveon Technologies Corporation
For model RV-M7-VB
Radiated frequency and Distance
RV-M7-VB (150-174MHz 5 watts)
90cm
FCC D: SRS-M7-VB
Raveon Technologies Corporation
For vehicular roof top installation, the antenna must be placed in the center of
the roof.

Company Confidential 7 Raveon Technologies Corp.
1 5 FCC Compliance Information
This device complies with part 15 of the 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.
NOTE: The manufacturer is not responsible for any radio or TV interference
caused by unauthorized modifications to this equipment. Such modifications
could void the user’s authority to operate the equipment.
This product also complies with FCC Part 22, 90 and Part 95 Subpart J of the
FCC rules and regulations.
The Federal Communications Commission (FCC), with its action in ET Docket
93-62, has adopted a safety standard for human exposure to Radio
Frequency (RF) electromagnetic energy emitted by FCC-certified equipment.
This product meets the uncontrolled environmental limits as stated in OET-
65C (01-01) when operated in accordance with the operation guidelines
described in this manual. Proper operation of this radio device according to
the instructions in this publication will result in user exposure substantially
below the FCC recommended limits.
This equipment generates, uses, and radiates radio frequency energy, and if
not installed and used in accordance with the instructions, may cause harmful
interference. However, there is no guarantee that interference will not occur. f
this equipment does cause interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is
encouraged to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• ncrease separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician.

Company Confidential 8 Raveon Technologies Corp.
2 Overview
The M7 RF data radio is a rugged high-performance, high-speed narrow-band
data modem. t contains a receiver, a transmitter, and modem, creating an
easy-to-use transparent data radio link. The M7’s user interface is
asynchronous RS-232 data into and out of the M7 (CMOS level optional).
Modem operation is virtually transparent to the user and the configuration of
the modem is via the user serial port.
Unlike any other radio modem on the market, the M7 may be operated in
either a “Packetized Mode” or a “Strea ing Real-Ti e Mode”. There are
advantages to each approach, and your choice depends upon how your
system operates.
For privacy and network versatility, the M7 incorporates a 16 bit identification
code. ts protocol also uses a 16bit CRC to guarantee the integrity of the
data. Perfect for SCADA and telemetry applications, the M7 can be used for
simple point-to-point data communication applications, or for more
sophisticated point-to-multipoint, peer-to-peer, or mesh networks.
Although the M7 is the easiest to use modem on the market, 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
• High-speed over the air data rates.
• Built-in radio transceiver with integrated ode
• Easy to use. Plug-in, Turn-on, and GO. Trans it data in = Receive data out.
• Lowest current draw in industry.
• Wide input voltage with high-efficiency switching voltage regulator.
• Integrated Packet data protocol and built-in Strea ing Real-Ti e operation.
• ARQ error correction and retrans ission capability. Totally transparent to the application.
• Capable of store-and-forward repeating operation.
• S all sized and very rugged extruded enclosure.
• 16 bit addressing for up to 65,525 different unique device addresses per channel
• Supports group and broadcast trans issions. Network ask allows groups of any size.
• 2 watts of RF output. Other RF power levels available upon request.
• Easily configured using “AT” co ands
• Very fast Trans it-to-Receive turn around ti e.
• RS-232 serial input and output. Progra able serial baud rates up to 57600.
• Progra able over-the-air data rates for long-range or high-speed
• Auto atic key of trans itter on data.
• RF carrier-detect is not required receiving. No squelch setting required.

Company Confidential 9 Raveon Technologies Corp.
3 Specifications
3 1 General
All measurements made per T A-603-B
Frequency: Model RV-M7-VA (Export only) .................................................................... 136 - 155MHz
Model RV-M7-VB .......................................................................................... 150 - 174MHz
Model RV-M7-UC .......................................................................................... 450 – 480MHz
Model RV-M7-UA (export only) ..................................................................... 403 – 434MHz
Size ................................................................ 4.60” X 2.60” X .956 (11.7cm X 6.6cm X 2.43cm)
Weight ................................................................................................................. 6 ounces (0.17kg)
DC input voltage ............................................................................................................................ 10-16V DC
nternal fuse ............... 3A mini blade. Littlefuse part number 0297003 or Raveon part, number 1X726-3
FCC D Model RV-M7-UC-N ....................................................................................SRS-RV-M7-UC
Model RV-M7-VB .............................................................................................. SRS-M7-VB
All other models for export or OEM use
3 2 Transmitter
See ndividual product data sheets for RF specifications
3 3 Receiver
See ndividual product data sheets for RF specifications
3 4 User Input and Output Signals
Serial port baud rates................................................. 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Voltage levels .................................................................... RS-232, RS-422, and RS-485 complaint levels
Modem handshake signals ..................................................................................... RTS, CTS, DTR, DSR, CD
RF /O ......................................................................................................................... 50 ohm BNC
Power .............................................................................................................B+ input and Ground
Power Connector ....................................................................... Phoenix 18 36 18 9 ( Raveon P/N 1J165-3 )

Company Confidential 10 Raveon Technologies Corp.
3 5 Model Numbers
The model number of the M7 modem identifies its operating frequency band,
rf power level, and bandwidth. The models are:
RV-M7-
ab-c-oo where:
a = The band (V=136-174MHz, U=406-512MHz)
b = Sub band (A,B,C,…)
c = Channel Spacing (blank=12.5kHz, W=25kHz)
oo = Options (-GX for GPS, -WX for waterproof enclosure)
Other frequency bands, power levels, and channel spacing are available. Contact
the factory for your specific needs.
Sub-Bands
Sub-Band
Letter
VHF (RV-M7-V…) UHF (RV-M7-U…)
A 136-155MHz 403-434MHz
B 150-174MHz 435-451MHz
C 450-480MHz

Company Confidential 11 Raveon Technologies Corp.
4 Electrical Inputs and Outputs
The front panel of the M7 modem has these features:
1. RF connector
2. Power LED
3. Status LED (Receive data = green, TX = red)
4. 9-Pin Serial I/O connector
5. DC Power Jack
4 1 LEDs
The status LED visually show the current status of the radio.
Status LED (TX) This LED blinks red when the transmitter keys and is
putting out RF power. t blinks green upon the reception of data or RF carrier.
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 DC Power
DC power for the modem is connected to the 2-pin DC power input jack
labeled DC I . Use the supplied cable to connect the DC power. The red
wire is positive (+) and the black wire is negative (-). ts connection is
optional, as the user may alternately apply power to Pin 9 and ground to pin 5
of the 9-pin /O connector.
The M7 modem is supplied with a DC power cable, Raveon part number
1C738-1.
Note: The M7 has in internal 3-amp mini-fuse (automotive type) to protect it
and its power source against reverse voltage and serious hardware failures.
n the event it is blown due to a reverse voltage, it may be replaced by
removing the internal circuit board and unplugging the fuse. This must be
done by a qualified electronic technician using ESD precautions.
4 3 RS232/EIA232 Serial I/O Connector
The RS232 9-pin serial /O connector is a female 9-pin D-subminiature
connector having the following pins configuration. t is pinned out so that it
may be plugged directly into a computer or PC’s 9-pin COM port.

Company Confidential 12 Raveon Technologies Corp.
Front-view of DB-9 connector on modem (female)
Pin Name Dir Function Level / Specification
1 CD out Carrier detect f enabled, indicates presence of carrier.
Logical 0 (+ voltage on RS-232) means carrier
is present. f disabled, it is asserted (0)
whenever the modem is operational, and not in
the configuration mode. t will be a 1 when the
modem is in the configuration mode.
2 RxD out Receive data Data out of the modem.
3 TxD in Transmit data Data into the modem.
4 DTR in Data terminal
ready
Normally ignored by the M7 modem. May
control the power-state of the modem in low-
power mode if this feature is enabled.
5 GND Ground
connection
Signal and power ground
6 DSR
out
Data Set Ready
Normally is set to 0 when modem is powered on
and running. Modem sets to a 1 when in low-
power mode.
7 RTS
in
Request to send
Used to stop/start the flow of data coming out of
the modem TxD pin. 0 = OK to send, 1 = don’t
send. Leave disconnected if not used.
8 CTS
out
Clear to send
Used to stop the flow of data going into the RxD
pin from the device connected to the M7. 0 =
OK to send, 1 = don’t send. f the M7 cannot
accept more data, it will negate this signal (set
to a 1).
9 Power n/out
DC power (not
Ring signal)
User may supply the DC power to the modem
on this pin.
Note: RS-232 signals use positive and negative voltages to represent digital 1s and 0s. A positive
voltage is a 0, and a negative voltage is a digital 1.
This pin-out allows it to be directly plugged into a computer’s 9-pin serial port
using a conventional 9-pin RS-232 serial cable. To connect it to a modem, or
computer peripheral that has a serial port, you will need a “null- ode ”
cable. See Appendix A for more information on wiring a null-modem cable.
To configure the M7 modem for RS-232 operation, use the ATIO 0 command.
RS-232 is the default operation mode for the connector. RS-485 is a factory
option. See the next section for details on the RS-485 option.
4 4 -WX weatherproof Version
The –WX version of the product is functionally the same as the standard
version, except it is P65 rated for weather resistance. t has special water-
resistant connectors on it, and a sealed enclosure to keep moisture out of the
unit.

Company Confidential 13 Raveon Technologies Corp.
The DC nput connector is a Bulgin PX0412/03P
The RS232 /O connector is a Hirose HR30-6R-6P(71)
The RF /O connection is a TNC female.
Power Cord
The DC power cord uses a Bulgin connector, part number SA3349/1.

Company Confidential 14 Raveon Technologies Corp.
4 5 RS232 serial cable for –WX version
The RS232 serial cable uses at Hirose connector, part number HR30-6P-
6S(71).

Company Confidential 15 Raveon Technologies Corp.
4 6 Optional EIA-485/RS-485 Serial I/O
RS-485 Connector Pin Out
RS-485 is a two-wire connection, with the pair of wires transmitting and
receiving data. With the RS-485 enabled (ATIO 2 command), the 9-pin serial
/O connector on the front of the M7 is a female 9-p D-subminiature
connector having the following pins configuration.
Front-view of DB-9 connector on modem (female)
Pin # Name Dir Function Level / Specification
1
- Do not connect Do not connect this pin to anything.
2 B (-)
/O B nverting RS-485 data in line
3
Out -
out Z Connect to pin 2
4 A (+)
/O A Non-inverting RS-485 data out line
5
GND Ground Connect to earth ground.
6
- Do not connect Do not connect this pin to anything.
7
Out +
out Y Connect to pin 4
8
9
Vin n/Out DC Power DC Power in or out if unit is powered using DC
in jack.
The RS485 differential line consists of two pins, A and B.
A TxD-/RxD- aka inverting pin which is negative (compared to B) when the
line is idle.
B TxD+/RxD+ aka non-inverting pin which is positive (compared to A)
when the line is idle.
Configuring
To configure the M7 modem for RS-485 operation, use the ATIO x command.
ATIO 2 sets the serial port for standard RS-485, full duplex. ATIO 3 sets the
serial port for RS-485 simplex mode. n most cases, RS-485 simplex is
preferred (ATIO 3 ). n simplex RS-485 mode, the M7’s serial data receiver
is internally disabled whenever it sends a character out the serial port, so that
it will not receive its own data. For most application use the RS485 simplex
mode, ATIO 3. f you are using two M7 modems with RS485 on both units,
you must use the simplex RS485 mode instead of the duplex RS485 mode, or
the modems will enter an infinite loop-back condition.

Company Confidential 16 Raveon Technologies Corp.
Raveon’s RS-485 /O circuit uses 3.3V logic to drive the lines, and the RS485
pins are ESD protected to ±15kV and 7kV human body model
. nput current
is less than 150uA. Output current when not driving the line is less than
50uA.
Bias and Termination Resistors
RS-485 installations typically have a termination resistor across the A and B
lines. For low-speed operation (<57600 baud), this resistor is probably not
necessary. f you wish to use a terminating resistor, a value of 150 ohms
should work in most applications.
These A/B pin names are all in use on various types of equipment. The
RS485 signaling specification states that signal A is the inverting or '-' pin and
signal B is the non-inverting or '+' pin. The same naming is specified in the
NMEA standards.
When an RS-485 network is in an idle state, all nodes are in listen (receive)
mode. Under this condition there are no active drivers on the network. All
drivers are tri-stated. Without anything driving the network, the state of the A
and B line is unknown. f the voltage level at the receiver's A and B inputs is
less than ±200mV the logic level at the output of the receivers will be the
value of the last bit received. n order to maintain the proper idle voltage
state, bias resistors must be applied to force the data lines to the idle
condition.

Company Confidential 17 Raveon Technologies Corp.
M7 RS-485 receivers have built-in bias resistors, offering the network a true
“1/8 unit load”. n most allocations, these internal bias resistors are sufficient,
and an external bias resistor is not required.
Phoenix Contact/Tyco makes a convenient DB-9 to terminal-block connector,
part number 2761839.
4 7 RS422/EIA-422 Serial I/O Connector
RS-422 communications uses 4-wire differential signals. The RS422 9-pin
serial /O connector is a female 9-p D-subminiature connector having the
following pins configuration.
Front-view of DB-9 connector on modem (female)
Pin # Name Dir Function Level / Specification
1
- Do not connect Do not connect this pin to anything.
2 B (-)
n B nverting RS-485 data in line
3
Out -
out Z nverting data out pin
4 A (+)
in A Non-inverting RS-485 data in line
5
GND Ground Connect to earth ground.
6
- Do not connect Do not connect this pin to anything.
7
Out +
out Y No-inverting data out
8
9
Vin n/Out DC Power DC Power in or out if unit is powered using DC
in jack.
Configuring for RS-422
To configure the M7 modem for RS-422 operation, use the ATIO 4 command.
You must order the RS-422 option for this to work. The M7’s hardware is
identical to the RS-485 version, with the exception of two internal loop-back
resistors.
Raveon’s RS-422 /O circuit uses 3.3V logic to drive the lines, and the RS422
pins are ESD protected to ±15kV and 7kV human body model
.
RS-422 installations typically have a termination resistor across the n and the
Out lines. A value of 150 ohms should work in most applications.
Bias and Termination Resistors
M7 transceivers with the RS-422 option have receivers with built-in bias
resistors, offering the network a true “1/8 unit load”. n most allocations, these
internal bias resistors are sufficient, and an external bias resistor is not
required.
Serial out data comes out pins 3 and 7. Serial input data comes in via pins 4
and 8. Connect pin 5 to earth ground.

Company Confidential 18 Raveon Technologies Corp.
4 8 Low Power Mode (LPM)
The M7 modem, has the ability to be put into a low power mode (LPM). n
LPM the modem draws much less current from the DC input. n LPM, the
internal radio in the M7 is disabled, as well as certain current-consuming
hardware circuits. The ability of the M7 to go into LPM is set with a
configuration bit, using the ATSM 1 command. ATSM 1 configures the M7 to
monitor the DTR input line, and enter the LPM mode whenever DTR is
negated. f the DTR signal is asserted, the M7 modem will operate normally.
The ATSM 2 command forces the M7 modem into the low-power mode. n
the Low Power mode, the M7’s radio circuits are off, but it will still respond to
serial commands and it will still transmit characters over the air, albeit with
some latency as it has to power-up the radio each time it wishes to transmit.
The ATSM 0 command returns the M7 modem into the normal-operating
mode with the receiver and transmitter operational.
The M7 can switch between LPM and normal mode using the DTR line, and it
switches much faster than using the DC power supply. The M7 takes about
½ of a second to power on when DC is applied, but can switch between
normal and LPM in about 25milliseconds.
The factory default value for the ATSM setting is 0. When ATSM is a zero,
the M7 will not ever enter the LPM mode, and the DTR input signal is ignored.
DTR negated means it is a negative voltage. A voltage less than zero volts
applied to DTR will turn the M7 off by putting it into LPM.
To assert the DTR signal (turn the modem on), the DTR line must be high (>
3V). DTR is an input to an RS-232 transceiver C. t is ESD protected, and
is safe for voltages from –20V to +20V input.

Company Confidential 19 Raveon Technologies Corp.
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. n normal operation, the user
sends data into the TxD pin of the user port, 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 user port. This is the default operating condition of the RF
modem. No special characters, hardware control lines, or timing is required
to operate the M7 modem.
There is also a “Command Mode” used to program and configure the M7. n
the Command Mode, the M7 modem accepts commands via the serial port
TxD pin. The commands can be used to change certain internal parameters
of the M7 modem as well as to read-out the current configuration and
diagnostic statistics.
5 2 Command Mode
The M7 modem may be put into a “Command Mode”, by entering a sequence
of three plus characters (+++). To keep the M7 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. f either pause is
missing, the modem will not enter the command mode.
Using serial communications software such as HypterTer inal, 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:
The default sequence for entering into AT Command Mode: The default sequence for entering into AT Command Mode:
The default sequence for entering into AT Command Mode:
1. No characters sent for ½ a second.
2. Input three ( ) plus characters (“+++”) within ½ of a second.
. No characters sent for ½ a second.
When the M7 modem first enters the Command Mode, it sends the phrase
“M7” out it serial port, and then an “OK” sequence. The “OK” sequence is a
sequence of 4 characters:
An “O”, “K”, <CR>, and <LF> characters
(<CR> = ASC 0D, <LF> = ASC 0A)
5 3 Setting a Parameter
To set a parameter in the M7 modem, enter the Command Mode as
described above. Then enter the proper AT command, a space, the
parameter, and then a carriage return. For Example, to set the address of the
M7 modem to 1234, enter the following command:
ATDT 1234 <CR>.

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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 ASC decimal format.
A <CR> <LF> (<CD> = ASC 0D, <LF> = ASC 0A).
An “O”, “K”, <CR>, and <LF> sequence.
For example, if the user enters the command to read the M7’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.
5 5 Radio Manager
Radio Manager is a Windows XP/Vista software application that is used to
configure Raveon's data radio products. t is compatible with all Raveon radio
models, and provides configuration management, as well as programming
assistance, diagnostic information, and a helpful "band scope" feature.
Radio Manager features:
• Supports all Raveon Radios (M3, M5, M7 and M7 GX series)
• An easy to use graphical interface
• Si plified editing of a radio's configuration
• Configurations ay be stored to a file or retrieved fro a file
• Intelligent para eter verification to help configure technical para eters
• On-line help
• Built-in ter inal ode
• "Auto-Detect Radio" feature searches through possible serial port settings
• Band Scope feature graphically displays on and off channel signal levels
You can use Radio Manager in lieu of learning all of the M7’s co ands and
progra ing protocol. In ost situations, it is very useful for configuring the M7.
There are certain very advanced configurations that will require anual