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Raveon RV-M7 Technical Manual

Data radio modem
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RV-M7
D at a Radio Modem
T e ch n ic a l M an ua l
Version C3
March 2010
(IP65 Weatherproof Version)
Raveon Technologies Corporation
990 Park Center Drive, Suite C
Vista, CA 92081
www.raveontech.com
1
Company Confidential
Raveon Technologies Corp.

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  • Page 1 D at a Radio Modem T e ch n ic a l M an 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 Raveon Technologies Corp.

  • Page 2: Table Of Contents

    Table of Contents General Information about the RV-M7 ............5 1.1. Congratulations!........................... 5 1.2. NOTICE ............................5 1.3. Safety / Warning Information ....................... 5 1.4. Safety Training information: ......................6 1.5. FCC Compliance Information....................... 7 Overview......................8 2.1. Features............................8 Specifications....................9 3.1.
  • Page 3 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 Mechanical ....................62 Company Confidential Raveon Technologies Corp.
  • Page 4 Company Confidential Raveon Technologies Corp.

  • Page 5: General Information About The Rv-M7

    WARNING - 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.

  • Page 6: Safety Training Information

    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 ID: SRS-RV-M7-UC Raveon Technologies Corporation...

  • Page 7: Fcc Compliance Information

    Reorient or relocate the receiving antenna. • Increase 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 Raveon Technologies Corp.

  • Page 8: Overview

    RS-232 serial input and output. Programmable serial baud rates up to 57600. • Programmable over-the-air data rates for long-range or high-speed • Automatic key of transmitter on data. • RF carrier-detect is not required receiving. No squelch setting required. Company Confidential Raveon Technologies Corp.

  • Page 9: Specifications

    Weight ......................... 6 ounces (0.17kg) DC input voltage ..........................10-16V DC Internal fuse ....3A mini blade. Littlefuse part number 0297003 or Raveon part, number 1X726-3 FCC ID 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.

  • Page 10: Model Numbers

    = Channel Spacing (blank=12.5kHz, W=25kHz) = 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 VHF (RV-M7-V…) UHF (RV-M7-U…) Letter 136-155MHz 403-434MHz 150-174MHz...

  • Page 11: Electrical Inputs And Outputs

    Pin 9 and ground to pin 5 of the 9-pin I/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.

  • Page 12: Wx Weatherproof Version

    The –WX version of the product is functionally the same as the standard version, except it is IP65 rated for weather resistance. It has special water- resistant connectors on it, and a sealed enclosure to keep moisture out of the unit. Company Confidential Raveon Technologies Corp.

  • Page 13: Power Cord

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

  • Page 14: Rs232 Serial Cable For -Wx Version

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

  • Page 15: Optional Eia-485/Rs-485 Serial I/O

    ATIO 3. If 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 Raveon Technologies Corp.

  • Page 16: Bias And Termination Resistors

    Raveon’s RS-485 I/O circuit uses 3.3V logic to drive the lines, and the RS485 pins are ESD protected to ±15kV and 7kV human body model Input current is less than 150uA. Output current when not driving the line is less than 50uA.

  • Page 17: Rs422/Eia-422 Serial I/O Connector

    RS-485 version, with the exception of two internal loop-back resistors. Raveon’s RS-422 I/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 In and the Out lines.

  • Page 18: Low Power Mode (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 IC. It is ESD protected, and is safe for voltages from –20V to +20V input. Company Confidential Raveon Technologies Corp.

  • Page 19: User Serial Port Commands

    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>. Company Confidential Raveon Technologies Corp.

  • Page 20: Reading A Parameter

    Radio Manager Radio Manager is a Windows XP/Vista software application that is used to configure Raveon's data radio products. It is compatible with all Raveon radio models, and provides configuration management, as well as programming assistance, diagnostic information, and a helpful "band scope" feature.

  • Page 21: Config Button

    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 Raveon Technologies Corp.

  • Page 22: Exiting The Command Mode

    To disable password protection, enter: Password 0 <CR> Note: If the user-interface is password protected, and the Config button on the M7 is pressed, for security reasons, the encryption phrase is automatically erased. Company Confidential Raveon Technologies Corp.

  • Page 23: Command Mode Commands

    See product data this channel. Enter in Hz or in MHz. The frequency will product sheet. For MURS products, automatically be saved in non-volatile memory (flash) for this frequency cannot be changed. data sheet. current channel number. Company Confidential Raveon Technologies Corp.
  • Page 24 . Set or show the RF power output setting. Value is in percent, from 0% to 100%. Use and RF wattmeter 0-100 to confirm the power setting, and adjust the % accordingly to obtain the desired RF power level. Company Confidential Raveon Technologies Corp.
  • Page 25 0 = Go back to normal transmitting data. The type of data sent is set in the 1 = Random parameter. Entering a <CR> will terminate the transmission. 3 = 1010… at ¼ baud rate Company Confidential Raveon Technologies Corp.

  • Page 26: Other Non-At Commands

    Show/display an overview of the radio’s SHOW None configuration. 5.11. Factory Default Settings For the UHF M7, model RV-M7-UC, the main factory defaults are: Channel 1 ............464.500 MHz Over-the-air baud rate:........4800 baud, 2-level Company Confidential Raveon Technologies Corp.
  • Page 27 Channel number selected ......... 1 ID (ATMY) ............1234 Net Mask (ATMK)..........FFFF For the VHF M7, model RV-M7-VB, the main factory defaults are: Channel 1 ............151.625 MHz Over-the-air baud rate:........4800 baud, 2-level Serial port............RS-232, 9600baud, N/8/1 Hardware flow control ........

  • Page 28: Using The M7 Modem - Packet Mode

    If the channel is noisy or the signal is weak, there may be bit-errors in the data, or the M7 may output additional noise data. User applications must (and often do), take this into account, and thus can operate with weaker signals and have longer communication range. Company Confidential Raveon Technologies Corp.

  • Page 29: Setup

    From the factory, the modems are configured and shipped ready-to-use. Out of the box, they will communicate on the default radio channel using the factory defaults. In general, the parameters you may want to modify will be: Company Confidential Raveon Technologies Corp.

  • Page 30: Programming Channels And Frequencies

    While the modem is transmitting, the user may continue to send more data into the M7. Because the buffers in the M7 are full-duplex, the serial port data rate and the over-the-air data rates are independent. The serial port baud-rates may Company Confidential Raveon Technologies Corp.

  • Page 31: Flow Control

    ATR3 xxx command, where xxx is in milliseconds. ATR3 2 (2mS) is a good setting if you are configuring the M7 for use in a polled SCADA system. Company Confidential Raveon Technologies Corp.

  • Page 32: Busy-Channel Lock Out

    1-255, then the group feature is enabled, and the group number will be the group specified in the ATGP command. When enabled, the M7 will only communicate with other M7s that have the same Group Number. Company Confidential Raveon Technologies Corp.

  • Page 33: Hexadecimal Numbers

    IDs that start with 0xxx. Broadcast Transmissions The double FF is used to identify a broadcast packet. A transmission with a two digit FF in the first two positions of the destination ID, or in the last two positions Company Confidential Raveon Technologies Corp.

  • Page 34: The Address Mask

    Address yyyy Destination Address xxxx M7 has “AND” them “AND” them Address Mask together together zzzz Compare the two results from these two ANDs Output the data via serial port if the two results were identical Company Confidential Raveon Technologies Corp.

  • Page 35: Addressing Examples

    The M7 modem uses a traditional Carrier Sense Multiple-Access (CSMA) algorithm with randomized re-try time slots to determine when to re-transmit packets that must be re-sent. The duration between re-tries increases as the number of attempts increases. Company Confidential Raveon Technologies Corp.

  • Page 36: Store-And-Forward Repeating

    Automatic Repeater Configuration The easiest way to enable store-and-forward repeating is the use the REPEAT 1 command. REPEAT 1 will turn on the store-and-forward feature, and configure it Company Confidential Raveon Technologies Corp.

  • Page 37: Manual Configuration Of The Repeat Feature

    In the example shown in Figure 3 above, M7 is will communicate with all other H, and F. Because modems in the system. It can directly communicate with E, D, C, and G. of propagation limits, it cannot communicate reliable to Company Confidential Raveon Technologies Corp.
  • Page 38 All packets from units with MYID 1020 (C) sent to 1000 will be D, E, F, G, repeated by this unit. It will not repeat messages from because their Unit IDs are not in the Repeat Source repeater table. Company Confidential Raveon Technologies Corp.
  • Page 39 0. For example, to disable entry 1, use the ATX1 0 0 0 0 command. There can be an issue with regard to store-and-forward repeating and busy channels, particularly on polled systems. Raveon’s M7 wireless modem has a number of provisions in it to make store-and-forward repeating work smoothly.
  • Page 40 ID for each M7 modem in a network that uses repeaters. Company Confidential Raveon Technologies Corp.

  • Page 41: Using The M7 Modem - Streaming Mode

    Baud Rate Selection In Streaming Mode, the user data may still enter the modem at any baud rate, as set with the ATBD x command. The M7 modem will buffer the data and send it Company Confidential Raveon Technologies Corp.

  • Page 42: Bit Errors

    If large amounts of data will be sent with the M7, and the serial port is operated at a faster data rate than the over-the-air rate, it may be possible to overflow the internal data buffer. To ensure the transmit buffer does not overflow, enable and Company Confidential Raveon Technologies Corp.

  • Page 43: Setting The Over-The-Air Data Rate

    9600bps (R2=5) 25kHz RV-M7-UC-W 19200bps (R2=6) (will not work with Radio Type 5) 12.5kHz or 25kHz RV-M7-UC-N, RV-M7-UC-W, RV-M7- 5142bps (R2=7 UC-S 12.5kHz or 25kHz RV-M7-UC-N, RV-M7-UC-W 9600bps (R2=8) Changing the over-the-air data rate will change the sensitivity of the receiver.
  • Page 44 Other data rates of 0(800bps), 2(2400bps), 3(4800bps), and 7(9600bps) will work, but have a less optimal bit-error-rate vs. receive sensitivity. RV-M7-UC-W (wide-band version) For high-speed operation, set R2 to 5 (9600 baud). For best range (longest distance), set R2 to 1 (1200 baud) Other data rates of 0(800bps), 2(2400bps), 3(4800bps), 7(9600bps), and 6(19,200bps) will work, but have a less optimal bit-error-rate vs.

  • Page 45: Installation

    If you are a business, commercial, or institutional organization, you can go directly to: http://wireless.fcc.gov/services/ind&bus In either case, you will be shown the regulations and the information you will need to gather before you get started - your desired operating frequencies, Company Confidential Raveon Technologies Corp.

  • Page 46: Debug Related Commands

    Display statistics of how the modem is working. ATST 1 Display statistics of how the modem’s GPS is working (if installed). AT$5 Display RSSI. It will scroll the reading until another character comes in the serial port. Company Confidential Raveon Technologies Corp.
  • Page 47 Begin counting and displaying the packet counters every minute ATPE 1 Reset the packet counters back to zero ATPE 2 Stop counting and displaying packet counters Upon power up, the packet counter feature is always disabled. Company Confidential Raveon Technologies Corp.

  • Page 48: M7 Diagnostic Provisions

    Compile date and time – Returns the data and the time that the Date and time firmware was compiled. Run Time – Returns the amount of time that the modem has been Run time display powered up and running. screen Reset all statistics counters Company Confidential Raveon Technologies Corp.
  • Page 49 Statistic Read – Returns numeric values, comma separated, of all Run time display ST10 statistics as described in the ST command. screen Company Confidential Raveon Technologies Corp.

  • Page 50: Atst Command

    (speed of the main Operating System, in Hz. Typical 8000-30000. ) OS Speed (the DAC value that biases the VCO in the radio. 0-1024 = 0-3.3V) VCO Bias hhhh (hexadecimal representation of an internal configuration word.) Config Company Confidential Raveon Technologies Corp.

  • Page 51: Atst3 Command

    12.2. Calibration Commands The following AT commands are used to calibrate the M7. Do not ever change these unless you have been factory trained to do so. Company Confidential Raveon Technologies Corp.

  • Page 52: Center Frequency

    2. Key the transmitter into a 50 ohm load using the ATTD 3 command. The unit will now transmit, and send a digital 0 continuously. This should be +2.0kHz in frequency for narrow-band radios (12.5kHz spaced channels) and +4.0kHz for wide-band (25kHz channels). Company Confidential Raveon Technologies Corp.

  • Page 53: Tx Modulation Balance

    RF carrier. It is compared with a pre-set value, and if it is above this value, Carrier Detect is asserted. The pre-set value may be change with the ATRA command. Company Confidential Raveon Technologies Corp.

  • Page 54: Skyline Compatibility

    The M7 RF modem has built-in compatibility with a radio modem made by Sonik Technologies, Vytek Wireless, and Cal Amp called the SkyLine. In most applications, Raveon’s M7 modem can communicate with SkyLine modems, provided the M7 is properly configured. There are two versions of the Skyline, a wide-band version running at 9600 bps over the air, and a narrow-band version running at 5142bps over the air.
  • Page 55 Gain antennas always have “patterns” of gain. It is important you understand the pattern of your antenna. Omni directional antennas will receive from almost any angle, 360 degrees around them. Omni Antenna Directional Antenna Company Confidential Raveon Technologies Corp.

  • Page 56: Appendix A. Serial Port Hardware

    The CTS may be asserted when the serial-port data rate is greater to or equal to the over-the-air rate. For example, if the over-the-air data rate is set to 2400 baud, and the user Company Confidential Raveon Technologies Corp.
  • Page 57 M7 modem into its SLEEP mode. With DTR enabled, anytime the DTR line is a logic 0, the M7 will be operating normally. With DTR enabled, anytime the DTR line is a logic 1, the M7 will go into a SLEEP mode, drawing much less DC power. Company Confidential Raveon Technologies Corp.

  • Page 58: Null Modem Without Handshaking

    CTS line to make this possible. The only type of communication which is allowed on such a null modem line is data-only traffic on the cross connected Rx/Tx lines. Company Confidential Raveon Technologies Corp.

  • Page 59: Null Modem With Full Handshaking

    Both the RTS and DTR outputs can be used to send flow control information to the other device. This makes it possible to achieve high communication speeds with this type of null modem cable, provided that the system has been designed for it. Company Confidential Raveon Technologies Corp.

  • Page 60: Troubleshooting

    Try all possible baud rates, and see if one of them works with the modem. Alternately, remove the rear cover of the modem, and press the CONFIG Company Confidential Raveon Technologies Corp.

  • Page 61: Symptom: Long Delay Before Transmitting

    LEDs have been disabled via the ATL0 command. Solution Verify the internal fuse OK. There is an internal fuse in the RV-M7, protecting it from reverse-voltage and electrical failures. If the power LED does not blink or come on when DC is applied, check the fuse and replace it with the same type 3-amp mini fuse, and try again.

  • Page 62: Mechanical

    17. Mechanical Company Confidential Raveon Technologies Corp.
  • Page 63 If within two years from date of purchase, this product fails due to a defect in material or workmanship, Raveon Technologies, Incorporated will repair or replace it, at Raveon’s sole discretion. This warranty is extended to the original consumer purchaser only and is not transferable.

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