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Raveon RV-M8G Technical Manual

Gps transponder/radio modem
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RV-M8G
GP S T ra nspo nde r / Radio Modem
Te c hn ical Ma nu al
Version D1
June 2019
Raveon Technologies Corporation
2320 Cousteau Court
Vista, CA 92081
www.raveon.com
Company Confidential
1
Raveon Technologies Corp.

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Summary of Contents for Raveon RV-M8G

  • Page 1 RV-M8G GP S T ra nspo nde r / Radio Modem Te c hn ical Ma nu al Version D1 June 2019 Raveon Technologies Corporation 2320 Cousteau Court Vista, CA 92081 www.raveon.com Company Confidential Raveon Technologies Corp.

  • Page 2: Table Of Contents

    Features............................5 Specifications ....................9 3.1. General ................... Error! Bookmark not defined. 3.2. Transmitter Specifications (RV-M8G-xx)......... Error! Bookmark not defined. 3.3. Receiver Specifications ..............Error! Bookmark not defined. 3.4. Interface Specifications ..............Error! Bookmark not defined. Electrical Inputs and Outputs ................. 9 4.1.
  • Page 3 Symptom: Receive light blinks, but no data is received ..............48 Symptom: Long delay before transmitting ................... 49 Symptom: Cannot enter Command Mode ................... 49 Symptom: Modem appears dead......................49 Symptom: Repeater will not repeat..................... 49 Mechanical ....................50 Company Confidential Raveon Technologies Corp.

  • Page 4: General Information About The Rv-M8

    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. 1.3. Safety / Warning Information Blasting Caps and Blasting Areas...

  • Page 5: Overview

    The M8G can be configured in either a GPS tracking mode or a data modem mode. The command-line interface is similar to Raveon’s other data radio products, and configuring the mode is very easy. The M8G also has a digital input pin that may be used to electrically change modem types between data modem and paging modes.
  • Page 6 1. The TDMA epoch (TDMATIME command) 2. The TDMA slot time for each radio. (SLOTTIME command) The individual M8G transponders are configured for their:\ 3. Report rate (TXRATE command) 4. Their individual ID (MYID command) Company Confidential Raveon Technologies Corp.
  • Page 7 UHF radio is used. The table below summarizes the 4 standard GPS modes, as well as listing other specialized operation modes that the M8G GX supports. GPS mode 2 is the factory default mode. Company Confidential Raveon Technologies Corp.
  • Page 8 AFTER the GPS x command is issued.  Serial port output message format  Echo characters (ATEx command)  NMEAOUT  NMEARATE  Hardware flow control  Serial port baud rate  Data mute setting  WMX protocol Company Confidential Raveon Technologies Corp.

  • Page 9: Specifications

    Receive and transmit audio output for factory test. Do not connect to anything. If the AUDIO option is used, this pin is the receive audio output. STAT2 Output to drive external dual-color LED. Do not connect the LED to ground or DC voltage. Company Confidential Raveon Technologies Corp.

  • Page 10: Heatsinking

    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. Company Confidential Raveon Technologies Corp.

  • Page 11: User Serial Port Commands

    (receive only 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) Company Confidential Raveon Technologies Corp.

  • Page 12: Setting A Parameter

    M8G 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, Company Confidential Raveon Technologies Corp.

  • Page 13: Exiting The Command Mode

    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. Company Confidential Raveon Technologies Corp.

  • Page 14: Command Mode Commands

    Range: See product See product data Transmit Frequency – Program the transmit frequency for ATFT data sheet. For MURS sheet. this channel. Enter in Hz or in MHz. The frequency will products, frequency M7 GX Technical Manual Raveon Technologies Corp.
  • Page 15 When set to 0, the M8G will not go into LPM, Range: 0, 1, 2 regardless of the state of the DTR pin. When set to 2, the modem is forced into a low-power mode, disabling the M7 GX Technical Manual Raveon Technologies Corp.
  • Page 16 Privacy Security Key Code. Set the privacy key for this device. It must be the same key as used on all other 2-16 ASCII “RAVEON” KEYPHRASE Raveon products in your system. It secures radio characters. transmissions from unauthorized reception. ATEN parameter to the type of encryption to use. MODEL...

  • Page 17: Data Modem Mode Related Commands

    RF Carrier Required – When enabled, there must be RF energy on the channel for the modem to output data. 0 (no RF ATRF Range: 0, 1 required) Streaming data mode only. 1-RF required. 0=ignore RF energy when receiving. M7 GX Technical Manual Raveon Technologies Corp.

  • Page 18: Paging Receiver Related Commands

    X is numeric feature code: 3 = GPS Echo. All data from the internal GPS rx is echoed out the user serial port. 4 – Proximity Alert. Y= 0 for off, 1 for on. M7 GX Technical Manual Raveon Technologies Corp.
  • Page 19 GPS Report Rate. Set number of seconds between GPS reports. This is also the rate at which the TXRATE 0 - 9999 internal GPS will measure position, speed, etc. Even if the unit is not moving, the GPS periodically M7 GX Technical Manual Raveon Technologies Corp.
  • Page 20 If a particular bit is a 1, then it will TRIGEX trigger a report when it changes. The input bit must 0-FF also be enabled with the TRIGBITS. This is a HEX number. Bit 0 is IN0, bit 1 is IN1… M7 GX Technical Manual Raveon Technologies Corp.

  • Page 21: Factory Default Settings

    7.4. Factory Default Settings RV-M8G-xx (Transceiver) For the UHF M8G, model RV-M8G-UC, the main factory defaults are: General Settings Primary Protocol: (ATMT 0) ....... Packet Data Alternate Protocol: (ATMA 3) ......None WMX (WMX 0) ..........OFF Security KEY ............. RAVEON TDMA and GPS Transponder Settings TDMATIME: ............
  • Page 22 I/O connector. The serial I/O connector is 3.3V digital logic, so you may need a digital-RS232 voltage converter. Raveon’s Tech Series enclosures have these built, so you may plug the RV-M8G into the “S” interface of a Tech Series to do the RS232 conversion. USB and RS485 are also available in the Tech Series.

  • Page 23: Programming Channels And Frequencies

    M8G. It must be the same as the KEYPHRASE programmed into all the other M8G transponders in your system. The factory default KEYPHRASE is RAVEON, call capitols. SLOTNUM This will change the TDMA slot assignment, leaving the ID (MYID) unchanged.
  • Page 24 M8G in GPS mode 2 is shown below: -GX GPS mode RavTrack PC Serial Protocol : Raveon $PRAVE Serial port baud rate: 38400 N 1 Position TX Interval : 60seconds (will TX when still.) Proximity Alert...
  • Page 25 GPS info GPVTG Notes: *1. –LX units typically do not have a GPS receiver in them. They receive position reports over the air from other units, but do not transmit position or status. M7 GX Technical Manual Raveon Technologies Corp.
  • Page 26 The logic inside of the M8G shown is tested at a user- programmable rate, called the TXRATE. The TXRATE is the time interval between M8G position/status radio transmissions. Set to TXRATE and IDLERATE both to 0 to totally disable position reporting. Company Confidential Raveon Technologies Corp.
  • Page 27 GPS Position Transmission Trigger Diagram Company Confidential Raveon Technologies Corp.
  • Page 28 RV-M8 GX: RS-232 Pin Function 4 - DTR Input 0 7 - RTS Input 1 3 - TXD Input 2 5 - Ground There are 3 commands that must be configured to use the digital inputs: Company Confidential Raveon Technologies Corp.
  • Page 29 1 if it changes state, or 0 if it did not change state. For example, to configure the unit to transmit position when bit 0 changes state, issue these commands: Company Confidential Raveon Technologies Corp.
  • Page 30 Serial port transmit data is disbled because GPS mode 4 is normally used to connect the a hand-held or mobile GPS display to the M8G. The M8G will send $GPWPL messages to the GPS to display the location of Company Confidential Raveon Technologies Corp.

  • Page 31: Serial Port Baud Rate

    Output 0 disable the device from outputting any message when a position report is received. $PRAVE Raveon Position & Satus. Output 1 This message is sent out of the M8G when it is operating in the GPS 2 mode. This message is used by third-party and PC applications for tracking location and status information.
  • Page 32 OK to leave the factory-set code. If it is important that the M8G transmissions and system be secure, Raveon suggest you program the KEY to be a random sequence of letters and numbers at least 8 digits long.

  • Page 33: Hexadecimal Numbers

    4 bit data in the following way: Hexadecimal Table Hex # Binary Hex # Binary Hex # Binary Hex # Binary 0000 0100 1000 1100 0001 0101 1001 1101 0010 0110 1010 1110 0011 0111 1011 1111 Company Confidential Raveon Technologies Corp.

  • Page 34: Broadcast Transmissions

    Effective Unit Address. The Effective Unit Address is compared to the Effective Destination Address, and if the two are identical, the data will be received. Note: Logically 1 = 1, 0 = 0, 0 = 0, 1 = 0 Company Confidential Raveon Technologies Corp.

  • Page 35: Addressing Examples

    FFFF requires that all digits in the address match. . Example 3 (able to receive a data from a group, 1230 – 123F) Sending to Destination Address = 1236 Receiving M8G Unit Address = 1234 Receiving M8G Address Mask = FFF0 Company Confidential Raveon Technologies Corp.
  • Page 36 Following is a list of the NMEA messages that are available (as of revision C2 of the Firmware). NMEA Bit Number Bit Mask (zero based) (hex format / decimal) Message 0×001 / 1 0×002 / 2 0×100 / 256 !AIVDM 0x200 / 512 Company Confidential Raveon Technologies Corp.

  • Page 37: Using The M8G - Packet Data Mode

    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 38: Store-And-Forward Repeating

    Repeater Table, each with a different range of IDs that should be repeated. Important: The Unit ID of the repeater must be unique in the system. No other radio modem in the system can have the ID of the repeater. Company Confidential Raveon Technologies Corp.
  • Page 39 C, and is configured to repeat all messages to/from G. The following table illustrates one possible way the M8G could be programmed to accomplish this type of system. Company Confidential Raveon Technologies Corp.
  • Page 40 In other words, all transmissions from will be repeated by B. To view the Repeater Table, use the ATX command, with no parameter. To view a single entry in the table, use the ATXn, where n=1, 2, 3, or 4. Company Confidential Raveon Technologies Corp.

  • Page 41: Debug Related Commands

    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 M8G wireless modem has a number of provisions in it to make store-and-forward repeating work smoothly.
  • Page 42 If it does, it answers with a response transmission, containing its ID and the signal strength of the reception. . STAT Display statistics of how the modem is working. Enter STAT 1 to see GPS tracking related statistics. Company Confidential Raveon Technologies Corp.

  • Page 43: M8G 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 44: Tune-Up And Alignment

    All RF modems in the 2 = 2400 7 = 5142 2L network must use the same over-the-air baud rate. 3 = 4800 8 = 9600 4L 4 = 8000 4L 9 = 2000 2L Company Confidential Raveon Technologies Corp.

  • Page 45: Center Frequency

    1. Set-up a service monitor to monitor the FM deviation of the transmitted signal on an oscilloscope. The frequency response of the demodulated FM signal must be greater than 10Hz to 5kHz without any de-emphasis. Company Confidential Raveon Technologies Corp.

  • Page 46: Rx Carrier Detect

    If RF is present, but it is voice or some non-data single, then the CD pin is negated. Mode 2 - CD ON In this mode, the CD pin is always asserted. Company Confidential Raveon Technologies Corp.
  • Page 47 The CD signal will normally stay low (near 0 volts), and when the Output Data Framing takes place, it will go high (about 3V). If Output Data Framing is enabled, any other Carrier Detect and flow control output configuration is ignored. Company Confidential Raveon Technologies Corp.

  • Page 48: 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 49: Symptom: Long Delay Before Transmitting

    RS-232 connector is un plugged. Symptom: Repeater will not repeat. Verify the repeater’s Unit ID is unique. An RV-M8G configured to be a repeater Solution will not repeat messages it originated. If other units in the system have the same ID as the repeater, the repeater will not repeat them because it thinks the it originated the transmission.

  • Page 50: Mechanical

    15. Mechanical A drawing is shown below. Company Confidential Raveon Technologies Corp.
  • Page 51 Limited One Year Warranty If within 12 months from date of purchase, this Product fails conforms to Raveon Technologies Corporation’s (the Company) published specifications for the model purchased due to a defect in material or workmanship, Raveon Technologies Corporation will repair or replace it, at Raveon’s sole discretion.
  • Page 52 Warranty service is available by mailing postage prepaid to: Raveon Technologies Corporation 2320 Cousteau Court Vista, CA 92081 - USA To obtain warranty service, include a copy of the original sales receipt or invoice showing the date, location, and price of purchase. Include a written description of the problem with the product, a phone number and name of person who may be contacted regarding the problem, and the address to where the product should be returned.

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