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Raveon RV-M8S Technical Manual

Data radio modem
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RV-M8S
Da ta Radio Modem
T ech n ic a l Man ua l
Version B4
January 2018
Raveon Technologies Corporation
2320 Cousteau Court
Vista, CA 92081
www.raveontech.com
Company Confidential
1
Raveon Technologies Corp.

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Summary of Contents for Raveon RV-M8S

  • Page 1 RV-M8S Da ta Radio Modem T ech n ic a l Man ua l Version B4 January 2018 Raveon Technologies Corporation 2320 Cousteau Court Vista, CA 92081 www.raveontech.com Company Confidential Raveon Technologies Corp.

  • Page 2: Table Of Contents

    Table of Contents General Information about the RV-M8S ............4 1.1. Congratulations! ........................... 4 1.2. NOTICE ............................4 1.3. Safety / Warning Information ....................... 4 1.4. OEM Use ............................. 6 Overview ......................7 2.1. Features ............................7 Specifications ....................8 3.1.
  • Page 3 Symptom: Receive light blinks, but no data is received ...............45 Symptom: Long delay before transmitting ...................46 Symptom: Cannot enter Command Mode ...................46 Symptom: Modem appears dead......................46 Symptom: Repeater will not repeat......................46 Mechanical ....................48 Company Confidential Raveon Technologies Corp.

  • Page 4: General Information About The Rv-M8S

    Authorized Service Center or Raveon Technologies Service Department. 1.3. Safety / Warning Information WARNING - DO NOT operate the RV-M8S radio modem when bystanders are near 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.”...
  • Page 5 “Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : 1) l’appareil ne doit pas produire de brouillage; Company Confidential Raveon Technologies Corp.

  • Page 6: 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. This module is not FCC approved. ( Check if this statement is needed!(??)) Company Confidential Raveon Technologies Corp.

  • Page 7: 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 8: Specifications

    Frequency Deviation ......RF Bandwidth ........20 MHz no-tune 8 kHz Occupied bandwidth ......< -70dBc TX Spurious outputs ......Per FCC Occupied Bandwidth ......FCC Emissions Designator ....8K20F1D Better than ±1.5ppm {2.5ppm} Frequency Stability ......Company Confidential Raveon Technologies Corp.

  • Page 9: Receiver Specifications

    Serial Interface Port 20-pin male header IO Voltage Levels 3.3V digital logic. < 1000pF load capacitance. RX and TX data Transparent Async. Word length 7 or 8 bits Format N, O, or E RF Connector MMCX Company Confidential Raveon Technologies Corp.

  • Page 10: Leds

    RTS input for serial flow control. RSSI Receiver signal strength indicator To be determined. Raveon may use these pins for test functions and certain data-radio features. 3.8. Low Power Mode (LPM) The M8 modem, has the ability to be put into a low power mode (LPM). In LPM the modem draws much less current from the DC input.
  • Page 11 The factory default value for the ATSM setting is 0. When ATSM is a zero, the M8 will not ever enter the LPM mode, and the DTR input signal is ignored. Company Confidential Raveon Technologies Corp.

  • Page 12: 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 M8 modem to 1234, enter the following command: ATDT 1234 <CR>. Company Confidential Raveon Technologies Corp.

  • Page 13: Reading A Parameter

    4.5. 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 14: Config Button

    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 M8 modem once the Command Mode is exited. Company Confidential Raveon Technologies Corp.

  • Page 15: 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 M8 is pressed, for security reasons, the encryption phrase is automatically erased. Company Confidential Raveon Technologies Corp.

  • Page 16: Command Mode Commands

    See product Transmit Frequency – Program the transmit frequency for Range: See product data data sheet. this channel. Enter in Hz or in MHz. The frequency will sheet. For MURS products, Company Confidential Raveon Technologies Corp.
  • Page 17 . 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 18 M8’s low-power operation. When set to 0, the Range: 0, 1, 2 M8 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 Company Confidential Raveon Technologies Corp.

  • Page 19: Other Non-At Commands

    Remote Procedure Request. Used to request execution of a command on a remote mode (over the air). See M8 System Protocol manual for information on using this feature. Show/display an overview of the radio’s SHOW None configuration. Company Confidential Raveon Technologies Corp.

  • Page 20: Factory Default Settings

    Channel 1 (-UA model) ........413.100 MHz Over-the-air baud rate: ........4800 baud, 2-level Serial port ............9600baud, N/8/1 Hardware flow control ........Off RF Power Output ..........20% (1W) Channel number selected ......... 1 ID (ATMY) ............1234 Company Confidential Raveon Technologies Corp.

  • Page 21: Using The M8S Modem - Packet Mode

    The M8 will continue to receive data, down into the noise- floor of the radio. If the channel is noisy or the signal is weak, there may be bit-errors in the data, or the M8 may output additional noise data. User Company Confidential Raveon Technologies Corp.

  • Page 22: Setup

    Using the AT commands, change any of the default operating parameters that must be modified. From the factory, the modems are configured and shipped ready-to-use. Out of the box, they will communicate on the default radio Company Confidential Raveon Technologies Corp.

  • Page 23: Programming Channels And Frequencies

    When a full packet of data has been collected into the internal buffer of the modem, or when there is a pause in the data, the modem will automatically key its transmitter, and send the data over the air. Company Confidential Raveon Technologies Corp.

  • Page 24: Serial Port Baud Rate

    ATTT setting. Key-On_Data When serial data is entering the M8’s RS-232 port, the M8 looks for pauses in the data as indication that it is time to send a packet of data over the air. The Company Confidential Raveon Technologies Corp.

  • Page 25: Busy-Channel Lock Out

    The Group Number is set with the ATGP xx command, where xx is the group number. ATGP 0 disables group numbering and is the default way the M8 radio modem works. If the Group Number is set to any non-zero number Company Confidential Raveon Technologies Corp.

  • Page 26: Hexadecimal Numbers

    1000, 1001, 1002, etc… Then the 1000 series group will only hear 1000 series M8’s and the units that have IDs starting with 0xxx will only hear other radios with IDs that start with 0xxx. Company Confidential Raveon Technologies Corp.

  • Page 27: 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 28: 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 M8 Unit Address = 1234 Receiving M8 Address Mask = FFF0 Company Confidential Raveon Technologies Corp.

  • Page 29: Error Correction

    If after 5 times, the data does not get through, then there probably is something seriously wrong with the channel or system. The retried-transmissions are randomly spaced at intervals between approximately 200mS and 400mS, increasing by 50mS for each attempted Company Confidential Raveon Technologies Corp.

  • Page 30: Store-And-Forward Repeating

    Data is transmitted over-the-air in bursts called packets, and each packet has the Unit ID of the M8 that sent the data and the Destination ID of the unit that the data is intended for. Company Confidential Raveon Technologies Corp.
  • Page 31 C, and is configured to repeat all messages to/from G. The following table illustrates one possible way the M8s could be programmed to accomplish this type of system. Company Confidential Raveon Technologies Corp.
  • Page 32 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 33 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 M8 wireless modem has a number of provisions in it to make store-and-forward repeating work smoothly.

  • Page 34: Using The M8S Modem - Streaming Mode

    6.2. 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 M8 modem will buffer the data and send it Company Confidential Raveon Technologies Corp.

  • Page 35: Bit Errors

    If large amounts of data will be sent with the M8, 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 36: Setting The Over-The-Air Data Rate

    19200bps. Due to IF filter limitations, it does not work as well at 19200 baud as lower data rates. Its performance is optimized for 9600 baud 2- level modulation. RV-M8S-UC (narrow-band version) Factory default, set R2 to 3 (4800 baud). For high-speed operation, set R2 to 4 (8000 baud).
  • Page 37 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. receive sensitivity. Company Confidential Raveon Technologies Corp.

  • Page 38: Debug Related Commands

    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 39: M8S 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 40 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 41: Tune-Up And Alignment

    (Varies based Preamble length – The number of bytes to send over- Range: 3 - 255 on data rate the-air in the pre-amble. and radio type. 7 typical) Company Confidential Raveon Technologies Corp.

  • Page 42: Center Frequency

    In this mode, the Carrier Detect handshaking line is nominally high and only goes low to signal that data is being output. The Pre-Data and Post-Data time can be set from 0-254ms, Company Confidential Raveon Technologies Corp.
  • Page 43 Set ATR1 3 to enable. Set ATS120 and ATS121 to set the number of milliseconds for pre and post data time. This feature is available in firmware version A31 and later. Company Confidential Raveon Technologies Corp.
  • Page 44 Unused Page?? Company Confidential Raveon Technologies Corp.

  • Page 45: 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 46: Symptom: Long Delay Before Transmitting

    If you replace the fuse, you must use a Littlefuse brand fuse, part number 0297003 or Raveon part, number 1X726-3 to maintain calibration of your unit. Solution Verify Low Power Mode.
  • Page 47 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 48: Mechanical

    12. Mechanical Company Confidential Raveon Technologies Corp.
  • Page 49 Limited Two Year Warranty If within 24 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 50 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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