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Digi M10 Technical overview and Reference

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Digi m10

Technical Overview

And
Reference
Date: 12 January 2012
90033936_C

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  • Page 1: Technical Overview

    Digi m10 Technical Overview Reference Date: 12 January 2012 90033936_C...

  • Page 2: Copyright Notice

    Digi International may make improvements and / or changes in this manual at any time without prior notice. Trademarks The Digi m10 is a registered trademark of Digi International Inc. All other company and / or product names mentioned in this manual are the property of their respective owners.

  • Page 3: Document Revision History

    Document Revision History Version Description Date 1.00 Initial release of the user manual 23 Sep 2008 1.10 FAQ section added and minor changes made 30 Sep 2008 1.20 Technical review changes and minor additions 21 Oct 2008 1.30 Extract hardware information into separate manual 20 Aug 2009 Rev A Complete revision...

  • Page 4: Table Of Contents

    Reference Documents ......................... 7 Where to Get Help ........................7 General Description ....................... 8 Background ........................8 Communication using a Digi m10 Satellite Modem ............9 Types of Communication Methods ..................11 Data Reports ........................ 11 Messages ........................11 Global Grams ....................... 11 Terms and definitions: ......................
  • Page 5 Table 4: Temperature Query Response Packet ................20 Table 5: NVM Data Corruption Alert Packet .................. 21 Table 6: Code Upgrade Packet ..................... 21 Table 7: RTS/CTS Control Packet ....................23 List of Figures Figure 2: SCO Report Transmission Cycle ..................9 Digi International, Inc. © 2009...

  • Page 6: About This Manual

    Digi m10 Technical Overview About This Manual This manual provides a detailed technical overview on how the Orbcomm satellite network operates, available message types, specific Digi message extensions, and other related technical information. Target Audience The target audience for this document is comprised engineers and other individuals with a technical background.

  • Page 7: Reference Documents

    Reference Documents The following documents were used to create this user guide, and provide more information about the technologies and standards involved using the Digi m10 ORBCOMM Satellite Modem.  Department of Defense Test Method Standard for Environmental Engineering Considerations and Laboratory Tests, MIL STD 810E ...

  • Page 8: General Description

    Digi m10 Technical Overview 1. General Description This chapter provides an overview of the Digi m10 Satellite Modem and its features. Background The ORBCOMM system is a two-way system that supports communication to and from mobile or fixed satellite modems, also called Subscriber Communicators (SCs).

  • Page 9: Communication Using A Digi M10 Satellite Modem

    Communication using a Digi m10 Satellite Modem Once an antenna is properly hooked up to the Digi m10 and it has a clear line of sight to the sky, the Digi m10 can start communicating with satellites as they move overhead. Availability of satellites is highly dependent on regional location and how busy a satellite currently is;...
  • Page 10 When the message is received by the GCC, the GCC transmits it through the GES to the satellite in orbit, which then transmits the message down to the Digi m10. Once the message is received by the Digi m10, the user can query for the message serially. Note the Data Available signal asserts when the Digi m10 has received a message.

  • Page 11: Types Of Communication Methods

    2. Types of Communication Methods Data Reports A Data Report is the basic service element the Digi m10 uses to transmit or receive a single packet containing 6 bytes or less of user-defined data. A Data Report can require an acknowledgment of successful delivery to the ORBCOMM Gateway, but this acknowledgment can be omitted to save space segment resources.

  • Page 12: Terms And Definitions

    Public Switched Telephone Network (PSTN) The current ORBCOMM Gateways consist of the Western Hemisphere (Gateway ID of 1), the Eastern Hemisphere (Gateway ID of 120), and Japan (Gateway ID of 130). Digi International, Inc. © 2009 Page 12 of 26...

  • Page 13: Gateway Earth Station (Ges)

    Messages sent to the SC from the GES More documentation can be found on the kit installation CD. To learn more, navigate to C:\Program Files\Digi\Digi m10 JumpStart Kit\documents please refer to either ORBCOMM Serial Interface Specification > SC-TERMINATED MESSAGE or ORBCOMM Serial Interface Specification >...

  • Page 14: Message Blocking

    (SC-Originated) and receiving (SC-Terminated) from a satellite modem point of view. More documentation can be found on the kit installation CD. To learn more, navigate to C:\Program Files\Digi\Digi m10 JumpStart Kit\documents please refer to either ORBCOMM Serial Interface Specification > Figure 4.5 SC-Originated Globalgram & Figure 4.6 SC-Terminated Globalgram or ORBCOMM Serial Interface Specification >...

  • Page 15: Speed Dial

    Please refer to the online help of the Digi Satellite Dashboard application for more information about the speed dial forwarding. If you have any additional questions, please contact Digi technical support.”...

  • Page 16: Alternate Terminating Address (Ata) / Message Forwarding

    Table 1: Message Acknowlegements More documentation can be found on the kit installation CD. To learn more, navigate to C:\Program Files\Digi\Digi m10 JumpStart Kit\documents. For more information please refer to the ORBCOMM Messaging Services Description > Appendix B SMTP Acknowledgment Service 3.11 Alternate Terminating Address (ATA) /...

  • Page 17: Ges-To-Satellite Channels

    TCP/IP IEEE 802.3 (Ethernet) packet routers, which provide link layer internetworking, connect these interfaces to the GCC and GES facilities. The GES process communicates with the GMSS process using TCP/IP UDP packets. Digi International, Inc. © 2009 Page 17 of 26...

  • Page 18: Digi Extended Packets

    Fletcher Checksum Fletch1 NOTE: This packet is sent from the Digi m10 to DTE when temperature of the Digi m10 goes beyond the operating range (-40C to +85 C). DTE should power down the Digi m10 when this packet is received.

  • Page 19: Temperature Query

    Digi m10 Technical Overview Temperature Query The Temperature Query packet (see Table 3) is sent from the host controller to query the Digi m10 temperature. Table 3: Temperature Query Packet 0x85/0x86 Packet Header 0x19 Packet Type Length0 Length of the packet...

  • Page 20: Temperature Query Response

    Temp2 Temp3 Fletch0 Fletcher Checksum Fletch1 NOTE: This packet is sent from the Digi m10 to DTE and it contains the current temperature of the Digi m10 in degrees Celsius. Digi International, Inc. © 2009 Page 20 of 26...

  • Page 21: Nvm Data Corruption Alert Packet

    Retry_count/ Pkt Sequence Number Fletch0 Fletcher Checksum Fletch1 NOTE: This packet is sent from m10 to DTE when NVM data is corrupted and the Digi m10 resets NVM data to factory defaults by itself. Code Upgrade Packet Table 6: Code Upgrade Packet...
  • Page 22 Digi m10 Technical Overview NOTE: DTE should send this packet to m10 before initiating xmodem code upgrade process.DTE receives LLACK in response to this packet. Digi International, Inc. © 2009 Page 22 of 26...

  • Page 23: Rts/Cts Control Packet

    Fletch0 Fletcher Checksum Fletch1 The checksum for the received LLACK, in response to DIGI m10 extended RTS/CTS control packet sent by DTE, should be calculated for the first 5 bytes only. Example: On sending RTS/CTS enable/disable command, the LLACK that we receive is:...
  • Page 24 Digi m10 Technical Overview Digi International, Inc. © 2009 Page 24 of 26...

  • Page 25: Appendix A: Upgrade Firmware

    Digi m10 Technical Overview Appendix A: Update Firmware 1) Go to Start > program Files > Digi > Digi m10 Jumpstart Kit > Tools and Click on “Firmware update”. 2) Once application starts, select COM port and the required firmware file (.ldr) from saved location and click on Start button.
  • Page 26 Digi m10 Technical Overview WARNING: Do NOT turn off your Digi satellite modem or remove any cables during the firmware upgrade process. This may result in corrupted firmware, causing your satellite modem to be no longer functional! Digi International, Inc. © 2009...

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