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IRIG 106 Tips and Tricks

IRIG 106 Tips and Tricks. A Little About Me. Bob Baggerman bob.baggerman@gatech.edu Georgia Tech Research Institute Graduated Georgia Tech EE ’80 Worked for GTRI 25+ Years Participant with the Recorders and Reproducers Committee of the RCC Operate the www.irig106.org Web Site.

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IRIG 106 Tips and Tricks

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  1. IRIG 106 Tips and Tricks

  2. A Little About Me • Bob Baggerman • bob.baggerman@gatech.edu • Georgia Tech Research Institute • Graduated Georgia Tech EE ’80 • Worked for GTRI 25+ Years • Participant with the Recorders and Reproducers Committee of the RCC • Operate the www.irig106.org Web Site

  3. IRIG 106 Standard(s) • Purpose of IRIG standards is to promote test range interoperability • IRIG 106 has a number of chapters and appendices • Most important chapters are: • Chapter 6 – Status and Control • Chapter 9 – TMATS • Chapter 10 – Digital Data Recorder

  4. Chapter 10 Standard • Comprehensive Standard • Used for Hardware and Software Acquisition • Defines Capabilities, Not Architecture • Developed by DoD (Range Commanders Council) • Mostly USAF (Eglin AFB and Edwards AFB) • Some Navy Participation • Considerable Vendor Participation • Defines... • Data Format • Data Download Interface • Recorder Control and Status Interface • Lot’s of Good Stuff, Some Goofy Stuff

  5. Tape Recordings • Ubiquitous Mass Storage for Decades • Actually quite advanced • Spawned an instrumentation industry • Some aspects persist in IRIG 106 • Control Commands • Data blocking and format • Still used today – “Never underestimate the bandwidth of a station wagon full of mag tapes”

  6. Everything has gone digital • Solid State Media • Removable Memory Module (RMM) • Digital Data Representation • Data stored in digital messages • Messages grouped into packets • Random Access • Download looks like block oriented disk drive • STANAG 4575 directory structure

  7. Chapter 10 Data File Layout TMATS • Sequential Series of Data Packets • One Data Type and Data Channel per Packet • First Data Packet is TMATS Info • Last Data Packet is Index (if supported) • Each Data Packet has... • Standard Header and Trailer • Data Payload TIME VIDEO VIDEO TIME VIDEO 1553 VIDEO TIME 1553 VIDEO : INDEX

  8. Chapter 10 Data Message Layout TMATS • Multiple messages per packet • Data Packet Composed of • Standard Header • Optional Secondary Header • Data Payload • Channel Specific Data Word • Intra-Packet Header • One or more Data Words • Standard Trailer • Max Packet Size = 524,288 bytes TIME VIDEO VIDEO TIME HEADER CSDW VIDEO DATA MSG #1 1553 DATA MSG #2 DATA MSG #3 VIDEO : DATA MSG #N TRAILER TIME 1553 VIDEO : INDEX

  9. Chapter 10 Data Packet Constraints • Each Packet Has Data From One Channel Only • Each Packet Must Contain Data • Minimal Filler Allowed • No more than 100 msec of Data per Packet • Packet Must Be Committed To Disk Within 1 Sec • All Data Is Time Stamped with a Common Relative Time Counter (RTC)

  10. Chapter 10 Data Types Type Num Data Type Name Data Type Description ---- ---------------------------------- ------------------------------- 0x00 Computer Generated Data, Format 0 User Defined 0x01 Computer Generated Data, Format 1 Setup Record (TMATS) 0x02 Computer Generated Data, Format 2 Recording Events 0x03 Computer Generated Data, Format 3 Recording Index 0x09 PCM Data, Format 1 IRIG 106 Chapter 4/8 0x11 Time Data, Format 1 IRIG/GPS/RTC 0x19 MIL-STD-1553 Data, Format 1 Mil-Std-1553B Data 0x1A MIL-STD-1553 Data, Format 2 16PP194 Bus 0x21 Analog Data, Format 1 Analog Data 0x29 Discrete Data, Format 1 Discrete Data 0x30 Message Data, Format 0 Generic Message Data 0x38 ARINC 429 Data, Format 0 ARINC429 Data 0x40 Video Data, Format 0 MPEG-2/H.264 Video 0x41 Video Data, Format 1 ISO 13818-1 MPEG-2 0x42 Video Data, Format 2 ISO 14496 MPEG-4 Part 10 AVC/H.264 0x48 Image Data, Format 0 Image Data 0x49 Image Data, Format 1 Still Imagery 0x50 UART Data, Format 0 UART Data 0x58 IEEE-1394 Data, Format 0 IEEE-1394 Transaction 0x59 IEEE-1394 Data, Format 1 IEEE-1394 Physical Layer 0x60 Parallel Data, Format 0 Parallel Data 0x68 Ethernet Data, Format 0 Ethernet Data

  11. IRIG 106 Strengths / Weaknesses • Strengths • Non-proprietary • Interoperability • Lots of vendors • Weaknesses • Not easily extensible • No data object model • Doesn’t network very well

  12. Uvula

  13. Tip #1 - HOW TO Extend IRIG 106 • Use Generic Message Data Packets (0x30) • This is the “blessed” solution • Free form data • Down side is no way to distinguish data contents • “Steal” an unused packet type • This is the “Robin Hood” solution • Steal from the rich, give to the poor • No guarantee of uniqueness or interoperability • Very commonly done • Extend IRIG 106 through the standards process

  14. Tip #1 - Standards Process • The Range Commanders Council - Telemetry Group (RCC-TG) writes IRIG 106. • The Recorders and Reproducers (R&R) Committee writes Chapter 10 of IRIG 106 • The TG meats, er, meets twice annually • Membership is open to any interested party that is willing to participate constructively through the Recorder Vendor Working Group (RVWG) • Government • Vendors Your idea goes here Hopefully this is the result

  15. Tip #2 - Extend TMATS • TMATS tells you how data was encoded • TMATS doesn’t tell you what data is in the file • Data could be interpreted differently A better data description helps but how?

  16. Tip #2 - TMATS Packet • “Parameters required by the receiving/processing system to acquire, process, and display the telemetry data received from the test item/source” • Required To Be First Data Packet • Documents… • Recorder Setup • Data Definitions • TMATS is Ugly but Very Useful • More could be done with TMATS • Will Be Replaced By XML Real Soon Now (RSN)

  17. Tip #2 - Chapter 9 TMATS EXAMPLE G\PN:GSR-ATP; G\TA:FullConfig; G\106:05; G\DSI\N:1; G\DSI-1:DATASOURCE; G\DST-1:OTH; G\OD:21/02/2006; G\UD:21/02/2006; G\POC\N:1; G\POC1-1:Balazs Bago; R-1\ID:DATASOURCE; R-1\TC1:SSR; R-1\RI1:Heim; R-1\RI2:Unknown; R-1\RI3:Y; R-1\N:25; R-1\DSI-1:Time; R-1\TK1-1:1; R-1\CHE-1:T; R-1\CDT-1:TIMEIN; R-1\TFMT-1:B;

  18. Tip #2 - Extend TMATS – V Group • Approach #1 - V Group Attributes • V Attributes are Vendor Specific info • Encoding and interpretation of V Attributes is up to the user (Wild Wild West) V-1\ID:SomeRecorderID; V-1\VN:TLA; V-1\TLA\ACType:F16-SCU6; V-1\TLA\Bus-1:AMux; • V Attributes are typically used for additional recorder settings not provided by standard TMATS

  19. Tip #2 - Extend TMATS – H Group • Approach #2 - H Group Attributes • H Attributes are the Airborne Hardware Attributes Group defining the specific configuration of airborne instrumentation hardware in use on the item under test. • Encoding and interpretation of H Attributes is up to the user (Wild Wild West) H\TA:SomeRecorderID; H\ST-1:F16-SCU6; H\ST-2:AMux; H\ST-3:WMux; • H Attributes aren’t widely encounted

  20. Tip #2 - Extend TMATS – S Group • Approach #3 - S Group Attributes • S Group Attributes can provide the magic decoder ring • This S Group usage is relatively new • 106-07 and earlier • Packet Format Attributes • Used to describe PCM frames • 106-09 changed S Group • Message Data Attributes Group • Used to describe UART, Message, Ethernet, and IEEE-1394 Chapter 10 channel data types

  21. Tip #2 - Extend TMATS – S group • S Attributes describe... • Channels • Streams within Channels • Message Layout within Streams • Measurement Layout Formats • Field Layout Formats

  22. tip #3 - Multiple Time Channels • All Packets Have Common Time Stamp • 10 MHz Clock Frequency • 48 Bits Free Running Counter • Ch 10 treats time as just another data channel • Different time sources should be recorded in different channels • Vendors usually merge time sources into one time channel

  23. tip #3 - Multiple Time Channels Typical Implementation Combined Time Channel Preferred Implementation Internal Time GPS Time IRIG-B Time

  24. tip #4 - Live Data Streaming 1553 Analog Video 1 Video 2

  25. tip #5 – Free Software Utilities www.irig106.org Command Line Utilities i106stat i106trim idmptmat idmp1553 idmpuart idmpvid idmpins idmpgps idmp429 idmptime Windows Utilities Display_TMATS i106Dub Libraries C Static Libraries (gcc, MSVS, .NET) C Dynamic Libraries (.a, .dll) Other Free Stuff EMC Packet Viewer Sample Data Files

  26. tip #5 – free Software Utilities • idmpgps / idmpins GPS GPS Longitude Latitude Altitude True Ground Date Time (+ East) (+ North) MSL HAE Course Speed (UTC) (- West) (- South) (feet) (feet) (kts) 09/29/2009 18:17:26 -117.27669 35.51386 3803 -93 8.3 235.0 09/29/2009 18:17:27 -117.27655 35.51496 3802 -93 6.1 234.4 09/29/2009 18:17:28 -117.27645 35.51606 3799 -93 3.7 234.0 09/29/2009 18:17:29 -117.27640 35.51718 3797 -93 1.2 233.4 09/29/2009 18:17:30 -117.27642 35.51829 3797 -93 358.6 232.6 09/29/2009 18:17:31 -117.27649 35.51939 3797 -93 356.0 231.7

  27. tip #5 – free Software Utilities Display TMATS IRIG 106 Dub

  28. tip #6 - Handbooks • Ch 9 – TMATS User’s Guide • Used to supplement Chapter 9 • More extensive narrative • Many examples • Ch 10 – Programmer’s Handbook • Used to supplement Chapter 10 • Geared towards programmers • Additional guidelines, knowledge, algorithms • Example data structures • Example code

  29. Future Directions • More Networking • Smaller, Better • Live Data Streaming • iNET • More Data Types • More Features

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