SG102D Attitude Heading Reference System

SG102D Attitude Heading Reference System

D, for Digital. The SG102/D Attitude Heading Reference System (AHRS) is identical to the SG102 (MOD2) without the analog interfaces. It’s lighter in weight and lighter in price. The SG102/D is designed for non-KG102 equipped aircraft and ideal for new equipment installs.

With an improved initialization time of one minute, it’s 3X faster than the original SG102. It also comes with a selectable low- and high-speed ARINC 429 output, which allows for additional interface options such as radar systems, satellite communication antennas and FLIR stabilization.

The SG102/D is available in three versions depending on the application

  • SG102/D-050: Fixed-Wing Piston Aircraft
  • SG102/D-150: Fixed-Wing Turbine Aircraft
  • SG102/D-250: High-Vibration Version for Helicopters

Product Images

Operational & Functional Benefits

  • Certified for primary heading reference and secondary attitude
  • 1 minute installation time
  • Compatible with digital heading interfaces
  • Pitch and roll output for auxiliary applications requiring stabilization

Documents

Product Support

SG102 & SG102/D Installation Manual (1.7 MB)
SG102 & SG102/D Calibration Procedure (1.0 MB)
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SG102 & SG102/D Software Version History

Software updates require the use of the SG102 Maintenance Adapter, part number 90230-A.

Note:

Only SG102 units with MOD 2 (serial numbers 11-3100 or higher) and SG102/D units are compatible with software version 1.50 and higher.
Only SG102 units with MOD 1 (serial numbers 11-2501 through 11-3099) are compatible with software versions 1.25 through 1.35.

1.62 – Released 5/15/2015 – SG102 MOD 2 and SG102/D Units Only (Field loadable from version 1.61 only)
  • Improves performance during low-bank turns.
    Corrects the slaving meter output on the SG102 P2 connector for proper indication on King KA 51A/B slaving accessories.
1.61 – Released 9/30/2014 – SG102 MOD 2 and SG102/D Units Only (Not field loadable)
  • Change to production calibration process.
1.35 – Released 9/25/2014 – MOD 1 Units Only
  • Change to internal temperature profile.
1.51 – Released 4/11/2014 – SG102 MOD 2 and SG102/D Units Only
  • Support of SG102/D.
  • Performance enhancements during startup and long term turning.
​1.50 – Released 2/4/2014 – MOD 2 Units Only
  • Support of MOD 2 hardware.
  • Provides selectable high speed ARINC 429.
  • Initialization time reduced to 1 minute nominal.
1.31 – Released 2/16/2011
  • Improved SG102 tolerance to MT102 rotational misalignment in aircraft.
1.30 – Released 11/5/2009
  • Improves performance during and after maneuvers.
1.26 – Released 9/24/2009
  • Supports new calibration procedure.
1.25 – Released 6/26/2009
  • Enhanced performance to support the Reversionary Attitude feature in SN3500/SN4500 units.
  • Supports continuous turns around a point at bank angles above 8 degrees.
  • Supports aerobatic operations up to 150° per second roll rate.
1.10 – Released 10/31/2008
  • Supports MOD 1 SG102 hardware.
1.00 – Released 12/18/2007
  • Initial release.
SIL SG102-11: Software version 1.62 for SG102 with MOD 2 and SG102/D – 5/6/2015
SIL SG102-10: Software version 1.61 for SG102 with MOD 2 and SG102/D – 10/15/2014
SB SG102-08: Software version 1.35 for SG102 with MOD 1 – 9/19/2014
SB MT102-02: Inspection of MT102 – 3/28/2014
SIL MT102-01: Inspection of MT102 – 3/13/2014
  • Superseded by SB MT102-02
SIL SG102-07: MOD 2 Release – 3/6/2014
SIL SG102-06: Software version 1.31 – 2/16/2011
SIL SG102-05: Software version 1.30 – 11/5/2009
SIL SG102-04: Software version 1.26 – 9/24/2009
SIL SG102-03: Software version 1.25 – 6/26/2009
SIL SG102-01: Installation manual correction – 3/6/2008

SG102/D Software Update Access