Sandel SG102 Series User manual

Installation Manual
SG102
Attitude Heading Reference System
Including:
SG102/D (Digital)
&
SG102 MOD 2 with High Speed ARINC 429 and Reduced Initialization Time
&
MT102
Magnetic Transducer Accessory
Sandel Avionics, Inc.
2401 Dogwood Way
Vista, CA 92081
Phone [phone]
FAX [phone]
www.sandel.com
[e-mail]

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page ii
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82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page iii
Table of Contents
1General Information ...................................................................................................................1-1
1.1 Disclaimer...............................................................................................................................................1-1
1.2 Introduction............................................................................................................................................1-1
1.3 General Information on Strapdown AHRS..................................................................................1-2
1.4 SG102 Features....................................................................................................................................1-2
2Technical Information................................................................................................................2-1
2.1 General ....................................................................................................................................................2-1
2.2 MOD Levels............................................................................................................................................2-1
2.3 Part Numbers.........................................................................................................................................2-1
2.3.1 Software Version..........................................................................................................................2-2
2.3.2 Install Kit.......................................................................................................................................2-2
2.3.3 Bill of Materials – SG102 Install Kit...........................................................................................2-2
2.4 Approval Summary..............................................................................................................................2-3
2.4.1 License Requirements...................................................................................................................2-3
2.4.2 Approval Data...............................................................................................................................2-3
2.4.3 Technical Standard Order Stipulation..........................................................................................2-3
2.4.4 Installation and Operational Approval Procedures .....................................................................2-3
2.5 Characteristics......................................................................................................................................2-4
2.5.1 Dimensions....................................................................................................................................2-4
2.5.2 Summary Environmental.............................................................................................................2-5
2.5.3 Operational Specifications SG102 (MOD 2), SG102/D ............................................................2-5
2.5.4 Operational Specifications............................................................................................................2-5
2.5.5 Arinc 429 Labels – SG102 MOD 1.............................................................................................2-6
2.5.6 Arinc 429 Labels – SG102 MOD 2, SG102/D...........................................................................2-6
3Installation...................................................................................................................................3-1
3.1 Unpacking and Inspecting Equipment.........................................................................................3-1
3.2 Installation Planning...........................................................................................................................3-1
3.2.1 General Considerations.................................................................................................................3-1
3.2.2 Mounting Orientation...................................................................................................................3-1
3.2.3 Mounting Base Alignment...........................................................................................................3-1
3.2.4 Bendix/King KG102 Replacement Applications (SG102 P/Ns -000, -100, -200)....................3-1
3.3 Installation Considerations...............................................................................................................3-2
3.3.1 General..........................................................................................................................................3-2
3.3.2 Power.............................................................................................................................................3-2
3.3.3 Cooling..........................................................................................................................................3-3
3.3.4 Slaving Control Switches.............................................................................................................3-3
3.3.5 Operation without MT102............................................................................................................3-3
3.3.6 Inverter Outputs............................................................................................................................3-3
3.3.7 Synchro Outputs ...........................................................................................................................3-3
3.3.8 Discretes........................................................................................................................................3-3
3.4 Mounting Orientation..........................................................................................................................3-4
3.5 Attachment to the Airframe..............................................................................................................3-4
3.6 General Installation Instructions for the Hardware.................................................................3-4
3.7 Alignment................................................................................................................................................3-4
3.8 Post Installation Summary................................................................................................................3-6
4Connector Pinouts .....................................................................................................................4-1

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page iv
4.1 P-1 Connector......................................................................................................................................4-1
4.2 P-2 Connector (SG102 only)............................................................................................................4-2
5MT102 Information......................................................................................................................5-1
5.1 Differences between the MT102 and a Fluxgate........................................................................5-1
5.2 Environmental.......................................................................................................................................5-1
5.3 Wiring.......................................................................................................................................................5-1
5.4 Installation..............................................................................................................................................5-1
5.5 Connector...............................................................................................................................................5-2
5.5.1 Pinouts...........................................................................................................................................5-2
6Setup Procedures.......................................................................................................................6-1
6.1 Software Configuration......................................................................................................................6-1
6.1.1 SG102 Maintenance Adapter (USB) p/n 81032.........................................................................6-1
6.1.2 SG102 Installation-Calibration Utility Software.........................................................................6-1
6.1.3 Mounting Orientation Select........................................................................................................6-1
6.1.4 Compass Calibration.....................................................................................................................6-3
6.1.5 Arinc Maintenance Labels............................................................................................................6-3
6.1.6 Software Updating........................................................................................................................6-3
7Operational Details.....................................................................................................................7-1
7.1 Front Panel LED’s................................................................................................................................7-1
7.2 LED Error Codes..................................................................................................................................7-2
8Instructions for Continued Airworthiness...............................................................................
8-1
9Appendix A: Post-Installation Procedures.............................................................................9-1
10 Appendix B: Environmental Qualification............................................................................10-1
11 Appendix C: Sample FAA Form 337......................................................................................11-1
12 Appendix D: Sample Airplane Flight Manual Supplement..................................................12-1
13 Appendix E: Checkout Procedures.......................................................................................13-1
13.1 Functional Ground Test Procedures/Report........................................................................... 13-1
13.1.1 Introduction.............................................................................................................................. 13-3
13.1.2 Physical Installation................................................................................................................. 13-3
13.1.3 Wiring Verification and Initial Power-Up.............................................................................. 13-3
13.1.4 System Functions..................................................................................................................... 13-3
13.1.5 Installation Software: Mount Orientation Select.................................................................... 13-5
13.1.6 Installation Software: Heading Calibration............................................................................ 13-5
13.1.7 Additional Testing................................................................................................................... 13-5
13.2 EMI/RFI Test Procedures................................................................................................................ 13-5
13.2.1 NAV/COM Testing................................................................................................................. 13-5
13.2.2 General Testing........................................................................................................................ 13-6
13.2.3 Other Appliances..................................................................................................................... 13-6
13.2.4 Additional Testing................................................................................................................... 13-6
14 Appendix F: List of Effective Drawings and Attachments...................................................14-1

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page v
Table of Figures
Figure 3-1: Mounting base assembly features......................................................................3-5
Figure 3-2: SG102-0xx w/MOD 1, -1xx, -2xx, -3xx installed in Mounting Base Assembly....
................................................................................................................................................3-6
Figure 3-3 SG102-XXX w/MOD 2 installed in Mounting Base Assembly..........................3-6
Figure 3-4 SG102-X5X (SG102/D) installed in Mounting Base Assembly.........................3-6
Figure 5-1 MT102 showing alignment arrow......................................................................5-2
Figure 6-1 SG102 mounting orientations...........................................................................6-2
Figure 7-1 SG102 LED display..............................................................................................7-1

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page vi
Revision History
Rev
Date
Section(s)
Comments
J
29-SEP-2014
7.2
LED Error Code table updated.
H1
17 APR-2014
2.5.2
Summary Environmental table updated.
H 25-MAR-2014
ALL
1.2
1.4
2.2
2.3
2.3.3
2.5.1
2.5.2
2.5.3
2.5.5
2.5.7
3.2.3
3.2.4
3.3.2
3.3.6
3.3.7
3.7
4.1
4.2
6.1.2
6.1.4
7.2
12
14
SG102 MOD 0 not covered in this IM.
Added IM applicability statements.
Updated for high speed ARINC 429.Heading data output formats
updated.
MOD levels updated.
Additional part numbers added. Substitution note updated to include
SG102-x5x P/Ns.
SG102 Install Kit Bill of Materials updated.
MOD 1 & MOD 2 Length spec corrected (+.05” / excluding mating
connectors). Dimensions for SG102/D added.
Summary environmental data updated for SG102/D.
Summary Environmental data for MOD 1 & MOD 2 listed.
Updated for SG102/D.
Updated for SG102/D.
Mounting base alignment note clarified.
Updated for applicability.
Section 2 references added.
Updated for applicability.
Updated for applicability.
Images updated to include SG102/D.
Updated for SG102/D.
Updated for effectivity.
Updated for SG102/D.
Typo corrected.
LED Error Code table updated.
Updated for SG102/D.
List of effective drawings updated.
G2 6-FEB-2014
REV History
2.2
G1 section 2.4.2 reference changed to 2.5.2
Section 2.2: Mod Levels corrected.
G1 3-FEB-2014
2.5
2.5.2
2.2
14
Cover text updated.
ARINC Label table updated
Startup current updated to 30Watts, 1 minute
MOD Level description added
Added drawing 90183-05. Previously omitted.
G 30-JAN-2014
1.2
2.4.1
2.4.3
2.4.4
2.4.5
3.2.4
3.3.1
3.7
4.1
6.1.2
6.1.3
7.1
12
14
Limitations updated for MOD-2. Added note for recommended
maximum North and South latitude operation.
Updated for Mod 2
Updated for Mod 2
Initialization time and Arinc 429 info updated
Updated for Hi Speed Arinc 429. Rep rates updated
Added note for use as KG102 replacement when used with
SN3500/SN4500.
Updated for Mod 2
Mod 2 drawing added.
Updated for Hi speed Arinc 429
Updated for Hi speed Arinc 429
Mounting orientation drawings updated with MOD 2 SG102
SG102 LED Display image updated. MOD-2 Initialization time
added.
Mod 2 added to Sample AFMS.
List of Effective Drawings updated. Drawing 1071-05 Updated for
MOD 2

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page vii
Revision History
F 17-FEB-2011
1.3
2.2.1
2.2.2
2.4
2.4.3
2.4.4
3.3.8
4.2
5.4
6.1.6
Appendix B
Appendix D
Added note about 4-quadrant compass calibration. Updated Ground
Test references to Installation Software.
Updated installation program description.
Changed Install Kit text.
Updated mechanical specifications.
Added AHRS specs
Added new Arinc labels and selection info. Added 429 low speed
notes.
Added note on 10k pullup.
Added gnd/open to pin table
Added installation tolerance to MT102 longitudinal alignment.
Added reference to software loading.
Added DO-160E Environmental Qualification Forms.
Removed aerobatic limitation mod1.
E 11-FEB-2009 1.212
Update limitation note. Limitation, modified for reversionary or
backup display.
D 06-NOV-2008
7.1
12
Changed initialization time.
Changed sample AFMS section IV
C 30-OCT-2008
Cover
Rev History
2.2
2.2.3
2.4.1
3.3.1
3.7
7.1
12
13.1.4
14
Updated.
Format.
Added model number substitution notes.
Removed the –A from part numbers 84051 and 61251 on B.O.M.
Corrected dimensions and included MOD 1.
Changed installation drawing for MOD 1.
Modified Fig. 3-3 to cover SG102 with MOD 1.
Updated initialization time to include MOD 1 units.
Added MOD 1 initialization time to sample AFMS.
Added MOD 1 initialization time to ground test.
Updated drawing table, added note column.
B
07-FEB-2008
App. F
A/R 972 drawing 82011-10 sheets 4 & 5.
A
19-DEC-2007
All
Initial release.

General Information
82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page 1-1
1General Information
1.1 Disclaimer
Sandel Avionics does not assume any risk for nor accept any responsibility for the interface
descriptions contained within this Installation Manual. It is the responsibility of the installer to ensure
that such equipment is compatible with the SG102 as described, and to ensure that the installation of
the SG102 is accomplished with such equipment using the specific equipment manufacturer’s
installation and technical instructions. No other representations are expressed herein.
1.2 Introduction
The Sandel model SG102 is a solid-state sensor that combines angular rate, linear acceleration and
magnetic field measurements to create an electronically stabilized strap-down Attitude and Heading
Reference System (AHRS).
The information contained within this manual describes the features, functions, technical
characteristics, components, approval procedures, installation considerations, setup procedures,
checkout procedures, and instructions for continued airworthiness for the SG102.
This revision of the SG102 Installation Manual is applicable to the following SG102 models:
SG102 MOD 1, SG102 MOD2. SG102/D.
For information pertaining to the SG102 MOD 0, please refer to 82011-IM revision G.
The SG102 requires the use of the Sandel MT102 magnetic transducer accessory. No additional flux
gate is used or required.
Limitation Notes:
(1) The SG102 is not certified to provide primary attitude information to the flight
crew. The SG102 is certified to provide reversionary attitude in the primary
field of view. The SG102 may also be used to stabilize other aircraft equipment
for example, RADAR and/or FLIR systems.
NOTE: The SG102 may not provide satisfactory heading performance above 70°
north latitude or below 70° south latitude.
The SG102 AHRS meets the pertinent requirements of
TSO-C4c “Bank and Pitch Instruments”;
TSO-C6d “Direction Instrument, Magnetic (Gyroscopically Stabilized)”
RTCA DO-160E
RTCA DO-178B, Level C Software

82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page 1-2
1.3 General Information on Strapdown AHRS
When used as a DG replacement, the SG102 differs in certain key characteristics from the electro-
mechanical gyro it replaces which affect the installation. It must be remembered that the SG102 is a
strapdown AHRS and this means it is installed like an AHRS - even if it is used or thought of as a
directional gyro.
A strapdown AHRS is composed of three sensors in a Roll-Pitch-Heading orientation. When the
aircraft is level it is easy to visualize its operation as each of the three sensors senses the movement in
its own axis. However, the operation of the AHRS gets complicated as the aircraft maneuvers. For
instance in a 90 degree bank what was the Pitch sensor is now the Heading sensor; the Heading sensor
is now the Pitch sensor. This sensor translation occurs at every intermediate attitude. In order for this
process to work properly, the SG102 itself must be precisely aligned with the aircraft axis; otherwise
changes in roll may induce like small changes in pitch, and vice-versa. Very small misalignments will
wash out during operation, but large misalignments will cause improper operation.
A mechanical DG has no such requirement as it is gimbaled and will level itself to gravity on startup
and stay level during most flight maneuvers. This means that a mechanical DG installed non-level
will work properly; however installing with the SG102 without checking the mechanical alignment
will not work. Make sure the SG102 is mechanically aligned! Once correctly installed the SG102
mounting base is designed to allow removal and replacement of the SG102 without realignment.
The 4-quadrant compass calibration (part of the ground test procedure) is important for correct system
operation. Do this carefully! The benefit of doing this calibration correctly is the SG102 will be more
accurate in heading, especially during maneuvers, than a mechanical DG.
1.4 SG102 Features
The SG102 is intended for use in airplanes or helicopters to provide stabilized primary magnetic
heading to compass indicators, flight control and director systems, or other aircraft systems requiring
stabilized heading information.
The SG102 provides output heading data in the following formats:
Heading Format
SG102
SG102/D
MOD1
MOD2
ARINC 407 (XYZ)
X
X
-
ARINC 429 (LOW SPEED)
X
X
X
ARINC 429 (HIGH SPEED)
-
X
X
RS-232 Stormscope™
X
X
X
Quadrature Stepper
X
X
-
The SG102 incorporates a single 26 pin “D” connector with a Positronics latch. Additionally, the
SG102 MOD 1 and MOD 2 (P/Ns SG102-000, -100, -200) is signal and plug compatible with the
Bendix/King KG102 electromechanical directional gyro used in the KCS55 compass system.
Contact the factory with any questions about interfacing to specific equipment not covered in the
installation drawings.

Technical Information
82011-IM, REV J Sandel SG102 & MT102 Installation Manual Page 2-1
2Technical Information
2.1 General
The following section describes the technical characteristics that include the appliance approval basis,
physical and electrical properties, electrical connector pin allocation which details function and
gradient or equipment protocol, and ARINC label support. Also included is the description of the
SG102 and MT102 installation components, other equipment and installation requirements. A review
of the installation approval procedures is provided for filing with authorities.
2.2 MOD Levels
The SG102 models covered in this Installation Manual have been produced in several variations over
time: (As indicated on TSO label)
SG102 MOD 1
Shock Mount Base, Increased Roll Rate
SG102 MOD 2
Rigid Base. Provides High Speed ARINC 429, initialization time
is reduced.
SG102/D
Rigid Base. All digital.
MOD 1 and MOD 2 units are, except for the specifications, interchangeable.
2.3 Part Numbers
The part number (SPN) for the Sandel SG102 is:
Description
SPN - SG102 (MOD 1, MOD 2)
SPN - SG102/D
Fixed Wing, Piston Aircraft
SG102-000
SG102-050
Fixed Wing, Turbine Aircraft
SG102-100
SG102-150
Helicopter
SG102-200
SG102-250
SG102-XXX
Major
Variation
Minor
Variation