L3 Aviation Products GH-3100 User manual

5353 52nd Street, S.E.
TP-559 (Revision K)
Grand Rapids, MI 49512-9704, USA
March 30, 2017
L3aviationproducts.com
Electronic Standby Instrument System
Model: GH-3100
Part Number: 501-1860-(xxx1)
Part Number: 501-1860-(xxx3)
Installation and Operation Manual
This manual contains installation and operating
information for the GH Electronic Standby Instrument
System. Information in this manual includes the following
products: GH-3100 Electronic Standby Indicator (with 1.3,
1.4 or 3.0 software), DCM-3100 Detachable Configuration
Module, and MAG-3000 / MAG-3100 Magnetometer. This
information is supplemented and kept current by
revisions, service letters and service bulletins.

Page A Front Section TP-559
March 30, 2017 Revision K
Foreword
This manual provides information intended for use by persons who, in accordance with current regulatory
requirements, are qualified to install this equipment. Installation requirements may vary, depending on the
particularities of each aircraft, and this manual is intended as a guideline for that purpose. This manual
assumes familiarity with the setup and operation of the aircraft systems that interface with the GH-3100.
Standard installation practices prescribed in FAA Advisory Circular No. 43.13-2B must be followed.
If further information is required, please contact:
L3 Aviation Products
Attn: Field Service Engineering
5353 52PP
nd
PP Street, S.E.
Grand Rapids, MI USA 49512-9704
Telephone: [phone] or [phone]
Fax: [phone]
Email: [e-mail]
Web: www.L3aviationproducts.com
This manual is distributed with permission by:
L3 Aviation Products
5353 52PP
nd
PP Street, S.E.
Grand Rapids, MI USA 49512-9704
Telephone: [phone] or [phone]
Fax: [phone]
Email: [e-mail]
We welcome your comments concerning this manual. Although every effort has been made to keep it free
of errors, some may occur. When reporting a specific problem, please describe it briefly and include the
manual part number, the paragraph/figure/table number, and the page number. Send your comments to the
address or email above:
Disclaimer
This manual contains information that is considered relevant only at the time of distribution with the L3
Aviation Products product for which it is shipped. Information in this manual is subject to change without
notice.
1T21T
WARNING
INFORMATION SUBJECT TO EXPORT CONTROL LAWS
This technology is controlled under the Export Administration Regulations
(EAR) and may not be exported to a Foreign Person, either in the U.S. or
abroad, without proper authorization by the U.S. Department of
Commerce.
Copyright 2017
L3 Aviation Products

GH-3100
Installation & Operation Manual
TP-559 Front Section Page i
Revision K March 30, 2017
About This Manual
SECTION 1 – GENERAL INFORMATION
This section provides the following information: unit configurations, unit functionality, items
required but not supplied with the unit, equipment specifications, installation approval/limitations
and TSO approvals.
SECTION 2 - INSTALLATION
This section contains instructions to locate, assemble and install the GH-3100 Electronic Standby
System as well as information for unpacking equipment, and inspection procedure for in-shipment
damage.
SECTION 3 – INSTALLATION CHECKOUT
This section contains instructions for post installation setup and post installation checkout
procedures.
SECTION 4 – MAINTENANCE
This section contains general flightline maintenance procedures. It includes periodic maintenance,
troubleshooting, return to service procedures and instructions for the return of defective components.
APPENDIX A – SIGNAL AND CABLE CHARACTERISTICS
This appendix defines the electrical characteristics and wiring and label configuration options of all
input and output signals.
APPENDIX B – ENVIRONMENTAL QUALIFICATION FORM
This appendix provides the environmental qualification test data for the GH-3100 Indicator and
DCM-3100 Configuration Module.
Descriptions for Warnings, Cautions, and Notes are used throughout the manual to highlight important
information.
A WARNING is used to give notice to or call one's attention to beforehand especially of danger (such as
a warning to a Flight Crew person or a warning to a mechanic before performing a dangerous task).
A CAUTION is a statement that expresses the need for heightened awareness to conditions that can cause
damage to equipment.
A NOTE is used to point out a procedure, event, or practice that it is desirable to highlight.

GH-3100
Installation & Operation Manual
Page ii Front Section TP-559
March 30, 2017 Revision K
References
To get an up-to-date listing of all L3 Aviation Products technical publications and service literature go to
21T21Twww.L3aviationproducts.com21T21T, click on the Customer Support tab, select Technical Publications, and
select Current Publications on the left side of the screen.
Contact L3 Aviation Products Customer Service [1-800-453-0288] to determine availability of technical
publications and directives.
Service literature and publications can be obtained by either downloading from the L3 Technical
Publications website (may require secure site access) or by receiving a copy via email. Send an email
request to 21T21Tavionics.techpub[email protected]21T21T. Note – Additional request for software and databases may be
required.
PUBLICATION DESCRIPTION
TP-560 Pilot’s Guide, GH-3100
TP-603 Troubleshooting Guide, GH-3100
Letter of Equivalency Letter of equivalency for the GH-3100 software released 3.0.
TP-633 Installation Manual, MAG-3000 Magnetometer.
0040-21200-01 Installation Manual, MAG-3100 Magnetometer.
TP-623 Instruction Manual, JT-147A Calibration Test Set
SL-179 Service Letter - Fan Failures During Power ON Self Test Mode
SL-186 Service Letter - Provide factory generated tolerance settings of altitude
accuracy for certified repair stations.
SL-189 Service Letter –
1. Import / Export control issues.
2. Modification status of models GH-3000, GH-3004, and GH-3100.
SL-244 Service Letter - To inform customers about the replacement of the GH-3100
with software version 1.3 with the new GH-3100 with software version 3.0.
SL-245 Service Letter - During initial or user initiated alignment, attitude error may
be introduced during transition to the external heading source.
SB501-1860-1 Service Bulletin - To ease manufacturing and repair of the keyboard
assembly.
SB501-1860-2 Service Bulletin - To correct startup errors for Level Sensor Self Test.
SB501-1860-3 Service Bulletin - Provide replacement display due to diminishing source.
SB501-1860-4 Service Bulletin - Correct insufficient timing margin for 16-BIT A/D High
Byte-Low Byte Select Line.
SB501-1860-5 Service Bulletin - Provide additional screw depth engagement in sensor
mounting bracket.
SB501-1860-6 Service Bulletin - Manufacturing Change. Produce a universal Lighting
Controller.
SB501-1860-7 Service Bulletin - Manufacturing Change. Provide replacement for Pitch
Rate Sensor Flex.
SB501-1860-8 Service Bulletin - Manufacturing Change. Provide replacement for Roll Rate
Sensor Flex.
SB501-1860-9 Service Bulletin - Manufacturing Change. Provide replacement for Yaw
Sensor Flex.

GH-3100
Installation & Operation Manual
TP-559 Front Section Page iii
Revision K March 30, 2017
PUBLICATION DESCRIPTION
SB501-1860-10 Service Bulletin - Release of 2.1 software in support of Gulfstream G450
program.
SB501-1860-11 Service Bulletin - Release Software 1.1. New features include the capability
to compensate IAS with DCM-3100 loaded constants K1 and K2.
SB501-1860-12 Service Bulletin - To reduce the possibility of the display blanking or failing at
start up.
SB501-1860-13 Service Bulletin - To reduce the possibility of the display blanking or
disruption.
SB501-1860-14 Service Bulletin - To prevent unrecoverable loss of alignment during dynamic
motion with units configured without heading sources.
SB501-1860-15 Service Bulletin - Provide replacement display due to diminishing source.
SB501-1860-16 Service Bulletin - Add SSEC disable to GH SSEC selection and removal of
fan failure warning. (Software load 2.2)
SB501-1860-17 Service Bulletin - Add SSEC disable to GH SSEC selection and removal of
fan failure warning. (Software load 2.2)
SB501-1860-18 Service Bulletin - To improve attitude performance when configured without
heading. Maintenance release to address open action items.
SB501-1860-19 Service Bulletin - Provide replacement display due to diminishing source.
SB501-1860-20 Service Bulletin - Software update to correct alignment error at startup as a
result of power sequencing. This condition only affects units configured for
ARINC 429 heading input source using the following DCM-3100 part
numbers:
SB501-1860-20AWG Service Bulletin – (Agusta Westland only) Software update to correct
alignment error at startup as a result of power sequencing. T
his condition only
affects units configured for ARINC 429 heading input source using the
following DCM-3100 part numbers:
SB501-1860-21 Service Bulletin - This product may have a suspected unapproved part (SUP)
installed. This service bulletin creates an inspection MOD, effective at next
service, which identifies units that have had this condition corrected.
SB501-1860-22 Service Bulletin – (501-1860-2103 only) To incorporate quick disconnect
fittings to Static Pressure Port (MS33649-05) and Total Pressure Port
(MS33649-04).
SB501-1860-23 Service Bulletin - Inspect for suspect unapproved part (SUP).

GH-3100
Installation & Operation Manual
Page iv Front Section TP-559
March 30, 2017 Revision K
List of Effective Pages
Dates of original and changed pages are:
Revision A ................................May 24, 2002
Change 1.......................October 10, 2002
Change 2..........................March 21, 2003
Revision B ............................August 02, 2004
Revision C..................................April 4, 2005
Revision D................................May 22, 2006
Revision E ..........................October 31, 2006
Revision F ..........................January 26, 2009
Revision G................................May 20, 2009
Revision H.........................February 23, 2010
Revision J........................ September 4, 2012
Revision K .............................March 30, 2017
Total number of pages in this publication consists of the following:
Title page
A Page
i thru x
1-1 thru 1-12
2-1 thru 2-12
3-1 thru 3-12
4-1 thru 4-6
5-1 thru 5-34
A-1 thru A-10
B-1 thru B-4
REVISION HIGHLIGHTS
Revision K is a republication. This republication completely replaces the existing manual. New and
revised material for the GH-3100 Installation Manual has been added. These changes include:
•Update company name and email/web site.
•Update frontmatter to current format.
•Pg. 2-1: Change 4 gauss to 5 gausses in caution.
•Pg. 2-3: Insert new step 8 for clamp torque settings.
•Pg. 1-10: Update information concerning the calibration test set and the MAT-3100.
Discard all previous revisions of this manual.

GH-3100
Installation & Operation Manual
TP-559 Front Section Page v
Revision K March 30, 2017
Table of Contents
Paragraph Page
Foreword.......................................................................................................................................................A
About This Manual......................................................................................................................................... i
References..................................................................................................................................................... i
List of Effective Pages...................................................................................................................................iv
Revision Highlights........................................................................................................................................iv
Table of Contents.......................................................................................................................................... v
List of Illustrations .......................................................................................................................................viii
List of Tables.................................................................................................................................................ix
List of Abbreviations...................................................................................................................................... x
SECTION 1
GENERAL INFORMATION
1.1 Introduction ...................................................................................................................................1-1
1.2 Functional description...................................................................................................................1-3
1.2.1 Electronic Standby Indicator (GH-3100).......................................................................................1-4
1.2.2 Detachable Configuration Module (DCM-3100)............................................................................1-5
1.2.3 Magnetometer (MAG-3000)..........................................................................................................1-5
1.2.4 Magnetometer (MAG-3100)..........................................................................................................1-5
1.3 Specifications................................................................................................................................1-6
1.3.1 GH-3100........................................................................................................................................1-6
1.3.2 DCM-3100.....................................................................................................................................1-8
1.4 Modifications and Software Revisions ..........................................................................................1-8
1.4.1 Software Release Summery .........................................................................................................1-8
1.5 Interfaces ......................................................................................................................................1-8
1.6 Equipment Required Not Supplied................................................................................................1-9
1.7 installation approval and Limitations...........................................................................................1-11

GH-3100
Installation & Operation Manual
Page vi Front Section TP-559
March 30, 2017 Revision K
Table of Contents (continued)
Paragraph Page
SECTION 2
INSTALLATION
2.1 Introduction ...................................................................................................................................2-1
2.2 Unpacking and inspecting.............................................................................................................2-1
2.2.1 Transport and Storage Considerations.........................................................................................2-1
2.3 Installation Procedures..................................................................................................................2-2
2.3.1 GH-3100 Electronic Standby Indicator..........................................................................................2-2
2.3.2 DCM-3100 Detachable Configuration Module..............................................................................2-3
2.3.3 Electrical Connections...................................................................................................................2-6
2.3.4 Installation Guidelines for MAG-3000 Magnetometer...................................................................2-7
2.3.5 Installation Guidelines for MAG-3100 Magnetometer...................................................................2-8
SECTION 3
INSTALLATION CHECKOUT
3.1 Introduction ...................................................................................................................................3-1
3.2 Post Installation Checks (Initial System Installation) ....................................................................3-1
3.2.1 Electronic Standby Indicator Check..............................................................................................3-1
3.2.2 Magnetometer Check....................................................................................................................3-2
3.2.3 Post Installation Checks (Remove and Replace Checkout).......................................................3-11
SECTION 4
MAINTENANCE
4.1 Introduction ...................................................................................................................................4-1
4.2 Continued Airworthiness...............................................................................................................4-1
4.2.1 Periodic Maintenance....................................................................................................................4-1
4.2.2 Pneumatic Pressure Checks.........................................................................................................4-1
4.3 Fault Isolation................................................................................................................................4-3
4.4 Return to Service ..........................................................................................................................4-5
4.5 Disposition of Failed Items............................................................................................................4-5
4.5.1 GH-3100 Electronic Standby Indicator..........................................................................................4-5
4.5.2 DCM-3100 Data Configuration Module.........................................................................................4-6
4.5.3 Magnetometer (MAG-3100 and MAG-3000).................................................................................4-6

GH-3100
Installation & Operation Manual
TP-559 Front Section Page vii
Revision K March 30, 2017
Table of Contents (continued)
Paragraph Page
SECTION 5
OPERATION
5.1 Introduction ...................................................................................................................................5-1
5.2 Functional Description...................................................................................................................5-1
5.2.1 Front Panel Controls.....................................................................................................................5-1
5.2.2 Menu Interface ..............................................................................................................................5-2
5.2.3 Operational Formats .....................................................................................................................5-7
5.2.4 Air Data Presentation..................................................................................................................5-12
5.2.5 Navigation Data...........................................................................................................................5-19
5.2.6 Heading Data..............................................................................................................................5-23
5.3 Operational Functions.................................................................................................................5-25
5.3.1 Power ON Sequence ..................................................................................................................5-25
5.3.2 Pitch and Roll Attitude Display....................................................................................................5-26
5.3.3 Slip / Skid Indicator .....................................................................................................................5-27
5.3.4 Air Data Display ..........................................................................................................................5-27
5.3.5 NAV Displays ..............................................................................................................................5-28
5.3.6 Magnetic Heading Display Data..................................................................................................5-34
APPENDIX A
GH-3100 INTERFACE SIGNAL NAME & CABLE CHARACTERISTICS
A.1 Introduction ...................................................................................................................................A-1
A.2 Digital Interface .............................................................................................................................A-1
A.2.1 ARINC 429 Input BUS...................................................................................................................A-1
A.2.2 CSDB Input BUS...........................................................................................................................A-2
A.2.3 RS-422 Input BUS.........................................................................................................................A-3
A.2.4 BUS Configuration Options...........................................................................................................A-3
A.3 Electronic Standby Indicator, [J1 connector] ................................................................................A-4
APPENDIX B
ENVIRONMENTAL QUALIFICATION FORM
B.1 GH-3100 & DCM-3100 Environmental Qualification Form...........................................................B-1

GH-3100
Installation & Operation Manual
Page viii Front Section TP-559
March 30, 2017 Revision K
List of Illustrations
Figure Page
1-1: GH-3100 Electronic Standby Instrument System...........................................................................1-2
1-2: JT-147A Calibration Test Set........................................................................................................1-11
2-1: DCM-3100 Outline Dimensions......................................................................................................2-3
2-2: GH-3100 Outline Dimensions and J1 Pin Assignments.................................................................2-4
2-3: GH-3100 Cable Assembly (J1).......................................................................................................2-6
2-4: System Electrical Interface Diagram with MAG-3000.....................................................................2-9
2-5: System Electrical Interface Diagram with MAG-3100...................................................................2-10
3-1: Example of Plane on Compass Rose.............................................................................................3-4
3-2: ILS Display......................................................................................................................................3-5
3-3: VOR Display ...................................................................................................................................3-6
3-4: DME Display ...................................................................................................................................3-6
3-5: FMS Display....................................................................................................................................3-7
3-6: TACAN Display...............................................................................................................................3-8
5-1: Indicator Front Panel.......................................................................................................................5-1
5-2: Attitude Display with Callouts .........................................................................................................5-7
5-3: Chevrons in Excessive Pitch Attitude Display ................................................................................5-8
5-4: Full Screen Attitude Failure Display..............................................................................................5-10
5-5: Processor Error Screens ..............................................................................................................5-11
5-6: Attitude Display with Airspeed and Altitude..................................................................................5-12
5-7: Altitude Displays ...........................................................................................................................5-13
5-8: Invalid Air Data Displays...............................................................................................................5-15
5-9: IAS Tape Displays ........................................................................................................................5-16
5-10: IAS Invalidity Displays ................................................................................................................5-18
5-11: VOR Mode with DME..................................................................................................................5-19
5-12: ILS Mode with DME....................................................................................................................5-20
5-13: FMS Mode ..................................................................................................................................5-20
5-14: TACAN Mode..............................................................................................................................5-21
5-15: Heading Tape, VOR Mode .........................................................................................................5-23
5-16: Heading Tape, FMS Mode..........................................................................................................5-23
5-17: Heading Invalidity with X.............................................................................................................5-24
5-18: Heading Invalidity with Box.........................................................................................................5-24
5-19: Example of ARINC 429 NAV & CSDB NAV Interconnect ..........................................................5-29