L3 Communications GH-3100 Manual

Pilot’s Guide
for the
Electronic Standby
Instrument System
Model GH-3100
Software Version 1.x and 3.x

Pilot’s Guide
Document Precedence
This Pilot’s Guide provides general information about the operation
of the GH-3100. Refer to your FAA-approved Airplane Flight Manual
(AFM) and its ight manual supplements for information specic to
your aircraft. If there is conicting information between the AFM and
this guide, the AFM takes precedence over this guide.
Disclaimer
This Pilot’s Guide is subject to change without notice. The illustrations
in this guide are typical to the GH-3100, but may not exactly match
your conguration options.
Export Notice
This data is provided at no charge, or at cost, to the public and is
considered publicly available, No License Required (NLR) as dened
in the Export Administration Regulations (EAR) Part 734.7-11.
Revision Note
Revision F improves the layout to accommodate binder holes, x minor
font errors, update MAG-3000 illustrations.
A

Pilot’s Guide
i
GH-3100
YOU HAVE AN IMAGE TO MAINTAIN!
WELCOME
Congratulations on your new purchase of the Avionics Systems GH-3100
(Software version 1.x or 3.x) Electronic Standby Instrument System (ESIS).
We are pleased to welcome you to the Avionics Systems family of high
quality avionics products that allow pilots to y more safely and with greater
condence. Compact and lightweight, the GH-3100 enables you to add the
latest safety innovations from Avionics Systems to today’s already overcrowded
cockpit panels.
BRIGHTER, TOUGHER, SMARTER, BETTER
Standby instrumentation is taking on a whole new attitude – with advanced
technologies; solid-state designs; reduced operating costs; and integrated
instrumentation. The Avionics Systems GH-3100 ESIS combines all the
important cues – attitude, altitude, airspeed, heading and navigation – in one
easy-to-read AMLCD. It’s like having a complete standby EFIS suite in a single
3-inch display. Designed by the world’s leader in standby instrumentation,
the FAA TSO certied GH-3100 offers the ability to visually match the look
and format of your aircraft’s primary EFIS.
ONE OF THE BEST PARTS – NO MOVING PARTS
A HISTORY OF LEADING EDGE INNOVATION
In addition to the GH-3100 ESIS, Avionics Systems also develops and
manufactures the RGC-350 Radar Graphics Computer, Stormscope® weather
mapping systems, Skywatch™Trafc Advisory System, TCAS I collision
avoidance systems, electromechanical standby attitude indicators and power
conversion products. Avionics Systems also maintains a global support network
at a number of factory-authorized service centers worldwide. Avionics Systems
is a division of L-3 Communications.
Introduction
The GH-3100 has easy-to-read symbology with digital simplicity assuring
precise readings and high reliability. The self-contained inertial measurement
cluster eliminates the need for a mechanical gyro. And best of all, it has
absolutely no moving parts. The high-performance GH-3100 provides
outstanding features such as precision attitude, altitude, airspeed, and heading;
reduced pilot workload; and improved ight safety. It combines the strengths of
at panel technology with solid-state sensors to become one of the world’s most
sophisticated standby instrument systems. The GH-3100 also features a full-
color, active matrix LCD; dimmable uorescent backlighting and a full range
of navigation interface capabilities, and the MAG-3000 Magnetometer.
Introduction

Pilot’s Guide
ii
GH-3100
Introduction............................................................................. i
Table of Contents .................................................................. ii
Purpose .................................................................................. 1
Equipment Description ......................................................... 2
Screen Features
Menu Access.......................................................................... 5
Barometric Setting ................................................................ 8
Attitude Information .............................................................. 9
Air Data Information.............................................................11
Navigational Information .................................................... 13
Heading Information............................................................ 16
Start-Up and Self Test
Power ON Self Test Mode ................................................... 17
Identication Mode.............................................................. 17
Sensor Alignment Mode ..................................................... 20
Normal Operating Mode (Invalidity Indications)............... 21
Troubleshooting .................................................................. 26
Specications ...................................................................... 28
Notes..................................................................................... 30
Pilot’s Guide for the GH-3100
Electronic Standby Instrument System
(Software Version 1.x & 3.x)
Part No. 501-1860-xxx1 & 501-1860-xxx3
© Copyright 2003, 2007, 2009
L-3 Avionics Systems, Inc.
5353 52nd Street, S.E.
Grand Rapids, MI USA 49512-9704
Customer Support [phone]
International [phone]
FAX [phone]
www.as.l-3com.com
Table of Contents
Table of Contents

Pilot’s Guide
1
GH-3100 Purpose
This Pilot’s Guide provides the ight crew with operation instructions,
quick reference troubleshooting assistance and typical display examples
so the cockpit crew can quickly and easily operate the GH-3100.
Actual appearance of display arrangements and colors are dependent
on the unit’s specic conguration as it is applied in specic aircraft
installations.
The Model GH-3100 ESIS (Electronic Standby Instrument System)
provides backup pitch, roll, and slip/skid information, and backup Air
Data information (airspeed, altitude and vertical speed) using internal
sensor systems. Also, the system contains interface capabilities that
provides Heading and Navigation information.
Purpose

Pilot’s Guide
2
GH-3100Purpose
Avionics Systems GH-3100 series ESIS’s are the only electronic
standby systems that include a Detachable Conguration Module
(DCM), which stores the display’s format conguration. The DCM
contains sufcient memory to retain information specic to the hardware
and software conguration for each installation, such as panel angle,
navigation interface, aircraft heading calibration, and display format.
When the GH-3100 is removed from the aircraft, the DCM remains in
the aircraft, attached to the aircraft wiring harness that mates with the
GH-3100, eliminating the need to re-congure a replaced GH-3100
Line Replaceable Unit (LRU).
GH-3100 Electronic Standby Instrument System
Equipment Description

Pilot’s Guide
3
GH-3100 Purpose
The GH-3100 is packaged in a 3 ATI housing, which needs only 11
inches of length behind the instrument panel. At a maximum weight of
4 pounds, the GH-3100 offers exceptional weight savings by combining
the functions of three existing instruments into one. The weight decrease
is up to half the weight of today’s typical electromechanical systems.
Equipment Description (cont.)

Pilot’s Guide
4
GH-3100Purpose
Equipment Description (cont.)
For standby magnetic heading capabilities, the optional MAG-3000
magnetometer can be added. The MAG-3000 is comprised of a 3-axis
magnetic sensor that converts magnetic eld data into a digital format
for the GH-3100 indicator. Heading information is displayed on a
horizontal tape at the bottom of the GH-3100 display.
The DCM-3100 is the memory device that stores the indicator’s display
conguration. The device remains in the aircraft to allow the removal
and replacement of the GH-3100 indicator unit, thus allowing automatic
conguration to the replacement unit.

Pilot’s Guide
5
GH-3100 Screen Features
Screen Features
Menu Access
The Model GH-3100 ESIS, regardless of conguration, offers crew
members the ability to toggle, adjust and initiate various display
elements via a Menu.
To access the Menu, press the Menu Access Button located below the
Display Screen.
A menu listing will appear along the bottom portion of the Display
Screen with four line items visible at a time. Rotate the Adjustment
Knob, located below and to the right of the Display Screen, to scroll
through the Menu and highlight a Menu item.
Menu items that Toggle ON/OFF will indicate opposite the current
condition.
Menu Items that are followed by indicate that an associated
Sub-Menu will appear when selected.

Pilot’s Guide
6
GH-3100Screen Features
Menu Access (cont.)
To select a highlighted Menu item, press the Adjustment Knob located
below and to the right of the Display Screen.
A Sub-Menu provides additional adjustments and selections. To select
or adjust a value in the Sub-Menu, rotate the Adjustment Knob.
To Toggle ON/OFF, initiate a highlighted Menu item, or to nalize an
adjusted value, press the Adjustment Knob.
Menu access will terminate when a setting is initiated or by pressing
the Menu Access Button. Menu access termination will occur
automatically after 15-20 seconds of inactivity.

Pilot’s Guide
7
GH-3100 Screen Features
NOTE: Menu item appearance is dependent on the unit’s specic conguration. The
last selected settings remain after power is cycled. FAST ERECT and FAST ALIGN
commands are similar to CAGING an electromechanical attitude indicator. Both
commands must be performed when the aircraft is stationary or in straight and level,
non-accelerated ight. FAST ALIGN will require straight and level, non-accelerated
ight sustained for 90 seconds. * Appears with loss of Magnetometer.
Menu Access (cont.)
Press Menu Access Button, Rotate Adjustment Knob to...
FAST ERECT ... press knob to initiate
SET BRIGHTNESS OFFSET ... press knob for sub-menu, rotate
knob to adjust, press knob to nish
FAST ALIGN ... press knob to initiate
*SET HEADING ... press knob for sub-menu, rotate
knob to set heading, press knob to
NAV ...
[ON or OFF]
press knob to toggle for opposite of
current condition
NAV MODE ... press knob for sub-menu, rotate
knob to select mode, press knob to
SET CRS ... press knob for sub-menu, rotate
knob to set course, press knob to
ILS ...
[BC or NORMAL]
press knob to toggle for opposite of
current condition
CRS AUTO CENTER ... press to initiate
NAV DISPLAYS ... press knob for sub-menu, rotate
knob to select, press knob to nish
BARO TYPE ... press knob for sub-menu, rotate
knob to select type, press knob to
IAS TAPE DIRECTION...
[UP or DOWN]
press knob to toggle for opposite of
current condition

Pilot’s Guide
8
GH-3100Screen Features
Barometric Setting
The Barometric Setting is indicated at the uppermost, right-hand corner
of the Display Screen.
Barometric Setting adjustments are made by rotating the Adjustment
Knob located below and to the right of the Display Screen.
To establish Standard Pressure Barometric Setting, (29.92 InHg/1013
HPA or MB), push the Adjustment Knob. STD will be indicated at
the Barometric Setting window.
Menu access will allow the ight crew to select barometric types as
Inches of Mercury (in), Hectopascals (hPa), or Millibars (mb).
See page 5.

Pilot’s Guide
9
GH-3100 Screen Features
Attitude Information
Aircraft Attitude
Information is provided
in the center portion of
the Display Screen. Pitch
and roll data is generated
by internal sensors that
produce recognizable
attitude indications.
Attitude information is displayed in a manner similar to traditional
Articial Horizon and Slip/Skid Indicators

Pilot’s Guide
10
GH-3100Screen Features
Attitude Information (cont.)
An Extended Maneuver indication will appear as a
message whenever the GH-3100 detects a long-duration attitude event
(e.g. ight for a duration exceeding 6 minutes at a roll angle >7° from
level).
Also, the indication will appear when the unit senses it is not within ±8°
of the magnetic heading provided by the Magnetometer for an extended
period (when the unit is congured for Heading).
These “extended” conditions may increase the possibility for erroneous
Attitude and Heading displays.
The GH-3100 will self-correct for small Attitude errors, or the ight
crew may initiate a FAST ERECT from the Menu (see page 7) when
the aircraft has returned to straight and level, non-accelerated ight.
If the GH-3100 continues to display erroneous attitude, the ight
crew may then initiate a FAST ALIGN from the Menu (page 7) when
the aircraft has returned to straight and level, non-accelerated ight
sustained for 90 seconds. The GH-3100 will display the Alignment in
Progress Screen (see page 19) with a 90 second countdown.
The GH-3100 will self-correct for minor Heading errors, or the ight
crew can use the Menu access (see page 7) to select “Set Heading...”
option to align the Heading Tape to the cockpit compass.

Pilot’s Guide
11
GH-3100 Screen Features
Air Data Information
The GH-3100 has the capability to display Air Data Information. Air
Data information includes aircraft Altitude, Airspeed, and Vertical
Speed information. Airspeed and Altitude information is displayed
in a scrolling “Tape” format with “Digital Readout” windows
available for airspeed,
altitude, vertical speed,
and metric equivalent
altitude (dependent on
unit conguration).
Altitude Information is located on the right side of the Display Screen.
The appearance of the Digital Readouts and Altitude Tapes is dependent
upon the specic conguration for the GH-3100.
Possible Altitude Readouts

Pilot’s Guide
12
GH-3100Screen Features
Possible Airspeed Readouts
Air Data Information (cont.)
Airspeed Information is located on the left side of the Display Screen.
The appearance of the Digital Readouts and Airspeed Tapes is dependent
upon the specic conguration for the GH-3100.

Pilot’s Guide
13
GH-3100 Screen Features
Navigation Information
Navigation Information is displayed in the center portion of the Display
Screen, sharing space with the Attitude Information. Navigation
displays are designed to visually match the look and format of the
primary navigational systems in the cockpit.
Crew member inputs, i.e. frequency and station selections, are made at
the source navigational units, with exception to those Navigation items
congured for and available through the Menu access (see page 5).

Pilot’s Guide
14
GH-3100Screen Features
Navigation Information (cont.)

Pilot’s Guide
15
GH-3100 Screen Features
Attitude Declutter, the removal of Navigation Information from the
screen, will occur when the aircraft exceeds ±65° of center in roll and/or
+30°/-20° of center in pitch. Navigation Information will be restored
when the aircraft no longer exceeds these conditions.
Navigation Information (cont.)
Software Versions and Navigation Conguration Options
Unit with 1.x software and congured for ARINC 710 ILS Receiver
will have the VOR/ILS NAV Mode replaced with ILS Mode in the
sub-menu.
Unit with 3.x software and congured for ARINC 710 ILS Receiver
will have the rst VOR/ILS NAV Mode replaced with ILS Mode in the
sub-menu and the second VOR/ILS NAV Mode replaced with VOR
Mode in the sub-menu.

Pilot’s Guide
16
GH-3100Screen Features
Heading Information
When congured for Heading Information, the GH-3100 will display a
Heading Tape at the bottom-center portion of the Display Screen.
A DG (directional gyro) indication will appear above the Heading Tape
Index Line when there is a temporary loss of the external magnetic
source or (MAG-3000) or external heading source.
If the DG indication continues, use the Menu access to select the “Set
Heading...” option and align the Heading Tape to the cockpit reference
compass. See page 7.
The “To” arrow will point up on the Heading Tape at the selected
course setting.
The “From” arrow points down on the tape at 180° of the course
setting. See page 7 for “Set CRS” and “CRS Auto Center” Menu
options.
If the GH-3100 is congured for Navigation capabilities and the Menu
selections are made for VOR, ILS, FMS/NAV or TACAN, the Course
Arrow is indicated on the Heading tape.