Appareo Systems Stratus ES User manual

This document and the information
contained herein are the property of
Appareo Systems, LLC and are
confidential. They may not be disseminated
or redistributed without the written
permission of Appareo Systems, LLC
APPAREO SYSTEMS, LLC
FARGO, NORTH DAKOTA 58102
Stratus ES/ESG Installation Instructions
Document Number
600840-000031
Document Type
Certification
Last Revised
22 June 2017
Rev
2.1
Sheet
1 of 44
Stratus ES/ESG
Installation Instructions
Revision 2.1

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 2 of 44
STRATUS ES AND STRATUS ESG
©2015-2017 Appareo Systems, LLC. All Rights Reserved.
Stratus ES/ESG Installation Instructions. All content within is copyrighted by Appareo
Systems, LLC, and may not be reprinted without permission.
Appareo assumes no responsibility or liability for any errors or inaccuracies that may appear in
the information content contained in this guide. Unauthorized replication of this guide is
prohibited.
Appareo, Appareo Systems, Stratus ES, Stratus ESG, and the Appareo and Stratus logos are
either registered trademarks or trademarks of Appareo Systems, LLC. All other trademarks and
registered trademarks are the sole property of their respective owners.
Appareo Systems, LLC, 1830 NDSU Research Circle North, Fargo, ND 58102 USA.
Technical Assistance
Visit us on the web at www.appareo.com. For support, please contact Appareo at
[email protected]m.
By mail:
1830 NDSU Research Circle North
Fargo, ND 58102
United States of America
Warranty
To view the Stratus ES/ESG warranty, log into the Appareo Dealer Portal or visit
www.appareo.com/resources.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 3 of 44
Table of Contents
Warnings.................................................................................................................................... 6
Related Documentation.............................................................................................................. 8
Vendor Information .................................................................................................................... 8
Abbreviations, Terms, and Definitions........................................................................................ 9
1. About Stratus ES/ESG........................................................................................................11
1.1. Overview.................................................................................................................11
1.2. TSO and FCC compliance.......................................................................................11
1.3. TSO deviations........................................................................................................11
1.4. Non-TSO functions..................................................................................................12
1.5. Environmental qualifications....................................................................................12
1.6. Criticality level .........................................................................................................12
1.7. Embedded Hardware and Software.........................................................................13
1.8. Equipment specifications.........................................................................................13
1.9. Required tools.........................................................................................................14
1.10. Required hardware..................................................................................................15
1.11. Compatible equipment.............................................................................................15
2. Installing Stratus ES/ESG....................................................................................................18
2.1. Unpacking/inspection requirements.........................................................................18
2.2. Limitations for installation........................................................................................18
2.3. Backplate and rack installation................................................................................18
2.4. Unit installation........................................................................................................19
2.5. Cleaning..................................................................................................................19
2.6. Circuit protective device marking.............................................................................19
3. Cabling and wiring...............................................................................................................20
3.1. Cabling and wiring specifications.............................................................................20
3.2. Pins.........................................................................................................................20
3.3. Connecting antennas and position source...............................................................24
4. Configuring Stratus ES/ESG ...............................................................................................24
4.1. ICAO address..........................................................................................................25
4.2. VFR squawk............................................................................................................25
4.3. Aircraft registration..................................................................................................25
4.4. Aircraft airspeed category........................................................................................25
4.5. Aircraft category......................................................................................................25
4.6. Aircraft length..........................................................................................................25
4.7. Aircraft width ...........................................................................................................25
4.8. Altitude format.........................................................................................................26
4.9. Squat switch............................................................................................................26

600840-000031 Stratus ES/ESG Installation Instructions
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Last Revised: June 22, 2017
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4.10. Altitude source.........................................................................................................26
4.11. Backlight source......................................................................................................26
4.12. Backlight slope........................................................................................................26
4.13. Backlight offset........................................................................................................26
4.14. Backlight response time ..........................................................................................27
4.15. GPS antenna lateral offset ......................................................................................27
4.16. GPS antenna longitudinal offset ..............................................................................27
4.17. ADS-B In capability .................................................................................................27
4.18. SBAS service provider (Stratus ESG only)..............................................................28
4.19. Diagnostic screens..................................................................................................28
5. Functional tests...................................................................................................................30
5.1. Power bus...............................................................................................................31
5.2. Discrete inputs.........................................................................................................31
5.3. Analog inputs ..........................................................................................................31
5.4. Altitude....................................................................................................................32
5.5. EMI check ...............................................................................................................32
5.6. Compass swing test ................................................................................................34
5.7. Weight and balance.................................................................................................34
5.8. Flight test.................................................................................................................35
6. Using Stratus ES/ESG ........................................................................................................35
6.1. Mode selection keys................................................................................................35
6.2. Event indicators.......................................................................................................36
6.3. FUNC key................................................................................................................36
6.4. Other keys...............................................................................................................37
6.5. Entering a squawk code..........................................................................................38
6.6. Entering the flight identification number...................................................................38
7. Troubleshooting ..................................................................................................................39
Appendix A ...............................................................................................................................42

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 5 of 44
List of Figures
Figure 1: Locking mechanism location......................................................................................19
Figure 2: Pin-out .......................................................................................................................21
Figure 3: Ambient light sensor location .....................................................................................31
Figure 4: Stratus ES/ESG front panel........................................................................................35
Figure 5: Pressure Altitude screen............................................................................................36
Figure 6: GPS screen................................................................................................................36
Figure 7: Flight ID screen..........................................................................................................36
Figure 8: Brightness screen ......................................................................................................37
Figure 9: Flight ID entry screen.................................................................................................38
List of Tables
Table 1: TSO compliance..........................................................................................................11
Table 2: TSO deviations............................................................................................................11
Table 3: Criticality level.............................................................................................................12
Table 4: Software......................................................................................................................13
Table 5: Equipment dimensions................................................................................................13
Table 6: Equipment weight........................................................................................................13
Table 7: Electrical specifications...............................................................................................14
Table 8: Power requirements....................................................................................................14
Table 9: Required tools.............................................................................................................14
Table 10: Required hardware (supplied parts) ..........................................................................15
Table 11: Required hardware (additional parts).........................................................................15
Table 12: Compatible GPS antenna..........................................................................................16
Table 13: Compatible transponder antenna ..............................................................................17
Table 14: Pin assignments........................................................................................................21
Table 15: Power pin assignments.............................................................................................21
Table 16: Parallel altitude encoder pin assignments .................................................................22
Table 17: Serial altitude encoder pin assignments....................................................................22
Table 18: Suppression pin assignments....................................................................................23
Table 19: Aircraft lighting bus pin assignments .........................................................................23
Table 20: External IDENT pin assignment.................................................................................23
Table 21: External standby pin assignment...............................................................................23
Table 22: Squat switch pin assignment.....................................................................................24
Table 23: Keys used during configuration .................................................................................24
Table 24: BIT diagnostic codes.................................................................................................30
Table 25: Mode selection keys..................................................................................................35
Table 26: Event indicators.........................................................................................................36
Table 27: DO-160G tests performed.........................................................................................44

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 6 of 44
Warnings
The pilot must read the Stratus ES/ESG Pilot’s Guide (600890-000049) before their first
flight.
Squawk codes 7500 (hijacking), 7600 (radio failure), and 7700 (emergency) are
reserved for emergencies. There may be other reserved codes, depending on the region
you are flying in. It is the pilot in command’s responsibility to comply with their
jurisdiction's operating rules and regulations.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 7 of 44
Record of Revision
Revision
Number
Change Description
Revision
Date
Inserted By
1.0
Initial Release
5/29/15
AAL
1.1
CM 10281
1/06/16
AAL
1.2
CM 10323
1/13/16
AAL
1.3
CM 10633
2/09/16
AAL
1.4
CM 11303
5/10/16
AAL
1.5
CM 11511
6/08/16
AAL
2.0
Removed warranty; fixed typo in 1.11.2; added
table to 4.10; moved table of
contents/figures/tables; added URL to 1.1, added
Stratus ES information
3/28/17
AAL
2.1
Added additional parts, compatible GPS position
sources, added weight & balance information
6/22/17
AAL

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 8 of 44
Related Documentation
Document Number
Title
Appareo 600845-000024
Stratus ES/ESG Maintenance Manual
Appareo 600890-000049
Stratus ES/ESG Pilot’s Guide
Appareo 601837-000024
Stratus ES/ESG Installation and Wiring Drawings
FAA AC 20-165B
Airworthiness Approval of Automatic Dependent Surveillance -
Broadcast OUT Systems
FAA AC 43.13-1B
Acceptable Methods, Techniques, and Practices - Aircraft
Inspection and Repair
FAA AC 43.13-2B
Acceptable Methods, Techniques, and Practices - Aircraft
Alterations
RTCA DO-160G
Environmental Conditions and Test Procedures for Airborne
Equipment
Vendor Information
Part
Vendor
Contact Information
42G15A-XT-1 (GPS antenna)
ANTCOM
Antcom Corporation
367 Van Ness Way, Suite 602
Torrance, California 90501
Phone: [phone]
http://www.antcom.com
AV-74 (transponder antenna)
RAMI
Rami
14500 168th Avenue
P.O. Box 858
Grand Haven, MI 49417
Phone: [phone]
http://www.rami.com

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 9 of 44
Abbreviations, Terms, and Definitions
Abbreviation
Term
Definition
AC
Advisory Circular
Document provided by the FAA that provides airworthiness
recommendations.
ACO
Aircraft
Certification Office
Branch of the FAA that works with the applications for
certifications.
ADS-B
Automatic
Dependent
Surveillance -
Broadcast
Technology implemented by the FAA to provide surveillance and
improved situational awareness to both pilots and air traffic
controllers.
ATC
Air Traffic Control
Service that directs aircraft on the ground and through controlled
airspace.
ATCRBS
Air Traffic Control
Radar Beacon
System
The surveillance system used by Air Traffic Control to augment
radar operations.
BIT
Built In Test
A series of tests performed on start up to monitor the function of
the equipment.
CFR
Code of Federal
Regulations
Codification of the general and permanent rules and regulations
published in the Federal Register by the executive departments
and agencies of the United States Federal government.
EMI
Electromagnetic
interference
Type of test conducted to ensure system performance when in
an electromagnetic environment.
ES
Extended Squitter
A periodic message that provides position, velocity, and time.
Part of the marketing name for Stratus ES.
ESG
Extended Squitter
and GPS
Part of the marketing name for Stratus ESG.
FAA
Federal Aviation
Administration
Agency of the United States Department of Transportation with
authority to regulate and oversee all aspects of civil aviation in
the United States.
FCC
Federal
Communications
Commission
Branch of the government responsible for controlling the
regulations around electronic equipment.
FMS
Flight
Management
System
System that automates the aircraft’s flight plan.
GPS
Global Positioning
System
Satellite-based navigation system that provides location and
time information.
HF
High Frequency
Range of frequency between 3 MHz to 30 MHz.
Hz
Hertz
Unit of frequency based upon cycles per second.
IDENT
IDENT
(Identification)
Transponder feature that allows for aircraft to be uniquely
identified by Air Traffic Control by pulsing the aircraft’s reply on
ATC’s monitors for 18 seconds.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 10 of 44
MHz
Megahertz
1,000,000 hertz.
SBAS
Satellite-Based
Augmentation
System
System of satellites that augments existing satellite systems and
provides increased position accuracy.
STC
Supplemental
Type Certificate
Type Certificate issued when an applicant has received FAA
approval to modify an aircraft from its original design.
TIS-B
Traffic Information
Service-Broadcast
Aviation information service broadcast provided to aircraft using
both 1090 MHz ES and UAT.
TSO
Technical
Standard Order
Minimum performance standard for specified materials, parts,
and appliances used on civil aircraft (FAA definition).
VFR
Visual Flight
Rules
A set of regulations for flying in which the pilot flies without using
instruments in generally clear meteorological conditions.
VHF
Very High
Frequency
Range of frequency between 30 MHz to 300 MHz.
WAAS
Wide Area
Augmentation
System
System of ground-based antennas whose precisely known
locations are used to correct satellite signals and provide greater
positional and integrity of service to aircraft in flight.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 11 of 44
1. About Stratus ES/ESG
1.1. Overview
Stratus ES and Stratus ESG by Appareo are panel-mounted level 2els Class 1 Extended
Squitter transponders. They are Class B1S transponders which are ADS-B Out compliant.
Stratus ES and Stratus ESG respond to legacy Mode A/C interrogations and Mode S
interrogations from both ground radar and airborne collision avoidance systems. To support the
ADS-B Out function, Stratus ESG also contains a Class Beta 1 GPS/WAAS receiver. Stratus ES
receives GPS information from approved GPS position sources.
Stratus ES/ESG may be referred to as “transponder” unless product differences require them to
be identified separately.
The most recent version of this document and other Stratus ES/ESG documentation can be
found on the Appareo Dealer Portal or at www.appareo.com/resources.
1.2. TSO and FCC compliance
TSO
Stratus ES/ESG is compliant with the following Technical Standard Orders:
Reference/Issue
Title
FAA TSO-C112e
Technical Standard Order: Air Traffic Control Radar Beacon
System/Mode Select (ATCRBS / Mode S) Airborne Equipment
FAA TSO-C145d
(Stratus ESG only)
Technical Standard Order: Airborne Navigation Sensors Using The
Global Positioning System
FAA TSO-C166b
Technical Standard Order: Extended Squitter Automatic Dependent
Surveillance - Broadcast (ADS-B) and Traffic Information Service -
Broadcast (TIS-B) Equipment Operating on the Radio Frequency of
1090 Megahertz (MHz)
Table 1: TSO compliance
FCC
Stratus ES/ESG has an FCC ID of 2AETC-1505005.
1.3. TSO deviations
TSO
Section
Deviation
TSO-C145d
(Stratus ESG only)
Section 3, Subpart D
Environmental qualification testing was
performed to DO-160G, not DO-160E.
Table 2: TSO deviations

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Rev. 2.1
Last Revised: June 22, 2017
Page 12 of 44
1.4. Non-TSO functions
Below are Stratus ES/ESG’s non-TSO functions:
VFR key (and configuration).
This non-TSO function does not interfere with Stratus ES/ESG’s compliance with the
requirements of the TSOs listed in Section 1.2.
1.5. Environmental qualifications
Stratus ES/ESG is tested to DO-160G. The Stratus ES/ESG Environmental Qualification form is
found in Appendix A of this document.
1.6. Criticality level
Software level determination is based on the Functional Hazard Assessment (FHA) and
Preliminary System Safety Assessment (PSSA). These assessments determined that the most
severe failure conditions (see Table 3) are classified as Major. As such, the Software Assurance
Level has been determined to be Major.
Major failure conditions would reduce the capability of the aircraft or the ability of the crew to
cope with adverse operating conditions to the extent that it would be a significant reduction in
safety margins or functional capabilities or a significant increase in crew workload. Software
whose anomalous behavior would cause or contribute to a failure of the system function
resulting in a Major failure condition for the aircraft is identified as Level C.
Function
Description
Classification
ATCRBS / Mode S
Transponder
Malfunction of the ATCRBS / Mode S
transponder function without warning
Major
ADS-B Out
Broadcast of incorrect ADS-B messages
without warning
Major
GPS/SBAS Receiver
(Stratus ESG only)
Loss or malfunction of the GPS/SBAS receiver
function
Major
Pressure Altitude Output
Failure of the pressure altitude output function
Major
RF Feed-Through
Malfunction of the RF feed-through function
without warning
Major
Table 3: Criticality level

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 13 of 44
1.7. Embedded Hardware and Software
The embedded hardware and software information listed below is current as of the time of
publication of this document.
Description
Part number
Revision
(or later FAA approved)
Embedded Hardware (FPGA)
501010-000109
R04
Software (DSC)
501010-000113
R06
Table 4: Software
1.8. Equipment specifications
Equipment dimensions
Characteristic
Dimension
Bezel Width
6.38 inches (162 mm)
Bezel Height
1.69 inches (43 mm)
Rack Width
6.32 inches (160.4 mm)
Rack Height
1.65 inches (42 mm)
Depth from back of bezel to end of strain relief on rack
(not compensating for wire bend radius)
10.75 inches (273 mm)
Table 5: Equipment dimensions
Equipment weight
Component
Weight
Stratus ES/ESG Unit Weight
2.8 lbs. (1.3 kg)
Stratus ES/ESG Total Installed Weight
(Transponder with rack and connectors)
3.3 lbs. (1.5 kg)
Table 6: Equipment weight

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 14 of 44
Electrical specifications
Characteristic
Specification
Altitude
Up to 25,000 ft
External Suppression Input
Low ≤0.5 V
High ≥5 V (suppressed)
Mode A Capability
4096 Identification Codes
Mode C Altitude Capability
Parallel altitude encoder: up to 62,700 ft
Serial altitude encoder: up to 126,700 ft
Mode S Capability
Parallel altitude encoder: up to 62,700 ft
Serial altitude encoder: up to 126,700 ft
Operational Temperature Range
-20°C to +55°C
Receiver Frequency
1030 MHz
Receiver Sensitivity
-74 dBm nominal for 90% replies
Transmitter Frequency
1090 MHz ± 1 MHz
Transmitter Power
310 Watts nominal
Table 7: Electrical specifications
Power requirements
Characteristic
Specification
Input Voltage Range
11 to 36 VDC
Nominal Current Draw
0.28 A at 28 VDC
0.5 A at 14 VDC
Power Input
8 W Typical
59.5 W Max
Table 8: Power requirements
1.9. Required tools
The following tools are needed for installation of Stratus ES/ESG.
Tool
Part Number
Used For
3/32” hex driver
-
Securing locking mechanism
through the faceplate
External retaining ring pliers
-
RF pass through adapter
Crimp tool
M22520/2-01
DSUB pins
Positioner
M22520/2-08
DSUB pins
Insertion/Extraction tool
M81969/39-01
DSUB pins
Table 9: Required tools

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 15 of 44
1.10. Required hardware
The following parts are required for the installation of Stratus ES/ESG.
Supplied parts:
Item
Appareo Part
Number
Commercial Part
Number
Quantity
Backplate
153510-000015
-
1
Stratus ES Transponder
or
Stratus ESG Transponder
153510-000069
or
153510-000017
-
1
Stratus ES/ESG Rack
153540-000027
-
1
37 Pin DSUB Connector
251015-000074
M24308/2-4F
1
RF TNC Pass Through Adapter
(Stratus ESG only)
251015-000077
-
1
RF BNC Pass Through Adapter
251015-000078
-
1
Screw
356060-000007
-
6
Strain Relief Backshell
356070-000006
M85049/48-1-4F
1
Table 10: Required hardware (supplied parts)
Additional parts:
Item
Appareo Part
Number
Commercial Part
Number
Quantity
#6-32 x 100° Flat Head SS
Screw
-
MS24693C, AN507R
or other approved
fastener
6
Metal Hex Stop Nut *
-
MS21042-06
6
Monadnack Clip Nut 6-32*
-
294667
6
Table 11: Required hardware (additional parts)
*These parts are identified as usable components, but are not identified as the only components
that can be used. Installer must determine if the part is appropriate for specific installation or if
an alternate part is required.
1.11. Compatible equipment
Stratus ES/ESG requires input from the following:
Transponder antenna
GPS position source (Stratus ES) or GPS antenna (Stratus ESG)
Altitude encoder
This section describes the requirements for this equipment. Inputs from systems described
below may be pre-existing. If these systems do not exist or have specifications outside those
described, selection of new equipment will be required. These installation instructions do not

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 16 of 44
cover the installation of the antennas or other input sources, and they should be installed per
manufacturer’s instructions.
GPS
1.11.1.1. GPS position source (Stratus ES)
Stratus ES is compatible with the following GPS position sources:
Garmin 430W and 530W with software version 3.20 or later
Garmin 6XX and 7XX with software version 3.00 or later.
Avidyne IFD440 and IFD540 with software version 10.0.3.0 or later
Connect Stratus ES to an open RS232 serial port (out) on the GPS position source and use the
GPS position source to configure the port to use the ADSB+ protocol.
1.11.1.2. GPS antenna (Stratus ESG)
Stratus ESG requires an active antenna with the specifications of either TSO-C190 or
TSO-C144.
If meeting the specifications of TSO-C190, the GPS antenna must meet the following:
Powered at 5 Volts
Gain of 30 dB ± 5 dB
Qualified DO-160E Lightning, Zone 2A
Qualified DO-160E Icing, Category C
Alternatively, the following TSO-C144 antenna is compatible:
Manufacturer
Part Number
AntCom
42G15A-XT-1
Table 12: Compatible GPS antenna
The antenna should be installed using the antenna manufacturer’s instructions. The antenna
must also be installed at least 2 feet away from any other comm transmitter or transmitter
antenna in a location that does not break line of sight with satellites. Typical installation
locations are on the top of the aircraft or on the empennage with consideration for line of sight
with satellites.
Keep the antenna away from any protruding metal such as engines, propellers, other antenna
masts, landing gear (and/or doors), and access doors; breaks in the antenna's ground plane; or
anything that can affect the reception pattern. If mounted on a composite aircraft, a conductive
ground plane should be added to the aircraft. Additional information regarding location and
mounting of antenna can be found in FAA AC 43.13-2B, Chapter 3.
All wiring should have a cable loss of minimum 2 dB and maximum 7 dB. The standard
installation has 3 BNC/TNC connections. Any additional BNC/TNC connections should estimate
a 0.2 dB loss per connection and be taken into consideration for maximum dB loss.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 17 of 44
NOTE: Using RG400 the minimum cable length is 10 feet and the maximum length is 37 feet. If
the installation requires you to go outside of these length specifications, the selection of coax
should be 50 ohm.
These instructions do not cover the installation in a pressure vessel. If the manufacturer of the
antenna has installation approval on the aircraft, follow the manufacturer’s approved
instructions. Otherwise, seek other approval. Other provisions could be made by contacting your
Regional Aircraft Certification Office (ACO).
Transponder antenna
Stratus ES/ESG requires a passive antenna with the specifications of TSO-C74() or TSO-C66().
The following antenna is an example of an antenna that meets these specifications. The
installation is not limited to this antenna.
Manufacturer
Part Number
Rami
AV-74
Table 13: Compatible transponder antenna
The antenna should be installed using the antenna manufacturer’s instructions. The antenna
should be mounted vertically on the bottom of the aircraft and a minimum of:
6 feet away from DME antenna
3 feet away from ADF antenna or any other communication antenna
3 feet away from TCAS antenna
3 feet away from the transponder itself to prevent self-interference
Keep the antenna away from any protruding metal such as engines, propellers, other antenna
masts, landing gear (and/or doors), and access doors; breaks in the antenna's ground plane; or
anything that can affect the radiation pattern. If mounted on a composite aircraft, a conductive
ground plane should be added to the aircraft in order for the radiation pattern of the antenna to
be maximized. Additional information regarding location and mounting of antenna can be found
in FAA AC 43.13-2B, Chapter 3.
NOTE: A determination should be made whether the current cabling is acceptable for the
installation. Using RG400, the maximum cable length is 14 feet with a maximum of 2 dB loss. If
the installation requires more length, select other 50 ohm coax that will not exceed the
maximum of 2 dB loss.
Altitude encoder
Stratus ES/ESG requires input from an independent altitude encoder. Stratus ES/ESG will
connect to an encoder that has a Gillham (gray code) connection or a serial altitude encoder
output on a RS232 port. The altitude encoder must meet the performance requirements of TSO-
C88 (a or b). Serial altitude encoders must have Trimble/Garmin or Shadin/RMS protocol.
The altitude encoder should be installed using the altitude encoder manufacturer’s instructions.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 18 of 44
NOTE: The altitude encoder might have a longer power up time than Stratus ES/ESG. While the
altitude encoder powers up, the altitude field will be replaced by dashes. If the altitude encoder
has not powered up within five minutes, an error message will appear. Once the altitude
encoder is completely powered on and transmitting data, the error message will disappear.
2. Installing Stratus ES/ESG
2.1. Unpacking/inspection requirements
When unpacking Stratus ES/ESG, visually inspect for any damage to the unit or missing
components. If damage or missing parts are present, contact Appareo.
2.2. Limitations for installation
This article meets the minimum performance and quality control standards required by a
technical standard order (TSO). If you are installing this article on or in a specific type or class of
aircraft, you must obtain separate approval for installation.
The following limitations should be taken into consideration when installing Stratus ES/ESG.
Aircraft
Stratus ES/ESG may not be acceptable for installation on all aircraft makes and models.
Cooling air
Stratus ES/ESG does not require an air cooling system, nor does it have a duct to port air for a
system. Do not install Stratus ES/ESG near a heat source. An alternate method of cooling is
required if the unit must be installed near a heat source.
GPS
Stratus ESG cannot be used as a GPS position source for navigation for LNAV approaches
outside of SBAS coverage.
2.3. Backplate and rack installation
If the aircraft does not have a location already designated or a transponder has not been
removed for this installation, refer to FAA AC 43.13-2B, Chapter 2.
Refer to Stratus ES/ESG Installation and Wiring Drawings (601837-000024) to assemble the
mounting rack with the hardware specified in Table 10. Mount the rack to the aircraft using the
six holes on the side of the rack with the hardware specified in Table 11.
Refer to Section 1.8 for dimensions and weight information.
NOTE: For an optimal fit, mounting brackets may be required, but are not supplied. If additional
brackets are needed, they should be fabricated for each individual installation.
NOTE: Ensure that the unit is supported in the back. This may require additional support.

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 19 of 44
2.4. Unit installation
Figure 1: Locking mechanism location
1. Adjust the locking mechanism on the transponder using a 3/32 hex wrench so that
the front lobe is in a vertical position. Insert the unit by hand until it comes to a stop.
This occurs when the front lobe contacts the clearance slot of the install rack.
2. Tighten the locking mechanism clockwise with the 3/32 hex wrench until it is tight
and the connectors have mated. Do not overtighten. If the mechanism will not
tighten, verify that the transponder is properly seated in the rack. The unit is fully
seated when the unit does not move back when tightening the locking mechanism.
NOTE: Ensure that the transponder is seated as far back as possible against the
backplate so that there is a secure connection between the transponder and the
connectors.
To remove the Stratus ES/ESG assembly:
Turn the 3/32 hex wrench counter-clockwise on the locking mechanism through the
front of the transponder to loosen the lock until the transponder connectors
disconnect. Keep loosening the unit until it stops sliding out of the install rack. Do not
loosen any further. Pull out the transponder by hand.
2.5. Cleaning
Use a dry cloth to clean the transponder. If necessary, you can use a lightly damp cloth with a
solution of mild detergent. Do not use cleaners containing ammonia, acetone, or other strong
acids or bases to clean the transponder display or faceplate.
2.6. Circuit protective device marking
If Stratus ES/ESG is replacing an existing transponder, ensure that the circuit protective device
is sufficiently marked.
If Status ES/ESG is a new installation, ensure that the labeling is in accordance with AC 43.13-
2B, Chapter 2, Section 207, Sub-Section f., Paragraph (4).

600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.1
Last Revised: June 22, 2017
Page 20 of 44
3. Cabling and wiring
This section describes cabling and wiring specifications, pin-out information, and antenna and
GPS position source connection procedures.
3.1. Cabling and wiring specifications
Wiring is not supplied by Appareo. Use 22 gauge wire and install wiring in accordance with FAA
AC 43.13-1B and AC 43.13-2B. Wire length and routing will vary by installation. See
Stratus ES/ESG Installation and Wiring Drawings (601837-000024) for exact specifications.
Re-use of existing wiring is permitted, but it must be in compliance with these installation
instructions and with the Stratus ES/ESG wiring diagrams.
NOTE: Previously installed equipment may have additional components inline that could
impede the function of Stratus ES/ESG. Removal of those components is required.
CAUTION: Remove aircraft power before wiring to avoid damaging the device.
3.2. Pins
The following are the pin assignments and pin-out for Stratus ES/ESG.
NOTE: Not all pins will be used for all configurations. See the sub-sections below to determine
which pins will be used for your installation.
Stratus ES
Stratus ESG
Pin #
Pin Name
I/O
Pin #
Pin Name
I/O
1
Aircraft Ground
-
1
Aircraft Ground
-
2
Aircraft Power
-
2
Aircraft Power
-
3
RS232-RX
External GPS input
In
3
RS232-RX Maintenance
In
4
-
-
4
-
-
5
RS232-RX Altitude
In
5
RS232-RX Altitude
In
6
RS232-TX GPS 1PPS
Out
6
RS232-TX GPS 1PPS
Out
7
External Standby
In
7
External Standby
In
8
Software Update Enable
In
8
Software Update Enable
In
9
Altitude A1
In
9
Altitude A1
In
10
Altitude A4
In
10
Altitude A4
In
11
Altitude B2
In
11
Altitude B2
In
12
Altitude C1
In
12
Altitude C1
In
13
Altitude C4
In
13
Altitude C4
In
14
External Suppress In
In
14
External Suppress In
In
15
28V Lighting Bus HI
In
15
28V Lighting Bus HI
In
16
-
-
16
-
-
17
AUX +5V Power
Out
17
AUX +5V Power
Out