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Altitude Data System Installation Manual [复制链接]

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SANDIA aerospace, Inc.

3700 Osuna Rd. NE, Suite 711

Albuquerque, NM 87109

305186-00

Rev. 3

SAE5-35

Altitude Data System

Installation Manual

This document and the information contained herein is the proprietary data of SANDIA aerospace,

Inc. No part of this document may be transmitted, reproduced, or copied in any form or by any

means without the prior written consent of SANDIA aerospace, Inc. Due to SANDIA aerospace’s

continued product and quality improvement programs, information contained in this document is

subject to change without prior notice.

Copyright 2000 SANDIA aerospace, Inc., All rights reserved. Printed in USA

Revision Date Description Approval

-1 000908 Initial Release J. Fiala

-2 030722 ECN 3379 J. Fiala

-3 20040716 ECN 3429 J. Fiala

Record of Revisions

1

Table Of Contents

Record of Revisions .............................................................................................................. 1

Table of Contents ................................................................................................................ 2

List of Illustrations .............................................................................................................. 2

Section 1 - General Description .......................................................................................... 3

1.1 Introduction ............................................................................................................ 3

1.1.1 Product Description ....................................................................................... 3

1.2 Technical Characteristics ........................................................................................ 3

1.2.1 Physical Characteristics ................................................................................ 3

1.2.2 Operational Characteristics .......................................................................... 3

1.2.3 Gillham Grey Code Output........................................................................... 4

1.2.4 AIM Outputs ................................................................................................ 4

1.2.5 Discrete Inputs ............................................................................................. 4

1.2.6 RS-232 Outputs............................................................................................ 4

1.2.6.1 Standard Mode ..................................................................................... 4

1.2.6.2 Extended Mode..................................................................................... 5

1.2.7 Certification ................................................................................................... 5

Environmental Qualification Form ...................................................................................... 6

Section 2 - Installation Considerations ............................................................................... 7

2.1 Introduction ............................................................................................................ 7

2.2 Mounting Considerations ....................................................................................... 7

2.3 Cooling ................................................................................................................... 7

Section 3 - Installation Procedures ..................................................................................... 8

3.1 General ................................................................................................................... 8

3.2 Equipment Required ............................................................................................... 8

3.2.1 Equipment Supplied ....................................................................................... 8

3.2.2 Equipment Not Supplied .................................................................................. 8

3.2.3 AIM Annuciator ............................................................................................... 8

3.3 Mounting Tray Installation ......................................................................................... 8

3.4 Static Port Connection ........................................................................................... 9

3.5 Electrical Installation .............................................................................................. 9

3.6 Calibration ............................................................................................................ 14

3.6.1 Equipment Required .................................................................................... 14

3.6.2 Calibration Procedures ................................................................................. 15

3.6.3 Placarding .................................................................................................... 16

3.7 Continued Airworthiness ...................................................................................... 16

List Of Illustrations

Figure 3-1 SAE5-35 Outline Dimensions (with tray) ...................................................... 9

Figure 3-2 J4/J5 Connector Wiring ............................................................................... 11

Figure 3-3 J4/J5 Connector Hood Assembly ................................................................. 11

Figure 3-4 J4 Pinout ...................................................................................................... 12

Figure 3-5 J5 Pinout ...................................................................................................... 12

Figure 3-6 Interconnect To Popular Transponders ........................................................ 13

Figure 3-7 Interconnect to Garmin & UPSAT GPS and MX20 .................................... 14

Figure 3-8 SAE5-35 Adjustment ................................................................................... 16

Figure 3-9 Gillham Grey Code Chart ....................................................................... 17-19

2

Section 1 General Description

1.1 INTRODUCTION

This manual describes the installation of the SANDIA aerospace SAE5-35 Altitude Data System. It

is intended for use by FAA certified repair stations to install the SAE5-35 Altitude Data System and

includes both the mechanical and electrical installation information for the SAE5-35. Calibration and

checkout procedures are included. The installer should insure that all functions are operating according

to their intended purpose in their particular installation.

1.1.1 Product Description

The SAE5-35 is a solid state -1000 to 35,000 foot altitude data system that converts pressure altitude

into a digital output as set forth in the International Standard for SSR Pressure Altitude Transmission.

The data output of the SAE5-35 is referenced to 29.92 inch HG (1013 Millibars). The SAE5-

35 has been designed to provide altitude data to GPS and Terrain Awareness Systems in addition to

Mode C Transponders. The SAE5-35 outputs Gillham Grey Code to the transponder and two independent

RS232 digital outputs that can be used by GPS or other systems requiring this format.

Additionally, the SAE5-35 includes SANDIA aerospace’s exclusive Altitude In-flight Monitoring

(AIM) feature. With the addition of an optional panel mounted switch and annunciator the AIM

mode will monitor and advise the pilot if the aircraft deviates from a selected altitude.

1.2 TECHNICAL CHARACTERISTICS

1.2.1 Physical Characteristics

Width: 4.87” (5.11” with mounting tray)

Height: 1.06” (1.57” with mounting tray)

Depth: 4.74” (4.80” with mounting tray)

Weight: 0.7 lbs. (.86 lbs. with mounting tray)

1.2.2 Operational Characteristics

Operating Temp. -20o C to + 55o C

Altitude: 35,000 feet

Voltage: 11 - 32 Vdc

Current 1.0 amps maximum with heater on

<100 mA quiescent

Accuracy: +/- 50 feet Typical

Resolution: Grey Code 100’

RS232 10’

Burst Pressure 90 in Hg

Maximum Rate of Altitude Change: 12,000 Feet/Minute

3

1.2.3 Gillham Grey Code Outputs

a. 10 Bits available: D4, A4, A2, A1, B4, B2, B1, C4, C2, C1

b. Bit On Impedance: Less than 5 ohms

c. Bit Off Leakage: Less than 10uA

d. Maximum Current per bit: 20 mA

e. Minimum working current: 10 uA

f. Maximum voltage per bit: 50V

g. Minimum working voltage: 5V

h. Bit update rate: Less than 250 mS

i. Minimum strobe switching bandwidth: Greater than 10kHz

1.2.4 AIM Outputs

Maximum Lamp Current: 80 mA

Maximum off Voltage: 50V

1.2.5 Discrete Inputs

AIM SET, Strobe and RS232 Mode Select Inputs

Asserted: < 0.4 Vdc

Not Asserted: > 1.7 Vdc

Pull-up current: 150 uA

1.2.6 RS-232 Outputs

There are two modes of operation for the RS232 outputs. The Data Mode pin, J5 pin 4 selects the

data formats.

1.2.6.1 Standard Mode

When the Mode pin (J5 pin 4) is open:

a. Baud: 9600

b. Data bits: 8

c. Stop bit: 1

d. Parity: None

e. Output rate: 1 +/- .2 seconds

f. Message length: 11 bytes

g. Altitude resolution: 10 foot

h. Works with Garmin and Trimble GPS

4 305186-00

5

1.2.6.2 Extended Mode

When the Mode pin (J5 pin 4) is grounded:

a. Baud: 1200

b. Data bits: 8

c. Stop bit: 1

d. Parity: None

e. Output rate: 1 +/- .2 seconds

f. Message length: 17 bytes

g. Altitude resolution: 10 foot

h. Temperature resolution: 1 degree C

i. For use with UPSAT MX20 and GPS receivers

1.2.7 Certification

TSO: C88a

Software: DO-178B Level C

Environmental: DO-160D(C1)CAA[(SM)(UF)]XXXXXXZBBBBTBXXXX

Environmental Qualification Form for the SAE5-35 Altitude Data System

NOMENCLATURE: SAE5-35, Altitude Data System

TYPE/MODEL/PART NO: SAE5 – 35 / 305154-00

TSO NUMBER: C88a

MANUFACTURER’S SPECIFICATION AN/OR OTHER APPLICABLE SPECIFICATION:

SAE5-35 INSTALLATION MANUAL P/N 305186-00

QUALIFICATION TEST PLAN, SAE5-35 ALTITUDE ENCODER. P/N AENC0051

MANUFACTURER: SANDIA AEROSPACE

ADDRESS: 5445 EDITH BLVD. NE, SUITE I ALBUQUERQUE, NM 87107

REVISION & CHANGE NUMBER OF DO-160: REV D, DATED JULY 27 1997

CONDITIONS SECTION DESCRIPTION OF TESTS CONDUCTED

Temperature and Altitude

Low Temperature

High Temperature

In-Flight Loss of Cooling

Altitude

Decompression

Overpressure

4.0

4.5.1

4.5.2 & 4.5.3

4.5.4

4.6.1

4.6.2

4.6.3

Equipment Tested to Category C1

Tested to-20°C Operating Low Temp

Tested to +55°C Operating High Temp

Test not Applicable

35,000 feet

Test not Applicable

Test not Applicable

Temperature Variation 5.0 Tested to CategoryC

Humidity 6.0 Tested to CategoryA

Operational Shock and Crash Safety 7.0 Tested to CategoryA

Vibration 8.0 Tested to Category S, Aircraft Zone 2 using vibration curve M. Tested

to Category U, Helicopter Zone 2 using vibration curves F and F1.

Explosion 9.0 Equipment identified as Category X, no test performed

Waterproofness 10.0 Equipment identified as Category X, no test performed

Fluids Susceptibility 11.0 Equipment identified as Category X, no test performed

Sand and Dust 12.0 Equipment identified as Category X, no test performed

Fungus 13.0 Equipment identified as Category X, no test performed

Salt Spray 14.0 Equipment identified as Category X, no test performed

Magnetic Effect 15.0 Equipment is categoryZ

Power Input 16.0 Tested to CategoryB

Voltage Spike 17.0 Tested to CategoryB

Audio Frequency Susceptibility 18.0 Tested to CategoryB

Induced Signal Susceptibility 19.0 Tested to CategoryB

Radio Frequency Susceptibility 20.0 Tested to CategoryT

Radio Frequency Emission 21.0 Tested to CategoryB

Lighning Induced Transient Susceptibility22.0 Equipment identified as Category X, no test performed

Lightning Direct Effects 23.0 Equipment identified as Category X, no test performed

Icing 24.0 Equipment identified as Category X, no test performed

Electrostatic Discharge 25.0 Equipment identified as Category X, no test performed

6 305186-00

DATE OF TEST: July 2000

Section 2 Installation Considerations

2.1 INTRODUCTION

The SAE5-35 Altitude Data System simplifies installations that include GPS, Terrain Awareness

Systems and other avionics that require RS232 altitude input information. The SAE5-35

provides standard Gillham Grey Code output on its 15 pin connector. Grey code is required

for interface to Mode C ATCRBS and Mode S transponders. Two independent RS232

outputs are provided on the nine pin connector. The SAE5-35 also incorporates SANDIA

aerospace’s exclusive Altitude In-flight Monitoring (AIM) feature that advises pilots if they

deviate from their selected altitude by more than one hundred feet. The AIM feature can be

installed by purchasing SANDIA aerospace’s optional annunciator/switch assembly, P/N

305217-00. Or the installer can supply his own switch and annunciator assembly(s). The

main 15 pin connector follows the standard encoder interconnect used by many manufacturers.

By following this convention, upgrading to the SAE5-35 is made easier. If another

manufacturers encoder is being replaced, it is important to check the wiring information

before plugging the existing connector into the SAE5-35. Both the Grey Code output and

each of the RS232 outputs have separate drivers. This ensures that a load on one line does

not load the other. Additionally, the RS232 output is available even if the enable line on the

Grey Code has not been enabled by the transponder.

The SAE5-35 does not require warm up unless the outside temperature is below 20 degrees

C. When warm up time is required, the internal heater is capable of warming the SAE5-35

from -20 degrees C to operating temperature in less than two minutes.

2.2 MOUNTING CONSIDERATIONS

The SAE5-35 can be mounted in any axis and either inside or outside the pressure vessel.

Mounting should allow for as short a pressure line as possible from the encoder to the altimeter.

Be sure to allow an ample service loop on the cable to allow for calibration of the

SAE5-35

CAUTION: DO NOT mount the SAE5-35 in

the direct airstream or near either the hot or

cold air ducts.

2.3 COOLING

The SAE5-35 does not require external cooling.

7

3.1 GENERAL

The SAE5-35 is supplied with a mounting tray and solder type mating connectors. It is important

that proper solder techniques be observed in attaching wires to the mating connectors. Failure to do

so could result in a failure in the connection and cause intermittent or non operation of the SAE5-35.

Section 3 Installation Procedures

3.2 EQUIPMENT REQUIRED

3.2.1 Supplied

SAE5-35 System 705154-00

Includes: SAE5-35 Encoder 305154-00

SAE5-35 Installation Manual 305186-00

SAE5-35 Installation Kit 305216-00

15 Pin Mating Connector 305215

15 Pin Connector Hood 305208

9 Pin Mating Connector 305214

9 Pin Connector Hood 305207

Mounting Tray 305145

Knurled Holdown Nut 305189

3.2.2 Required but not supplied

Number 6-32 mounting screws

Static port fitting

3.2.3 Optional Equipment

AIM Annunciator, Installer supplied or Sandia Part Number 307217-00

3.3 MOUNTING TRAY INSTALLATION

The mounting tray is mounted to the airframe using either three or four number 6-32 screws. The

mounting hole pattern for the SAE5-35 mounting tray contains five holes. For new installations, it is

recommended that the four corner holes be used to mount the SAE5-35 tray. The fifth hole has been

added to facilitate upgrades from other manufactures encoders. Refer to the SAE5-35 tray dimensions

in Figure 3-1 to determine if the hole pattern of the removed system match the hole pattern of

the SAE5-35 mounting tray.

8 305186-00

3.4 STATIC PORT CONNECTION

A standard 1/8 - 27 NPT brass fitting is provided on the front plate of the encoder for attaching to the

aircraft static air system. An adapter may be used to convert this to match the aircraft static plumbing.

When attaching the mating fitting, make sure that it is secure and free from leaks that can induce

errors in the static system. In installations where an existing encoder is being replaced, the existing

tubing and fittings should be examined for any damage or deterioration and replaced if necessary. To

reduce the likelihood of the brass fitting rotating while installing the static lines, a “D” shaped hole is

used to mount the brass fitting into the front panel. Upon completion of installation of the SAE5-35, a

Case Leak test is to be performed per FAR Part 43 Appendix E

NOTE: Since significant force can be applied to the encoder

during static fitting installation, dual wrench techniques are always

recommended to avoid damage to the encoder.

3.5 ELECTRICAL INSTALLATION

The SAE5-35 is designed to operate from 11-32Vdc without any special wiring considerations.

Power can be supplied from the transponder’s switched A+ output, the transponder circuit breaker or

from the aircraft buss. If supplied from the aircraft buss, the line must be protected with a 2 amp fuse

Figure 3-1

SAE5-35 Outline Dimensions (with tray)

9

J4 J5

or circuit breaker. SAE document AS8003 Minimum Performance Standard for Automatic Pressure

Altitude Reporting Code Generating Equipment states that “a means shall be incorporated in the

equipment to indicate the loss of electrical power or the effect thereof, unless the electrical power to

operate the code generating equipment is supplied by an ATC Transponder which also supplies an

indication of this power loss.” This is typically accomplished by using the switched A+ output from

the transponder or by connecting the SAE5-35 power input to the transponder circuit breaker. Alternatively,

the two power pins, 8 and 14, are internally connected in the SAE5-35. Only one of these

connections is necessary to supply power to the unit. The unused connection can be used to drive a

panel-mounted indicator if desired.

All transponder functions including the Grey code output are on the 15 pin connector J4. The RS232

digital outputs for GPS and other avionics requiring this format as well as the AIM function are on

the 9 pin connector J5. The Grey code output on the transponder is disabled whenever Mode C on

the transponder is not selected.

Note: The RS232 serial data output is always present whenever

there is power to the SAE5-35 and the warm up time is completed,

even when the Strobe/Enable line is not grounded.

Note: If power is supplied from the transponder, the RS232 and

AIM functions will be inoperative when the transponder is turned

off or removed from the aircraft.

Grounding the Strobe/Enable line on J4 pin 6 will enable the transponder Grey code data. There are

three methods used to do this.

1. Permanently grounding this line.

2. The transponder provides a switched ground enable signal.

3. The transponder provides a strobe-ground enable signal.

The SAE5-35 is compatible with all three systems, refer to the appropriate transponder installation

manual for detail. Interconnect information for the most popular transponders can be found in Figure

3-6. For other makes of transponders, refer to the manufacturers installation manual.

Note: If the transponder being interfaced has a strobe output,

the AIM function will not operate properly and should not be

connected.

While several manufacturers use RS232 digital altitude data, their formats and baud rates may vary.

The SAE5-35 can accommodate most data formats by either grounding or leaving pin 4 on J5 open.

If pin 4 is left open, the output baud rate is 9600. If pin 4 is grounded, the output baud rate is 1200.

The RS232 interconnect information can be found in Figure 3-7.

Interconnect information for the most popular transponders can be found in Figures 3-6. The RS232

interconnect information can be found in Figure 3-7.

10 305186-00

Figure 3-2

J4/J5 Connector Wiring

Figure 3-3

J4/J5 Connector Hood Assembly

11

The SAE5-35 uses Sub-D solder cup connectors with screw lock assemblies. Proper wire attachment

and assembly of the screw locks and connector hood are shown in Figure 3-2 and 3-3. It is recommended

that each wire and solder cup be covered with a piece of shrink tubing or other insulator.

J4 J5

J4 Notes:

1. J4 is 15 Pin receptacle

2. Pin 6 may be strobed or permanently grounded.

Pin 6 must be grounded for AIM function to

be operational.

3. Power and ground wires (pins 8, 14 & 15) are

20 AWG. All other wires are 22AWG unless

otherwise noted.

4. Pin 8 and 14 are internally connected in the

SAE5-35. Only one line is necessary to supply

power to the unit. The unused power pin may

be used as a power loss indicator if desired.

5. The Garmin 430/530 must be set to Icarus

RS232 format.

J5 Notes:

1. J5 is 9 Pin receptacle

2. Maximum lamp current 80mA

3. All wires are 22AWG unless otherwise

noted.

4. AIM switch is a momentary contact

5. Ground pin 4 for 1200 baud

Leave pin 4 open for 9600 baud (see

Paragraph 1.2.6.1 & 1.2.6.2 for details).

6. If the AIM function uses annunciator

lamps provided by the installer, they

should be appropriately labeled. The

lamp connected to pin 9 should be

labeled ‘ALT’ and the lamp connected

to pin 8 should be labeled ‘SET’.

Figure 3-4

J4 Pinout

Figure 3-5

J5 Pinout

12 305186-00

SAE5-35

J4 Function Bendix

TPR2060

Bendix

TR641A/B

Cessna RT359T,

RT459A, RT859A

Garmin

GTX300

Series

Honeywell

KT70/71

(Connector

JKT701)

Honeywell

KT76A/78A

Honeywell

KXP

Narco

AT50/A,

AT150

Narco

AT5,

AT6/A

UPSAT

SL70

Wilcox

1014A

1 D4 No

Connection N 10 18 8 No

Connection V No

Connection

No

Connection 35 C

2 A1 4 A 14 3 M M G 7 2 13 k

3 A2 6 B 13 5 K K H 6 4 31 c

4 A4 8 C 15 6 J J J 8 8 12 W

5 B1 9 D 19 9 E E K 12 9 33 T

6 Strobe/Enable Aircraft

Ground

Aircraft

Ground 11 Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground 5 12 Aircraft

Ground

Aircraft

Ground

7 Ground Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

8 Aircraft Power Note1 Note1 9 or per

Note 1 Note 1 Note1 Note1 Note1 18 or per

Note 1

13 or per

Note 1 Note 1 Note1

9 B2 10 E 17 11 C C L 10 10 14 L

10 B4 11 F 16 12 B B M 9 11 32 D

11 C1 3 H 21 10 D D P 14 1 16 P

12 C4 7 K 20 7 H H S 13 5 15 Z

13 C2 5 J 18 4 L L R 11 3 34 f

14 Aircraft Power Note1 Note1 Note1 Note1 Note1 Note1 Note1 Note1 Note1 Note1 Note1

15 Aircraft Ground Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Aircraft

Ground

Figure 3-6

Interconnect for popular transponders

13

Notes:

1. The two power pins, 8 and 14, are internally connected in

the SAE5-35. Only one of these connections is necessary

to supply power to the unit. The unused connection can be

used to drive a panel-mounted indicator if desired.

SAE5-35

J5 Function

Garmin

430

P4001

Garmin

530

P5001

UPSAT

GX60/65

37 Pin Connector

UPSAT

MX20

P2

1 RS232 TX1 57 57 4or 21 21

2 RS232 TX2 Note1 Note1 Note1 Note1

3 N/C No Connection No Connection No Connection No Connection

4 RS232 Mode

Select No Connection No Connection Aircraft GroundAircraft Ground

5 RS232 Return 77 or 78 77 or 78 25 3

6 RS232 Shield Open

Note 3

Open

Note 3

Open

Note 3

Open

Note 3

7 AIM 'SET' Switch Note4 Note4 Note4 Note4

8 AIM 'SET' Lamp Note4 Note4 Note4 Note4

9 AIM

'ALT' Lamp Note 4 Note4 Note4 Note4

Figure 3-7

J5 interconnect With Garmin and UPSAT Systems

14

Notes:

1. The SAE5-35 has two independent RS232 outputs. RS232 TX2 can be connected to a

second sysytem in the same manner as RS232 TX1

2. The RS232 wires are 22 AWG twisted pair.

3. Shield grounds are ground at the SAE5-35 and open at the unit being interfaced.

4. See Figure 3-5 for AIM function interconnect wiring.

305186-00

3.6 CALIBRATION

The SAE5-35 is calibrated at the factory to a pressure datum traceable to the National Bureau of

Standards. However, when the encoder is installed in the aircraft it must be recalibrated to correspondence

to the primary flight altimeter, refer to FAR 91.217 and FAR 91.413 for details. This

calibration ensures that the altitude code generated from the SAE5-35 is within 125 feet of the altitude

displayed to the pilot.

3.6.1 Equipment Required

1. A calibrated pitot-static test set capable of pumping the system from –1000 feet up the

maximum test altitude.

2. A calibrated transponder ramp tester capable of displaying the encoder altitude information.

15

3.6.2 Calibration Procedures

Note: The Primary Flight Altimeter must be calibrated per

part 43 section E. Verify compliance with AC-43.13 as applicable.

1. Connect the pitot-static test set to the aircraft static system. The SAE5-35 must be

connected to the aircraft static line near the flight altimeter and the two altitude adjustments

buttons must be accessible. Apply power to the altitude encoder and the ATC

transponder and allow the encoder to stabilize. Set primary flight altimeter to 29.92

inches of mercury.

2. Apply vacuum from the pitot-static test set to obtain an altimeter reading of 34,800 feet

(or 100 feet below the maximum test altitude specified in Part 43, appendix F.)

3. Slowly increase altitude and note the flight altimeter at the encoder transition point. If the

transition point is not 34,850 +/- 30 feet (or between –80 feet and –20 feet below the

maximum test altitude), press the increase button (behind slot A) or decrease button

(behind slot B) until the encoder transition point is within tolerance.

4. Increase altitude to obtain an altimeter reading of 35,000 feet (or 100 feet above the

maximum altitude specified in Part 43, appendix F.)

5. Slowly decrease altitude and read the flight altimeter at the encoder transition point. Verify

the transition point is 34,950 +/- 30 feet (or between 20 feet and 80 feet above the maximum

test altitude.) If necessary, press the increase button (behind slot A) or decrease

button (behind slot B) until the encoder transition point is within tolerance.

6. Apply pressure from the pitot-static test set to obtain an altimeter reading of -800feet

7. Slowly decrease altitude and read the flight altimeter at the encoder –800 foot to –900-

transition point. If the transition point is higher than -880 feet, hold the increase altitude

button (behind slot A) while pressing and releasing the decrease altitude button (behind

slot B) until the transition point is –850 +/- 30feet. If the transition point is lower than -

820 feet, hold the decrease altitude button (behind slot B) while pressing and releasing the

increase altitude button (behind slot A) until the transition point is –850 +/- 30feet.

8. Apply pressure from the pitot-static test set to obtain an altimeter reading of -1000feet

9. Slowly increase altitude and read the flight altimeter at the encoder –1000 foot to –900-

transition point. If the transition point is higher than -920 feet, hold the increase altitude

button (behind slot A) while pressing and releasing the decrease altitude button (behind

slot B) until the transition point is –950 +/- 30 feet. If the transition point is lower than -

16

980 feet, hold the decrease altitude button (behind slot B) while pressing and releasing the

increase altitude button (behind slot A) until the transition point is –950 +/- 30 feet.

10. Repeat steps 2 through 10 until the transition points and the flight altimeter are within

tolerance for both low and high altitudes. Verify several test points throughout the range

to assure correspondence between the SAE5-35 and the flight altimeter.

305186-00

3.6.3 Placarding

We recommend that the altimeter used for flight reference and the SAE5-35 be placarded with the

following information:

Replacement or re-calibration of the altimeter used for flight

reference requires re-calibration of SAE5-35 Altitude Encoder.

Altitude encoded to feet.

Figure 3-8

SAE5-35 Adjustment

3.7 CONTINUED AIRWORTHINESS

The SAE5-35 requires calibration every 24 months per FAR 91.411. All other maintenance of the

SAE5-35 is on condition only.

OOPS !

The SAE5-35 can be reset to factory settings by appling power to

the unit while simultaneously pressing both adjustments A & B

17

Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4

-1000 0 0 0 0 0 0 0 0 1 0

-900 0 0 0 0 0 0 0 1 1 0

-800 0 0 0 0 0 0 0 1 0 0

-700 0 0 0 0 0 0 1 1 0 0

-600 0 0 0 0 0 0 1 1 1 0

-500 0 0 0 0 0 0 1 0 1 0

-400 0 0 0 0 0 0 1 0 1 1

-300 0 0 0 0 0 0 1 0 0 1

-200 0 0 0 0 0 1 1 0 0 1

-100 0 0 0 0 0 1 1 0 1 1

0 0 0 0 0 0 1 1 0 1 0

100 0 0 0 0 0 1 1 1 1 0

200 0 0 0 0 0 1 1 1 0 0

300 0 0 0 0 0 1 0 1 0 0

400 0 0 0 0 0 1 0 1 1 0

500 0 0 0 0 0 1 0 0 1 0

600 0 0 0 0 0 1 0 0 1 1

700 0 0 0 0 0 1 0 0 0 1

800 0 0 0 0 1 1 0 0 0 1

900 0 0 0 0 1 1 0 0 1 1

1000 0 0 0 0 1 1 0 0 1 0

1100 0 0 0 0 1 1 0 1 1 0

1200 0 0 0 0 1 1 0 1 0 0

1300 0 0 0 0 1 1 1 1 0 0

1400 0 0 0 0 1 1 1 1 1 0

1500 0 0 0 0 1 1 1 0 1 0

1600 0 0 0 0 1 1 1 0 1 1

1700 0 0 0 0 1 1 1 0 0 1

1800 0 0 0 0 1 0 1 0 0 1

1900 0 0 0 0 1 0 1 0 1 1

2000 0 0 0 0 1 0 1 0 1 0

2100 0 0 0 0 1 0 1 1 1 0

2200 0 0 0 0 1 0 1 1 0 0

2300 0 0 0 0 1 0 0 1 0 0

2400 0 0 0 0 1 0 0 1 1 0

2500 0 0 0 0 1 0 0 0 1 0

2600 0 0 0 0 1 0 0 0 1 1

2700 0 0 0 0 1 0 0 0 0 1

2800 0 0 0 1 1 0 0 0 0 1

2900 0 0 0 1 1 0 0 0 1 1

3000 0 0 0 1 1 0 0 0 1 0

3100 0 0 0 1 1 0 0 1 1 0

3200 0 0 0 1 1 0 0 1 0 0

3300 0 0 0 1 1 0 1 1 0 0

3400 0 0 0 1 1 0 1 1 1 0

3500 0 0 0 1 1 0 1 0 1 0

3600 0 0 0 1 1 0 1 0 1 1

3700 0 0 0 1 1 0 1 0 0 1

3800 0 0 0 1 1 1 1 0 0 1

3900 0 0 0 1 1 1 1 0 1 1

4000 0 0 0 1 1 1 1 0 1 0

4100 0 0 0 1 1 1 1 1 1 0

4200 0 0 0 1 1 1 1 1 0 0

4300 0 0 0 1 1 1 0 1 0 0

4400 0 0 0 1 1 1 0 1 1 0

4500 0 0 0 1 1 1 0 0 1 0

4600 0 0 0 1 1 1 0 0 1 1

4700 0 0 0 1 1 1 0 0 0 1

4800 0 0 0 1 0 1 0 0 0 1

4900 0 0 0 1 0 1 0 0 1 1

5000 0 0 0 1 0 1 0 0 1 0

5100 0 0 0 1 0 1 0 1 1 0

5200 0 0 0 1 0 1 0 1 0 0

5300 0 0 0 1 0 1 1 1 0 0

5400 0 0 0 1 0 1 1 1 1 0

5500 0 0 0 1 0 1 1 0 1 0

5600 0 0 0 1 0 1 1 0 1 1

5700 0 0 0 1 0 1 1 0 0 1

5800 0 0 0 1 0 0 1 0 0 1

5900 0 0 0 1 0 0 1 0 1 1

6000 0 0 0 1 0 0 1 0 1 0

6100 0 0 0 1 0 0 1 1 1 0

6200 0 0 0 1 0 0 1 1 0 0

6300 0 0 0 1 0 0 0 1 0 0

6400 0 0 0 1 0 0 0 1 1 0

6500 0 0 0 1 0 0 0 0 1 0

6600 0 0 0 1 0 0 0 0 1 1

6700 0 0 0 1 0 0 0 0 0 1

6800 0 0 1 1 0 0 0 0 0 1

6900 0 0 1 1 0 0 0 0 1 1

7000 0 0 1 1 0 0 0 0 1 0

7100 0 0 1 1 0 0 0 1 1 0

7200 0 0 1 1 0 0 0 1 0 0

7300 0 0 1 1 0 0 1 1 0 0

7400 0 0 1 1 0 0 1 1 1 0

7500 0 0 1 1 0 0 1 0 1 0

7600 0 0 1 1 0 0 1 0 1 1

7700 0 0 1 1 0 0 1 0 0 1

7800 0 0 1 1 0 1 1 0 0 1

7900 0 0 1 1 0 1 1 0 1 1

8000 0 0 1 1 0 1 1 0 1 0

8100 0 0 1 1 0 1 1 1 1 0

8200 0 0 1 1 0 1 1 1 0 0

8300 0 0 1 1 0 1 0 1 0 0

8400 0 0 1 1 0 1 0 1 1 0

8500 0 0 1 1 0 1 0 0 1 0

8600 0 0 1 1 0 1 0 0 1 1

8700 0 0 1 1 0 1 0 0 0 1

8800 0 0 1 1 1 1 0 0 0 1

8900 0 0 1 1 1 1 0 0 1 1

9000 0 0 1 1 1 1 0 0 1 0

9100 0 0 1 1 1 1 0 1 1 0

9200 0 0 1 1 1 1 0 1 0 0

9300 0 0 1 1 1 1 1 1 0 0

9400 0 0 1 1 1 1 1 1 1 0

9500 0 0 1 1 1 1 1 0 1 0

9600 0 0 1 1 1 1 1 0 1 1

9700 0 0 1 1 1 1 1 0 0 1

9800 0 0 1 1 1 0 1 0 0 1

9900 0 0 1 1 1 0 1 0 1 1

10000 0 0 1 1 1 0 1 0 1 0

10100 0 0 1 1 1 0 1 1 1 0

10200 0 0 1 1 1 0 1 1 0 0

10300 0 0 1 1 1 0 0 1 0 0

10400 0 0 1 1 1 0 0 1 1 0

10500 0 0 1 1 1 0 0 0 1 0

Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4

Figure 3-9

Gillham Grey Code Chart

18 305186-00

10600 0 0 1 1 1 0 0 0 1 1

10700 0 0 1 1 1 0 0 0 0 1

10800 0 0 1 0 1 0 0 0 0 1

10900 0 0 1 0 1 0 0 0 1 1

11000 0 0 1 0 1 0 0 0 1 0

11100 0 0 1 0 1 0 0 1 1 0

11200 0 0 1 0 1 0 0 1 0 0

11300 0 0 1 0 1 0 1 1 0 0

11400 0 0 1 0 1 0 1 1 1 0

11500 0 0 1 0 1 0 1 0 1 0

11600 0 0 1 0 1 0 1 0 1 1

11700 0 0 1 0 1 0 1 0 0 1

11800 0 0 1 0 1 1 1 0 0 1

11900 0 0 1 0 1 1 1 0 1 1

12000 0 0 1 0 1 1 1 0 1 0

12100 0 0 1 0 1 1 1 1 1 0

12200 0 0 1 0 1 1 1 1 0 0

12300 0 0 1 0 1 1 0 1 0 0

12400 0 0 1 0 1 1 0 1 1 0

12500 0 0 1 0 1 1 0 0 1 0

12600 0 0 1 0 1 1 0 0 1 1

12700 0 0 1 0 1 1 0 0 0 1

12800 0 0 1 0 0 1 0 0 0 1

12900 0 0 1 0 0 1 0 0 1 1

13000 0 0 1 0 0 1 0 0 1 0

13100 0 0 1 0 0 1 0 1 1 0

13200 0 0 1 0 0 1 0 1 0 0

13300 0 0 1 0 0 1 1 1 0 0

13400 0 0 1 0 0 1 1 1 1 0

13500 0 0 1 0 0 1 1 0 1 0

13600 0 0 1 0 0 1 1 0 1 1

13700 0 0 1 0 0 1 1 0 0 1

13800 0 0 1 0 0 0 1 0 0 1

13900 0 0 1 0 0 0 1 0 1 1

14000 0 0 1 0 0 0 1 0 1 0

14100 0 0 1 0 0 0 1 1 1 0

14200 0 0 1 0 0 0 1 1 0 0

14300 0 0 1 0 0 0 0 1 0 0

14400 0 0 1 0 0 0 0 1 1 0

14500 0 0 1 0 0 0 0 0 1 0

14600 0 0 1 0 0 0 0 0 1 1

14700 0 0 1 0 0 0 0 0 0 1

14800 0 1 1 0 0 0 0 0 0 1

14900 0 1 1 0 0 0 0 0 1 1

15000 0 1 1 0 0 0 0 0 1 0

15100 0 1 1 0 0 0 0 1 1 0

15200 0 1 1 0 0 0 0 1 0 0

15300 0 1 1 0 0 0 1 1 0 0

15400 0 1 1 0 0 0 1 1 1 0

15500 0 1 1 0 0 0 1 0 1 0

15600 0 1 1 0 0 0 1 0 1 1

15700 0 1 1 0 0 0 1 0 0 1

15800 0 1 1 0 0 1 1 0 0 1

15900 0 1 1 0 0 1 1 0 1 1

16000 0 1 1 0 0 1 1 0 1 0

16100 0 1 1 0 0 1 1 1 1 0

16200 0 1 1 0 0 1 1 1 0 0

16300 0 1 1 0 0 1 0 1 0 0

16400 0 1 1 0 0 1 0 1 1 0

16500 0 1 1 0 0 1 0 0 1 0

16600 0 1 1 0 0 1 0 0 1 1

16700 0 1 1 0 0 1 0 0 0 1

16800 0 1 1 0 1 1 0 0 0 1

16900 0 1 1 0 1 1 0 0 1 1

17000 0 1 1 0 1 1 0 0 1 0

17100 0 1 1 0 1 1 0 1 1 0

17200 0 1 1 0 1 1 0 1 0 0

17300 0 1 1 0 1 1 1 1 0 0

17400 0 1 1 0 1 1 1 1 1 0

17500 0 1 1 0 1 1 1 0 1 0

17600 0 1 1 0 1 1 1 0 1 1

17700 0 1 1 0 1 1 1 0 0 1

17800 0 1 1 0 1 0 1 0 0 1

17900 0 1 1 0 1 0 1 0 1 1

18000 0 1 1 0 1 0 1 0 1 0

18100 0 1 1 0 1 0 1 1 1 0

18200 0 1 1 0 1 0 1 1 0 0

18300 0 1 1 0 1 0 0 1 0 0

18400 0 1 1 0 1 0 0 1 1 0

18500 0 1 1 0 1 0 0 0 1 0

18600 0 1 1 0 1 0 0 0 1 1

18700 0 1 1 0 1 0 0 0 0 1

18800 0 1 1 1 1 0 0 0 0 1

18900 0 1 1 1 1 0 0 0 1 1

19000 0 1 1 1 1 0 0 0 1 0

19100 0 1 1 1 1 0 0 1 1 0

19200 0 1 1 1 1 0 0 1 0 0

19300 0 1 1 1 1 0 1 1 0 0

19400 0 1 1 1 1 0 1 1 1 0

19500 0 1 1 1 1 0 1 0 1 0

19600 0 1 1 1 1 0 1 0 1 1

19700 0 1 1 1 1 0 1 0 0 1

19800 0 1 1 1 1 1 1 0 0 1

19900 0 1 1 1 1 1 1 0 1 1

20000 0 1 1 1 1 1 1 0 1 0

20100 0 1 1 1 1 1 1 1 1 0

20200 0 1 1 1 1 1 1 1 0 0

20300 0 1 1 1 1 1 0 1 0 0

20400 0 1 1 1 1 1 0 1 1 0

20500 0 1 1 1 1 1 0 0 1 0

20600 0 1 1 1 1 1 0 0 1 1

20700 0 1 1 1 1 1 0 0 0 1

20800 0 1 1 1 0 1 0 0 0 1

20900 0 1 1 1 0 1 0 0 1 1

21000 0 1 1 1 0 1 0 0 1 0

21100 0 1 1 1 0 1 0 1 1 0

21200 0 1 1 1 0 1 0 1 0 0

21300 0 1 1 1 0 1 1 1 0 0

21400 0 1 1 1 0 1 1 1 1 0

21500 0 1 1 1 0 1 1 0 1 0

21600 0 1 1 1 0 1 1 0 1 1

21700 0 1 1 1 0 1 1 0 0 1

21800 0 1 1 1 0 0 1 0 0 1

21900 0 1 1 1 0 0 1 0 1 1

22000 0 1 1 1 0 0 1 0 1 0

22100 0 1 1 1 0 0 1 1 1 0

22200 0 1 1 1 0 0 1 1 0 0

22300 0 1 1 1 0 0 0 1 0 0

22400 0 1 1 1 0 0 0 1 1 0

22500 0 1 1 1 0 0 0 0 1 0

22600 0 1 1 1 0 0 0 0 1 1

22700 0 1 1 1 0 0 0 0 0 1

Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4 Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4

19

22800 0 1 0 1 0 0 0 0 0 1

22900 0 1 0 1 0 0 0 0 1 1

23000 0 1 0 1 0 0 0 0 1 0

23100 0 1 0 1 0 0 0 1 1 0

23200 0 1 0 1 0 0 0 1 0 0

23300 0 1 0 1 0 0 1 1 0 0

23400 0 1 0 1 0 0 1 1 1 0

23500 0 1 0 1 0 0 1 0 1 0

23600 0 1 0 1 0 0 1 0 1 1

23700 0 1 0 1 0 0 1 0 0 1

23800 0 1 0 1 0 1 1 0 0 1

23900 0 1 0 1 0 1 1 0 1 1

24000 0 1 0 1 0 1 1 0 1 0

24100 0 1 0 1 0 1 1 1 1 0

24200 0 1 0 1 0 1 1 1 0 0

24300 0 1 0 1 0 1 0 1 0 0

24400 0 1 0 1 0 1 0 1 1 0

24500 0 1 0 1 0 1 0 0 1 0

24600 0 1 0 1 0 1 0 0 1 1

24700 0 1 0 1 0 1 0 0 0 1

24800 0 1 0 1 1 1 0 0 0 1

24900 0 1 0 1 1 1 0 0 1 1

25000 0 1 0 1 1 1 0 0 1 0

25100 0 1 0 1 1 1 0 1 1 0

25200 0 1 0 1 1 1 0 1 0 0

25300 0 1 0 1 1 1 1 1 0 0

25400 0 1 0 1 1 1 1 1 1 0

25500 0 1 0 1 1 1 1 0 1 0

25600 0 1 0 1 1 1 1 0 1 1

25700 0 1 0 1 1 1 1 0 0 1

25800 0 1 0 1 1 0 1 0 0 1

25900 0 1 0 1 1 0 1 0 1 1

26000 0 1 0 1 1 0 1 0 1 0

26100 0 1 0 1 1 0 1 1 1 0

26200 0 1 0 1 1 0 1 1 0 0

26300 0 1 0 1 1 0 0 1 0 0

26400 0 1 0 1 1 0 0 1 1 0

26500 0 1 0 1 1 0 0 0 1 0

26600 0 1 0 1 1 0 0 0 1 1

26700 0 1 0 1 1 0 0 0 0 1

26800 0 1 0 0 1 0 0 0 0 1

26900 0 1 0 0 1 0 0 0 1 1

27000 0 1 0 0 1 0 0 0 1 0

27100 0 1 0 0 1 0 0 1 1 0

27200 0 1 0 0 1 0 0 1 0 0

27300 0 1 0 0 1 0 1 1 0 0

27400 0 1 0 0 1 0 1 1 1 0

27500 0 1 0 0 1 0 1 0 1 0

27600 0 1 0 0 1 0 1 0 1 1

27700 0 1 0 0 1 0 1 0 0 1

27800 0 1 0 0 1 1 1 0 0 1

27900 0 1 0 0 1 1 1 0 1 1

28000 0 1 0 0 1 1 1 0 1 0

28100 0 1 0 0 1 1 1 1 1 0

28200 0 1 0 0 1 1 1 1 0 0

28300 0 1 0 0 1 1 0 1 0 0

28400 0 1 0 0 1 1 0 1 1 0

28500 0 1 0 0 1 1 0 0 1 0

28600 0 1 0 0 1 1 0 0 1 1

28700 0 1 0 0 1 1 0 0 0 1

28800 0 1 0 0 0 1 0 0 0 1

Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4 Altitude D4 A1 A2 A4 B1 B2 B4 C1 C2 C4

28900 0 1 0 0 0 1 0 0 1 1

29000 0 1 0 0 0 1 0 0 1 0

29100 0 1 0 0 0 1 0 1 1 0

29200 0 1 0 0 0 1 0 1 0 0

29300 0 1 0 0 0 1 1 1 0 0

29400 0 1 0 0 0 1 1 1 1 0

29500 0 1 0 0 0 1 1 0 1 0

29600 0 1 0 0 0 1 1 0 1 1

29700 0 1 0 0 0 1 1 0 0 1

29800 0 1 0 0 0 0 1 0 0 1

29900 0 1 0 0 0 0 1 0 1 1

30000 0 1 0 0 0 0 1 0 1 0

30100 0 1 0 0 0 0 1 1 1 0

30200 0 1 0 0 0 0 1 1 0 0

30300 0 1 0 0 0 0 0 1 0 0

30400 0 1 0 0 0 0 0 1 1 0

30500 0 1 0 0 0 0 0 0 1 0

30600 0 1 0 0 0 0 0 0 1 1

30700 0 1 0 0 0 0 0 0 0 1

30800 1 1 0 0 0 0 0 0 0 1

30900 1 1 0 0 0 0 0 0 1 1

31000 1 1 0 0 0 0 0 0 1 0

31100 1 1 0 0 0 0 0 1 1 0

31200 1 1 0 0 0 0 0 1 0 0

31300 1 1 0 0 0 0 1 1 0 0

31400 1 1 0 0 0 0 1 1 1 0

31500 1 1 0 0 0 0 1 0 1 0

31600 1 1 0 0 0 0 1 0 1 1

31700 1 1 0 0 0 0 1 0 0 1

31800 1 1 0 0 0 1 1 0 0 1

31900 1 1 0 0 0 1 1 0 1 1

32000 1 1 0 0 0 1 1 0 1 0

32100 1 1 0 0 0 1 1 1 1 0

32200 1 1 0 0 0 1 1 1 0 0

32300 1 1 0 0 0 1 0 1 0 0

32400 1 1 0 0 0 1 0 1 1 0

32500 1 1 0 0 0 1 0 0 1 0

32600 1 1 0 0 0 1 0 0 1 1

32700 1 1 0 0 0 1 0 0 0 1

32800 1 1 0 0 1 1 0 0 0 1

32900 1 1 0 0 1 1 0 0 1 1

33000 1 1 0 0 1 1 0 0 1 0

33100 1 1 0 0 1 1 0 1 1 0

33200 1 1 0 0 1 1 0 1 0 0

33300 1 1 0 0 1 1 1 1 0 0

33400 1 1 0 0 1 1 1 1 1 0

33500 1 1 0 0 1 1 1 0 1 0

33600 1 1 0 0 1 1 1 0 1 1

33700 1 1 0 0 1 1 1 0 0 1

33800 1 1 0 0 1 0 1 0 0 1

33900 1 1 0 0 1 0 1 0 1 1

34000 1 1 0 0 1 0 1 0 1 0

34100 1 1 0 0 1 0 1 1 1 0

34200 1 1 0 0 1 0 1 1 0 0

34300 1 1 0 0 1 0 0 1 0 0

34400 1 1 0 0 1 0 0 1 1 0

34500 1 1 0 0 1 0 0 0 1 0

34600 1 1 0 0 1 0 0 0 1 1

34700 1 1 0 0 1 0 0 0 0 1

34800 1 1 0 1 1 0 0 0 0 1

34900 1 1 0 1 1 0 0 0 1 1

35000 1 1 0 1 1 0 0 0 1 0

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