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Trans-Cal SSD120-N-RS5 Owners & Installation Manual

All solid-state altitude encoder/digitizer
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Trans-Cal Industries, Inc.
Model SSD120-(XX)N-RS5
&
Model SSD120-(XX)NE-RS5
(Includes Mod. 1 Data)
All Solid-State
Altitude Encoder/Digitizer
Owner/Installation Manual
FAA TSO-C88a Approved
EASA ETSO-C88a Approved
Trans-Cal Industries, Inc.
Van Nuys Airport
16141 Cohasset Street
Van Nuys, CA 91406-2908
(818) 787-1221 (800) 423-2913 fax (818) 787-8916
www.trans-cal.com
22 June 2012
Document Number: 882204
Rev. C

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Summary of Contents for Trans-Cal SSD120-N-RS5

  • Page 1 Trans-Cal Industries, Inc. Model SSD120-(XX)N-RS5 & Model SSD120-(XX)NE-RS5 (Includes Mod. 1 Data) All Solid-State Altitude Encoder/Digitizer Owner/Installation Manual FAA TSO-C88a Approved EASA ETSO-C88a Approved Trans-Cal Industries, Inc. Van Nuys Airport 16141 Cohasset Street Van Nuys, CA 91406-2908 (818) 787-1221 (800) 423-2913 fax (818) 787-8916 www.trans-cal.com...
  • Page 2 This document may not be reproduced, transmitted, or copied in any form without the prior written consent of Trans-Cal Industries, Inc. The data contained herein is subject to change without notice. Trans-Cal Industries hereby grants permission to download one copy of this manual and any subsequent revision, provided that electronic or printed copy contains this complete copyright notice.

  • Page 3: Table Of Contents

    Table of Contents   Abbreviations, Acronyms and Symbols ......................5   Section 1.0 Introduction ..........................6   1.1 Scope ..................................6   1.2 Equipment Description ............................6   1.3 General Specifications ............................6   1.3.1 Operating Altitude ............................6   1.3.2 Accuracy ...............................
  • Page 4   10.4 King KT-75 ................................48   10.5 S-Tec (Collins) TDR950 ............................48   10.6 Trans-Cal SSD120-(XX)N Backwards Compatibility ..................48   10.7 SSD120-(XX)N-RS5 Compatibility to Competitor’s Products ................49   Wiring Harness Diagram Part Number 881404 ..................50  ...

  • Page 5: Abbreviations, Acronyms And Symbols

    Recommended Standard RTCA Inc. (Radio Technical Commission for Aeronautics) RTCA Society of Automotive Engineers Time in seconds. sec. Secondary Surveillance Radar Trans-Cal Industries, Inc. Telecommunication Industries Association Technical Standard Order Volts Direct Current Vertical Speed Indicator Watt Ω Electrical resistance measured in Ohms.

  • Page 6: Section 1.0 Introduction

    Section 1.0 Introduction 1.1 Scope This manual provides detailed installation, calibration and operating instructions for Trans- Cal Industries’ Model SSD120-(XX)N-RS5 and SSD120-(XX)NE-RS5 series of altitude encoder/digitizer. 1.2 Equipment Description Approved under FAA TSO-C88a and EASA ETSO-C88a the Model SSD120-(XX)N-RS5 and SSD120-(XX)NE-RS5 is an all solid-state electronic device which, when connected to an aircraft’s static and electrical system, converts pressure altitude information into parallel and serial digital data.

  • Page 7: Accuracy

    1.3.2 Accuracy Digitizer accuracy is ±50 feet from -1000 to +30,000 feet, and ±75 feet from 30,100 to +42,000 feet, when measured from the altitude transition points of the ICAO code and referenced to 29.92 In. Hg. (1013 MB.) See Figure 1 and §4.0. 1.3.3 Mechanical Characteristics Model Number Dimensions...

  • Page 8: Serial Port Altitude Data Resolution

    1.6 Serial Port Altitude Data Resolution The default resolution of the altitude digitizer serial data is 100 feet. To enable 10-foot resolution, connect pin 2 of the DA-15S D-Subminiature connector to ground (see Table VIII.) The serial port resolution may also be configured via software, see §4.6. See §4.7 for one-foot resolution.

  • Page 9: Northstar Navigation Devices Protocol

    1.8.3 Northstar Navigation Devices Protocol Grounding pin 9 of the DA-15S serial data receptacle results in a protocol compatible with some navigation devices manufactured by Northstar and Garmin. The Digitizer will send a 10-byte message. The message begins with ALT followed by a space and five altitude bytes;...

  • Page 10: One-Foot Resolution Protocol

    1.8.7 One-Foot Resolution Protocol Leaving pins 9 and 10 of the DA-15S serial data receptacle open, the one-foot resolution protocol MUST be software selected see §4.8 for protocol selection details. Once selected, the Digitizer will send a seventeen byte message beginning with RMS, then a space followed by a sign, five altitude bytes;...

  • Page 11: Section 2.0 Operation

    Section 2.0 Operation 2.1 General The SSD-120(XX)N( )-RS5 series of altitude digitizers are designed to be mounted within a pressurized or non-pressurized, but temperature controlled area within aircraft operating up to 42,000 feet MSL. Usually remotely located, the digitizer is fully automatic in operation. The parallel data output is controlled by the transponder while the serial altitude data is transmitted asynchronously.

  • Page 12: Section 3.0 Installation

    #4-40 screws provided. Refer to the outline drawing for mechanical dimensions. Adapter plates are available to convert older Trans-Cal and competing digitizer installations for use with the SSD120-(XX)N(X)-(X) series of altitude digitizers. See ordering information in §8.0.

  • Page 13: Serial Altitude Data Port Test Equipment

    ICAO altitude digitizer/encoder code. The IFR Model ATC-600A Portable Transponder Test Set is one example. Alternatively, the Trans-Cal Industries’ ATS-400 or EET-200 may be used to display the parallel data. SERI AL DATA...

  • Page 14: Section 4.0 Calibration And Configuration

    ±125 feet as required by TSO-C88a and ETSO-C88a. All Trans-Cal digitizers are calibrated to within ±50 feet of a NIST traceable pressure standard; however, the error allowed on altimeters at higher altitudes could lead to a combined error in excess of ±125 feet.

  • Page 15: Required Equipment Span Adjust

    1. Primary flight altimeter or NIST traceable pressure standard. 2. +12 to 28VDC power supply. 3. IBM compatible computer with an available serial port, OR Trans-Cal Industries ECP-100 Calibration/Programmer. 4. Software requirement: Windows 98®, Windows 2000® or Windows XP® using Hyper Terminal Ver.
  • Page 16 within ±30 feet of the nominal transition point. (i.e. while ascending, the digitizer should transition from 29,900 feet to 30,000 feet at 29,950 feet nominally.) 5. Increase pressure until the digitizer’s output just makes the transition from 100 feet to 0 feet. Verify that the altitude digitizer reports within ±125 feet of the primary flight altimeter.
  • Page 17 Figure 1 Altitude Digitizer Correspondence Page 17 of 57...

  • Page 18: Dynamic Calibration Adjustment Procedure Using The Ecp-100

    The first possible correction for Trans-Cal digitizers is at 0 feet. All adjustments to the digitizer calibration curve occur at 1000-foot intervals. Use the ALTITUDE UP and ALTITUDE DOWN buttons to adjust the ECP-100 to the current pressure altitude prior to pushing the INITIATE PROGRAM pushbutton.
  • Page 19 Figure 2 Dynamic Calibration Set-Up Using the ECP-100 Page 19 of 57...

  • Page 20: Hyper Terminal Set-Up On The Ibm Compatible Pc

    4.6 Hyper Terminal Set-Up on the IBM Compatible PC Boot up the computer and start the serial data capture software such as the Hyper Terminal program. Hyper Terminal may be located in the Programs section or in the Accessories section under Communications, and Hyper Terminal will be used for the balance of the examples used in this manual.

  • Page 21: Serial Port Software Configuration

    4.7 Serial Port Software Configuration The SSD120-(XX)N-RS5 incorporates five RS232 compatible outputs, which are configured into two groups. The two serial data groups may be configured via software to transmit two (2) different altitude data protocols simultaneously. Connect the digitizer to an IBM compatible computer running HyperTerminal as described in §4.5 and as shown in the Dynamic Calibration Block Diagram.

  • Page 22: Serial Port One-Foot Resolution Configuration

    4.8 Serial Port One-Foot Resolution Configuration The SSD120-(XX)N( )-RS232 incorporates five RS232 compatible outputs, TxD4 & TxD5 may be software configured to transmit one-foot resolution data via the following procedure. Connect the digitizer to an IBM compatible computer running HyperTerminal as described in §4.5 and as shown in the Dynamic Calibration Block Diagram.

  • Page 23: Dynamic Calibration Adjustment Procedure

    4.9 Dynamic Calibration Adjustment Procedure Reference: FAR 91.217; FAA Advisory Circular 43-6B FAR 91.423; FAR 43-Appendix E and F FAA TSO-C88a, EASA ETSO-C88a, SAE AS8003 This procedure will allow adjustment to the calibration curve of the SSD120-(XX)N-RS5 or SSD120-(XX)NE-RS5 as an aide in matching the digitizer output to a primary flight altimeter or NIST traceable pressure standard.
  • Page 24 (S10 represents Set 10,000 feet) The digitizer will now output 10,000 feet based on the current input pressure. The PC will display the altitude at which the digitizer will make this change. In the example referenced above, the PC would display >10000. 18.

  • Page 25: Serial Port Software Configuration Using The Ecp-100

    4.10 Serial Port Software Configuration Using the ECP-100 This procedure will allow the technician to assign separate serial data output protocols to the altitude digitizer output port groups. Connect the ECP-100 to the altitude digitizer as shown in Figure 3. Step 1: With the ECP-100 and altitude encoder power off, Slide the CAL.
  • Page 26 Step 8: Slide the ECP-100 power switch to the off position and remove power from the altitude encoder. The encoder is now programmed and ready to operate. Figure 3 Serial Port Configuration Using the ECP-100 Page 26 of 57...

  • Page 27: Configuration And Calibration Command List

    4.11 Configuration and Calibration Command List Following is a list of commands, which will operate in the ADJ and TCICAL mode. Top-Level Menu Commands Action Enter Adjustment mode. ADJ <enter> Enter TCICAL mode. TCICAL<enter> Quit and resume normal operation. Sub-Menu (ADJ) Commands Action Clear all EEPROM data.

  • Page 28: Error Correction Table

    4.12 Error Correction Table Altitude Correction Altitude Correction -1000 21000 22000 1000 23000 2000 24000 3000 25000 4000 26000 5000 27000 6000 28000 7000 29000 8000 30000 9000 31000 10000 32000 11000 33000 12000 34000 13000 35000 14000 36000 15000 37000 16000 38000...

  • Page 29: Section 5.0 Tables I Through X Digitizer Interconnection

    Section 5.0 Tables I through X Digitizer Interconnection The following digitizer interconnections are provided as a quick reference only, and though they are correct to the best of our knowledge, always consult the latest installation, operation, and service bulletins from the equipment manufacturer.

  • Page 30: Bendix/King (Honeywell) Kt 73 Transponder With Serial Altitude Data Input

    The KT 73 must be configured to accept serial altitude data on pin 7 of the main connector, and software configured for High Resolution M (IIMorrow). 1200bps, 7 data bits, 1 stop bit and odd parity. The Trans-Cal SSD120-(XX)N-RS5 must be software configured to transmit the correct serial data protocol to the Bendix/King KT 73 transponder as described below.
  • Page 31 Table II Cessna, Narco, Microair Cessna RT359A, SSD120 RT459A, Narco AT-150 Narco AT-6A Microair DA-15P RT859A AT-50, AT-50A AT-5, AT-6 Conn. Function Pin Number Pin Number Pin Number T2000 Output Connect to aircraft Enable ground. 14 to 8 or 28Vdc Input Connect to aircraft...
  • Page 32 Table III Garmin Garmin SSD120 Garmin Garmin GNC 300 DA-15P This column left GTX 327 GTX 330 & 330D blank intentionally. Conn. Function Pin Number Pin Number Pin Number Output 13 or 25 or Connect to aircraft Enable aircraft ground ground Pin 62 through a Connect to aircraft’s...
  • Page 33 Table IV Garmin Serial Data Connection for the Garmin GTX327 Transponder SSD120-(XX)N-RS5 Function GTX327 Serial Data Receptacle 25 Pin Connector 6, 8, 12, 14, 15 (choose one) TxD to RxD 1,4,5,7,11,13 (choose one) Data Ground 13 or 25 Protocol: connect pin 10 to ground.
  • Page 34 Table V Edo-Air, Genave, Collins, Radair SSD120 Edo-Air Genave Collins Radair DA-15P RT-777 Beta 5000 TDR 950 Conn. Pin Number Pin Number Pin Number Pin Number Output Connect to aircraft Enable ground. Connect to aircraft’s Connect to aircraft’s 8 or 14 to avionics buss protected avionics buss protected...
  • Page 35 Table VI Bendix, Wicox, UPS AT Bendix Bendix Wilcox UPS AT SSD120 TPR-2060 TR641A/B 1014A Apollo SL70 DA-15P Pin Number Pin Number Pin Number Pin Number Conn. Output Connect to aircraft Connect to aircraft Connect to aircraft Connect to aircraft Enable ground.
  • Page 36 Table VII Becker, Terra, Trig Becker Terra Trig SSD120 Avionic Systems Becker TRT-250 TT31 DA-15P ATC3401 Avionic Systems Conn. ATC2000 TRT-250D Mode S ATC4401 Output Connect to aircraft Enable ground. Connect to aircraft’s avionics buss protected 8 or +14 to by a fuse or circuit 28Vdc breaker.
  • Page 37 The Honeywell Bendix/King 860 EGPWS manual lists an RS232 serial altitude data input on pin J1-45 with a data common on pin J1-46. Several TCI compatible serial data protocols are listed, but at the time of this printing, Trans-Cal has not tested the 860 EGPWS data input for compatibility.

  • Page 38: Tables Ix And X Serial Data Connector And Protocol Selection

    Tables IX and X Serial Data Connector and Protocol Selection Table IX SSD120-(XX)N-RS5 Serial Data Port Receptacle, DA-15S Function Ground Ground for 10' resolution. RxD (Calibration Only) Ground Ground TxD1 (Group A) Ground TxD2 (Group A) Protocol Protocol Ground TxD3 (Group A) Ground TxD4 (Group B) TxD5 (Group B)

  • Page 39: Section 6.0 Gps/Mfd & Miscellaneous Connection Data

    Section 6.0 GPS/MFD & Miscellaneous Connection Data Given the speed with which new GPS and MFD units are entering the market, it is impossible to provide data on every device. The following digitizer/GPS interconnections are provided as a quick reference only, and though they are correct to the best of our knowledge, always consult the latest installation, operation, and service bulletins from the GPS or MFD manufacturer.

  • Page 40: Trimble

    6.2 Trimble Trimble 2101 Approach Plus GPS Receiver Trimble 2101 Trimble 2101 SSD120-(XX)N-RS5 Trimble Signal Port 1 Port 2 Serial Data D-Sub Receptacle 1, 4, 5, 7, 11, 13 (choose one) RxD+ 6, 8, 12, 14, 15 (choose one) RxD- 3 or 20 3 or 20 1, 4, 5, 7, 11, 13 (choose one)

  • Page 41: Garmin International

    6.3 Garmin International Garmin 400 and 500 Series GPS Devices (Includes 430W and 530W) Garmin 78 Pin Conn. SSD120-(XX)N-RS5 (P4001) Serial Data Receptacle 6, 8, 12, 14, 15 (choose one) 1, 4, 5, 7, 11, 13 (choose one) 77 or 78 Protocol, jumper pin 7 to ground.

  • Page 42: Arnav Systems, Inc

    6.4 ARNAV Systems, Inc. ARNAV Systems 5000 Series Multi-Function Display ARNAV 5000 SSD120-(XX)N-RS5 25 Pin Connector Serial Data Receptacle 6, 8, 12, 14, 15 (choose one) 1, 4, 5, 7, 11, 13 (choose one) 13 or 25 Protocol, Software select ARNAV protocol see §4.6.

  • Page 43: Century Flight Systems

    6.5 Century Flight Systems Digital Altitude Preselect/Alerter 1D960 Digital Altitude Preselect/Alerter ICAO Serial Altitude Data Input 1D960 ICAO Parallel Input 1D960 Connector SSD120-(XX)N-RS5 SSD120 Function 1D960 Pin CD-245 1 or 5 or 8 TxD2 must be programmed for 1’ resolution. STROBE Connect to Ground...

  • Page 44: Section 7.0 Instructions For Continued Airworthiness

    ±125 feet when compared to the primary flight altimeter, then recalibration as per §4.0 of this manual is required. If the error cannot be corrected through this procedure, then the unit is to be repaired or replaced. Contact Trans-Cal Industries for further information.

  • Page 45: Section 9.0 Frequently Asked Questions

    Section 9.0 Frequently Asked Questions 1. How often must the Altitude Digitizer be calibrated; is there periodic maintenance required? There is no periodic maintenance required. The Digitizer is tested and calibrated, if required, during the aircraft’s biennial certification of the transponder and static system. 2.
  • Page 46 5. What is the Strobe or Signal Common or Output Enable function on the ICAO altitude data port? This is a control signal for the ICAO parallel altitude data. On devices manufactured by Trans-Cal this function is always on pin 6 of the ICAO altitude port. A “high” or “open” on this pin will disable the ICAO altitude data.
  • Page 47 12. How can I verify the RS232 data message, baud rate and parity transmitted from the Digitizer? a. Use the Trans-Cal ATS-400 Test Set to display the RS232 data. b. Substitute the Trans-Cal ADS-100 for the altitude encoder to simulate the serial data transmission.

  • Page 48: Section 10.0 Known Compatibility Issues

    High Resolution M (IIMorrow). 1200bps, 7 data bits, 1 stop bit and odd parity. The Trans-Cal SSD120-(XX)N-RS5 must be software configured to transmit the correct serial data protocol to the Bendix/King KT 73 transponder as described in §5.0 of this manual.

  • Page 49: Ssd120-(Xx)N-Rs5 Compatibility To Competitor's Products

    Model A-30 Pin-for-pin compatible. Ameri-King Corp. Model AK-350 Pin-for-pin compatible. Becker Avionic Systems BE6400-01-(XX) Utilizes an RS422 interface and is not compatible with Trans-Cal encoders. Narco Model AR-850 Pin-for-pin compatible. Narco Model AR-500 Uses a 25 Pin D-Sub connector and must be rewired to use SSD120-(XX)N-RS5.

  • Page 50: Wiring Harness Diagram Part Number 881404

    Wiring Harness Diagram Part Number 881404...

  • Page 51: Span Adjust Block Diagram

    Span Adjust Block Diagram...

  • Page 52: Dynamic Calibration Block Diagram

    Dynamic Calibration Block Diagram...
  • Page 53 Figure 2 Temperature vs. Warm-up Time Seconds (±20%) TIME...

  • Page 54: Outline Drawing

    Outline Drawing...

  • Page 55: Environmental Qualification Form

    Environmental Qualification Form Nomenclature: Altitude Digitizer Model No.: SSD120-42N-RS5 FAA TSO-C88a and EASA ETSO-C88a Manufacturer: Trans-Cal Industries, Inc., 16141 Cohasset St. Van Nuys, CA 91406 DO-160E Tested: October 2007 Conditions Section Description of Tests Conducted Tested to Category D1. Temp. and Altitude §4.0...

  • Page 56: Part Number Builder

    Part Number Builder SSD120-XX X X X-XXXX Max. Operating Altitude (ft.) Dash Number 30,000 35,000 42,000 50,000 62,000 65,000 80,000 85,000 100,000 -100 Model Nomenclature Encoder/Digitizer (Discontinued) 2” Dia. Module Servo Module Nano Encoder Series Operating Environment Standard -20° to +70°C Blank Extended -55°...

  • Page 57: Manufacturer Direct Warranty

    No other obligation or liability is expressed or implied. For the above warranty to become effective, the attached registration card must be completed and returned to Trans-Cal Industries, properly filled out and signed by the dealer selling or installing this equipment.

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