A Go-To Source of High-Precision Altitude Encoding Devices

Model SSD120-(XX) Series

Altitude Digitizers/Encoders

One of The Smallest, Lightest and Lowest Power Consumption Altitude Encoder on the Market!
Available with Serial Data Outputs in RS232 or RS485 Formats! Operating Ranges up to 100,000 ft.!

Economical Altitude Encoders for ADS-B and Mode C Applications!

New Adapter Plates - TSO Approved, Convert to a Nano in Minutes!

SSD120-(XX)NEH-RS Now Certified for Water Spray and Icing!

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Now Available!
SSD120-35C-RS232

SSD120-(XX)N & SSD120-(XX)NE

SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232

SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 High Altitude

SSD120-(XX)N-RS or RS5 & SSD120-(XX)NE-RS or RS1 or RS5

SSD120-(XX)NEH-RS

SSD120-(XX)M

D120-P2-T

Find Adapter Plate Information here.

Find Altitude Encoder Model Comparison Chart here.

Find ADS-B installation requirements information here.

Trans-Cal Altitude Encoders Feature:

  • FAA TSO-C88a and EASA ETSO-C88a Approval

  • Suitable for ADS-B Installations - 10' resolution serial data!

  • Tested and Conforming to MIL-STD-704E and RTCA DO-160E

  • Operating Voltage +10 to +33Vdc

  • Low Power Consumption

  • Standard D-Subminiature Electrical Connectors or MIL Cylindrical Connectors

  • 1/8-27NPT Static Port, Some Models Available with Dual 1/8-27NPT Static Port Inlets or Optional 1/8" Hose Barb with 360° Adjustable Swivel

  • All Aluminum Housings Treated to Resist Corrosion as per MIL-C-5541E or Anodized as per MIL-A-8625 or Black Powder Coat

  • Standard Operating Temperature Range: -20° to +70°C
    (-4° to +158°F)

  • Optionally Some Models Available with Extended Temperature Range: -55° to +70°C (-67° to +158°F)

SSD120C 375

Model SSD120-(XX)C-RS232

Model SSD120-35C-RS232 Now Available!

Model SSD120-35C-RS232 (Altitude Range -1000 to +35,000 feet)

The SSD120-35C-RS232 are all solid-state Altitude Encoders. These devices provide a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data as set forth in the International Standard for Pressure Altitude Transmission. In accordance with U.S. National Standards for Common System Component Characteristics for the I.F.F. Mark X (SIF)/Air Traffic Control Radar Beacon System SIF/ATCRBS.

These units also provide altitude data on two asynchronous RS232 outputs. The serial data protocol is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices. Six (6) serial data protocols are available.The data protocol is selected through internal shunts or via software set-up.

Resolution of the serial altitude data may be set to 100 feet or 10 feet through internal shunts.

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SSD120-35C-RS232 Documentation Links
Owner/Installation Manual - Document Number 881625
SSD120-35C-RS232 Data Sheet

Nano

Model SSD120-(XX)N

Model SSD120-(XX)N & Model SSD120-(XX)NE

An "E" suffix in the part number calls out the extended operating temperature range. -55° to +70°C (-67° to +158°F)

Model SSD120-30N & SSD120-(XX)NE (Altitude Range -1000 to +30,000 feet)

Model SSD120-35N & SSD120-35NE (Altitude Range -1000 to +35,000 feet)

Model SSD120-42N & SSD120-42NE (Altitude Range -1000 to +42,000 feet)

The SSD120-(XX)N and SSD120-(XX)NE are all solid-state Altitude Encoders. These devices provide a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data as set forth in the International Standard for Pressure Altitude Transmission. In accordance with U.S. National Standards for Common System Component Characteristics for the I.F.F. Mark X (SIF)/Air Traffic Control Radar Beacon System SIF/ATCRBS.

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SSD120-(XX)N & SSD120-(XX)NE Documentation Links
Owner/Installation Manual - Document Number 882188
SSD120-(XX)N & SSD120-(XX)NE Data Sheet

nanoRS232

Model SSD120-(XX)N-RS232

Model SSD120-(XX)N-RS232 & Model SSD120-(XX)NE-RS232

An "E" suffix in the part number calls out the extended operating temperature range. -55° to +70°C (-67° to +158°F)

Model SSD120-30N-RS232 & SSD120-30NE-RS232 (Altitude Range -1000 to +30,000 feet)

Model SSD120-35N-RS232 & SSD120-35NE-RS232 (Altitude Range -1000 to +35,000 feet)

Model SSD120-42N-RS232 & SSD120-42NE-RS232 (Altitude Range -1000 to +42,000 feet)

The SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 are all solid-state Altitude Encoders. These devices provide a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

These units also provide altitude data on two asynchronous RS232 outputs. The serial data protocol is individually selectable for each output and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

Resolution of the serial altitude data may be set to 100 feet or 10 feet. A data protocol offering one-foot resolution is available, as well as one protocol offering altitude data in meters.

This device is available in a variety of configurations based upon the operating altitude, temperature range and data formats required.

Calibration video using the ECP-100 is located here.

Configuring the serial ports video using the ECP-100 is located here.

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SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 Documentation Links
Owner/Installation Manual - Document Number 882189
SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 Data Sheet

100N

Model SSD120-(XX)N-RS232 (High Altitude)

NanoSwivel

Model SSD120-(XX)N1-RS232 with 360° Adjustable Swivel Hose Barb Static Port Fitting

Model SSD120-(XX)N-RS232 (High Altitude) & Model SSD120-(XX)NE-RS232 (High Altitude)

An "E" suffix in the part number calls out the extended operating temperature range. -55° to +70°C (-67° to +158°F)

Model SSD120-50N-RS232 & SSD120-50NE-RS232 (Altitude Range -1000 to +50,000 feet)

Model SSD120-62N-RS232 & SSD120-62NE-RS232 (Altitude Range -1000 to +62,000 feet)

Model SSD120-65N-RS232 & SSD120-65NE-RS232 (Altitude Range -1000 to +65,000 feet)

Model SSD120-80N-RS232 & SSD120-65NE-RS232 (Altitude Range -1000 to +80,000 feet)

Model SSD120-85N-RS232 & SSD120-85NE-RS232 (Altitude Range -1000 to +85,000 feet)

Model SSD120-100N-RS232 & SSD120-100NE-RS232 (Altitude Range -1000 to +100,000 feet)

Devices with operating ceilings of 50,000 feet and higher are designed around rugged proprietary solid-state sensor technology and operate with a current consumption of 60mA at +28Vdc!

The SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 are all solid-state Altitude Encoders. These devices provide a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

This unit also provides altitude data on two asynchronous RS232 outputs. The serial data protocol is individually selectable for each output and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

Resolution of the serial altitude data may be set to 100 feet or 10 feet. A data protocol offering one-foot resolution is available, as well as one protocol offering altitude data in meters.

Available with either dual 1/8-27NPT static ports or 360° adjustable swivel hose barb fitting.

This device is available in a variety of configurations based upon the operating altitude, temperature range and data formats required.

Configuring the serial ports video using the ECP-100 is located here.

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SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 Documentation Links
Operating ranges between 50,000 and 85,000 feet, Owner/Installation Manual - Document Number 882197
Operating Range to 100,000 feet Owner/Installation Manual - Document Number 882201
SSD120-(XX)N-RS232 & SSD120-(XX)NE-RS232 Data Sheet

RS5

Model SSD120-(XX)N-RS5

Model SSD120-(XX)N -RS / -RS1 /-RS5 & Model SSD120-(XX)NE -RS / -RS1 / -RS5

An "E" suffix in the part number calls out the extended operating temperature range. -55° to +70°C (-67° to +158°F)

Model SSD120-30N-RS5 & Model SSD120-30NE-RS5 (Altitude Range -1000 to +30,000 feet)

Model SSD120-35N-RS5 & Model SSD120-35NE-RS5 (Altitude Range -1000 to +35,000 feet)

Model SSD120-42N-RS5 & Model SSD120-42NE-RS5 (Altitude Range -1000 to +42,000 feet)

An "E" suffix in the part number calls out the extended operating temperature range. (ie. SSD120-30NE-RS5)

The SSD120-(XX)N-RS5 & SSD120-(XX)NE-RS5 are all solid-state Altitude Encoders. These devices provide a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

The devices also provide altitude data on FIVE asynchronous RS232 outputs. The serial data protocol is selectable and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

The SSD120-(XX)N-RS1 is an all solid-state Altitude Digitizer/Encoder. This device provides a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

The SSD120-(XX)N-RS1 also provides altitude data on Two asynchronous RS232 and One RS485 output. The serial data protocol is selectable and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices. One-Foot Resolution Data is available on the second RS232 output only.

The SSD120-(XX)N-RS is an all solid-state Altitude Digitizer/Encoder. This device provides a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

This unit also provides altitude data on Two asynchronous RS232 and One RS485 output. The serial data protocol is selectable and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

Resolution of the serial altitude data may be set to 100 feet or 10 feet. A data protocol offering altitude in meters is available.

This device is available in a variety of configurations based upon the operating altitude, temperature range and data formats required.

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SSD120-(XX)N-RS -RS1 & RS5 Documentation Links
Owner/Installation Manual - SSD120-(XX)N-RS Document Number 882200
SSD120-(XX)N-RS Data Sheet
Owner/Installation Manual SSD120-(XX)N-RS1 Document
Owner/Installation Manual - SSD120-(XX)N-RS5 Document Number 882204
SSD120-(XX)N-RS5 Data Sheet

SSD120H
SSD120H1

Model SSD120-(XX)NEH-RS

NanoSwivelH

Model SSD120-(XX)NEH1-RS with 360° Adjustable Swivel Hose Barb Static Port

Spray3

RTCA/DO-160E Category R Spray-Proof Testing

SSD NEH Ice 01

RTCA/DO-160E Category C IcingTesting

Model SSD120-(XX)NEH-RS

Model SSD120-30NEH-RS (Altitude Range -1000 to +30,000 feet)

Model SSD120-35NEH-RS (Altitude Range -1000 to +35,000 feet)

Model SSD120-42NEH-RS (Altitude Range -1000 to +42,000 feet)

Model SSD120-50NEH-RS (Altitude Range -1000 to +50,000 feet)

Model SSD120-62NEH-RS (Altitude Range -1000 to +62,000 feet)

Model SSD120-65NEH-RS (Altitude Range -1000 to +65,000 feet)

Model SSD120-80NEH-RS (Altitude Range -1000 to +80,000 feet)

The SSD120-(XX)NEH-RS is an all solid-state Altitude Digitizer/Encoder. This device provides a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

The SSD120-(XX)NEH-RS also provides altitude data on Two asynchronous RS232 and one RS485 output. The serial data protocol is selectable and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

Resolution of the serial altitude data may be set to 100 feet or 10 feet. A data protocol offering one-foot resolution is available, as well as one protocol offering altitude data in meters.

This device is designed for exposure to an environment where it may be subjected to water, and icing build-up (generally the result of condensation, driving rain and/or water spray.) The instrument case is constructed of anodized aluminum and incorporates a hermetically sealed MIL-DTL-38999 Series III connector.

Available with either dual 1/8-27NPT static ports or 360° adjustable swivel hose barb fitting.

This device is available in a variety of configurations based upon the operating altitude, temperature range and data formats required.

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SSD120-(XX)NEH-RS Documentation Links
Owner/Installation Manual - SSD120-(XX)NEH-RS Document Number 882199
SSD120-(XX)NEH-RS Data Sheet

SSD-M1
SSD-M

Model SSD120-(XX)M

Model SSD120-(XX)M

Model SSD120-35M (Altitude Range -1000 to +35,000 feet)

Model SSD120-50M (Altitude Range -1000 to +50,000 feet)

The SSD120-(XX)M is an all solid-state Altitude Digitizer/Encoder Module. This device is designed to be mounted within a flight altimeter or other protective enclosure and provides a rugged and reliable means of measuring air pressure and converting this measurement into the ICAO parallel data for Pressure Altitude Transmission.

The SSD120-(XX)M also provides altitude data on Two asynchronous RS232 outputs. The serial data protocol is selectable and is commonly used to provide pressure altitude data to ADS-B, GPS, Auto-Pilots, Transponders and other navigation devices.

Resolution of the serial altitude data may be set to 100 feet or 10 feet. A data protocol offering one-foot resolution is available, as well as one protocol offering altitude data in meters.

The module is mounted via a hermetically sealed jam nut connector MS3114-H16C-26PN type.

This device is available in a variety of configurations based upon the operating altitude, temperature range and data formats required.

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SSD120-(XX)M Documentation Links
Owner/Installation Manual - SSD120-(XX)M Document Number 881600
SSD120-(XX)M Data Sheet

D120-P2-T

Model D120-P2-T

Model D120-P2-T

Model D120-P2-T 20K (Altitude Range -1000 to +20,000 feet)

Model D120-P2-T 30K (Altitude Range -1000 to +30,000 feet)

Model D120-P2-T 35K (Altitude Range -1000 to +35,000 feet)

This is the unit that earned Trans-Cal its reputation for reliability. TCI still receives units for initial repair that have been in service since that original production run in 1971. Like all TCI designs, this unit offers unprecedented reliability and a rock-solid design. This is an electro-mechanical instrument. An optical shaft angle encoder linked to a mechanical aneroid. Offering low current consumption and a high MTBF the D120 is still in production 38 years later. Offered in 20,000 ft. 30,000 ft., and 35,000 feet operating ranges, the D120-P2-T is a tried and true instrument.

Link to the D120 Installation Manual here.

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