Park Rapids Avionics Products
Trans-Cal Solid State Altitude Encoder/Digitizer
This part number designates a blind-mounted, solid-state altitude digitizer manufactured by Trans-Cal Industries. It is widely recognized in the aviation industry as one of the smallest and lightest altitude encoders available. It functions as a baseline subsystem component designed to convert physical aircraft static pressure parameters into standardized digital data feeds required by Mode C or Mode S transponders, ADS-B Out systems, and GPS navigators.
Description
This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 06/03/2026.
Key Technical Capabilities
- Solid-State Barometric Digitizing: Utilizes an integrated pressure-sensing element to measure ambient air pressure through the pitot-static system and translate those measurements into ICAO parallel Gray Code data output.
- Instantaneous Cold-Start Initialization: Engineered with modern solid-state circuitry that completely eliminates required warm-up times at room temperatures (+20°C to +70°C), requiring a maximum of 30 seconds to reach full operating accuracy in extreme cold environments (-20°C).
- Universal Transponder Compatibility: Designed as a drop-in, pin-for-pin electronics replacement layout for older, legacy optical or mechanical blind encoders from alternate manufacturers.
- Compact Structural Footprint: The ultra-lightweight “Nano” aluminum housing is engineered to mount behind the instrument panel or avionics stack using standard mounting bracket configurations, minimizing airframe real estate consumption.
Additional information
| Part Number | SSD120-30N |
|---|---|
| Serial Number | 21074 |
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