The SSD120-35C-RS232 (SSD120-35C) is a rugged and reliable altitude digitizer for applications where size, weight, and economy are critical. This encoder accurately measures air pressure and converts this measurement into the ICAO parallel data as set forth in the International Standard for Pressure Altitude Transmission.
Incorporating one ICAO gray code port and two RS232 serial altitude data outputs, this encoder is a simple and robust addition to any avionics installation requiring pressure altitude information for multiple aircraft systems. The serial data protocol is commonly used to provide pressure altitude data to ADS-B, GPS, auto-pilots, transponders and other navigation devices. Six serial data protocols are available. Data protocol is selected through internal shunts or via software set-up. Installation hardware includes: quick release mounting tray, mating electrical connector and backshell, 1/8-27NPT to tube and plug, and installation manual.
- Small, light, and low power consumption
- 1/8-27NPT static port inlet
- ADS-B Compliant
- One ICAO pressure altitude gray code output
- Two RS232 serial altitude data outputs
- Resolution of the serial altitude data may be set to 100 feet or 10 feet through internal shunts
- Altitude range from -1,000 to 35,000 feet
- FAA TSO-C88a and ETSO-C88a approved
- Tested and conforms to MIL-STD-704E and RTCA DO-160E
Product Codes | |
|---|---|
| Mfr Part No: | SSD120-35C-RS232 |
| ECCN: | 7A994 |
| PROAPP: | PT0758NM |
| SCHEDULE B CODE: | 9014.20.6000 |
| TSO: | C88a |
Weight: 4.3 oz (5.3 oz with tray and knob)Operating Voltage: 12 - 30 VDCOperating Current: 0.25 amps @14 VDC, 0.27 amps @28 VDCOperating Temperature: -20°C to 55°C (-4°F to 158°F)Storage Temperature: -65°C to 85°C (-85°F to 185°F)Warm-up Time: 0 sec @20°C (68°F)Operating Altitude: 1,000 to 35,000 ftCertifications: FAA TSO C88a, EASA TSO C88a, RTCA DO-178 software, RTCA-DO-160E D1BAB[(SM (UF)]XXXXXXZBBB(BC)TTBXXXAX
- Stock: Warehouse
- Manufacturer Part #: SSD120-35C-RS232
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Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
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