The SSD120-(XX)-N Series Nano Altitude Encoders are solid-state devices designed to measure air pressure and convert the measurements into ICAO parallel data for pressure altitude transmission. The SSD120-30N provides an ICAO pressure altitude Gray Code output for reliable altitude reporting. Features Altitude range: -1,000 ft to 30,000 ft Includes mounting bracket, mating connectors with cable clamps, and installation kit Dual 1/8-27 NPT static port inlets ICAO pressure altitude Gray Code output Optional two or five RS-232 compliant data outputs Installer-configurable serial ports for separate data protocols, message formats, and baud rates Power, ground, and data I/O lines provided through industry-standard D-subminiature connectors Corrosion-resistant aluminum housing Specifications Weight: 5.9 oz (low altitude) / 6.3 oz (high altitude) Altitude Ceiling: 30,000–42,000 ft (low altitude) / 50,000–100,000 ft (high altitude) ICAO Gray Code Output: Yes RS-485 Output: No (except SSD120(XX)N-RS model) Operating Voltage: 12 VDC @ 220 mA / 28 VDC @ 270 mA (low altitude); 12 VDC @ 55 mA / 28 VDC @ 60 mA (high altitude) Low Operating Temperature: -20°C / -55°C (E models) High Operating Temperature: 70°C Wet Environment: No Electrical Connector: D-subminiature 15-pin, SSD120-(XX)N; D-subminiature 15-pin & 9-pin, -RS232 models; D-subminiature 15-pin plug & 15-pin receptacle, -RS models Static Line Connection: Dual 1/8-27 NPT (low altitude); dual 1/8-27 NPT or 1/8 tube swivel fitting (high altitude) Approvals: TSO-C88a, ETSO-C88a, MIL-STD-704E, RTCA DO-160E
