CRW–13 digital radio altimeter

Electronic block (2500 ft)

Digital radio altimeter – features.

• Digital altitude signal processing based on the FFT algorithm.
• Transmitter-receiver device built together with antennas.
• Installation without antenna cables and shock absorbing frame.
• Low height allows installation in a low hull profile.

CRW–13 has analog output and ARINC 429 for cooperation with GPWS, TCAS, Autopilot systems.

CRW–13 – specification

• dimensions without flange: 3,15”W x 1,77”H x 7,09”L (80 x 45 x 180 mm);
• weight: 1.05 kg,
• power supply: 14 V DC / 0.5 A nominal to 28 V DC / 0.3 A;
• altitude: 55,000 ft;
• operating temperature range: -45⁰C to +60⁰C;
• transmitter output: 150 mW FMCW, 100 Hz modulation;
• operating frequency: 4300 ±20 MHz;
• AID height: 2 ft to 20 ft (0,6 m to 6 m);
• accuracy: ±2 ft or ±2% from to 500 ft, ±3% from 500 to 2500 ft.

• Rwl–750m AA–E7 radio altimeter
• Electronic block (750 m)
• AA–E4 electronic block (2500 ft)

Electronic block – features

• The AA–E4 can work with the AA–W4 indicator in the range up to 2500 ft;
• The AA–E7 can work with the AA–W7 indicator in the range up to 750 m;
• cooperation with two S67–2002 antennas (Sensor Systems);
• requires AA–R4 shock absorbing frame;
• has an analog output and ARINC 429 for cooperation with GPWS, TCAS, Autopilot systems.

Electronic block – specification

• dimensions: 3,58”W x 3,46”H x 10,04”L (91 x 88 x 255 mm);
• weight: 1.9 kg,
• power supply: 27,5 V DC ±20% 0,7A nominal;
• altitude: 55,000 ft;
• temperature: -45⁰C to +60⁰C;
• transmitter output: 250 mW FMCW, 100 Hz modulation;
• frequency: 4300 ±20 MHz;
• AID height: 20 ft to 60 ft (6 m to 19 m);
• accuracy AA–E4: ±2 ft 3% from to 500 ft, ±3% from 500 to 2500 ft;
• accuracy AA–E7: ±0.6 m or ±3% from to 100 m, ±3% from 100 to 750 m.