AHR75
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Attitude Heading Reference System The AHR75 AHRS (Attitude Heading Reference System) is designed for cost-constrained installations requiring the highest levels of safety and performance. Archangel Systems uses a three-part design philosophy to meet these goals: technology, pedigree, and ease of use. First, the AHR75 uses technology such as MEMS sensors, Archangel’s AHR150A-2-A magnetic sensing unit, and sophisticated blending algorithms to deliver “FOG-grade” performance at greatly reduced size, weight, and power. Second, the unit has a comprehensive list of certifications including FAA approval for Part 23, 25, 27, and 29 installations, DO-178C Level A (Mission Critical) software, and complete DO160E protections. And third, the AHR75 is easy to use. With multiple high- and low-speed ARINC 429 ports, the AHR75 directly integrates into modern architectures. Ideally suited for forward and retrofit programs, the AHR75 has multiple wins with aircraft OEMs and upgraders. FEATURES Qualified for Mission Critical applications including IFR, SAR, and primary flight systems Certified for Part 23, 25, 27, and 29 aircraft Designed with low data latency for fly-by-wire aircraft Directional Gyro mode meets TSO C201 H2H9 requirements Angle rate limit options: ±128°/second ±240°/second ±440°/second User-programmable lever arms and orientation Mil Spec 38999 filtered connectors CERTIFICATIONS DO-178C Level A software (all functions) FAA TSO C201 DO-160E Environmental certifications including EMI, EMC, and HIRF EXPORTING Exportable worldwide No end-user statement required www.archangel.com 334.826.8008 x22 Dan Reida – Director of Sales 417.896.4407 lets.talk@ar

Attitude Heading Reference System The AHR75 leverages the performance and certification heritage of Archangel’s flagship AHR150A ADAHRS. For example, the AHR150A-2-A MSU, also certified to DO178C Level A, serves as the AHR75 heading sensor. TSO Altitude Power -40°C to +70°C operating -55°C to +125°C non-operating -1,000 to 52,000 ft pressure 16–36 VDC, 0.5 A @ 28 V nominal approval for the AHR75 is per the FAA’s new C201 requirement for AHRS. To increase flexibility in the architecture and cable routing, air data can be received by the AHR75 on its low-speed ARINC 429 port and echoed on the...