* Size: 3.26"W x 3.26"H x 2.73"L
    * TSO Compliance: TSO C41c Class A, DO-160 Env. Cat A1D1/A/SKP/XXXXXX/ZBABA
    * ADF Bearing Input: DC sine and cosine voltages, +-3.0VDC max across each winding
    * Power Requirements: Compass Card Drive 12VDC at 0.12A
    * Weight: 0.7 lbs.
    * Humidity: 95% + RH at 50C for 48 hours
    * Power Requirements: Lighting 14VDC at 0.16A or 28VDC at 0.08A
    * Compass Card Input: (-01) only) 2 phase digital stepper motor signals from KCS-55/55A Compass System