Product Sheet TTC OVH-380-1 High-Speed Airborne Instrumentation Multiplexer Overhead Card Product Sheet Download the Product Sheet share The OVH-380 is the processor-based controller (overhead) board for the AIM/HS-AVDAU-200XE. Download Resource Login to download this resource Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Don’t have an account?Register here.