Product Description

The DS200AAHAH1ADC is an ARCNET Connection PCB. It was originally produced and sold by GE as a part of their Mark V LM series of components for the Speedtronic line.  

The DS200AAHAH1ADC is often referred to as an AAHA board. It typically acts as an interfacing unit between different I/O cores or external modules to the <R> Control Engine. It gives these interfacing units access to the ARCNET. There are normally two AAHA boards that are used with the <R> core. The first AAHA board acts as a connection between user interfaces and the <R> core. There is an APL connector on the AAHA that links it to the UCPB daughterboard that is in the <R> core on the UCIA board. The second AAHA board acts as a way to connect the <R> core to the COREBUS. It facilities active communication between the I/O cores and the <R> Control Engine which is in the <R> core. The APL connection on this AAHA connects to a PANA daughterboard.

The DS200AAHAH1ADC is a very small daughterboard that has a total of three communication ports on the top side. The far-left port is an EBNC port that isn’t often used. Next to the EBNC are the ARCBNC-B and ARCBNC-A ports. These two ports are connections to the ARCNET. On the bottom of the board are three pin connectors. The first pin connector is a 2-pin 2PL jack. In the center of the bottom edge is the 10-pin APL jack. Next to the APL is a 9-pin EPL jack that is also not used very often.