The GE RST Analog Termination Board DS200TBQBG1ACB features 2 terminal blocks. Each block contains 77 terminals for signal wires. The GE RST Analog Termination Board DS200TBQBG1ACB also contains 15 jumpers, 3 34-pin connectors, and 3 16-pin connectors. The 154 terminals are used to connect copper signal wires to the board. The signal wires are connected to other components and boards in the drive and the board receives the signals for processing. The signal wires also transmit some signals to other boards and components in the drive. The information that is supplied with the original board from the factory documents the signals that connect to each terminal. When you install the original board you can use that information to know which terminal to connect each signal wire.