The General Electric Digital I/O Board model DS200TCDAG1ADA features only one microprocessor and multiple programmable read-only memory (PROM) modules. It also contains an integrated block of 10 LED lights and a pair of 50-pin connectors. The GE Digital I/O Board DS200TCDAG1ADA also is populated with up to 8 jumpers and 1 LED that is visible from the side of the board. One 50-pin connector is identified as JQ and the other is identified as JR. The IDs are printed on the surface of the board. When you plan to replace the GE Digital I/O Board DS200TCDAG1ADA because it is defective, the replacement board might be a newer version of the same model. And in the interest of product improvement, the latest version will include the latest design changes. This might require that components need to be rearranged on the board in order to accommodate new circuit designs. Even if the 50-pin connectors are located in new positions, one 50-pin connector will be assigned JQ as the ID and the other will be assigned JR as the ID. The ribbon cables can be connected to the appropriate connectors based on the identifiers.
The jumpers enable a signal to be made between 2 of the 3 pins associated with the jumper. For example, the jumper can cover pins 1 and 2 or pins 2 and 3. If pins 1 and 2 are covered the signal passes between pins 1 and 2 and pin 3 is not connected to the circuit.