193X713AAG01

About the 193X713AAG01

The 193X713AAG01 is a test instrument board manufactured by General Electric for their DC drive systems, such as the Speed Variator Drive or the SCR Drive. Both systems feature DC motors. These are closed loop, adjustable speed systems.

The 193X713AAG01 is built with a narrow front panel attached to the printed circuit board.  This front panel has a rounded handle attached near its bottom edge, which helps ease insertion or removal of the board from rack systems for replacement or maintenance.  The panel is attached to the circuit board by two screws attached through the bottom of the PCB and reinforced by a metal bar along its top edge. The panel includes the board ID number and the GE logo.  The left edge has a red rotary dial placed above a black rotary dial. To the right of these components are two rocker switches. The top rocker switch is white and is marked X10, X100, X1. The bottom switch is black and has no markings.  Below these two components, there is a small opening in the board that contains a thumbwheel. The right side of the panel is populated by a rounded panel that houses an analog volt gauge. This gauge measures up to three volts either side of null.  

The volt gauge mentioned above connects to a GE 50-185 Edgewise panel meter. This meter has a dust-tight case. A zero-regulator is located near the rear of the casing.   The accuracy of the meter is +/- 2% of full scale, with a response time of two seconds max. The 193X713AAG01 is populated with very few components beside the panel meter.  The board has several polyester vinyl capacitors mounted to its surface. Wiring connects the above mentioned components from the front panel to the PCB. These connections should be checked on a regular basis to maintain proper board operation.