The IS200VCRCH1B is a GE Mark VI board component. The MKVI is part of the Speedtronic family of gas turbine and steam turbine management systems that GE has been developing and improving since the release of the Mark I in the 1960s. The MKVI is the fifth management system in the Speedtronic series, featuring triple redundant control over all protection parameters and critical controls, as well as advanced control mechanisms for protecting and monitoring turbine systems.

The IS200VCRCH1B is used as a discrete input/output board. It is a single-slot board that has the same features as the VCCC board, but does not include a subboard, so it takes up less rack space. However, since the relay output of this board uses the J3/J4 port on the VME rack, the cable must be placed on the front panel. If you do not wish to do so, use a VCCC board instead of a VCRC PCB.

The IS200VCRCH1B has a front panel with two cable connectors (J33 and J44). The panel also contains three LED components, which are located near the top corner of the board. These leds are green, red, and orange, and are labeled Run, Failure, and Status.

The IS200VCRCH1B is surface-filled with two backplane connectors. Multiple conductive connectors are located on the board surface (P4 to P6). The board also includes resistors, diodes, capacitors and TP test points. The board has more than 30 transistors and 2 power supplies. Integrated circuits located on the surface of the board include FPgas and various SRAM and RAM chips. For more information about the IS200VCRCH1B, please refer to the data sheet, manual or Mark VI Control System Guide.