About the IS200VCMIH2BEE
The IS200VCMIH2BEE is part of the Unit Data Highway (UDH.) It functions as the master communication controller board. Data is read and transmitted to other boards via fiber-optic Ethernet (IONet.) VCMI boards may be designed for Simplex or for TMR (triple modular redundant) applications. Simplex boards have a single IONet port, while TMR boards will have three. The IS200VCMIH2BEE board is a TMR board. The IS200VCMIH2BEE uses SIFT voting (software-implemented fault tolerance.) Data is broadcast to all remote racks in one packet. VCMI boards in those remote locations extract the appropriate packet data. The IS200VCMIH2BEE is a double-sided board. The rear side of the board is primarily populated with:
- resistors and capacitors
- connector ports (including two backplanes,)
- inductors/chokes
- tp test points
- integrated circuits
- three IONet ports
- a single male serial port
- one reset button
- two set screws
- four sets of LED indicators (a set of 3, a set of 6, a set of 8, and another set of 3.)
The faceplate is also marked with the company logo and with the board number.
