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General. This system is divided into two sides, one is the transmitter and one is the receiver. They are connected by a fibre link. The receiver is used in conjunction with a PC to measure voltages that are picked up by the transmitter. The transmitter is normally in the high voltage area where the sense voltages are connected directly to the transmitter. The fibre optic link has a transmit level of approximately ?20dB?s and a receive sensitivity of ?23dB?s. The receiver units are installed in a 19?card frame Operating from 220VAC. It is automatically turned on when the power is applied to the rack. The unit has 3 Isolated input channels and 3 ordinary input channels with common ground. The whole unit is isolated via fibre link to the receiver. The transmitter operates from a 12Volt DC battery and draws less than 200mA. The receiver operates from 220VAC.
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