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What is the function of the resistor located in the screw-down terminals of the SDM2VC camera?

This resistor is a default sensor resistor. The resistor sets the gain to a default level if Quad wire (aka ``station wire``, which is two pair wire) is used. When using Quad wire the default sensor resistor should remain in the terminals. If Category-5, 4-UTP (Unshielded Twisted Pair) wire is used, one pair of the wires is the ``sense pair``, which senses the length of the Category-5 wire run and sets the gain appropriately. When using Category-5 wire the default resistor should be removed and discarded.

CTA-ID : 11831
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