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Letter - M
Maximum current

Describes the size of a load that can be driven by an instrument with a Loop Impedance
mA output. For example a 500 ohm maximum loop impedance means that the instrument can supply 10 volts at 20 mA into this load.

MCT (Mercury Cadmium Telluride) or HgCdTe

A ternary alloy material used to build photon detectors that are sensitive in the 3-5 µm
and 8-14 µm regions of the spectrum and require TE cooling in the 3-5 µm region and
cryogenic cooling in the 8-14 µm region.

Minimum spot size

The diameter of the smallest object for which an instrument can meet its performance

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