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For “Rack Mount” column:
“Y” = device designed for 19” rack mounting;
“N” = device would have to sit on a rack shelf
For “Location Requirement” column:
“Close” = device must be located beside or above the etalon;
“Far” = device could be located ~4 m from etalon
For “Controlling Software” column:
“Etalon” = device is only controlled by software on etalon PC;
“KPF” = device needs to be controlled by KPF instrument control software
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