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How long can the mirror head to controller cable be without sacrificing performance?

April 26, 2017cable controller Head mirror PERFORMANCE sacrificing

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How long can the mirror head to controller cable be without sacrificing performance?

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Cable length from the optical head to the controller of up to 35 feet can be used with little to no decrease in mirror performance. We use differential input instrumentation amplifier on the user input commands (x and y commands) so if long cables are used, the drive signals should be differential to minimize noise.