Instrument Reports Minus Dot Values

Taking a Dot measurement and it is coming back as a negative or minus value.

In the 500 series instrument if Patch Smarts (the instruments logic to automatically know if the patch being measured is a Solid, Tint, or Paper) is turned off under the configuration menu (as is generally recommended) it is possible for the instrument to display negative readings for a dot or tint value measurement. This can occur for several reasons:
 

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