Optics Change Error

Optics Change Error
 

It’s not uncommon for the 500’s to display 'Optics Change' from time to time. There are two basic reasons for this; one and the most obvious, is when you change the aperture size or add the polarization kit. The second, which is most likely the reason, is when the system detects a signal change (amount of light returning back to the instrument) between now and the last time it did a full (white and black) calibration. The main cause for a signal change is dust getting into the optics. Carefully blow out the optics with clean, dry, compressed air and try calibrating again. In some cases the signal reference just needs to be updated due to time.

The frequency in which the instrument displays 'Optics Change' is completely dependent on the environmental condition the instruments are used in. The more dust flying around means the instrument will display 'Optics Change' sooner and more frequently. If the instrument is displaying 'Optics Change' on a daily bases there is a problem and it may need service. It is more common to see this message about once every other week, to once a month

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