Zeiss CIRRUS HD-OCT 500, User Manual

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Performance Verification Check
2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual
12-12
In effect, when there is a failure condition, you can clearly see that one or both of the
scan line indicators fail to pass within, even marginally, the white cross–hair in the
center.
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NOTE: Evaluation is somewhat subjective. We offer the examples above as guidelines. If
you drag the scan lines, you will observe that there is only a two or three pixel range of
movement while still within the pass condition, and only a one pixel difference between a
marginal pass and a failure. The center cross–hair defines a stringent range of tolerance.
Therefore, you should confirm a failure only if the scan line indicators lie wholly within the
center of the cross–hair pattern.
• To confirm your observation, you should switch back to 0% Transparency.
• If your observation is confirmed initially, you should remove and re–install the test
tool to ensure it is seated properly and then run the check again.
• If the system still fails the test, contact Zeiss customer service. In the U.S., call 800–
341–6968. Outside the U.S., contact your local Zeiss distributor.
If you want to repeat the test, we recommend you first remove and re–install the test tool.
Fail—horizontal line clearly within black Fail—vertical line clearly within black