Nikon DS-2MBW Instruction Manual page 165

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List of autofocus messages
The following messages may be displayed while the microscope is autofocusing:
Message
Now Focusing
Complete
Comp. Low Contrast
Warn. Exp.Over
Warn. Exp.Under
Error
VI Basic Operations
6 Using the Microscope Control
Now autofocusing.
Do not alter the microscopy conditions.
Autofocusing complete.
Sample lacking sufficient contrast for autofocusing.
Slight focal difference may take place in some conditions. Perform
manual focusing if this happens.
Microscopy condition is too bright.
Focusing stops at the original position for the autofocus.
Use the autofocus function under following conditions set on the
DS-L1 (when the sample is nearly in focus).
Scene mode: BF
Exposure time: Under AE setting, the exposure time should come
within 1/120 to 1/350 (in 1.3 MP display mode)
when the sample is nearly in focus. (Adjust with
ND filters, etc.)
Microscopy condition is too dark.
Focusing stops at the original position for the autofocus.
Use the autofocus function under following conditions set on the
DS-L1 (when the sample is nearly in focus).
Scene mode: BF
Exposure time: Under AE setting, the exposure time should come
within 1/120 to 1/350 (in 1.3 MP display mode)
when the sample is nearly in focus. (Adjust with
ND filters, etc.)
In the event of an error, one of the status codes (00–FF) will be
displayed on the screen.
(For more information, refer to the 90i Microscopy manual,
"Troubleshooting.")
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