U S E R M A N U A L D A Y C O R ® S U P E R B
6
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Visible only mode
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UV only mode
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Combined mode
While in the UV only mode, the status line displays the UV gain value only .
The visible only mode is handy when there is a reflection on glass insulators that might
be mistaken for corona. The camera enters the visible only mode during visible
zooming.
Focusing
By default the camera is set to auto focus, and the status line reads AF. The UV focus is
synchronized with the visible focus and follows it as can be heard through the sound of
the UV camera motor when the visible focus changes.
Changing to manual focus is done through pressing on the focus function-key. As a
result a value of the current focus, between 16 and 80, appears on the LCD. The up
and down arrows allow 64 steps of focusing. There is a correlation between the
numbers and the distance of the camera from the corona source. 16 is the value for
infinity and 80 is the value for a distance of 3 meters.
The focus scale is also used when the camera needs to be recalibrated, a procedure that
can easily be performed by the camera operator (special instructions).
When to use manual focus
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When Corona is out of focus while background objects are in focus, as
happens sometimes in substations. The camera is focusing on a prominent
object which is not near the corona so that the corona appears non focused
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Poor illumination conditions might fade out details and slow down or prevent
accomplishing auto focus
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To perform an accurate counting you might wish to defocus and re-focus (see
below)
UV Gain
UV gain values are scaled between 0 and 250. 250 represents the highest sensitivity.
It is recommended to start the inspection with a high gain of about 180 and decrease
the gain when a corona is detected. This will enable pinpointing the source of the
corona. Pressing on gain function-key reveals its value, pressing again will restore its
default value. To change the default value, select a desired UV gain and press on the
Save function-key for 5 sec. A confirmation message will appear on the LCD screen
* It is advised to read the warranty terms before operating the DayCor
®
