Agilent Technologies U1840A Medalist sj5000 Hardware Manual page 91

Lighting Calibration
N O T E
Agilent U1840A Medalist sj5000 Hardware Manual
Lighting calibration sets the current output for each lighting
ring. It is performed over a gray card, which is used to calibrate
the illumination evenness. The gray card is manually loaded
into the sj5000. The system will then:
• Turn each ring on.
• Record the mean gray level intensity over the gray card.
• Compare it to a target mean intensity.
• Adjust the current output to bring the recorded mean as
close as possible to the target mean.
The new calculated means are referred to as Achieved Means
and are displayed in the Calibrated Means column in the
Lighting Controller window.
Lighting auto-calibration calculates all ring lighting modes available on
the sj5000.
The procedures for lighting calibration are described in the
following sections:
• Lighting Calibration
• Auto Calibration: for automatic calibration
• Calibration on Location: at automatic calibration at specific
location
The calibration functions and lighting information are accessed
from the Lighting Controller window. For a summary of the
features, see "The Lighting Controller Window"
Camera and Lighting Calibration
(Manual): for manual calibration
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