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he following pages cover topics related to faster scanning. This is
defined as correctly displaying the ILDA Test Pattern at an angle of 8
degrees or less, at a speed of 50K (50,000 points per second) or more.
The pages listed below provide additional details, and support for these
points.
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he TrueK 50 modification to Cambridge
model 6800
and 6210 scanners allows them to run at ILDA 50K. It provides the same or
better performance than the Cambridge-tuned 6210 scanners.
(Note: The TrueK 50 modification is no longer
being offered by Pangolin.)
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ambridge Technology Inc. introduced faster scanning in spring 1999,
with the model 6210 scanner and faster-tuned scanner amps.
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brief report on GSI's VM2000 scanners, which are designed for
large-beam applications.
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hese two pages discuss the ILDA Test Pattern, the only industry-wide
standard of comparison, and how to determine scan angles.
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ive different scanning systems compared in over 50 photographs. The
photos are in two general categories: test patterns and sample frames from
Lightspeed's "Creation" show.
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Test pattern photos. Comparing
the ILDA Test Pattern at its largest compliant size, at about 30
degrees, and a square wave test pattern.
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Creation photos. Comparing
rounding of square corners, an abstract frame, and a raster frame.
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Scanner-by-scanner photos. A
listing of all photos available for each of the five tested scanning
systems:
-- Catweazle LC II tuned to ILDA 30K
-- GSI/Lumonics G-120 tuned to ILDA 30K
-- Cambridge 6800 tuned to ILDA 30K
-- Pangolin TrueK 50 modification of 6800s,
tuned to ILDA 50K
-- Cambridge 6210 tuned by Cambridge to
"around ILDA 60K"
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About the tests. Background on
how the tests and photos were done.
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