GTCO Surface-Lit AccuTab - Users Guide User Manual

Page 29

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Surface-Lit AccuTab 29


9. If GTCOTEST indicates that the digitizer is functioning properly, check your software

application setup and AccuSet code for accuracy. If you have any questions about
your results or need help running GTCOTEST, contact our Technical Support Team
at 1-866-746-3015.

Technical Information

The AccuTab digitizer’s design provides the highest level of data integrity including
coordinate resolution, measurement accuracy and data stability – supported by high
reliability and system compatibility.

AccuTab incorporates a digitizing technique called Forward/Reverse Scan Averaging™, which
factors out errors resulting

from slight changes in the angle and height of the digitizer

cursor. This technology improves accuracy even at the edge of the tablet’s active area (the
location where most digitizers lose accuracy). The AccuTab will maintain its original data
integrity over the long term without the need for periodic recalibration, adjustments or
maintenance.

The point-sensing grid (located inside the tablet) is the single most important determinant
of AccuTab’s accuracy. To achieve the extremely tight tolerances required for the AccuTab,
its grid is photographically printed and chemically etched on a composite glass-fiber
substrate. This critical component is manufactured in a large scale, high-precision, printed
circuit board print and etch production facility owned and operated by GTCO by Turning
Technologies.

The performance of every AccuTab is verified on a high-precision automated measurement
fixture. A report generated by this system is included with the AccuTab. GTCO by Turning
Technologies guarantees that each AccuTab will maintain its performance for five years.

The AccuTab is compatible with all leading hardware and software, including class one
compatibility with ESRI’s ARC/INFO software.

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