Method of calibrating a magnetic character bearing document

Details Method of calibrating a magnetic character bearing document Method of calibrating a magnetic character bearing document

1994-05-04

1996-01-30

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Calibration

209569, G01R 3500, B07C 5344, G06K 900

Patent

active

054882931

ABSTRACT:
A method of calibrating a document having a magnetic character on the document comprises measuring by testing equipment, magnetic flux level of a known current passed through a specified conductor to establish a first signal having a first signal strength represented by a unit value, passing the document through the testing equipment to provide a second signal having a second signal strength produced by magnetic flux of the character and assigning a value to the second signal strength in comparison to and shown in units as a percentage of the unit value of the first signal strength.

REFERENCES:
patent: 5126547 (1992-06-01), Norman, Jr.

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