MagTek InSpec 9000 - Manual (Page 75)

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APPENDIX C. CARD STANDARDS
In 1973, the first American National Standards Institute (ANSI) card standard was issued which
established a Reference Standard for the magnetic stripe's signal amplitude along with other card
requirements, all directed toward defining minimum parameters for card based information
interchange.
The ANSI committee responsible for Financial Transaction Card Interchange, in 1985, agreed to
accept the International Standards Organization (ISO) Card Interchange Standards as the U.S.
standards and to send an American delegation to ISO meetings to participate in future
standardization work.
In 1993, ISO completed a lengthy review of the current card standards and have released an
updated version of ISO 78xx series standards. Current card standards are listed in this appendix.
ISO PARAMETERS
ISO 7811-2, -4, and -5 parameters for cards that the InSpec 9000 Card Tester measures are as
follows:
TRACK 1
Parameter
ISO Term New Card Limit Used Card Limit
Signal Amplitude*
Ui 136%
≥ Ui ≥ 64%
136%
≥Ui ≥ 52%
Average Bit Density Ba ± 8% ± 8%
Flux Transition Spacing Variation Bin ± 8% ± 15%
Subinterval Spacing Variation Sin ± 10% ± 20%
Adjacent Bit Cell Variation Bin+1 ± 8% ± 15%
Adjacent Subinterval Variation Sin+1 ± 10% ± 30%
Start Sentinel Position
0.293" ± 0.020" (7.44 ± 0.50 mm)
per ISO 7811-4
* as a percent of Reference Signal Amplitude