ID TECH SecureHead SPI with TMIV User Manual
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15.
APPENDIX I: Magnetic Heads Mechanical Design Guidelines
This installation guide is specifically to be used when installing ID TECH’s magnetic heads with spring
mounts.
1.
ISO 7810 and ISO 7811 standards define the specification for all “standard”
magnetic stripe cards. The proper location of each magnetic track’s centerline is
shown in the figure below (Note: the reference surface for the card is the edge of
the card; and it is the surface the card rides on when referring to the magnetic
head).
2.
The head mounting should allow the head to follow the magnetic stripe on the
card. In other words, the magnetic head needs to have the freedom to gimbal
(rotate about Track2’s centerline) and move in/out to remain in contact with the
surface of the card, after head is assembled to the rail. Below figure shows the
rotational and linear movements that the head mounting must allow.
3.
The head has to be mounted in relation to the reference surface on which the
card slides so that the magnetic tracks of the head are positioned at the same
distance from the reference (bottom of slot) as the magnetic tracks on the card
(refer to dimensions in #1 above). A typical ID TECH magnetic head with spring is
shown below. The mounting holes (centered on Track2’s centerline) in the spring
are used for mounting the head and positioning the track locations. (Note: the
oblong hole in the spring must be oriented as shown in the drawing to locate
tracks 1 through 3 properly)