Appendix A: Magnetic Heads Mechanical Design Guidelines - IDTECH SecureHead User Manual

7. Appendix A: Magnetic Heads Mechanical Design Guidelines

This installation guide is for installing ID TECH's magnetic heads with spring mounts.
1. ISO 7810 and ISO 7811 standards define the specification for standard magnetic stripe cards.
The location of each magnetic track's centerline is shown in below figure:
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.
The magnetic head needs the freedom to gimbal, or rotate about Track 2's centerline, and
move in and out to remain in contact with the card.
Below figure shows the rotational and linear movements that the head mounting must allow.
2. The head has to be mounted near 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, the
bottom of the slot, as the magnetic tracks on the card. Refer to the dimensions above.
3. A typical ID TECH magnetic head with 'spring' is shown below. The mounting holes are
centered on Track 2's centerline in the spring and 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.
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