Magtek InSpec 9000 Manuel d'utilisateur télécharger pdf (Page 20)

InSpec 9000 Encoded Card Tester

3. If there is still some doubt about the accuracy of the Tester, run the other test card and

check the values as described in step 2. If necessary, perform the 0.5-micron head

polishing procedure below.

Head Polishing - 0.5-micron (Abrasive Card), P/N 96700014

If the Tester shows a change in amplitude of approximately 15% to 20% after the Test Card

Procedure is run, use the 0.5 micron (abrasive) head-polishing card, P/N 96700014, and clean the

head as follows:

1. With the abrasive stripe up and to the left, insert the card and click on Clean Unit.

2. The card will move in and out of the Tester three times.

Caution

Do not run the head-polishing card with abrasive stripe down, or

damage to the roller surface and the Tester may result.

3. Remove the head-polishing card from the Tester, and run the cleaning card.

Note

Do not discard the head-polishing card after one use; this card is

for multiple use.

4. Perform the Test Card procedure to ensure the Tester is within tolerance. If the results

are not within spec, call service personnel.

SAMPLING TECHNIQUES

The InSpec 9000 Encoded Card Tester is designed for a production environment; that is, samples

are taken from a large production run and tested on the InSpec 9000. The samples tested

represent a lot or batch. The lot or batch is accepted or rejected on the basis of these samples.

More than sampling lots for acceptance or rejection, the Tester also reveals problem trends with

the processes of producing, encoding, or testing cards. Because of the graphics presentations

and database in the Tester, problem trends are easier to identify. (See Section 4, Graphics

Presentations, Interpreting Performance Charts.)

There are many techniques for sampling, and the example below is commonly used in industry.

The example is taken from the following publication:

ANSI/ASQC Z1.4 - 1993, American National Standard, Sampling Procedures and Tables for

Inspection by Attributes, American Society for Quality Control.

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Magtek InSpec 9000 Manuel d'utilisateur Page 20