62
Cleaning the magnetic encoder
The magnetic encoder head requires regular maintenance in order to ensure the integrity of the data encoded onto cards.
Cleaning of the magnetic encoder is carried out when the device runs an advanced cleaning sequence with impregnated cards (see the
“Maintenance” section of this manual for further information).
Repeatedly running the cleaning card through the device cleans the card feed rollers, the cleaning rollers, the print head and the magnetic
encoder read-write head.
If, in between two routine device cleaning runs (every 1000 cards inserted), the read-write process fails with more than one card, it is recommended
to run an advanced device cleaning sequence manually (please see the “Maintenance” section of this manual for the procedure to follow).
ISO 7811 magnetic encoding standards
1
Dots per inch
2
Except for the “?” character
3
Including the Start, Stop and LRC characters These characters are automatically handled by the magnetic encoder
Stripe number
Separator
Density
Character set
Number of characters
Stripe 1
^
210 ppp
1
Alphanumeric
(ASCII 32-95)
2
79
3
Stripe 1
=
75 ppp
1
Numeric
(ASCII 48-62)
2
40
3
Stripe 1
=
210 ppp
1
Numeric
(ASCII 48-62)
2
107
3
B
