Epson PLQ-30 - Manual (Page 128)

Recording layout of magnetic stripe
DIN/ISO, IBM3604, ANSI, ISO7811, IBM4746, and ISO8484
1 block format
Erase Data T0 Erase L0
I
SOM EOM
LRC
2 block format
Erase 1st Data
1st Block Data Area 2nd Block Data Area
2nd Data Gap0 T0 Erase L0
I
SOM SOM EOM EOM
LRC LRC
Direction of bit pattern
PLQ-30/PLQ-30M User’s Guide
Product Information 128