2-26  Theory of Operation 
 
Summary of Specifications 
The preceding sections described where magnetic data can reside on a card. This 
section describes the general format of that magnetic data.  The following table 
summarizes the data specifications for the primary standards. 
ISO/IEC 7811 
JIS Type I 
JIS Type II 
Parameter 
Track 1  Track 2  Track 3  Single Track 
Bit Density  210  75  210  210 
Total Length  79  40  107  72 
Record 
Length 
76 37  104  69 
Data Type 
7-bit 
A/N 
5-bit N  5-bit N 
7-bit A/N 
 
Start 
Sentinel  
% ;  ;  DEL 
End Sentinel  ?  ?  ?  DEL 
Field 
Separator 
^ =  =   
Word Parity  ODD  EVEN 
LRC Parity  EVEN  EVEN 
N = Numeric character set 
A/N = Alphanumeric character set