ocr: Transaktionskort - Dataregistrering pa SVENSK STANDARD SS-IsO 7811/2 magnetrand UHoava 1 Sida 7 8-4 Clocking bits 9.1 Aiphanumarte tract- Track 1 ing The Dits lead-In (zeros) up 23r1 to 1U trie the first space data from bit the shall last be data recorded bit to with the end clock- of 9.1.1 Bit derisity the nutel. recur ding sholl olso be recorded with alocking bits (age the per Tho nominal millimotro bit (210 denaity bits per of the inch + recorded 5 % whon signe! shell mcasurod be 0.3 along bits NOTE - rt is recconived that zeros grior to 2.9 mm (0. 714 inl or after the spacing lino parallal ...