NCR 74 OFX (7874) - Interleaved 2 of 5 Check Digit Length1; Interleaved 2 of 5 Tone; Tone Frequency; Tone Length

5-32 Chapter 5: Programming
Interleaved 2 of 5 Tone
ThisparameterpermitsyoutoenableordisabletheInterleaved2of5tone.ScanHex
0todisablethetone(default)orHex1toenableit.Ifdisabled,theInterleaved2of5
toneisundercontroloftheUPCtonecontrol(generalgoodreadtone).
Tone Length
TheToneLengthparameterpermitsyoutosetthelengthoftheInterleaved2of5
tone.SetthisparameterbyscanningtheappropriateHextag(Hex0toHexF).Each
Hextagisincrementedby15milliseconds.Forexample,Hex0=0ms,Hex1=15
ms,
Hex2=30ms,Hex3=45ms,andsoforth.ThedefaultInterleaved2of5ToneLength
is75ms(Hex5).
Tone Frequency
ThisparameterpermitsyoutosetthefrequencyoftheInterleaved2of5tone.Setthis
parameterbyscanningtheappropriateHextag(Hex0 toHex7).
Hex Tag Frequency in Hertz
Hex0 702Hz
Hex1 781Hz
Hex2 868Hz
Hex3 961Hz
Hex4 1071Hz
Hex5 1187Hz
Hex6 570Hz
Hex7 633Hz
Note: ThedefaultInterleaved2of5tonefrequencyis1071Hertz
(Hex4).
Interleaved 2 of 5 Check Digit Length1
Interleaved2of5CheckDigitLength1setsthenumberofdatacharactersdefiningthe
taglength1thatrequiresaCheckDigit.Thistaglengthcouldbeoutsidethenormal
specificlengthorrangeoftaglengthsprogrammingforInterleaved2of5.This
parameterpermitsInterleaved2of5tags
ofacertainlengthtohaveaCheckDigit
whileotherInterleaved2of5taglengthsmaynotrequireaCheckDigit.