Citizen Systems BD2-2220 - Manual (Page 215)

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fn=65： Function 165 Specifying QRCode model
GS ( k pL pH cn fn n1 n2
[Code] < 1D>H<28>H<6B>H<pL><pH><cn><fn><n1><n2>
[Range] (pL+pH×256)=4(pL=4、pH=0)
cn=49
fn=65
n1=49、50
n2=0
[Outline] [The specification which depend on the model]
Specifies QRCode model.
n1 Function
49 Sets model 1.
50 Sets model 2.
[Default] n1=50
n2=0
fn=67： Function 167 Sets the module width of QRCode
GS ( k pL pH cn fn n
[Code] < 1D>H<28>H<6B>H<pL><pH><cn><fn><n>
[Range] (pL+pH×256)=3(pL=3、pH=0)
cn=49
fn=67
1≦n≦16
[Outline] [The specification which depend on the model]
Sets the width of 1 module of QRCode to n dots.
[Default] n=3