IBM 6400 Programmer's Reference Manual page 140

Bar Code Command Set
Unit Module Sizes for Rotated Bar Codes
Note: H=120H x 72V PQC setting and L=60H x 72V PQC setting except for UPC
type 90 and 270 degree orientations where both H and L=120H x 144V.
Unit Module Sizes for 90-Degree and 270-Degree Bar Codes
Unit Module Sizes for 0-Degree and 180-Degree Bar Codes
Notes:
1. The meaning of byte 17 (modifier byte) is dependent upon the bar code type.
2. BCDD bytes 18 and 21-26 and WBC command byte 0 are not applicable to
3. H=120H x 72V PQC setting and L=60H x 72V PQC setting.
124
6400 IPDS
Table 100. Unit Module Sizes for 90-degree and 270-degree orientation Bar Codes
Unit Narrow
Module Element
Width Width
17 17.36
17 17.36
17 17.36
35 31.24
35 31.24
49 45.12
49 45.12
49 45.12
49 45.12
49 45.12
63 59.01
63 59.01
Table 101. Unit Module Sizes for 0-degree and 180-degree orientation UPC type Bar
Codes
Unit 1x 2x
Module
Width
17 16.67 33.33
25 25.00 50.00
21 20.82 41.64
For the meaning of this byte, see "Bar Code Type, Name, and Modifier
Description and Values" on page 125.
Postnet. The Postnet specification defines values for these parameters.
Wide Wide-to-Narrow
Element Ratio
Width
38.19 2.20
45.17 2.60
52.08 3.00
69.67 2.33
86.85 2.78
100.62 2.14
100.62 2.23
100.62 2.43
114.60 2.71
121.37 2.71
142.21 2.23
142.21 2.23
3x 4x
50.00 66.67
75.00 100.00
62.46 83.28
Contrast
H
HL
HL
HL
HL
HL
HL
HL
L
H
L
H
Contrast Rotation
LH 0, 180
H 0, 180
HL 90, 270