Spectra Tape Series - Page 58

Chapter 4 — Library Specifications Tape Drive and Media Specifications
September 2022 Site Preperation Guide—Spectra T200, T380, and T680 Library
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Detailed Specifications for LTO Cartridge Barcodes
Figure 5 shows the dimensional specifications for LTO labels with the
alphanumeric characters above the barcode.
Note: When using barcode labels with alphanumeric characters along
the bottom edge, the label must be positioned so that barcode is
at least 13.72 mm below the top edge of the cartridge to ensure
that the barcode reader can read the label.
LTO Barcode Element Specifications
 Minimum symbol height is 11.1 mm, measured to the inside of the
label’s edge.
 The wide-to-narrow ratio is 2.75.
 The narrow element width is 0.432 mm +0.03 mm or –0.076 mm.
 The nominal width of the wide spaces and bars is 1.188 mm.
 The inter-character gap is 0.432 mm +0.03/–0.076 mm.
 The minimum quiet zone at the beginning and end of a printed barcode
string is 4.32 mm (10 times the narrow element width).
 The total nominal barcode string length (including quiet zones) is
74.088 mm.
 The edge of the barcode is the edge of the printed area associated with
the bar. The edge roughness is the transition encountered as a
horizontal line is moved vertically from all black to all white. The edge
roughness maximum is 0.038 mm.
 Variation between all bars, white and black, must be less than ±0.0381 mm.
Figure 5 Barcode specifications for half-inch media; alphanumeric characters on top.
Alphanumeric
Barcode start character
11.1 mm,
minimum
17 mm
+0/–0.8
Quiet Zone
characters
79 mm +0/–.8
74.088 mm, nominal
4.32 mm,
Quiet Zone
Quiet Zone
4.32 mm,
minimumminimum
Barcode stop character