Grass Valley PLS200 - Manual (Page 159)

Label Degradation after Exposure to Light
PLS200 Installation and Operation 137
Label Degradation after Exposure to Light
The ratio of space (light) reflectance to bar (dark) reflectance should not fall
below 4 to 1 after 30 days’ exposure to a fluorescent source at 100 foot-candles.
Optional Features
If desired, you can include alphanumeric characters and background colors on
the bar code labels.
NOTE: Alphanumeric characters and background colors are optional. You do not
need to include them for proper library operation. They are recommended,
however, to allow humans to easily identify tapes by number.
Alphanumeric Characters
If you want to use alphanumeric characters on the labels, the characters should
be centrally located in the area indicated in Figure C-4. Label characters must
also have a sequence that is identical to the adjacent bar code.
Figure C-4 Area for printing alphanumeric characters
0
0
0
0
0
1
8
7
.475 (12.1)
2.000 (50.8)
Alphanumeric
Label
Characters