Symbol SE 923, Integration Manual

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2-11
Installation
Location and Positioning
Symbol Position with Respect to a Fixed-Mount Scan Engine
It is sometimes necessary to mount the SE-923-I000A in such a way that it is able to read
symbols that are automatically presented to it, or that are always presented in a pre-
determined location. In these situations positioning of the SE-923-I000A with respect to the
symbol location is critical. Failure to properly position the scan engine and symbol may lead
to unsatisfactory reading performance.
Following is a series of steps you should take to ensure satisfactory operation of the SE-923-
I000A in your installation:
1. Determine the optimum distance between the scan engine and the symbol. Due to the
large variety of symbol sizes, densities, print quality, etc., there is no simple formula
to calculate this optimum symbol distance. Try this:
a. Measure the maximum and minimum distance at which your symbols can be
read.
b. Locate the scan engine so the symbol is near the middle of this range when being
scanned.
Check the near and far range on several symbols. If they are not reasonably
consistent there may be a printing quality problem that can degrade the performance
of your system. Symbol Technologies can provide advice on how to improve your
installation.
2. Center the symbol (left to right) in the scan line whenever possible.
Fosta-Tek Optics, Inc.
320 Hamilton Street
Leominster, MA
(508) 534-6511 Cell-caster, hard coater, laser
cutter CR39 exit window
manufacturer
Glasflex Corporation
4 Sterling Road
Sterling, NJ 07980
(908) 647-4100 Cell-caster Acrylic exit window
manufacturer
Table 2-4. Exit Window Manufacturers and Coaters
Company Discipline Specifics