INSTALLATION
3-5
MOUNTING ORIENTATION
Optimum operation of the bar code scanner demands proper orientation
of the scanner relative to the bar code label it is to read. It is not
possible to cover all situations so general rules are provided here. The
Applications Engineering Group at PSC Automation, Inc. is available to
assist in establishing mounting parameters in unusual situations. Call
(800) 843-2700 for assistance.
The optimum distance from the scanner to the bar code label varies with
the printing density of the barcode. Printing density refers to the width of
the smallest bar or space in the code symbol. Higher density labels
(narrower bars and spaces) must be closer to the scanner to be read,
while lower density labels (wider bars and spaces) can be read further
away. Figure 3-3 illustrates typical reading distances for several widths
of bars and spaces. The closest distance from scanner to code is
usually, but not limited to, 2.0 inches. The distances shown are typical
and meant to illustrate the performance capabilities of the scanner.
If density or bar width information about the code symbol is not known,
the optimum operating distance can be determined experimentally.
Connect a terminal to the Local Port as outlined in Section 5, Local
Programming. Enter the Configuration Menu. Select Page 2, Field
Parameters. Select the correct algorithm for the barcode to be used.
Return to the Main Menu and select Page 7, Diagnostics. Select Read
Percentage Test. Adjust the distance from the scanner to the barcode
label while viewing the diagnostics display. Find the distance where the
values displayed for #Decodes is the largest. This is the optimum
distance for that particular label. For most applications the label will be
read reliably at a value of 95 or more decodes. This operating distance
will be the center of the operating range for the label. Type CFG
<enter> to return to the main menu and turn off diagnostics mode.
Содержание LazerData Series 9000E
Страница 1: ...INSTALLATION AND OPERATION MANUAL LazerData Series 9000E BARCODE SCANNER DECODER...
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Страница 17: ...INSTALLATION 3 3 Dimensions Figure 3 1...
Страница 20: ...Series 9000E Scanner Decoder 3 6 Operating Distance and Beam Sweep Width of Various Bar Sizes Figure 3 3...
Страница 22: ...Series 9000E Scanner Decoder 3 8 Beam Sweeps Over Code Figure 3 5...
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