19
DIFFICULT CODE SETUP OPTIONS (does not apply to 2D RF Laser)
Aiming Laser Dot
:
(LZ404-RF only) Sometimes it is difficult to see the laser beam and know you are on the bar code,
especially if you are attempting to read outdoors in direct sunlight. The laser can be output as a bright dot for a few
seconds, allowing the user to place the dot in the middle of the bar code; then the laser beam starts sweeping for the
read. As shipped, the laser beam never forms an aiming dot, but you can program a number of seconds that you wish the
aiming dot to appear before the beam scans using the following setting:
Scan
Start Setup
Scan
Aiming Dot Duration
Scan
1
to select a 1 second aiming dot, or
2
to select a 2 second aiming dot, or
3
to select a 3 second aiming dot, or
4
to select a 4 second aiming dot, or
5
to select a 5 second aiming dot, or
0
, the default, to eliminate an aiming dot.
Scan
End Setup
4-second beam
:
Another option with problem reading conditions is to increase the length of the time the scanner
attempts to read, from the default 2-second beam to a 4-second beam. To select the 4-second beam:
Scan
Start Setup
Scan
4-Second Beam
Scan
1
to select the 4-second beam
Scan
End Setup
To return to the default 2-second beam, scan
0
instead of
1
.
Automobile VIN READING
:
There is special support for reading automobile Vehicle Identification Numbers, VIN, remotely from the computer. (CCDs
will not read through a windshield, only laser scanners.) You may want to use the aiming dot above too.
"Difficult Code 39 Reading":
This feature facilitates reading of the VIN number on automobiles, which is often a
difficult-to-read bar code, especially reading through a windshield. VIN numbers are long, often weathered, often dirty,
and challenging to read.
To enable the more aggressive Code 39 algorithms necessary to read windshield VINs:
Scan
Start Setup
Scan
Difficult Code 39 Reading
Scan
1
for windshield reading
Scan
End Setup
To return to the default Code 39 decode algorithms, scan
0
instead of
1.
"Double-scan checking":
When reading a VIN, you will also want to disable double scan checking. The reader’s
default is to not output or beep until it has two successive identical decodes. This is an acceptable safeguard with most
codes, but with VIN numbers read through a windshield, you will have to deactivate double scan checking to get timely
reads.
Scan
Start Setup
Scan
Double Decode
Scan
0
to disable double decode
Scan
End Setup
To enable double scan checking, scan
1
instead of
0
.
Summary of Contents for 520-RF
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