254764-001 Rev B 63
Figure 1 – Session Mode Screen Showing the X Dimension Measurement
Setting the Proper Scan Angle
The SV 2 Series requires a fixed scanning angle for two basic reasons:
1.
To maintain proper scanner signal levels in order to effectively decode symbols.
2.
To accurately calculate reflectance parameters.
Acceptable scanning angles range from 10 to 35 degrees from vertical (relative to the bar code being
scanned) depending on the material being scanned, mounting considerations, etc.
SV units incorporate proprietary, analog scanners. The scanner gain and offset are adjustable, allowing the
units to adapt to practically any material. ScanVision software allows easy setup of scanner gain and offset.
A quick method of adjusting the scanner using a special command ~Sc is described below. If the “quick
method” described below is unsuccessful, follow the setup procedure in the SV 2 Series Installation and
Setup Procedures section using the ~Hd commands.
1.
Set the SV unit in moving codes mode and picket fence bar code orientation via the ScanVision
Setup menus.
2.
Place the SV unit at an angle as close as possible to 22 degrees from vertical (relative to the bar
code) and at the correct scanning distance from the bar code to be analyzed. (See the Setting the
proper scan distance section above.)
3.
Place an SV Calibration symbol in the laser beam at the same distance and angle that will be used
in the final application.
4.
Go to the Transmit a Command screen by clicking on the
button
X dimension measurement shown in
ScanVision Session Mode as X (mils)
