Wasp Bar Code WLS 8400 FZ 用户手册
Scanning
2-7
Aiming
Do not hold the scanner directly over the bar code. Laser light reflecting directly back into
the scanner from the bar code is known as specular reflection. This specular reflection can
make decoding difficult.
the scanner from the bar code is known as specular reflection. This specular reflection can
make decoding difficult.
The scanner can be tilted up to 65° forward or back and achieve a successful decode (
). Simple practice quickly shows what tolerances to work within.
Figure 2-3. Optimum Scan Angles
65°
65°