Aim beam onto white line 
Note: Do not let the verifier’s beam stop on a bar code when logging data, because it logs unwanted data.
B a r C o d e T r a v e l S p e e d C o n s i d e r a t i o n s
A bar code should be present in the beam for at least five scans for most reliable operation. The verifier performs a minimum of 100 scans/analyses per second. At that rate, each analysis is accomplished in 10 milliseconds max. Therefore, a bar code must be in the beam for at least 50 milliseconds to be reliably analyzed.
Parallel Bar Code Direction
In parallel bar code (picket fence) travel direction, a bar code is in the laser beam throughout the height of the shortest bar in the code. An easy way to estimate the fastest speed the code can travel through the beam is to divide the height of the shortest bar in the code by the maximum time required for the verifier to take five scans of the code.
Example: Calculate the maximum travel speed where the shortest bar height in a code is .5 inches and the verifier being used performs a minimum of 100 scans/analyses per second. Five scans requires 50 milliseconds (.05 seconds) to gather, so .5 inches (bar code height) divided by .05 seconds (time needed to gather 5 scans) = 10 inches/second. Therefore, the maximum speed the code can travel through the beam is 10 inches per second.
Installation & Setup