User's Manual

OPN-4200n
Specifications Manual
12
8.9.2. Auto Trigger Operation
The scanner has an optional auto trigger mode in which it starts to read a bar code
automatically when it detects one.
When auto trigger mode is enabled, the scanner tries to detect bars at regular intervals and
when it detects 18 or more bars, it enters read mode in which it tries to decode a bar code.
When the scanner continues to detect bars after the reading has been done, it will assume
those bars are from the same bar code as the previous one and will not attempt to read it.
When the detecting conditions are not met, the scanner will perform the intermittent scanning
again until the next bar code is detected.
<Conditions>
Angle of paper : Skew angle, excluding pitch angle and dead zone,
specified in Section 8.6
Temperature / Humidity : Room temperature / room humidity
Ambient light : 500 ~ 1000 lx
Figure 8: Auto Trigger
Paper
Detection range