Ascension laserBIRD, Installation And Operation Manual

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3: Configuration and Basic Operation
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Note: For a
description of the
'Performance
Motion Box', see
the section entitled
'Operating Region'
below.
Dual Scanner Operation
An important characteristic of the laserBIRD scanner is that its laser beams are modulated at a high
frequency. This makes the system less sensitive to interfering light sources, thereby improving
performance. When two scanners are installed such that their operating regions overlap, this
modulation frequency must be changed for both units. This reduces the likelihood of the Scanners
interfering with one another.
NOTE: Even with two modulation frequencies adjusted accordingly, it
is still possible to introduce some Scanner interference between two systems.
To avoid this, install dual scanner configurations such that:
1. Sensor motion is predominantly in the Performance Motion Box of its
respective Scanner.
2. The sensor from one scanner, never enters the Performance Motion
Box of the opposite Scanner.
Correct:
Sensor motion predominantly in
Performance Motion Box
Incorrect:
Sensor from one Scanner enters Performance
Motion Box of opposite Scanner