Thermalert GP Series Operator’s Manual 37
B.5.2 GPS Laser Sighting Head
The laser sighting head (Figure B-2) allows fast and precise aiming at small
and quick moving targets. The laser is specially aligned with the lens to pro-
vide accurate, non-parallax pinpointing of targets. Press the on/off switch at
the laser switching box (see Figure B-3), and a small, bright red laser beam
shows you the target center. The laser dot indicates the center of the target,
not the size of the spot being measured. (To determine spot size, refer to the
optical charts in Section B.5.10.) Figure B-4 is a wiring diagram for the laser
switching box.
The laser is Class 2 with an output power less than 1 mW and an output
wavelength of 630-670 nm. The laser has an operating range up to 30 m (100
ft), depending on ambient light level. The laser complies with FDA Radiation
Performance Standards, 21 CFR, subchapter J, and meets IEC 825, Class 2
specifications.
42
(1.65)
150
(5.91)
8
(0.315)
13
(0.51)
1.5 inch
20 UN-2A
38
(1.5)
30
(1.18)
mm (inches)
Figure B-2: GPS Laser Sighting Head
Note: The laser automatically turns off after approximately 10 minutes of use.
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