LRAD
450XL
GENASYS INC.
Manual Part No.: 112343-00 Rev. E
27
8.0 Operating Instructions
The following instructions offer a brief overview of the operation of the LRAD once it has been
mounted, connected, and powered up.
Operators of the LRAD must wear hearing protection with 20 to 33 dB of attenuation when
using the LRAD. The foam earplugs provided with the LRAD meet these requirements.
WARNING!
Avoid prolonged exposure to excessive noise levels.
Temporary or permanent loss or degradation of hearing can occur.
Hearing protection is required when operating the LRAD
.
Aim the LRAD at the desired target using either of the integrated sighting mechanisms that are
located on the side lifting handles of the unit. Center the crosshairs in the hole of the sight to
ensure proper alignment of the LRAD to the target. Use the pan/tilt handle on the base of the
LRAD to move the LRAD left/right or up/down to the desired position. Adjust the friction by
tightening/loosening the tilt friction adjustment knobs or the locks on the mount.
Adjust the volume control on the LRAD Control Module to a medium setting (yellow or green).
Ensure that the Voice Boost switch is set to OFF and the beam width switch is set to WIDE.
Select and play the desired audio track on the Control Module or key the microphone to
broadcast live speech. Adjust the Volume, Output Power, and Voice Boost settings until you
reach the desired volume level and are able to communicate with your target.
8.1 Positioning the LRAD for Operation
Many factors must be considered when positioning the LRAD-450XL for hailing and warning
operations. The LRAD-450XL Operations Zones shown in Figure 2 must always be taken into
account to ensure that personnel are not exposed to excessive sound pressure levels.
The following should be considered when placing the LRAD-450XL:
• The LRAD should have an unobstructed transmission path to the anticipated area at
which it will be aimed. Even small mast antennas may reflect some sound energy
decreasing the effectiveness of the unit as well as increasing reflected noise levels for
the operator and others nearby.
• Placement should be chosen so as to minimize or avoid transmission over decks or
balconies where personnel may be located.
• Shipboard operations should place the LRAD-450XL as close to the ship’s sides, bow, or
stern as possible.
