VoiceLift System with PVS 405D Installation Guide
•
Introduction
4
Room Considerations
The following room factors are important to consider when you are planning the
installation of a VoiceLift system:
Interference and noise sources
Infrared and radio frequency noise can reduce the performance of the microphone
system. To minimize noise in the system, avoid mounting the VoiceLift receiver near the
following items:
•
Lighting, fluorescent or incandescent
— Keep the receiver at least 2 feet
(61 centimeters) away from a light source. Do not place the receiver where light can
shine directly into it.
•
Sunlight
— Place the receiver at least 6 feet (1.8 meters) away from windows and
skylights. If this is not possible, cover windows and skylights with curtains, blinds, or
other covering options.
•
Plasma displays
— Avoid placing plasma displays in close proximity to the
microphone system.
•
Electrical equipment
— Take placement of electrical equipment such as power
lines or supplies, projectors, dimmers, and computers into consideration, as these
could interfere with the IR signal.
•
Cellular phones
— Keep cell phones at least 2 feet (61 centimeters) away from
both the receiver and the microphone.
•
Other IR devices
— Take placement of other IR devices such as assistive listening
devices or IR remote controls into consideration, as these could interfere with the IR
signal.
VLR 102
Receiver
Blue J
ay Gra
duatio
n
Class o
f 2009
Anah
eim F
amily
YM
CA
Child
ren’s S
tation
IR
Transmitter
Plasma
Ceiling
Lighting
Window
2 Ft.
6 Ft.
Extro
n
Extro
n
PW
R
CHARGE
OFF/MUTE/CHG
ON
Figure 4.
Potential Causes of Noise Interference