User guide

VoiceLift System with PVS 405D • Introduction 2
• Receiver (VLR 102) — The receiver is the main sensor for the VoiceLift System. It
features the following:
• Captive screw connectors for auxiliary input, RS-232, contact input, and relay
output (see page 21)
• RJ-45 connectors for power, communication with the PoleVault switcher, and
audio output (see page 20)
• Two DIP switches that enable or disable the volume change tone and the
auxiliary input mode (see page 20)
• Charging station (VLC 202) — The microphone charging station contains slots in
which one or two microphones can be placed for their batteries to be recharged. The
charging station is powered by an external power supply (see Charging Station on
page 7).
Features
• Lightweight microphones — The pendant and handheld microphones are made
of lightweight and impact-resistant polycarbonate material. The pendant microphone
can comfortably be worn around the neck or clipped to clothing.
• Built-in DSP feedback suppression — The receiver has an integrated digital
signal processor (DSP) that suppresses feedback while maximizing sound quality and
intelligibility. The DSP prevents ringing caused by frequencies cycling out of control
through the microphone and speakers.
• Two microphones per classroom — The VoiceLift System supports up to two
pendant microphones, or one pendant and one handheld microphone, in each
classroom. The pendant microphone can be used by instructors and students.
• Power (Mute) buttons — The microphones contain easily accessible buttons on the
sides or front to mute the sound and power the microphone on and off.
• Volume buttons — On the pendant microphone (normally used by the teacher or
presenter), a Volume button is conveniently located on the side, enabling the teacher
to easily raise and lower the volume during a presentation.
On the handheld microphone (normally used by the student), Volume Up and Down
buttons are located behind the battery cover. These buttons can be used to set the
volume prior to use but cannot be accidentally pressed during the presentation.
• Instant alert e-mail messaging — The VoiceLift receiver can be wired to enable
the teacher to send e-mail alerts by pressing the microphone Volume button when
assistance is required (see Relay (Rly) port on page 21 and Special Application:
Instant Alert on page 29 for details).
• Auxiliary line input — An auxiliary input connector on the microphone enables input
from an MP3 player or other source.
• Battery power — The VLP 202 and VLH 102 microphones are each powered by a
single NiMh or alkaline AA battery. NiMh batteries can be recharged via the VLC 102
or VLC 202 charging station or by a wall charger.
• Charging station — The VLC 202 desktop charging station holds and recharges up
to two VoiceLift microphones simultaneously.
• Receiver mounting options — The VLR 102 receiver is compact and can be
mounted on a wall or ceiling, or to a junction box.