TeachLogic VoiceLink IV User Manual

SAFETY INSTRUCTIONS ________________________

1. Read Instructions: All safety and operation instructions should be read

before operating this TeachLogic product.

2. Retain Instructions: Safety and operating instructions should be kept

for future reference.

3. Water & Moisture: This product should not be operated near water.

4. Heat Environment: Do not subject this product to excessive heat

conditions.

5. Power Source: This product must be connected to an AC power

source per the voltage input specified and marked

marked on the power supply.

6. Power Cord Caution:Power cable should be routed clear of foot traffic
and supported clear of kinking or abrasion.

7. Object Protection: Locate the operating unit so it will not be subjected
to falling objects or water entry.

8. Internal Service: User should not attempt to service this product.
All internal service must be accomplished by a
qualified technician.

9. Electric Shock: Do not adapt or modify the AC power plug thus

lifting the earth ground connection.

1

VoiceLink - Infrared Wireless Microphone System

The VoiceLink IV is an infrared wireless microphone system that can be added
to any sound system. It can be a supplement to a Bogen or TOA sound
reinforcement system or an addition to an Extron or Crestron multi-media
system. You now have the capability of using four (4) wireless microphones
anywhere in a conference room, boardroom, courtroom, or classroom.

The system is comprised of a domed sensor installed on the ceiling. The sensor
receives the IR wireless signal from the microphone/transmitter and sends a
composite signal to the receiver. The receiver transforms the composite signal
into an analog audio signal which is fed to the multi-media amplifier. The
amplifier then powers the speakers for enhanced sound distribution throughout
the room for improved the listener comfort and intelligibility for all.

The wireless transmitter gives complete freedom of movement anywhere in the
room. Two transmitters can be the Crescent style worn under the chin, a pendant
style worn around the neck or a body-pack clipped to the waist with an external
microphone plugged in thus rendering hands free mobility. In addition, two
handheld wireless microphone / transmitters can be used simultaneously by other
attendees or interactive group participation.

A noted feature of infrared signal transmission is that it is confined within the
room. The transmission signal will not penetrate walls, ceiling or floor; thus
providing 100% security. It also eliminates cross talk or interference with
adjoining rooms. An added benefit, all systems operate on the same transmission
frequencies, therefore; all transmitter / microphones will work in any room
equipped with the same VoiceLink system.

Easy to install - Easy to use

2

VoiceLink IV Receiver IR-468N

The VoiceLink IV (IR-468N) is a four channel receiver for simultaneous
reception of four Infrared wireless microphones. It receives a composite
signal from a dome sensor, processes it and produces a balanced analog
audio output for each microphone or a combined balanced output of all
microphone inputs to be fed to the input of an amplified sound system. It
features a volume control and signal presence indicator for each
microphone.

Front Panel ________________________________________________________________
Power Switch with an associate “Red” LED to indicate presence of power.

Channel: A, B, C, D volume controls for independent volume control for each

wireless IR transmitter input.

IR Transmission Indicator: A “Green” LED will light when the corresponding
transmitter for that channel is turned “ON”, informing you that a transmission
signal is being received

3

Rear Panel ______________________________________________________

Phone Jack (1/4”) is an unbalanced output of combined channels A, B, C, D.

Line / Mic Switch selects the output signal to be either “Line” or “Mic” level.

One male XLR Connector is a balanced line level output of combined channels

A, B, C, D.

Four male XLR Connectors are balanced line level outputs for each respective
channel.

Sensor Connection (RCA) Each sensor connection provides phantom power to a
sensor and receives a composite FM signal from the sensor. Four (4) sensor
inputs allow installation of multiple sensors for odd shaped or large rooms.
(Normally only one sensor is required)

Power Input Jack connects to the power supply, 12-15 volts DC, 1 Amp.

4

Infrared Dome Sensor (ICS-55

sensitive infrared receptor and provides optimum performance. One dome sensor
comes with the VoiceLink IV system. The sensor needs to be installed on the
ceiling. It comes with a T-Bar twist-on mounting/support bracket and 50 feet of
plenum rated cable with RCA connector on each end. The ideal location for the
dome sensor would be in the center of the ceiling. This will provide a clear signal
path for IR transmission from the transmitter to the dome sensor without
obstruction. In addition, you will have 360°
coverage and will minimize the transmission
distance for more reliable performance. It collects
the infrared transmission signal via 6 large
detecting diodes with magnifying lens. The sensor
is connected to the mixer/amplifier via the plenum
rated dual shielded cable.

) The ceiling dome sensor is a highly

5

Drop-in Battery Chargers

The battery chargers are specifically designed to recharge NiMH batteries. They
charge the batteries at an optimum rate and turn “off” at end of charge. The
chargers feature a recycle function, which is used to restore the battery charge
capacity and extend their service life.

charger recharges the Crescent (IRT-

BRC-50

30) or Body-Pack transmitter (IRB-30) and
Handheld (IRT-35). You merely place the
Crescent, Body-Pack, Handheld in their respective
slot. Connection will be made and charging will
commence. Charger will automatically control the
rate and maintain the charge.

BRC-101 provides a charging port for the pendant
or a handheld microphone. In addition, a tray
provides insertion of two “AA” NiMH batteries for
recharging.

BRC-202 is a dual charger for charging two
pendants or two handheld microphones or one of
each.

All drop-in chargers feature regulated charging rate, full charge maintenance,
recycle function and auto protection against incorrect battery insertion.

FOR USE WITH RECHARGEABLE NiMH BATTERIES ONLY.

6

Infrared Transmitters

Crescent (IRT-30)

The Crescent is a lightweight
microphone/transmitter designed to be
worn under the chin suspended by an
adjustable lanyard. The Crescent shape
was designed for efficient performance
and user comfort. The dual internal
microphones render optimum voice
pick up and quality reproduction. The
Crescent provides an auxiliary input
(3.5mm) to accommodate the insertion
of an iPod™ or similar device for supplementary program material.
A soft touch mute button cuts the microphone “off” for private conversation (the
power LED will flash in the mute position). A volume control allows adjustment
of the microphone volume. The external battery contacts accommodate the
convenient use of a drop-in charger.

An optional Plug-in microphone (LM-300) can be plugged into the aux input for
enhanced performance. Although the built-in microphones give satisfactory
performance, the plug-in microphone has a unidirectional element resulting in
additional sensitivity for more gain (more volume) before feedback.

Pendant Transmitter (IRT-89) with built-in microphone. The pendant
transmitter is usually worn around the neck for hands free movement.
However, it can easily be removed from the lanyard and used as a
handheld microphone. Two lanyards are provided: one with fixed
length and safety breakaway clasp and a longer adjustable cord style.
The 10 transmitting diodes are located in the top portion for very
efficient IR transmission. The power switch is accompanied by a
battery level LED (Green=Useable, Red=Needs Charge). The A-B
switch selects the transmission channel. The pendant is conveniently
inserted in either the BRC-101 or BRC-202 for recharging.

An optional Plug-in microphone (LM-300) can be plugged into the top
of the pendant for enhanced performance. Although the built-in
microphone gives satisfactory performance, the plug-in microphone is
a unidirectional element resulting in better vocal quality and much
more gain (more volume) before feedback.

7