TeachLogic VoiceLink I User manual

owner’s manual
Infrared Wireless Microphone System
VoiceLink I

owner’s manual
VoiceLink I

notes
Date of Purchase:
Model Number:
Serial Number:
Notes:

contact
thank you
If you should encounter
some unresolved issue,
please contact TeachLogic
customer service depart-
ment for further assistance.
4
owner’s manual
Congratulations on the purchase of your new
VoiceLink I Infrared Wireless Microphone Sound
System. You can be assured that the VoiceLink I
fulfills all specifications and was produced to very
high quality control standards. TeachLogic
incorporates the latest state of the art technology,
employs the most advanced manufacturing
methodology and uses only premium quality
components to assure many years of reliable
performance. We appreciate your confidence by
your selection of our product. It is TeachLogic’s
intent to uphold that confidence by providing
factory assistance and dealer support.
We hope you will take the time to view this manual
to familiarize yourself with the product operation
and features. This manual will help you learn to
use and gain the maximum benefit of the VoiceLink
I system. The manual provides a basic explanation
on the principles and advantages of infrared
transmission. Followed by the system description,
operation and installation instructions, the manual
will conclude with maintenance and troubleshoot-
ing procedures.
Brian Van Waay
President
1•800•588•0018
sales@teachlogic.com
1•760•631•1283
www.teachlogic.com
VoiceLink I

safety instructions
Read Instructions
All safety and operation instructions should be
read before operating this TeachLogic product.
Retain Instructions
Safety and operating instructions should be kept
for future reference.
Water & Moisture
This product should not be operated
near water.
Heat Environment
Do not subject this product to excessive heat
conditions.
Power Source
This product must be connected to an AC power
source per the voltage input specified and marked
on the power supply.
Power Cord Caution
Power cable should be routed clear of foot traffic
and supported clear of kinking or abrasion.
Object Protection
Locate the operating unit so it will not be
subjected to falling objects or water entry.
Internal Service
User should not attempt to service this product.
All internal service must be accomplished by a
qualified technician.
Electric Shock
Do not adapt or modify the AC power plug thus
lifting the earth ground connection.
certifications
Listed
US CA
TeachLogic systems are
manufactured using lead-
free processes and are free
of materials harmful to the
environment. They conform
to the most stringent new
European guidelines for
consumer products (RoHS).
Recycle—Do not dispose
rechargeable batteries in
trash. Actually it is unlawful
to do so in CA, NY & ME.
Contact: Earth911.com
1-800-CLEANUP
Save our resources and
don’t contaminate.
Go Green
caution

transmitter
table of contents
About Infrared..............................................................
Product Description.....................................................
VoiceLink I Components.............................................
Infrared Sensors...........................................................
Microphone/Transmitters....................................
Drop-in Battery Chargers.........................................
Installation of System.................................................
Installation of Corner Sensors...........................
Installation of Ceiling Sensor...................................
Operation of VoiceLink I System.............................
Wiring to Projector System.................................
Troubleshooting...........................................................
Specifications.........................................................
Five Year Limited Warranty....................................
1
2
3
4
5–7
8
13
10–11
12
13
14–15
16
17–19
20
6
owner’s manual
VoiceLink I

a brief word about infrared
Infrared is a light ray that is below the visible spec-
trum, just like the sound spectrum extends beyond
your hearing ability. An example of infrared trans-
mission is the remote control for your TV set. When
a button is pressed, a beam of infrared light is
emitted by a Light Emitting Diode (LED) from the
remote control. It is detected by a receiving diode
in your TV set. When you press a certain command
on your control, the internal electronics cause the
infrared light to flicker in a programmed sequen-
tial pattern (called modulating the light beam).
The modulated infrared beam is detected by the
receiving diode and is electronically decoded. The
decoded signal activates the circuitry to perform
the command function on your TV set.
So how does this apply to the infrared communi-
cation system you are about to start using? The
microphone/transmitter has several Light Emitting
Diodes (LED) that emit infrared light beams to the
sensor located in the corner of the room. Now
when you talk into the microphone, the micro-
phone element modulates the light beam, causing
it to flicker in sync with your speech. The sensor
detects the sequential signal and the electronic
circuitry in the VoiceLink I converts that sequential
signal into a line level analog audio signal. Now
that audio signal can be fed into an amplifier. The
amplifier magnifies the electronic signal and sends
it to the speakers. This causes the speaker cone to
move in sync with your voice. The speaker repli-
cates your voice and disperses your voice evenly
throughout the room.
1
IR transmission
The IR transmitter
transmits directly to the
sensor. However; due to
the strength of the IR
transmitter, the infrared
signal will bounce off the
walls, ceiling and floor for
reception thus providing
continuous connectivity
throughout the room.
Benefit: total freedom
of movement within the
room with no restriction
of orientation.
Infrared will not
penetrate a solid surface
thus preventing any
transmission from
going out of the room.
“What’s said in
the room, stays in
the room”.

2
owner’s manual
2
VoiceLink I
product description
The VoiceLink I is an infrared wireless microphone
system that can be added to any sound system. It
can be a supplement to an existing multi-media
system to expand it's utilization to provide voice
reinforcement.
The addition of a VoiceLink I system to your multi-
media system will transform your classroom sound
system into a totally hands free voice re-enforce-
ment system, resulting in reduced voice fatigue,
enhanced student listening and improved student
learning. The wireless function permits 360° con-
nectivity throughout the classroom regardless of
body position or orientation.
The system is comprised of an infrared detect-
ing sensor(s) installed in the ceiling or corners.
The sensor collects 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
powers the speakers for even voice reinforcement
throughout the room.
The microphone / transmitter can be the Sapphire,
Crescent or Handheld. The rechargeable batter-
ies will provide 6 – 8 hours of service per charge.
The drop-in charger will recharge the batteries
overnight, ready for another day’s use.
Reliable
performance.
Use with
confidence.

3
front of IR-100 receiver/mixer
back of IR-100 receiver/mixer
Power LED (Red)
Power Button (Black)
Microphone Volume Control
Microphone Transmission Indicator
LED (Orange)
Unbalanced Line Level Output
(RCA)
Balanced Line Level Output (3-pin
Phoenix Connector)
Auxiliary Input (3.5mm)
Auxiliary Volume Control
Auxiliary Signal Present Indicator
LED (Orange)
Two Sensor Inputs (RCA)
Power Input: 12VDC
1
2
3
4
5
6
7
3
4
1
2
7654321
4321
VoiceLink I system
The VoiceLink I system is comprised of a micro-
phone / transmitter, either the Sapphire (IRT-55),
Crescent (IRT-30), or Handheld ( for voice transmis-
sion to a ceiling sensor (ICS-55) or corner sensor(s)
(IWS-35) that sends the signal to the receiver /
mixer (IR-100). The receiver processes the signal
and produces an analog signal of your voice for
input to an amplified sound system.
POWER
CH A AUX IN
1 GND
2 +
3 –
LINE OUT BALANCED SENSOR INPUTS DC IN: 12V
UNBALANCED

2
owner’s manual
4
VoiceLink I
owner’s manual
IWS-35 corner sensor
ICS-55 ceiling sensor
sensor cable
The corner sensor is the component that receives
the infrared transmission from the microphone/
transmitter and sends the signal to the receiver
via a dual shielded cable. The sensor has 2 large
receiving diodes. The receiving pattern of the sen-
sor is like an elliptical shape cone about 90º hori-
zontal by 60° vertical. It is designed for mounting
in a corner near the ceiling. Its interconnect is a
short cable with a female RCA connector. The
sensor can be installed on a wall with satisfac-
tory performance, but may have some dis-
connectivity at extreme off-axis locations. An
additional sensor can be installed for broader
coverage or as a supplement to cover a remote
area.
The ceiling sensor is the preferred infrared sensor
for optimum performance. This is the unit that
needs to be installed on the ceiling. It comes
with a 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 the IR transmission from the
transmitter to the dome sensor without obstruc-
tion. In addition, you will have 360° coverage and
will minimize the transmission distance for more
reliable performance. It collects the infrared trans-
mission signal via 6 large detecting diodes.
A Cable connects the sensor to the receiver. The
cable is dual-shielded with a male RCA connector
on each end and is plenum rated.
receiving diodes. The receiving pattern of the sen-
Yellow light indicates that
the sensor is receiving
power from the receiver.
power “on” LED

5
infrared microphone/transmitters
The infrared microphone/transmitter is comprised of a microphone input, signal processing
circuits and several emitting diodes that transmit the vocal signal to the sensor.
The microphone/transmitter can be the Sapphire, Crescent or Handheld. The rechargeable
batteries will provide 6–8 hours of service per charge. Place the microphone/transmitter in
the charger for overnight charge and it will be ready for another day’s use.
The drop-in battery chargers are specifically designed to recharge lithium & NiMH batter-
ies at an optimum rate for maximum operating capacity and extended service life. Charger
will automatically start charging the batteries upon insertion and will shift to a maintenance
charge when batteries are fully charged.
The Sapphire’s vocal clarity is unsurpassed. Its
high level output is achieved by the unidirectional
(Cardioid) microphone and a unique free air
suspension system. With a built-in breath filter, the
Sapphire can function as a pass around hand mic.
The strategic alignment of the emitting diodes
assures reliable connectivity throughout the room
without static or drop out.
With a tap on the power button, the microphone
is muted for private conversation—tap again to
restore to normal operation. The auxiliary input
allows wireless playback of your iPod™ through
the Sapphire. A three position slide switch pro-
vides selection of low, med, or high microphone
sensitivity.
features
• Elegant design
• Only 1.4 oz. including bat-
tery
• Long life “Lithium ion”
battery
• Rechargeable via USB cable
to computer
• Battery level indicator –
Back light under power
switch
• Momentary mute button,
backlight blinks in mute
mode
• Push “on/off” power
• Channel “A” or “B” select-
able
• Three level microphone vol-
ume switch (low, medium,
high)
• Auxiliary input (3.5mm)
• Wear with a lanyard or slide
directly on neckline collar
(IRT-55) sapphire transmitter

2
owner’s manual
6
VoiceLink I
owner’s manual
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 vocal
reproduction. The Crescent provides an auxiliary
input (3.5mm) to accommodate the insertion of an
iPod™ or similar device for wireless transmission
of 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.
features
• Lightweight (3 oz.)
• Snap-in lanyard attachment
(Breakaway Safety)
• Push “on/off” power button
• Battery level indicator
• Useable charge–Green LED
• Recharge needed–Red LED
• Push “on/off” mute button
(Blinking LED)
• Powerful transmission
output
• Dual internal microphones
• Auxiliary input jack:
(Switchable to Mic or Line
Level)
• Channel “A” or “B” Selector
switch
• Volume Control
• Single “AA” rechargeable
NiMH battery
• External contacts for drop-
in charger
IRT-30 crescent transmitter

7
IRH-35 handheld transmitter
The Handheld Microphone Transmitter (IRH-35) is
most applicable for student use or direct presenta-
tion. It has an “on/off” switch and a battery level
indicator LED; Green=useable charge, Red=low
battery. The transmitter has 10 emitting diodes:
8 around the bottom of the handle, and 2 toward
the top of the handle around the bottom of the
handle. The metal housing provides low handling
noise and insures durable longevity.
features
• Condenser microphone
element
• Power “on/off” switch
• Battery level indicator—
LED
• Channel “A” or “B” select-
able
• 10 high-power emitting
diodes
• Diodes at top and bottom
of handle for increased
Coverage (2 Top aimed
out, 6 Bottom 360°,
2 Bottom aimed down)
• 360º IR radiation for as-
sured connectivity
• Two “AA”, Duracell, re-
chargeable NiMH batteries

owner’s manual
8
VoiceLink I
drop-in battery chargers
BRC-50
The BRC-50 charger recharges the Crescent (IRT-
30), Body-Pack transmitter (IRB-30), and Hand-
held (IRH-30). You merely place the Crescent or
Body-Pack in their respective slot. Connection will
be made and charging will commence. Charger
will automatically control the rate and maintain the
charge.
The battery chargers are specifically designed to recharge NiMH batteries at an optimum
rate for maximum operating capacity and extended service life. The chargers feature a recy-
cle function, which is used to restore the battery charge capacity and extend their service life.
BRC-55
This stylish desktop drop-in charging station
makes it convenient and easy to recharge both
Sapphire Pendant and Handheld Microphones.
Charge one IRH-35 handheld transmitter and up to
two IRT-55 Sapphire transmitters simultaneously.
Charging indicator lights illuminate Red when
charging, and Green when fully charged. The “TL”
logo illuminates Blue when plugged in.

9
location and Installation of receiver
Since the VoiceLink I is a supplement to an existing
power amplifier system, you will want to locate
the receiver near the power amplifier to minimize
audio cable length from receiver to sound system.
Connect the output of the receiver to the line input
of the sound system.
• Unbalanced: Use a shielded cable with
RCA connectors
• Balanced: Use two conductor shielded cable.
Connect to three pin phoenix connector
• Pin 1 – Ground (Chassis)
• Pin 2 – Positive (Hot)
• Pin 3 – Negative
Plug power supply into AC outlet.
Plug power cable into receiver.
installation of system
Location of receiver is primarily determined by user accessibility, location of sound system
and availability of an electrical outlet. Location of the sensor and routing of the sensor cable
is a more critical issue.
mounting
Desk Top Location
• Install soft vinyl pads on
bottom of receiver
• Locate for convenient use
Shelf or Wall Mount
• Attach the mounting
flanges using round holes
and small plastic rivets.
• Caution: Assure rivets are
aligned and seated before
pushing rivet into hole
• With flanges attached, hold
receiver in place.
• Mark mounting holes
• Drill a 3/32" pilot hole
for screwing directly into
a solid surface using the
mounting screws.
• Drill a 5/32" hole and
insert a plastic anchor in
drywall or concrete wall.

owner’s manual
10
VoiceLink I
corner mounting below ceiling
corner mounting on ceiling T-bar
•Locate sensor near ceiling, within 12 inches is
preferred
•Screw bracket into corner
•Slide sensor onto bracket with LED oriented
either at 12 o'clock or 6 o'clock (top or bot-
tom) and sensor cable oriented at 3 o'clock or
9 o'clock.
•Connect sensor cable and route in tidy manner
to receiver
•Plug into either sensor input on receiver
•Lift up corner ceiling tile
•Set bracket on corner of T-bar
•Lower ceiling tile to secure bracket in place
•Slide sensor onto bracket with LED oriented
either at 12 o'clock or 6 o'clock (top or bot-
tom) and sensor cable oriented at 3 o'clock or
9 o'clock
•Connect sensor cable and route in tidy manner
to receiver
•Plug into either sensor input on receiver
A second sensor is included standard with the system for
added wireless transmission coverage. See illustration
next page.
note
T-Bar
Ceiling Tile
T-Bar
Ceiling Tile
installation of two IWS-35 corner sensors
The corner sensor is a critical component of the system for reliable operation of the wireless
transmitter. It receives the infrared signal and sends it to the receiver/amplifier. Its location
is very important. Corner installation provides the best performance. The receiving pattern
of the sensor is like an elliptical shape cone about 90º horizontal by 60° vertical. The reliable
operating distance from transmitter to sensor is about 35 feet.

11
Two sensors may be placed
at opposite (diagonal)
corners for additional
coverage.

owner’s manual
4
VoiceLink I
12
installation of ICS-55 ceiling sensor
The ideal location for the ceiling sensor is in the center of the ceiling. This will provide a
clear signal path for the IR transmission from the transmitter to the dome sensor without
obstruction. In addition, you will have 360º coverage and will minimize the transmission
distance for more reliable performance.
Attaching the infrared ceiling sensor
INSTALLING THE INFRARED SENSOR
Installation 1 ------ Attach to T-bar Rail
Installation 2 ------ Attach to wood surface Installation 3 ------ Attach to concrete surface
Step1
ICS-52
ICS-52
ICS-52
Step1
Step2
Step1
Step4
Step5
Step2
Step3
Step3
Step4
Step2
Step3
Step4

713
system operation
•Turn the VoiceLink I “ON” , Red LED will light
•Confirm power to sensor, Yellow LED on edge of
sensor
•Set volume of Mic control to mid scale
(12 o’clock)
•Using a Transmitter (Handheld, Crescent, Pen-
dant, or Body-Pack with microphone) Select
channel “A”
• Crescent: “A–B” switch on back panel
• Sapphire: “A–B” switch, remove batery cover
on back, under battery.
• Handheld: Unscrew barrel and remove.
Note “A–B” switch on side of battery
holder.
•Turn volume control on transmitter to minimum
level (Crescent, Sapphire)
•Switch transmitter “on”
•Observe power LED (Green) - use fully charged
batteries only
•Observe signal presence LED (Orange) on re-
ceiver adjacent to “Mic” volume control
•Stand under or in front of a speaker
•Slowly adjust “Mic” volume on transmitter while
talking into microphone
•Adjust to desired listening level.
CAUTION: Beware of feedback
•Walk around the room while talking into micro-
phone to confirm good connectivity
Upon completion of performance test,
the installation is complete.
operation of VoiceLink I system
Now that the system is installed and connected, we are ready to turn the system “ON” and
test its performance. The testing will be done using an IR transmitter (Crescent, Pendant,
Handheld or Body-Pack) to confirm good connectivity and quality audio.

owner’s manual
14
VoiceLink I
projector system setup
•With the corner sensor installed, connect it to
VoiceLink I
•Locate VoiceLink I near projector and connect to
AC power
•Connect an audio cable with 3.5mm connectors
from projector audio output to VoiceLink I Aux
In (front panel)
•Connect VoiceLink I output to power amplifier
• Shielded audio cable with RCA phono from
unbalanced output to amplifier input
• Shielded two-conductor cable connected
per balanced output per page 11
•Turn "on" VoiceLink I, Power Amplifier, and
Video Projector
•Set “AUX IN” control on VoiceLink I to 2 o’clock
position
•Set power amplifier volume (if applicable) mid
scale
•With microphone turned “on”, speak and adjust
microphone volume using “MIC” volume control
on VoiceLink I
•With an Auxiliary program turned “on” and
plugged into the projector, adjust the auxiliary
volume with the remote control
•Some adjusting of the VoiceLink I (AUX) and
amplifier volume may be required
•Once auxiliary volume is optimized, readjust
microphone volume using “MIC” volume control
•System is now ready to use with remote control
of AUX inputs and consistent Mic volume
(Mic volume does not change with remote
volume control)
Microphone volume is
not affected by the remote
control of the auxiliary
inputs.
note
How to Interface VoiceLink I with a Video Projector and
incorporate the Projector’s Remote Control
AUDIO OUT
REMOTE
SENSOR
Infrared Transmitter
”Crescent”
Speaker
Projector
Remote
Control
POWER
INFRARED MIC
VoiceLink I
IR Sensor
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