Williams Sound IR T01 User manual

MAN 212C
IR T01
Small Area Infrared Transmitter
USER Manual

IR T01 Small Area Infrared Transmitter
Important Safety Instructions
Please read and keep these instructions.
WARNING! To reduce the risk of re or electric shock, do not expose the system to rain
or moisture. Do not use this apparatus near water. The system should not be exposed
to dripping or splashing, and objects lled with liquids such as beverages should not
be placed on the transmitter or receivers. Clean only with a dry cloth.
Servicing or attempting to service this device will void the warranty
• Refer servicing to qualied personnel. Servicing is required when the system has
been damaged in any way: if liquid has been spilled or objects have fallen into the
unit, if the unit has been exposed to moisture, if the unit does not operate normally,
or if the unit has been dropped.
• Do not block any ventilation openings. Install in accordance with manufacturer’s
instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or
other apparatus that produces heat.
• Use only attachments/accessories specied by the manufacturer.
• Unplug the transmitter during lightning storms or when unused for long periods of time.
• Be advised that dierent operating voltages require the use of dierent
attachment plugs. Check the voltage in your area and use the correct type.
• Use only the power supply provided by Williams Sound. Other power supplies
may have similar specications, but may not be equivalent in emissions ratings,
in-rush current, etc. Use of an unapproved power supply may leave the device
partially or completely inoperable, and will void the warranty.
• Protect the power cord from being walked on or pinched, particularly at plugs,
receptacles, and near the power jack on the transmitter.
• This apparatus must be grounded.
• The AC Power plug or an appliance coupler is used as the disconnect device, so
the disconnect device should remain readily operable.
For Customers in The United States
This equipment has been tested and found to comply with the limits for Class B digital
device, pursuant to part 15 of the FCC rules.
For Customers in Canada
This Class B digital device meets all requirements of the Canadian Interference-causing
Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les
exigencies du Règlement sur le matériel brouilleur du Canada.

IR T01 Small Area Loop Infrared Transmitter
Recycling Instructions
Please help Williams Sound protect the environment. Please take the time to
dispose of your equipment properly.
Product Recycling for Customers in the European Union:
Please do NOT dispose of your Williams Sound equipment in the household
trash. Take the equipment to a electronics recycling center, or return the
product to the factory for proper disposal.
System Overview
The IR T01 is a two-channel infrared transmitter combining infrared modulator and
emitter technology into a single mountable enclosure—which reduces operating costs,
eliminates the need for rack space and eases set-up.
The IR T01 is ideal for high quality audio programs such as music, television audio, and
audio description. The IR T01 will accept any line level stereo audio input. Infrared
receivers detect the transmission and convert the light signals back into audio signals.
The IR T01 operating frequencies (2.3/2.8 MHz) minimize high eciency lighting
interference.
No FCC license or radio approval is required with this equipment. It can be used
anywhere in the world.
NOTE: This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation
of this equipment in a residential area may cause interference, in which case the user
will be required to correct the interference at his own expense.
NOTE: A PLASMA MONITOR OR TELEVISION CAN DEGRADE THE AUDIO QUALITY OF
THE IR T01 TRANSMITTER. FOR BEST PERFORMANCE, THE TRANSMITTER SHOULD
BE POSITIONED AS FAR AWAY AS POSSIBLE FROM ANY PLASMA MONITOR,
TELEVISION OR OTHER INTERFERING DEVICES.
Installation Procedures
Determine Coverage Area
When using the IR T01 transmitter with the RX22-4 receiver, the system coverage area
will exceed 1000 sq. ft. (93 sq. m.). Figure 1 illustrates typical coverage pattern for the
IR T01. This can be aected by direct/indirect sunlight, reections on walls, objects
in the room and room construction. The patterns illustrated are the direct radiation
pattern. Most objects block infrared light, so the transmitter cannot be concealed
behind walls, glass, curtains, etc. The infrared radiation does not drop to zero outside
the illustrated patterns; it decreases. It still may be useable at a greater distance,
depending on the receiver sensitivity and the reective characteristics of the room.
Important: Remember to point the transmitter towards the listening audience. The front
is the surface with the Williams Sound logo as shown on the cover of this manual.
See Figure 1.

IR T01 Small Area Infrared Transmitter
Figure 1 - IR T01 Coverage Pattern
Connections & Indicators
Figure 2 - IR T01 Rear View
Power In
Power Indicator
(Green)
3.5mm Audio Line Input
Audio Indicator (Ch.1)
(Yellow)
Audio Indicator (Ch.2)
(Yellow)
5VDC 0.2A
IR T01 INFRARED TRANSMITTER 2.3 MHz
LINE IN
2.8 MHz
Connecting Power
1. Snap in the correct adapter for your region into the TFP 055 power supply.
2. Plug the USB end of the “USB to micro USB cord” into the power supply.
3. Plug the micro USB end of the “USB to micro USB cable” into the IR T01.
4. Plug the power supply into an AC outlet.
Alternatively, you may plug the USB end of the cord into a direct USB power source,
such as the USB port on a television, etc. to power the IR T01.
On power up, the IR T01 performs a self-test to detect damage due to shipping,
handling, tampering or incorrect operation. If any failure is present, the green power
LED will blink rapidly. If this occurs, contact Williams Sound Customer Service.
This system is designed for class 2, low-voltage wiring. Always follow local electrical
codes when using low-voltage wiring.

IR T01 Small Area Loop Infrared Transmitter
Audio Indicators (Ch. 1,2)
The audio indicator LEDs (see Figure 2) will light up yellow when an adequate level
of input audio is sensed on that channel. If audio is present, but not high enough
to produce acceptable audio quality, the LED will not light. Once an adequate level
of audio is fed to the unit, the LED will stay on. If the audio level falls below the
acceptable threshold, the LED will go out, and the sleep timer will start to turn o that
channel after approximately 12 minutes (See “Sleep Mode” below).
Sleep Mode
The IR T01 is equipped with a sleep mode/power save feature. If a minimum
acceptable audio level is not present on a channel (both channels are independent),
a timer begins, and after approximately 12 minutes that channel will automatically go
into sleep/power save mode. The timer begins when the yellow channel LED goes out.
Both channels are independent; one can be broadcasting while the other goes to sleep
(shuts o infrared output).
This mode decreases power consumption by 80 percent. Audio will automatically begin
broadcasting again when the audio input threshold is triggered.
Connecting the Audio Source
The IR T01 detects the presence of audio on the Audio Line Input jack, lights up the
LED for the channel(s) where an adequate level of incomiing audio is present, and
transmits on either/both channels.
The IR T01 will accept line level mono or stereo audio inputs. See gure 3 for audio
input cable conguration.
The IR T01 uses a limiter circuit to control the gain of line level audio for optimum
transmission. The yellow Audio Indicator LED should light up when when an adequate
level of input audio is present. If the audio indicators do not light up and stay on, the
audio level is too low. Adjust the gain of the audio source until they light up and stay on.
Figure 3 - 3.5mm plug/input jack wiring
Tip: Ch. A (2.3 MHz)
Ring: Ch. B (2.8 MHz)
Sleeve: GND
Optional Receiver(s)
WIR RX22-4 4-Channel, Body Pack Receiver (requires earphones, headphones, or neckloop)
WIR RX18 2-Channel, Under-the-Chin Receiver

IR T01 Small Area Infrared Transmitter
Troubleshooting
The IR T01 is equipped with a series of self-tests. If the power indicator on the unit is
blinking rapidly, an error has occurs which requires returning the unit for service.
The IR T01 “Power Indicator” is not lit:
• Make sure the power supply is plugged into the transmitter and any remote power switch is on.
• Make sure the electrical outlet is on.
• Make sure the 5 VDC USB power supply is working.
The IR T01’s Ch1 or Ch2 “Audio Indicator” does not light:
• Make sure the IR T01 is plugged in.
• Make sure the audio input is connected properly. Refer to gure 3.
• Make sure an active and adequate level of audio signal is being sent to the IR T01 transmitter.
No Sound through Receivers:
• Check to make sure the receiver is operating on the same frequency as the transmitter.
• If some of the receivers work but others don’t, check for bad batteries or earphones.
• If none of the receivers work, check to see if the power and audio input cables are
connected to the transmitter. Verify that the “Power Indicator” LED is on, and Ch1 or
Ch2 “audio indicator” LED(s) are on.
• Make certain the transmitter is not covered by objects which would block infrared light.
Sound Through the Receivers is Weak and Noisy:
• Make certain the user is facing towards the transmitter. Move the user closer to the
transmitter, or reposition the transmitter closer to the user as appropriate.
• Try adjusting the audio input level on the source.
• Reposition the transmitter beam, making certain the front (curved) face of the
transmitter is pointed directly towards the listener.
Buzzing or Humming Noise in Sound System:
• Check for ground loops or noise on the input signal.
If these instructions do not address your problem or the issue persists, please call your
authorized Williams Sound dealer or representative.
Mounting Options
• STD 008 – TV Top Shelf (optional)
• BKT 024 - Universal wall / ceiling mount (optional)
• The IR T01 can be mounted on any camera tripod stands with a 1/4” - 20 threaded
connector

IR T01 Small Area Loop Infrared Transmitter
Infrared Transmitter Specications
Model IR T01
Dimensions: Width: 5.65”(14.4 cm), Depth: 3.65”(9.3 cm), Height:
1.15”(2.9 cm)
Weight: 8.3 oz (235 g)
Color: Black
Power Supply: TFP 055 – 100-240VAC 50/60Hz Input, 5VDC, 0.2A USB
Output, Universal Supply with international adapters
Other USB Power Supply (must be at least 5VDC, 0.2A)
Power Cable: USB to micro USB cable
DC Power Input: Micro USB connector, 5VDC, 0.2A
Power Indicator: Green LED
Sleep/Power Save Mode: Shuts o carrier when no audio present for 12 minutes
Modulation: FM Wideband, ±50 kHz deviation max, 50 μS pre-
emphasis
Carrier Frequencies: 2.3MHz (Ch 1) and 2.8MHz (Ch 2)
Default at power on = carriers o. Carriers are
automatically enabled upon presence of audio.
Coverage Area: 1,000 sq. ft (93 sq. m.)
Audio Inputs: 3.5mm stereo line level input jack, Ch 1 connected to tip,
Ch 2 connected to ring, GND connected to sleeve
Audio Indicators: One Yellow LED per channel, lights up and stays on
steady with minimum audio level.
Signal-to-Noise Ratio: 70 dB at onset of limiting
Frequency Response: 100 - 12,000 Hz
Operating Requirements: 32°-122°F (0-50°C)
Mounting Kit: Optional: STD 008 TV Top Shelf Mounting Kit
Optional: BKT 024 Omnidirectional mount for wall or
ceiling mounting
Compatible Receivers: WIR RX22-4, WIR RX18
Warranty: 2 years
Approvals/Regulatory
Compliance:
CE, RCM, FCC, Industry Canada, PSE, CUL, WEEE,
RoHS, CB Scheme
NOTE: Specications are subject to change without notice.
Visit our website for the latest specications and publications: www.williamssound.com

©2017 Williams Sound • All Rights Reserved
10300 Valley View Rd • Eden Prairie, MN 55344
800-328-6190 / 952-943-2252 • FAX: [phone]
www.williamssound.com
MAN 212C
Limited Warranty
Williams Sound products are engineered, designed, and manufactured under
carefully controlled conditions to provide many years of reliable service. Williams
Sound warrants the IR T01 infrared listening system against defects in materials
and workmanship for two (2) years. During the rst two years from the purchase
date, we will promptly repair or replace the IR T01 infrared listening system.
Microphones, earphones, headphones, batteries, chargers, cables, carry cases,
and all other accessory products carry a 90-day warranty. WILLIAMS SOUND HAS
NO CONTROL OVER THE CONDITIONS UNDER WHICH THIS PRODUCT IS USED.
WILLIAMS SOUND, THEREFORE, DISCLAIMS ALL WARRANTIES NOT SET FORTH
ABOVE, BOTH EXPRESS AND IMPLIED, WITH RESPECT TO THE IR T01 INFRARED
LISTENING SYSTEM, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. WILLIAMS
SOUND SHALL NOT BE LIABLE TO ANY PERSON OR ENTITY FOR ANY MEDICAL
EXPENSES OR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES CAUSED
BY ANY USE, DEFECT, FAILURE OR MALFUNCTIONING OF THE PRODUCT, WHETHER
A CLAIM FOR SUCH DAMAGES IS BASED UPON WARRANTY, CONTRACT, TORT OR
OTHERWISE, THE SOLE REMEDY FOR ANY DEFECT, FAILURE OR MALFUNCTION
OF THE PRODUCTS REPLACEMENT OF THE PRODUCT. NO PERSON HAS ANY
AUTHORITY TO BIND WILLIAMS SOUND TO ANY REPRESENTATION OR WARRANTY
WITH RESPECT TO THE IR T01 INFRARED LISTENING SYSTEM. UNAUTHORIZED
REPAIRS OR MODIFICATIONS WILL VOID THE WARRANTY.
The exclusions and limitations set out above are not intended to, and should not be
construed so as to contravene mandatory provisions of applicable law. If any part or
term of this Disclaimer of Warranty is held to be illegal, unenforceable, or in conict
with applicable law by a court of competent jurisdiction, the validity of the remaining
portions of this Disclaimer of Warranty shall not be aected, and all rights and
obligations shall be construed and enforced as if this Limited Warranty did not contain
the particular part or term held to be invalid.
If you experience diculty with your system, call toll-free for customer assistance:
1-800-843-3544 (U.S.A.) or [phone] (outside the U.S.A.)
If it is necessary to return the system for service, your Customer Service Representative
will give you a Return Authorization Number (RA) and shipping instructions.
Pack the system carefully and send it to:
Williams Sound
Attn: Repair Dept.
10300 Valley View Road
Eden Prairie, MN 55344 USA
Your warranty becomes eective the date you purchase your system. If your sales
receipt is not available, the date code on the product will determine your warranty
status.