Williams Sound Hearing Helper T800 Guide

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Williams Sound T800 Hearing Helper Base Station Transmitter - Europe

Hearing Helper™
Wireless FM Listening System
MAN 143C
Manual and User Guide
Transmitter Model T800
Optional Receiver Model R863

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Hearing Helper™Wireless FM Listening System
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Hearing Helper™ T800 Transmitter
Manual and User Guide
Contents
System Overview ...................................................................................... 3
T800 Transmitter Instructions ................................................................. 4-6
Features and Controls........................................................................ 4
Antenna Connection .......................................................................... 4
Power Connection ............................................................................. 4
Selecting a Frequency ....................................................................... 5
Connecting an Audio Source ............................................................. 5
Adjusting the Audio Source............................................................. 5-6
Receiver Safety Information.................................................................... 7-8
R863 Receiver Instructions .................................................................. 9-13
Features & Controls ........................................................................... 9
R863 Belt Clip Instructions............................................................... 11
Receiver Battery Information ....................................................... 12-13
Receiver Charger Information.................................................................. 14
Troubleshooting Guide ....................................................................... 15-16
Warranty ............................................................................................ 17-18
System Specications............................................................................. 19

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System Overview
Thank you for purchasing the Hearing Helper™T800 transmitter from Williams
Sound. This wide-band FM transmitter operates on the 863 MHz bandwidth
and connects directly to your facility’s sound system; alternatively, it can used
with a microphone as a stand-alone system. The T800 is designed for use
with the optional R863 FM receiver to provide hearing assistance or language
interpretation to a listening audience.
The T800 transmitter operates much like an FM radio station. First, the
transmitter receives the audio from the facility’s mic or sound system,
then the transmitter broadcasts the audio as an FM signal to the listening
audience. Listeners use the R863 receivers equipped with headsets or
earphones to pick up the FM broadcast up to 400 feet away.
To avoid difculties, please read through these instructions as you begin
to use the system. Then save the manual for questions that arise as you
continue to use your system. If at any time you are having problems with this
product, please contact Williams Sound for assistance: [phone].
LOUDSPEAKER
LINE-LEVEL OUTPUT
LINE-LEVEL INPUT
SOUND SYSTEM
AMPLIFIER
MICROPHONES
T800 TRANSMITTER
R863 WIDE-BAND RECEIVERS
WITH EARPHONES A244
Fig. 1: Overall System Diagram

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Setting up the T800
Fig. 2: Features & Controls
A240
1. HEADPHONE JACK
2. HEADPHONE VOLUME CONTROL
3. FREQUENCY DISPLAY (LCD)
4. UP BUTTON
5. DOWN BUTTON
6. SET BUTTON
7. MENU CONTROL
8. POWER ON/OFF CONTROL
① ③② ④ ⑤ ⑥ ⑦ ⑧
A240
9. ANTENNA CONNECTOR
10. RF POWER OUTPUT SWITCH
11. AUDIO INPUT JACK, RCA TYPE
(LINE-LEVEL, UNBALANCED)
WITH GAIN CONTROL
⑨ ⑪⑩ ⑫ ⑬ ⑭
12. MIC INPUT JACK, COMBO
3-PIN XLR OR 1/4” TRS
(BALANCED/UNBALANCED)
WITH GAIN CONTROL
13. DC POWER IN JACK
14. AC POWER IN JACK
Step 1: Select Location
Position the T800 transmitter near the audio source (i.e. sound system,
mixer) from which it will receive audio.
Step 2: Install the Antenna
Gently thread the antenna onto the connector recessed on the back of
the transmitter. To use a remote antenna, contact your dealer or Williams
Sound.

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Step 3: Connect the Audio Source
On the back of the T800, two audio input jacks are available: an RCA-type
jack for line-level, unbalanced audio sources; and a combo XLR (3-pin) and
1/4” TRS jack for connecting an unbalanced/balanced audio source. Note:
Microphone must be dynamic (no phantom power supplied). If both inputs
are used simultaneously, audio will be mixed. Connect the desired audio
source to the T800 transmitter.
Step 4: Connect the Power
Locate the power supply cord equipped with the 3-pin connector, then plug
the connector into the “AC Power In” jack located in the back of the T800.
Plug the power supply into the AC outlet. Alternatively, the T800 can be
powered by a 12VDC power supply for portable applications (not included).
Note: Only one power source should be used at one time.
Press the “Power ON/OFF” control on the front of the unit. On power up,
“Williams Sound T800” will appear briey while the system initializes. The
system will then display the current operating “CHANNEL” (1-16).
Step 5: Select the Frequency
The T800 operates on the 863-864 MHz bandwidth with sixteen selectable
preset channels. Channels 1-3 are standard and coincide with channels
1-3 on the R863 (optional) receiver:
CH 1 = 863.250 MHz, CH 2 = 863.750 MHz, CH 3 = 864.750 MHz
Additional operating channels (4-16) available are:
CH 4 = 863.050 MHz, CH 5 = 863.400 MHz, CH 6 = 863.550 MHz
CH 7 = 864.000 MHz, CH 8 = 864.150 MHz, CH 9 = 864.300 MHz
CH 10 = 864.450 MHz, CH 11 = 864.600 MHz, CH 12 = 864.950 MHz
CH 13 = 863.150 MHz, CH 14 = 863.650 MHz, CH 15 = 863.900 MHz,
CH 16 = 864.850 MHz
The T800 is set at the factory to Channel 1 (863.250 MHz). To change the
channel, press and hold the “Set” button for 3 seconds (cursor will ash),
then press the “+” Up or “-” Down button until the desired channel (1-16)
is displayed. No further action is required, the selection will be saved into
memory after 3 seconds.
To view the current operating frequency (i.e. “863.250 MHz”) on the T800,
press the “MENU” button once.

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Step 6: Adjust the audio Level
Locate the “Gain Control” on the rear of the T800. With the audio
source playing, rotate the “Gain Control” clockwise “+” to increase or
counterclockwise “-” to decrease gain. Monitor the audio indicator “bars”
on the display as you make your adjustments. As a general guideline:
No audio indicator bars present = Audio source is TOO LOW.
Some audio indicator bars present = Audio source is ACCEPTABLE
“Limiting” message is displayed = Audio source is TOO HIGH.
Ensure the audience is receiving the highest quality audio: listen
to the audio through the headphone jack on the front of the
T800 (FIG. 2).
Step 7: Listen with an FM Receiver
IMPORTANT: The FM receiver being used with the T800
transmitter will need to be on the same frequency as the
transmitter!
Install the receiver batteries, plug in the earphone, turn on the receiver
and walk around the listening area. The signal should be clear and quite
loud when the volume is turned up. See page 9 for detailed operating
instructions on the R863 receiver.

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Safety Information
HEARING SAFETY:
CAUTION!
The R863 receiver is designed to amplify sounds to a high volume level
which could potentially cause hearing damage if used improperly.
To protect your hearing and the hearing of others:
1. Make sure the volume is turned down on the receiver before putting
on the earphone or headphone. Then adjust the volume to a
comfortable level.
2. Set the volume level at the minimum setting that you need to hear.
3. If you experience feedback (a squealing or howling sound), reduce the
volume setting and move away from the microphone being used with
the T800 transmitter.
4. Do not allow children or other unauthorized persons access to the
receiver.
BATTERY SAFETY AND DISPOSAL:
CAUTION!
The R863 receiver may be supplied with Alkaline batteries. Do not attempt
to recharge Alkaline batteries, which may explode, release dangerous
chemicals, cause burns, or other serious harm to the user or product. See
page 13 for additional battery information.
PACEMAKER SAFETY:
CAUTION!
1. Before using the R863 receiver with a pacemaker or other medical
device, consult your physician or the manufacturer of your pacemaker
or other medical device.
2. If you have a pacemaker or other medical device, make sure that
you are using this product in accordance with safety guidelines
established by your physician or the pacemaker manufacturer.

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Recycling Instructions
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. Please take the equipment to an electronics
recycling center; OR, return the product to the factory for proper
disposal.
Battery Recycling for Customers in the European Union:
Please do NOT dispose of used batteries in the household trash.
Please take the batteries to a retail or community collection point
for recycling.

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Using the Optional R863 Receiver
FIG. 3: R863 Receiver Views
A217
O
ON/OFF/
CHANNEL
SELECTOR
SWITCH
VOLUME
CONTROL
"ON"
INDICATOR
EARPHONE/
HEADPHONE
JACK
R863 Top
R863 Front

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Using The R863 Receiver, cont.
Note: Rechargeable batteries are shipped in a discharged state and
must be charged overnight before using.
1. Make sure there are two alkaline or rechargeable AA batteries in the
Receiver. If batteries are not installed, see Battery Information on page
12-13.
2. Plug the earphone or headphone into the “ ” Jack on top of the
Receiver.
3. Put on the earphone or place the headphones over your ears.
4. Turn the unit on: turn the On/Off/Channel switch to position “1” or “2”
or “3.” The Power “ON” LED indicator should illuminate.
5. Select a desired operating frequency. To operate on 863.25 MHz, turn
the On/Off/Channel switch to position “1”; to operate on 863.75 MHz,
turn to position “2”; to operate on 864.75 MHz, turn to position “3.”
Important: Make sure the receiver is operating on the same
frequency as the transmitter! The receiver’s channel switch (1-2-3
position) should match the transmitter’s channel selection.
6. Adjust the receiver volume control to a comfortable listening level.
You should be able to hear the audio being provided to the T800
transmitter.
The receiver can be placed in a pocket, or clipped onto a belt,
harness, or waistband.
IMPORTANT: When the R863 receiver is not being used, remember
to turn the unit OFF by turning the On/Off/Channel switch to the
“ ” power icon position. The Power “ON” LED indicator should
not be lit.

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Belt Clip Installation/Removal for the R863 Receiver
To Install:
Position the belt clip on the rear of the R863 receiver as shown in FIG. 4A.
Turn the belt clip 180º left or right as shown in FIG. 4B. The belt clip is now
installed and ready for use.
To Remove:
Turn the belt clip 180º so the open end of the clip points to the top of the
unit as shown in FIG. 4A. Gently pull the belt clip away from the unit to
remove.
A245
Fig. 4A Fig. 4B

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R863 Receiver Battery Information
Installation
Open the battery compartment by lifting the tab on the back of the receiver
with your nger. To remove depleted batteries, pull up on the fabric strip.
IMPORTANT: If Alkaline (non-rechargeable) batteries are being
installed, slide the battery selection switch in the battery
compartment to the “Alkaline” position. See FIG. 5 below. If
installing NiMH (or rechargeable) batteries, slide the battery
selection switch to the “NiMH” position.
Press the batteries into place over the fabric strip. Be sure to observe
proper polarity (+/-). Damage due to improper battery installation may void
the warranty on the product. Close the battery door. LED will ash when the
batteries are getting low; continue to use until the sound becomes weak or
distorted, or the unit quits operating, then replace or recharge batteries.
BATTERY
COMPARTMENT
BATTERY SELECTION
SWITCH
A241
NOTE PROPER
POLARITY
Fig. 5: Battery Installation

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Non-rechargeable Batteries
In normal use, two AA 1.5 V alkaline batteries (BAT 001) will last
approximately 40 hours in the R863 receiver. If the sound becomes weak or
distorted, replace the batteries. Do not leave dead batteries in the receiver.
Battery corrosion is not covered by the Williams Sound warranty.
Rechargeable Batteries
The R863 receiver can use rechargeable AA batteries (BAT 026). On an
overnight charge, these NiMH batteries are designed to operate for 30
hours in the R863 receiver.
NOTE: The battery installed in the receiver may be recharged in the
receiver only if it is a NiMH battery, and only if a Williams Sound
CHG 3512, CHG 3512 PRO, or CHG 3502 Multi-Charger is used.
Damage from improper charging is not covered by the Williams
Sound warranty.
!! IMPORTANT WARNINGS !!
DO NOT ATTEMPT TO RECHARGE ZINC CARBON (“HEAVY DUTY”),
ALKALINE, OR LITHIUM BATTERIES!
DO NOT ATTEMPT TO RECHARGE SINGLE-USE BATTERIES!
These batteries may heat up and explode, causing possible
injury and damage to the equipment. Avoid shorting the plus
and minus battery terminals together with metal objects. Battery
damage and burns can result! Use only Williams Sound supplied
chargers and rechargeable batteries!
NOTE: Rechargeable batteries are shipped in a discharged condition.
They must be charged for a complete charge cycle before the
rst use. Rechargeable batteries may need to be replaced after
1-2 years of use.

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Optional Battery Chargers for the R863 Receiver
Fig: 6A: CHG 3512 / 3512 PRO Multi-Charger
Fig: 7A: CHG 3502 Dual-Bay Charger
RECEIVER OR
TRANSMITTER
CHARGING
INDICATOR
A124
CHG 3512
REAR VIEW
DC POWER
A125
RECEIVER OR
TRANSMITTER
CHARGING
INDICATOR
AC POWER
CONNECTION
CHG 3502 REAR VIEW

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Trouble Shooting Guide
Read through the manual and user guide carefully to verify proper
setup and installation of your system.
Transmitter frequency display (LCD) not lit.
• Make sure the AC power adapter is plugged into the transmitter.
• Make sure the electrical outlet is on.
No sound through receivers.
• If some of the receivers work, but others don’t, check for bad batteries or
earphones on the receivers that aren’t working.
• Verify that the receiver frequency matches the transmitter frequency. See
“Select the Frequency” section.
• If none of the receivers work, check to see if the power is connected to
the transmitter and the frequency display on the front of the transmitter is
illuminated.
• Check to see if the transmitter is connected properly to the sound
system.
• Turn the “Gain Control” on the back of the T800 transmitter clockwise to
increase the audio level.
• If you are not using an input signal from a sound system, make sure the
Williams Sound microphone is plugged into the “Mic Input” jack on the
rear of the T800 transmitter.
• Make sure the antenna is installed and connected properly.
Insufcient range, good reception near transmitter, poor at a distance
• Check to see if the antenna was installed correctly. If not, correct or
replace the antenna. The signal should be clearly audible at 30 m (100 ft.)
line of site of the transmitter.
• Check to make sure no other transmitters (or other devices) are
transmitting on the same frequency (channel).

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Sound through receivers is loud, but distorted. Noise (room noise or elec-
tronic noise) seems to grow after talking stops. “Limiting” appears on LCD
display.
• Turn the “Gain Control” on the back of the T800 counterclockwise to
decrease the audio level.
Sound through the receivers is weak and noisy.
• Turn the “Gain Control” on the back of the T800 clockwise to increase
the input signal strength.
• Increase the input signal level from the sound system.
• Batteries may be depleted. Replace the receivers’ batteries.
Buzzing or humming noise in sound system.
• There is nothing wrong with the T800 transmitter. One or more pieces
of equipment in the sound system are being disturbed by RF (Radio
Frequency) signals produced by the T800. The most likely suspects are
your amplier, mixer, or tape deck. The RF gets into the other equipment
primarily through the power cord, speaker wires, or unshielded inputs, all
of which can act as antennas. Try the following steps:
• Move the transmitter away from the other sound equipment.
• Make sensitive equipment more immune to RFI/EMI. The manufacturers
of your audio equipment may offer application notes for this purpose.
Williams Sound offers a document giving suggestions for improving RF
immunity in existing audio equipment. (Technical Bulletin: Buzz Or Hum In
The Sound System, FRM 531) Unless you have the necessary technical
skills, this is best left to a qualied electronics repair technician.

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Hearing Helper™ Specications
T800 Transmitter
Dimensions: 21.8 cm (8.6") W x 21.8 cm (8.6") D x 4.6 cm (1.8") H
Weight: 1.32 kg (2.9 lbs)
Color: Black with white legends
Power: AC: 100 to 240 VAC, 50-60 Hz, 400 mA, power inlet IEC C14 DC: 12 to 13
VDC, 800 mA, 2.1 mm DC input jack
Power Switch: Push ON - push OFF switch with red light
Temperature Range: Operating: 0 C to 40 C (+32 F to 104 F) Storage:-20 C to 70 C (-4 F to +158 F)
Operating Frequencies: Selectable: Ch 1= 863.250 MHz, Ch 2 = 863.750 MHz, Ch 3 = 864.750 MHz,
13 other frequencies available (see manual)
RF Output: 5 to 10 dBm (full power switch)
RF Switch: Low/ Full power switch on rear panel
LCD Display: Backlit, Ch #, frequency, user name, audio level VU (indicated by 11 segments
total)
Menu Push Buttons: Menu, +Ch select, -Ch select, SET
Headphone Output: Mono, 1/4" tip barrel jack, 0.35mW power into 33 ohms, level adjust on front
panel
Stability: +/- .05 MHz (0 C to 40 C)
FM Deviation: 45 kHz (line input, L+R, 1 kHz, 0.5 Vrms)
Pre-Emphasis: 50 µsec
Nominal Range: Up to122 meters (400 ft.) at RF switch full power with Williams Sound R863
receiver
Frequency Response: Line input: 25 to 10.0 kHz +- 3 dB
Microphone input: 110 to 8.5 kHz +/- 3 dB. Dynamic mic only
Signal/Noise Ratio (1 KHz): Line input: > 50 dB Microphone input: > 40 dB
%THD + noise (1 KHz): Line input: < 0.4% Microphone input: < 0.5%
Audio Processing: 2:1 compression (line or microphone input)
Audio Input: Line input: mono, RCA jack x 2 (labeled left and right) Microphone input:
Balanced/ unbalanced, combo XLR (3 pin) or 1/4" TRS jack.
Audio Levels: (at FM deviation) Line input: 0.5 Vrms (-6 dBV), rotary gain adjust rear panel at maximum
Microphone input: 10 mVrms (-40 dBV), rotary gain adjust rear panel at
maximum
Common Mode Rejection: Microphone input: > 22 dB @ 1 kHz, balanced input
Antenna: 22.9 cm (9") long, semi exible, adjustable, removable, rear panel connector
Compatible Receivers: R863
Approvals: CE, RoHS, WEEE, ETSI EN 301 357-1, 2
Warranty: 3 years (excluding accessory products)
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

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Limited Warranty
Williams Sound products are engineered, designed, and manufactured
under carefully controlled conditions to provide you with many years of
reliable service. Williams Sound warrants the Hearing Helper™ T800
transmitter against defects in materials and workmanship for THREE (3)
years. During the rst three years from the purchase date, we will promptly
repair or replace the Hearing Helper™ T800 transmitter .
Microphones, earphones, headphones, batteries, cables, carry cases, and
all other accessory products carry a 90-day warranty. Chargers carry a 1
year 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 Hearing Helper™ T800
transmitter, 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 PRODUCT IS REPLACEMENT OF THE
PRODUCT. NO PERSON HAS ANY AUTHORITY TO BIND WILLIAMS
SOUND TO ANY REPRESENTATION OR WARRANTY WITH RESPECT TO
THE Hearing Helper™ T800 transmitter. 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 affected, 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.

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If you experience difculty with your system:
Visit our web site for additional product information, instruction sheets,
technical bulletins and application notes: www.williamssound.com
Email us: [email protected]
Telephone: [phone]
If it is necessary to return the system for service, your Customer Service
Representative will give you a Return Authorization Number (RA) and
shipping instruction.
Pack the system carefully and send it to:
Williams Sound
Attn: Repair Dept.
10300 Valley View Rd.
Eden Prairie, MN 55344 USA
Your warranty becomes effective the date you purchase your system. Your
returned warranty card is our way of knowing when your warranty begins.
Please take a moment to ll out and mail the enclosed card. You may also
register your product online: www.williamssound.com/registration.aspx.
This information will help us serve you better in the future. Thank you!