Williams Sound Hearing Helper T800 Guida
Hearing Helper™
Wireless FM Listening System
MAN 143C
Manual and User Guide
Transmitter Model T800
Optional Receiver Model R863
MAN 143C
Hearing Helper™Wireless FM Listening System
2
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 Specications............................................................................. 19
MAN 143C
Hearing Helper™Wireless FM Listening System
3
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 difculties, 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: +1 952 943 2252.
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
MAN 143C
Hearing Helper™Wireless FM Listening System
4
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.
MAN 143C
Hearing Helper™Wireless FM Listening System
5
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 briey 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.
MAN 143C
Hearing Helper™Wireless FM Listening System
6
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.
MAN 143C
Hearing Helper™Wireless FM Listening System
7
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.
MAN 143C
Hearing Helper™Wireless FM Listening System
8
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.
MAN 143C
Hearing Helper™Wireless FM Listening System
9
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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