® Manual and User Guide Hearing Helper™ T800 Transmitter Wireless FM Listening System Transmitter Model T800 Optional Receiver Model R863 MAN XXX © 2008 Williams Sound Corp.
Hearing Helper™ T800 Transmitter Manual and User Guide Contents Page System Overview...................................................................... 3 T800 Transmitter Instructions................................................. 4-6 Features and Controls.......................................................... 4 Antenna Connection............................................................ 4 Power Connection............................................................... 4 Selecting a Frequency..
System Overview Thank you for purchasing the Hearing Helper™ T800 transmitter from Williams Sound Corp. 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.
Setting up the T800 Fig. 2: Features & Controls 1 2 3 4 9 10 11 9. Antenna Connector 10. RF Power Output Switch 11. Audio Input Jack, RCA Type (Line-level, Unbalanced) with Gain Control 4 5 6 7 8 5. Down Button 6. Set Button 7. Menu Control 8. Power ON/OFF Control 1. Headphone Jack 2. Headphone Volume Control 3. Frequency Display (LCD) 4. Up Button 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.
of the unit. On power up, “Williams Sound T800” will appear briefly while the system initializes. The system will then display the current operating “CHANNEL” (1-16). • Step 4: 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 Non-standard operating channels (4-16) available are: CH 4 = 863.
• Step 6: Adjust the audio Level Locate the “Gain Control” on the rear of the T800. With the audio source playing, use a small screwdriver or tuning wand to 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.
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.
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. Recycling Instructions Help Williams Sound protect the environment! Please take the time to dispose of your equipment properly.
Using the Optional R863 Receiver FIG.
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 “ the Receiver. ” Jack on top of 3. Put on the earphone or place the headphones over your ears. 4.
Belt Clip Installation 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. Fig. 4A Fig.
R863 Receiver Battery Information Installation Open the battery compartment by lifting the tab on the back of the transmitter or receiver with your finger. 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.
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.
Optional Battery Chargers for the R863 Receiver Fig: 6A: CHG 3512 / 3512 PRO Multi-Charger Fig: 7A: CHG 3502 Dual-Bay Charger CHG 3502 Rear View Receiver or Transmitter Charging LED Indicator AC Power Connection For more information on available chargers, visit www.williamssound.com or call +1 952 943 2252.
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.
Sound through receivers is loud, but distorted. Noise (room noise or electronic 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. Buzzing or humming noise in sound system.
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 FIVE (5) years. During the first five years from the purchase date, we will promptly repair or replace the Hearing Helper™ T800 transmitter .
claimer of Warranty is held to be illegal, unenforceable, or in conflict 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.
Hearing Helper™ T800 Transmitter Dimensions: Weight: Color: Power: Power Switch: Temperature Range: Operating Frequencies: RF Output: RF Switch: LCD Display: Menu Push Buttons: Headphone Output: Stability: FM Deviation: Pre-Emphasis: Nominal Range: Frequency Response: Microphone input: Signal/Noise Ratio (1 KHz): %THD + noise (1 KHz): Audio Processing: Audio Input: Audio Levels: Common Mode Rejection: Antenna: Compatible Receivers: Approvals: Warranty: 21.
® 10321 West 70th St., Eden Prairie, MN 55344 U.S.A. 800.843.3544 | 952.943.2252 | FAX: 952.943.2174 www.williamssound.com ©2008 Williams Sound Corp.
