Williams Sound Hearing Helper T800 User manual

T800
FM Transmitter
The T800 FM transmitter will broadcast a speaker’s voice, music
program, or audio service wirelessly up to 122m (400ft) to a
listening audience. Quick and easy setup: The installer simply
connects a microphone with a XLR or 1/4” plug into the unit
to broadcast their voice. Alternatively, the unit can connect to
a sound system through a line-level (RCA) jack to broadcast
music or other audio service. The T800 features three channels
on 863.250, 863.750 or 864.750 MHz. For simultaneous
interpretation, up to three T800 transmitters may be installed in
a single facility for broadcasting three languages with minimal
crosstalk or interference. Audience participants use the three-
channel R863 FM receiver (optional) to pick up the broadcast for
language interpretation or hearing assistance applications.
Houses of Worship • Schools • Ofces • Auditoriums • Cinema • Government • Any Place of Public Access
FM SPECIFICATION DATA

© 2011, Williams Sound, LLC MCAT 069A
FM Transmitter
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
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
T800 Transmitter:
T800 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 microphone 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)
* 90 DAYS ON ACCESSORIES.

© 2011, Williams Sound, LLC MCAT 066B
800.843.3544 / [email protected] / www.williamssound.com
FM Transmitter
T800 Rear Panel
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, Dynamic mic only
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 TNC type connector
Compatible Receivers: R863
Approvals: CE, RoHS, WEEE, ETSI EN 301 357-1, 2
Warranty: 3 years*
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
* 90 DAYS ON ACCESSORIES.
Domestic Sales
Williams Sound
10300 Valley View Rd.
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252
FAX: [phone]
Email: [email protected]
Web: www.williamssound.com
International Sales
International Sales Department
Williams Sound
10300 Valley View Rd.
Eden Prairie, MN 55344 USA
Phone: [phone]
Fax: [phone]
Email: [email protected]
Web: www.williamssound.com