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Summary of Contents for Williams Sound MOD 112
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Page 1: Installation Guide
Installation Guide & User Manual SoundPlus ® WIR TX800 Two Channel Infrared System Large Area Infrared Listening System Modulator Model MOD 112 Emitter Model WIR TX8 ® Williams Sound Receiver Models WIR RX5, RX6 Helping People Hear MAN 084D... -
Page 3: Table Of Contents
Contents Page YSTEM VERVIEW NSTALLATION ROCEDURES TX8 E MITTER ETUP TX8 P OWER IRING ASEBAND ABLE ONNECTION MOD 112 M ODULATOR ETUP ESTING YSTEM ONTROLS AND EATURES MOD 112 F RONT ANEL MOD 112 R ANEL TX8 E MITTER ANEL... -
Page 4: System Overview
TX8 Emitters which use invisible infrared (IR) light waves to broadcast speech or music to wireless infrared receivers. The MOD 112 accepts a variety of audio inputs and sends 95 kHz and 250 kHz frequency modulated signals to the TX8 Emitter via coaxial cable. The emitter emits invisible infrared light into the listening area. - Page 5 IGURE YPICAL YSTEM ONFIGURATIONS Baseband TX8 Emitter Present Indicator (Visible From Below) MOD 112 Modulator MOD 112 Two-Channel Infrared System Modulator Williams Sound Power On Baseband Out Phones Indicator Channel 1 Channel 2 Audio Mode Phones Infrared Limit Discrete Test Out...
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Page 6: Installation
Adjust the TX8 to the desired angle. When the TX8 is in the desired position, gently turn the tension screw clockwise until the swivel head is securely in place. ® Williams Sound Helping People Hear... - Page 7 Practical coverage area is approx. 3,767 sq. ft. (350 sq. m) Single Channel Mode 25° Non-reflective coverage area is 25° approx. 10,000 sq. ft. (930 sq. m) 4: M IGURE ULTIPLE MITTERS NSTALLED AXIMIZE OVERAGE ® Williams Sound Helping People Hear...
- Page 8 10,000 square feet (930 square meters). When two signals are sent to the TX8 (as is the case when the MOD 112 is in Stereo mode or in Discrete mode when both channels are in use), the TX8 divides its power among the two signals. This makes for a practical coverage area of about 3,767 square feet (350 square meters) or about 350 average theater seats.
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Page 9: Step 2: Tx8 Powerw
30 minutes. This auto shut-off feature preserves the life of the infrared LEDs and reduces power consumption. This system is designed for Class 2, low-voltage wiring. Always follow local electrical codes when doing low voltage wiring. ® Williams Sound Helping People Hear... - Page 10 Connect the baseband cable from the Baseband Out Jack on the first emitter in the chain (the one connected to the MOD 112 Modulator) to the Baseband In jack on the next TX8 Emitter in the chain. Use the cable clamps and screws provided to secure the cable.
- Page 11 7. Thread nut into plug assembly until it is secured. 50 Ω BNC Plug Connector Recommended cable clamp tightening torque is 2.8–3.4 N•m [25-30 in.-lb.], using a 7/16" wrench. See figure 7h. Nut Secured Into Plug Assembly ® Williams Sound Helping People Hear...
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Page 12: Step 3: Baseband Cable
Plug the power supply into an AC outlet. ASEBAND ABLE ONNECTION The MOD 112 drives one emitter. The TX8 repeats the baseband signal, so any number of emitters can be used. The modulator outputs CANNOT be split with CATV splitters. UDIO ONNECTION The MOD 112 accepts audio signals from industry-standard low impedance microphones, balanced lines, and unbalanced lines. - Page 13 YSTEM Step 1: After the baseband cable, power cables, and audio source are connected, turn the MOD 112 power switch on. The green power LED on the front of the MOD 112 should light. Step 2: Make sure the sound system is on and your audio source is active. Adjust the Audio Level Control.
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Page 14: Ontrols And Eatures
Control level of setting of the Mode and Phones on at all times. audio signal. switches. MOD 112 Two-Channel Infrared System Modulator Williams Sound Phones Channel 1 Channel 2 Audio Mode... - Page 15 1 meter. The infrared signal emitted from this LED is modulated by the carriers generated in this unit only. If this modulator is connected to other modulators for additional channels, their carriers are not emitted by the LED, and must be monitored at those modulators. ® Williams Sound Helping People Hear...
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Page 16: Mod 112 Rear Panel
UDIO NPUTS The MOD 112’s inputs accepts any low impedance microphone or line level signal. The input circuit is constructed with a “studio grade” differential amplifier, providing better performance than that available using a transformer. It is also fully protected from RFI/EMI. - Page 17 11: MOD 112 C IGURE IRCUIT IAGRAM COMPRESS + 15 V OUT AMPL W/DEEMPH LIGHT LIMIT PHONES CARRIER GRAPH SYNTH LOW PASS LEVEL LEFT INPUT DETECTOR FILTER CARRIER – PREEMPHASIS TIMER LINE DEV. CAL. 95 KHz 50 µSec BASEBAND AMPLIFIER...
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Page 18: Tx8 Emitter Rear Panel
Visible through the left side of the bottom panel. Red indicator light glows when power is on. ASEBAND Connects to the Baseband Out jack of the MOD 112 modulator or another TX8 emitter. ASEBAND Connects to the Baseband In jack of of the next TX8 emitter in the chain when multiple emitters are used. -
Page 19: Receiver Instructions
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 batteries! ® Williams Sound Helping People Hear... - Page 20 30 hours. Rechargeable AA batteries will last about 15 hours per charge. If you are using BAT 026 rechargeable batteries, use the CHG 200A Multi-Charger. Contact your dealer or Williams Sound for details. If the sound becomes weak or distorted, replace the batteries. The indicator light may still be on, even with weak batteries.
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Page 21: Troubleshooting
ECEIVERS OISY Hold a receiver in front of the Infrared Test LED on the front of the MOD 112 modulator and listen to the signal. If the signal is weak and noisy here, check the Input Level switch and Input Level Control settings. Increase the input signal level from the sound system by turning up a mixer control. -
Page 22: Warranty
This warranty does not extend to intentional or accidental physical damage. This warranty applies only to products returned to Williams Sound for service. To return a product for service, call the phone number below and request a Return Authorization (RA) number. -
Page 23: Nfrared
(1) BNC connector, 50Ω Power Connections: 3-pin molex Emitter Type: For use with Williams Sound Infrared Emitters. For multi-emitter systems, each emitter repeats the baseband signal to drive the next emitter in the chain. Accessory Connector: 9-pin, Sub–D female, various circuit connections... -
Page 24: Nfrared
The RPK 005 mounts one modulator in one EIA rack space, the RPK 006 mounts two. Includes all necessary hardware and easy-to-follow instructions. Williams Sound Corp. 10399 West 70th St., Eden Prairie, MN 55344-3459 U.S.A. 800-328-6190 / 952-943-2252 / FAX: 952-943-2174 www.williamssound.com © 2003, Williams Sound Corp. MAN 084D...
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