Williams Sound MOD 112 Bedienungsanleitung PDF herunterladen (Seite 9)

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Sound Plus

™

Basic Courtroom System, Model WIR SYS 1

Modulator, Model MOD 232

The infrared system shall consist of separate modulator and emitter units, with portable receivers. The modulator unit

shall be a half-rack style, metal enclosure. A rack panel shall be available to mount one or two modulator units within

a single EIA rack space. An adjustable floor stand and mounting bracket shall be available to mount the modulator and

emitter together for portable operation.

The modulator shall provide two channels of selectable FM carrier signals; 2.3/2.8/3.3/3.8 MHz, so that a single

modulator can be used to simultaneously transmit up to two channels, and two modulators can be ganged together

to transmit up to four channels simultaneously. The carrier signals shall use 50 kHz deviation and 50 µS pre-emphasis.

The carrier signals (baseband) shall be transmitted to one or more emitters by 50 ohm RG58 coaxial cable with

BNC-type connectors. A BNC-type baseband input jack and baseband output jack shall be provided on the modulator.

The modulator shall be powered by an external 24 VAC, 10 VA, 50-60 Hz power supply, connected via a 3-pin Molex

power connector.

It shall have a rocker-type power switch, power LED indicator, four carrier indicator LEDs and two bar graph-type LED

audio indicators. The modulator shall have a modulated IR LED on the front panel for testing purposes, and a

headphone jack that accommodates mono and stereo 1/4" headphones and channel monitoring switch. The modulator

shall have two rotary audio input level controls, and a screwdriver adjustable control for varying the input

compression from 1:1 to 4:1. The modulator shall have two timers that automatically shut off the carriers when there

is no audio signal present for 30 minutes. The modulator shall have two combination input jacks that accept 3-pin XLR

plugs for balanced microphone input or 1/4" TRS plugs for balanced or unbalanced line-level inputs. The XLR inputs

shall be low impedance, accept signal levels from 100 µV to 90 mV, and supply 15 V simplex power per DIN45596.

The TRS jacks shall accept balanced or unbalanced audio signal levels from 21 mV to 10 V. The modulator shall have

CE, FCC, Industry Canada and AS approval and carry a five-year parts and labor warranty.

The modulator shall be the Williams Sound Corp. model MOD 232.

Emitter, Model TX9

The emitter shall be contained in a metal enclosure with a shatter-resistant lens. The emitter shall include an omni-

directional mounting bracket for permanent installation and a bracket shall be available for mounting on a floor stand

for portable installations. Each emitter shall be powered by a 24 VAC, 50 VA, 50-60 Hz power supply. The power

connector shall be a 3-pin Molex-type. The emitter shall have a BNC-type 50 ohm baseband input and a BNC-type base-

band 50 ohm output jack. The emitter shall have a repeater circuit to allow multiple numbers of emitters to operate

from the baseband signal. The emitter shall have a visible LED indicator for power and for baseband signal. Carrier

frequency is 50KHz to 8 MHz. The emitter shall shut off when the baseband signal is not present. The emitter shall pro-

vide an effective coverage area of 28,000 sq ft (2,600 sq m) in single channel mode and 18,000 sq ft (1,700 sq m) in two

channel mode when using the RX12-4 or RX16 receiver. The emitter shall be convection-cooled, without fans. The emit-

ter shall have CE, FCC, RoHS, and WEEE approval and carry a five-year warranty on parts and labor.

The emitter shall be Williams Sound Corp. model WIR TX9.

Four-Channel Receiver, Model RX12-4

The receiver shall be a body-pack type with an IR detector lens on the face of the unit. The unit shall have a lanyard

forhands-free operation. The receiver shall have a rotary-type volume control. The receiver shall operate for 60 hours

with two AA alkaline batteries and for 30 hours per charge with NiMH AA batteries. The receiver shall be charged

without battery removal via charger contacts in the case. A drop-in charger accessory shall recharge the batteries in

14 hours. The receiver shall be housed in an impact resistant plastic case with a hinged battery door that does not

separate from the receiver. The receiver shall receive 2.3 MHz, 2.8 MHz, 3.3 MHz or 3.8 MHz modulated IR signals with

50 µS de-emphasis. The receiver shall have a 3.5 mm stereo phone jack and accommodate low-impedance mono or

stereo earphones and headphones. The receiver shall accommodate neckloop telecoil couplers. The receivers shall

provide 110 dB SSPL90 with EAR 013 earbud-type earphones.

The system electrical frequency response shall be 25 Hz to 16 kHz, +1, -3 dB and the signal-to-noise ratio shall be

60 dB. The receiver shall have CE, FCC, Industry Canada and AS approval. The receiver shall be covered by a five-year

parts and labor warranty, excluding earphones, headphones, batteries and chargers.

The receiver shall be the Williams Sound Corp. Model WIR RX12-4.

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