Williams Sound SoundPlus Infrared System WIR TX925 - Manual (Page 8)

SoundPlus ® Infrared System
Bid Specs
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 three-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 or 2:1. The modulator shall have two timers
that automatically shut off the carriers when there is no audio signal
present for 15 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,
RoHS, and WEEE approval and carry a five-year parts and labor
warranty.
The modulator shall be the Williams Sound model MOD 232.
Emitter, Model WIR 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 baseband 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 provide an effective coverage area of up to 28,000 sq ft (2,600
sq m) in single channel mode and up to 18,000 sq ft (1,700 sq m)
in two channel mode when using the RX22-4 receiver. The emitter
shall be convection-cooled, without fans. The emitter shall have CE,
FCC, RoHS, and WEEE approval and carry a five-year warranty on
parts and labor.
The emitter shall be Williams Sound model WIR TX9. Four-Channel Receiver, Model RX22-4
The receiver shall be a body-pack type with IR detector lens
behind face of the unit. The unit shall have a lanyard for hands-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 8 hours when used with CHG 3512 charger. 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 output with EAR 013 earbud-type
earphone.
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, RoHS, and WEEE 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 model WIR RX22-4.
Receiver, Model WIR RX18
The receiver shall be an under-chin stetho style with an IR detector
lens in the face of the unit. The receiver shall have a rotary type
volume control and the power switch shall be built into the arms of
the unit so it will automatically shut off when not in use. The receiver
shall operate for seven hours per charge with the BAT AP07D
NiMH battery pack. The receiver shall be housed in a black and
grey plastic case. The receiver shall have a three position selector
switch for 2.3 MHz, stereo or 2.8 MHz modulated IR signals. The
receiver shall provide 120dB SSPL90 output. The system electrical
frequency response shall be 200Hz to 8kHz and the signal to noise
ratio shall be 60dB at 10m. The receiver shall have CE, RoHS and
WEEE approval and be covered by a five-year parts and labor
warranty (90 days on battery pack).
The receiver shall be the Williams Sound model WIR RX18.
Receiver, Model WIR RX15-2
The receiver shall be a headset style with IR detectors positioned
on top of each individual earphone. The receiver shall operate on
2.3 MHz or 2.8 MHz frequency. The receiver shall have an individual
rotary-type volume control on each individual earphone and a on/
off selection switch on the right earphone. The receiver shall have a
slide-button frequency selector to choose between 2.3 MHz or 2.8
MHz operation. The receiver shall provide 118 dB SSPL90 output,
+/- 1 dB, and a signal-to-noise ratio of 60 dB. The receiver shall
operate up to 80 hours when using AAA alkaline non-rechargeable
batteries. The receiver shall be encased in a black, plastic case. The
receiver shall operate up to 3,500 ft2 (325 m2) when using a single
WIR TX9 Emitter. The receiver shall have CE, RoHS, and WEEE
approval and be covered by a two-year parts and labor warranty,
not including batteries or accessories.*
The receiver shall be the Williams Sound model WIR RX15-2.