Williams Sound WIRTX900 User Manual
INFRARED SPECIFICATION DATA
Simultaneous Interpretation • Audio Description • Conferences • Multi-Media Rooms • Boardrooms •
WIR TX900
SoundPlus® Infrared System
The WIR TX900 is a high performance, cost-effective infrared
system designed for simultaneous language interpretation of up
to four languages. Operating on 2.3-3.8 MHz, the WIR TX900
is less susceptible to traditional radio and lighting interference.
When using the optional RX22-4 four-channel receiver, the WIR
TX900 will operate up to 28,000 ft2 in single channel mode, ideal
for auditoriums, theaters or other large venues.
Courtrooms • Schools • Universities • Cinema • Churches
SoundPlus® Infrared System
MOD 232 Modulator
Size, Weight:
Color:
Rack Mount:
Power Supply:
Modulation:
Carrier Frequency:
Signal-to-Noise Ratio:
Frequency Response:
Total Harmonic Distortion:
Audio Processing:
Auto Carrier Shut-Off:
Power Switch:
Power Indicator:
Audio Level Controls:
Audio Indicators:
Carrier LEDs:
Compress Control:
Input Mix LED:
Stereo LED:
Phones Switch:
8.5” W x 8.2” D x 1.7” H (21.5 cm x 20.8 cm x 4.4 cm), 3.1 lbs (1.5 kg)
Black epoxy paint with white legends
1/2 rack space wide, 1 rack space high, one or two modulators may be mounted in a single IEC rack space
with RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Wall Transformer, 24 VAC, 50-60 Hz, 15 VA
North America: TFP 016, UL/CSA
Europe: TFP 027-01, 2-pin Schuko plug, CE
UK: TFP 027-02, 3-pin UK plug, CE
FM Wideband, +50kHz deviation, 50uS pre-emphasis
Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,
Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz
More than 60 dB
30 to 16,000 Hz, +1 dB, -3 dB, electrical response
Less than 2%, electrical response
Compression (slope) adjustable 1:1 or 2:1
Switchable compression gain: Moderate: 16 dB. Max: 33 dB
15 minute timer shuts off carrier when no audio is present (can be disabled)
Two-position push button, ON/OFF
Green LED
CH A and CH B Input Level, rotary knobs
CH A and CH B Audio Level, 10-segment LED’s
4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)
1:1 or 2:1
Indicates inputs A and B audio are mixed and transmitted by CH A, CH B off
Indicates stereo mode
Selects CH1 or CH2 for phones when not in stereo mode
Fig. 1: MOD 232 Front Panel
SoundPlus® Infrared System
Fig. 2: MOD 232 Rear Panel
Input CH A Input CH B
Made in USA
Phones Output:
Infrared Test LED:
Power Input:
Audio Input Jack:
Mic Level:
Line Level:
Audio Line Output Jacks:
Conguration Switches:
Baseband Input Jack:
Baseband Output Jack:
Approvals:
Operating Requirements:
Warranty:
1/4” TRS headphone jack. Accepts stereo, mono, and any impedance phones.
IR LED for receiver testing, monitoring, and audio signal testing
3-Pin Molex, 24 VAC, 50-60 Hz, 15 VA
CHA and CHB combination XLR/TRS jack
Balanced, Lo-Z, 100 µV min. to 90 mV max., 1mV nominal, 3 kΩ input impedance, supplies switchable simplex power
per DIN 45596 for condenser mics
Balanced or unbalanced, 21 mV min. to 10V max., 212 mV nominal, 100 kΩ
RCA Jack, CHA and CHB, 500 mV, unbalanced, 100 Ω source impedance, load impedance must be greater than 1 kΩ
CHA and CHB 8-position DIP switch, selects Mic/Line input, compressor gain, simplex power, discrete or mixed inputs,
carrier frequency, channel disable, auto shut-off timer
BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100 mV, 50 Ω input impedance, use with MOD
232, BNC, RG-58 Cable
Two BNC jacks carry baseband signal, 100 mV/channel, 50Ω source impedance, for use with WIR TX9 or MOD 232
only
CE, FCC, RoHS, WEEE
0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
5 years on modulator, 90 days on accessories
12345678
CH A
12345678
CH B
Configuration
Switches
Audio Line
Output
CH A
CH B
100 Ohms
MOD 232 Infrared System Modulator
Baseband
Input
OutputOutput
50 Ohms
Williams Sound
Power In
24 VAC, 15 VA, 50-60 Hz
Plug
24V
WIR TX9 Emitter:
Dimensions, Weight:
Power Supply:
Power Cable:
Indicators:
Carrier Frequency:
Emitter IR Power:
Coverage Area:
Baseband Input:
Baseband Output:
Baseband Cable:
Operating Requirements:
Mounting Kits:
Warranty:
Approvals:
Compatible Receivers:
11.25” W x 6.25” H x 2.125” D (28.6 cm x 15.9 cm x 5.4 cm), 1.9 lbs (0.9 kg)
Color:
Black with white legends, red acrylic lens (Enclosure available in white with clear or frosted lens)
Wall Transformer, 24 VAC, 50-60 Hz, 35 VA, 3-pin MOLEX Connector
North America: TFP 010, UL/CSA
Europe: TFP 027-01, 2-pin Schuko plug, CE
UK: TFP 027-02, 3-pin UK plug, CE
Note: Each WIR TX9 requires its own power supply
NEC Class 2 wiring, two-conductor, 18 ga., 200’ (61m) max. length
Green LED power indicator, red LED baseband indicator
50 kHz to 8 MHz
3.5 watts
Up to 28,000 ft2 (2,600 m2) in single-channel mode when using the RX22-4 Receiver
Up to 11,000 ft2 (1,021 m2) in four-channel mode when using the RX22-4 Receiver
Up to 10,000 ft2 (929 m2) in single-channel mode when using the RX18 Receiver (See coverage area diagrams)
BNC, 100 mV per carrier, 50Ω, for use with WIR TX9 or MOD 232 only
BNC, 50 Ω, for use with TX9 only
RG 58 Coax, BNC connectors, maximum 1000’ (300m) length
0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6
5 years on emitter, 90 days on accessories
CE, FCC, RoHS, WEEE
WIR RX22-4 Four-Channel Receiver
WIR RX18 Two-Channel Receiver
WIR RX15-2 Two-Channel Receiver
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