Williams Sound WIR SYS 2 User Manual

2 SYS WIR Model • System Courtroom Value ®SoundPlus

SoundPlus® Value Courtroom System • Model WIR SYS 2

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ADA COURTROOM ASSISTIVE LISTENING SYSTEM

Description:

The Value Courtroom System, model WIR SYS 2, is the ideal hearing assistance package for courtrooms with limited budget resources. Participants wear headset style receivers to listen to the courtroom proceeding at the volume of their comfort level anywhere in a 4,000 ft2 area. For the severely hard of hearing, the RX22-4 receiver can be used with a neckloop (included) to amplify the participant’s telecoil equipped hearing aid. SoundPlus infrared technology ensures privacy and security: the message of the proceeding will not travel outside the walls of the courtroom.

Each WIR SYS 2 package includes: one (1) TX9 emitter, one (1) MOD 232 modulator, three (3) headset RX14-2 receivers, one (1) RX22-4 receiver, one (1) HED 021 Headphone, one (1) NKL 001 neckloop and one (1) RPK 005 rack panel kit. The WIR SYS 2 meets and exceeds government ADA regulations for public hearing assistance, and is backed by a fiveyear warranty.*

MOD 232 Modulator:

Size, Weight:	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)
Color:	Black epoxy paint with white legends
Rack Mount:	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
Power Supply:	Wall Transformer, 24VAC, 50-60 Hz, 15VA
	North America:	TFP 016, UL/CSA
	Europe:	TFP 027-01, 2-pin Schuko plug, CE
	UK:	TFP 027-02, 3-pin UK plug, CE
Modulation:	FM Wideband, +50kHz deviation, 50uS pre-emphasis
Carrier Frequency:	Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,
	Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz
Signal-to-Noise Ratio:	More than 60dB
Frequency Response:	30 to 16,000 Hz, +1 dB, -3 dB, electrical response
Total Harmonic Distortion:	Less than 2%, electrical response
Audio Processing:	Compression (slope) adjustable from 1:1 to 4:1
	Switchable compression gain: Moderate: 16 dB. Max: 33 dB
Auto Carrier Shut-Off:	15-minute timer shuts off carrier when no audio is present (can be disabled)

Fig. 1: MOD 232 Front Panel

Two Channel Infrared System Modulator													Williams Sound
Microprocessor Controlled				+9	3.8						+9	3.8		Inputs Mixed
Frequency Synthesized
		5 6		+6				5			+6			Phones
	4			+3	3.3	Compress	4		6		+3	3.3	Compress
	3		7	0			3			7	0			Stereo
				- 3	2.8						- 3	2.8
Power	2		8	-6			2			8	-6
				-9	2.3						-9	2.3		CH A
	1		9				1			9
		10		-12	Frequency				10		-12	Frequency		IR
	0			-15			0				-15
	Level			-18	(MHz)		Level				-18	(MHz)
														CH B
				Channel A							Channel B

Power Switch:	Two-position push button, ON/OFF
Power Indicator:	Green LED
Audio Level Controls:	CHA and CHB Input Level, rotary knobs
Audio Indicators:	CHA and CHB Audio Level, 10-segment LED’s
Carrier LEDs:	4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)
Compress Control:	1:1 to 4:1
Input Mix LED:	Indicates inputs A and B audio are mixed and transmitted by CHA, CHB off
Stereo LED:	Indicates stereo mode
Phones Switch:	Selects CH1 or CH2 for phones when not in stereo mode
Phones Output:	1/4" TRS headphone jack. Accepts stereo, mono, and any impedance phones.
Infrared Test LED:	IR LED for receiver testing, monitoring, and audio signal testing.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

*90 days on accessories.

	©2006, Williams Sound Corp. MCAT 028D	1

2 SYS WIR Model • System Courtroom Value ®SoundPlus

SoundPlus® Value Courtroom System • Model WIR SYS 2

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Fig. 2: MOD 232 Rear Panel

Input CH A	Input CH B			Audio Line		MOD 232 Infrared System Modulator
		CH A	1 2 3 4 5 6 7 8	Output		Baseband	Williams Sound
		CH B		CH A	Input	Output	Output
			1 2 3 4 5 6 7 8				Power In
							24 VAC, 15 VA, 50-60 Hz

Configuration	CH B	Plug
Switches
Made in USA	100 Ohms	50 Ohms
		24V

Power Input:	3-Pin Molex, 24 VAC, 50-60 Hz, 15 VA
Audio Input Jack:	CHA and CHB combination XLR/TRS jack
Mic Level:	Balanced, Lo-Z, 100 µV min. to 90 mV max., 1mV nominal, 3 kΩ input impedance, sup-
	plies switchable simplex power per DIN 45596 for condenser mics
Line Level:	Balanced or unbalanced, 21 mV min. to 10 V max., 212 mV nominal, 100 kΩ
Audio Line Output Jacks:	RCA Jack, CHA and CHB, 500 mV, unbalanced, 100 Ω source impedance, load imped-
	ance must be greater than 1kΩ
Configuration Switches:	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
Baseband Input Jack:	BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100mV, 50Ω
	input impedance, use with MOD 232, BNC, RG-58 Cable
Baseband Output Jack:	Two BNC jacks carry baseband signal, 100 mV/channel, 50 Ω source impedance, for use
	with WIR TX9 or MOD 232 only
Approvals:	CE, FCC, RoHS, WEEE
Operating Requirements:	0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Warranty:	5 years on modulator, 90 days on accessories

WIR TX9 Emitter:

Dimensions, Weight:	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
Power Supply:	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
Power Cable:	NEC Class 2 wiring, two-conductor, 18 ga, 200’ (61 m) max. length
Indicators:	Green LED power indicator, red LED baseband indicator
Carrier Frequency:	50 kHz to 8 MHz
Emitter IR Power:	3.5 watts
Coverage Area:	28,000 ft2 (2,600 m2) in single-channel mode when using the RX22-4 Receiver
	18,000 ft2 (1,700 m2) in two-channel mode when using the RX22-4 Receiver
	3,500 ft2 (325 m2) in single-channel mode when using the RX14-2 Receiver
	3,063 ft2 (285 m2) in single-channel mode when using the RX16 Receiver
	(See coverage area diagrams)
Baseband Input:	BNC, 100 mV per carrier, 50 Ω, for use with WIR TX9 or MOD 232 only
Baseband Output:	BNC, 50 Ω, for use with TX9 only
Baseband Cable:	RG 58 Coax, BNC connectors, maximum 1000' (300 m) length
Operating Requirements:	0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Mounting Kits:	Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6
Warranty:	5 years on Emitter, 90 days on accessories
Approvals:	CE, FCC, RoHS, WEEE
Compatible Receivers:	WIR RX22-4 Four-Channel Receiver, RX14-2 Two-Channel Receiver,
	RX16 Two-Channel Receiver

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

	©2006, Williams Sound Corp. MCAT 028D	2

SoundPlus® Value Courtroom System • Model WIR SYS 2

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SoundPlus

Note: It is normal for this unit to feel warm while it is in operation.

Mounting

Fig. 3: WIR TX9 Rear Panel

Multi-Channel Infrared Transmitter

RoHS

CAUTION

RISK OF ELECTRIC SHOCK

w w w . w i l l i a m s s o u n d . c o m

DO NOT OPEN

Class 1

WARNING: TO REDUCE THE RISK OF FIRE OR

LED Product

ELECTRIC SHOCK DO NOT EXPOSE THIS

®

EQUIPMENT TO RAIN OR MOISTURE.

Bracket

Power Supply Wiring:

Use NEC, Class 2 Wiring, 18 ga. minimum,

200 ft. (70m) maximum length (18 ga.)

Baseband Signal Wiring:

Value						Baseband Signal Wiring:							Use 50 Ohm Coaxial Cable (RG58)
						Use RG58 Coax,1000 ft. (350m) max. length
						Williams Sound Corp., Minneapolis, Minnesota, USA				Made in U.S.A.
						Patent Pending
															Baseband
															(Modulation)
							NC 24 VAC						Out	Out	In
						Power In:
						24VAC~		Plug							50 Ohms
						50-60Hz
						35VA
									Power On				Baseband On
Courtroom	Fig. 4: Receiver Coverage Area with TX9 Emitter in Single Channel Mode
	Feet	90
		80													Receiver Coverage Area with TX9
															Transmitter in Single Channel Mode
		70
		60													RX22-4 Receiver
• System
		50													RX14-2 Receiver
		40													RX16 Receiver
		30
		20
		10					RX16				RX14-2		RX22-4
Model		0
		-10
		-20
		-30
WIR
		-40
		-50
SYS
		-60
		-70
2
		-80
		-90
	Feet	0	10	20	30	40	50	60	70	80	90	100 110 120 130 140 150 160

The coverage area for the TX9 will vary depending on the receiver being used. The diagram above demonstrates the receiver coverage when operating a single TX9 emitter in single channel mode. Patterns are direct radiation patterns.

Note: Reflections of the infrared light from walls, ceilings and floors may change these patterns.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

	©2006, Williams Sound Corp. MCAT 028D	3

SoundPlus® Value Courtroom System • Model WIR SYS 2

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• System Courtroom Value ®SoundPlus

Fig. 5: 3-Dimension Foot Pattern

The TX9 floods the listening audience with a cone shape light pattern as shown here.

The path of the cone shape light leaves a pattern on the ground, or "foot print, " and indicates where the strongest receiver reception will occur.

The actual coverage area will vary depending on the sensitivity of the receiver being used. Refer to Figures 4 and 7 to determine how many emitters are required for 100% coverage of the listening area.

To determine the best location for the emitter, it helps to think of the IR emitter as an invisible floodlight. You’ll want to aim it so the listeners are “flooded” with the infrared light. The emitter should also be positioned high enough so it won’t be blocked by people and other physical obstructions. See Figure 6 below. Mount the emitter at least 2 ft. (.61 m) above the audience. Position the emitter to face in a slightly downward angle, 20°, that will increase the “throw” of the infrared beam.

Model	Fig. 6: Vertical Beam Spread
WIR	Minimum Receiver Range When Operating with a TX9 Emitter in Single Channel Mode
	RX22-4 Receiver:
2 SYS			RX14-2: 80' (24 m)		RX16: 70' (21 m)
	150' (45 m)
			(Range)
					TX9
		Center	Of Emitter	Beam
					30'
					SCREEN
	6'
					STAGE

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

	©2006, Williams Sound Corp. MCAT 028D	4