Williams Sound WIR TX90 DC Users Manual

WIR TX-9 DC, WIR TX-90 DC

Infrared Emitter and Transmitter

Installation Guide & User Manual

Optional Receiver Models WIR RX22-4, WIR RX18

Optional Charger Models CHG 518, CHG 3512

MAN 209B

WIR TX9 DC Emitter, WIR TX90 DC Transmitter

Contents

System Overview ..............................................................................................................................................................3

Determine Coverage Area ................................................................................................................................................4

Connect Power ................................................................................................................................................................6

Power Connection (Universal) ....................................................................................................................................6

Connect Audio Source .....................................................................................................................................................7

Selecting a Carrier Frequency ...........................................................................................................................................7

Selecting a Channel ..........................................................................................................................................................7

Select the Audio Processing Application Preset ................................................................................................................8

Adjusting Audio Input Level ..............................................................................................................................................8

Adjusting Tone .................................................................................................................................................................. 8

Using the Optional WIR TX9 DC Slave Emitter for Additional Coverage .............................................................................9

Receiver Safety Information ............................................................................................................................................10

Recycling Instructions .....................................................................................................................................................10

Optional Infrared Receivers .............................................................................................................................................11

Optional Chargers ..........................................................................................................................................................12

Troubleshooting ..............................................................................................................................................................13

The WIR TX90 DC “Power On” indicator is not lit. ....................................................................................................13

The WIR TX90 DC channel A or B “On” indicator is not lit. .......................................................................................13

No sound through receivers. ...................................................................................................................................13

Sound through the receivers is weak and noisy. ..........................................................................................................13

Buzzing or humming noise in sound system. ...........................................................................................................13

Specications - WIR TX90 DC ........................................................................................................................................14

Specications - WIR TX9 DC ..........................................................................................................................................15

Limited Warranty ............................................................................................................................................................15

2

WIR TX9 DC Emitter, WIR TX90 DC Transmitter

System Overview

The WIR TX90 DC two channel infrared transmitter combines infrared modulator and emitter technology into a single
mountable enclosure - reducing operating cost and eliminating precious rack space.

The WIR TX90 DC features an easy to use conguration preset for Music, Voice, or Hearing Assistance Applications. It

operates on dual 2.3/2.8 or 3.3/3.8 MHz selectable frequencies - ideal for high quality audio programs such as music,
theater and audio description. The WIR TX90 DC will accept any line level, balanced or unbalanced audio inputs, and
includes adjustable tone and volume control. Infrared receivers detect the transmission and convert the light signals back

into audio signals. The 2.3-3.8 MHz operating frequencies minimize high eciency lighting interference. No FCC license

or radio approval is required with this equipment. It can be used anywhere in the world.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant

to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.

NOTICE: A plasma monitor can degrade the audio quality of the Infrared Listening System.

Typical Two-Channel conguration for the WIR TX90 DC

AUDIO
INPUTS

POWER
SUPPLY

CH B

AUDIO IN

SOUND SYSTEM

TO ADDITIONAL
EMITTERS
(IF NECESSARY)

CH A
AUDIO IN

BASEBAND
OUTPUTS

MOUNTING
BRACKET

RX22-4 RECEIVERS

(WIRELESS)

3

WIR TX9 DC Emitter, WIR TX90 DC Transmitter

Determine Coverage Area

Determine the coverage area needed for the seating area. When using the WIR TX90 DC transmitter with the RX22-4 receiver,
in single channel mode, the WIR TX90 DC can achieve a coverage area of 30,000 sq. ft. (2,787 sq. m.). In four channel mode,
the WIR TX90 DC divides its power among the four signals to achieve a coverage area of 11,000 sq. ft. (1,022 sq. m.).

NOTE: The coverage area will vary depending on the sensitivity of the infrared receiver being used. The following

diagram illustrates coverage area when using a RX22-4, RX15-2, or RX18 receiver with a single WIR TX90 DC
transmitter in single channel mode.

Maximum range when using the RX22-4, RX15-2, or RX18 Receiver

FEET

FEET

90

80

70

60

50

40

30

20

10

0

-10

-20

-30

-40

-50

-60

-70

-80

-90
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160

0

RECEIVER COVERAGE AREA WITH

TX9 DC OR TX90 DC TRANSMITTER

IN SINGLE-CHANNEL MODE

RX22-4 RECEIVER

RX18 RECEIVER

These patterns are the direct radiation pattern. The infrared radiation does not drop to zero outside the illustrated patterns; it

decreases. It still may be useable at a greater distance, depending on the receiver sensitivity and the reective characteristics of

the room.

Reections of the infrared light from walls, ceilings, and oors may change these patterns.

Important: Remember to point the transmitter towards the listening audience!

Remember: opaque objects block infrared light. Thus, the transmitter cannot be concealed behind opaque walls, curtains, etc.

4

A237

WIR TX9 DC Emitter, WIR TX90 DC Transmitter

3-Dimensional IR Illumination Pattern

Overlapping Illumination patterns to cover Larger Listening Areas

WIR TX90 DC WIR TX9 DC

When pointing the emitter, be sure to keep the
long dimension horizontal.

CORRECT

INCORRECT

WIR TX9 DC WIR TX9 DC

Overlapping Illumination patterns to cover Larger Listening Areas

WIR TX90 DC

WIR TX9 DC

COVERAGE AREA
WITH SINGLE TRANSMITTER

COVERAGE AREA
WITH SECOND EMITTER
ADDED TO SAME
EMISSION POINT
(50% INCREASE)

5