William Sound WIR TX-9 DC Troubleshooting guide
MAN 209B
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
2
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
Specications - WIR TX90 DC ........................................................................................................................................14
Specications - WIR TX9 DC ..........................................................................................................................................15
Limited Warranty ............................................................................................................................................................15
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 conguration 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 eciency 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.
CH B
AUDIO IN
CH A
AUDIO IN
SOUND SYSTEM
TO ADDITIONAL
EMITTERS
(IF NECESSARY)
MOUNTING
BRACKET
AUDIO
INPUTS
BASEBAND
OUTPUTS
RX22-4 RECEIVERS
(WIRELESS)
A625
POWER
SUPPLY
Typical Two-Channel conguration for the WIR TX90 DC
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.
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
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
FEET
FEET
RX22-4 RECEIVER
RX18 RECEIVER
RECEIVER COVERAGE AREA WITH
TX9 DC OR TX90 DC TRANSMITTER
IN SINGLE-CHANNEL MODE
A627
Maximum range when using the RX22-4, RX15-2, or 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 reective characteristics of
the room.
Reections 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
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
CORRECT
INCORRECT
A230
When pointing the emitter, be sure to keep the
long dimension horizontal.
A237
3-Dimensional IR Illumination Pattern
WIR TX90 DC WIR TX9 DC
WIR TX9 DC WIR TX9 DC
A628
Overlapping Illumination patterns to cover Larger Listening Areas
WIR TX90 DC
COVERAGE AREA
WITH SINGLETRANSMITTER
COVERAGE AREA
WITH SECOND EMITTER
ADDED TO SAME
EMISSION POINT
(50% INCREASE)
WIR TX9 DC
A629
Overlapping Illumination patterns to cover Larger Listening Areas
5
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
Connect Power
WARNING: POWERLINE VOLTAGE MUST NOT FALL BELOW 90V, 0R SYSTEM PERFORMANCE WILL BE
GREATLY REDUCED!
Power Connection (Universal)
Connect the TFP 053 power supply to the barrel connector jack located on the rear of the TX90 DC (see “WIR TX90 Rear View”).
Use the line cord appropriate for the country of use.
WLC 004 USA Line Cord
WLC 005 Euro Line Cord
WLC 006 UK Line Cord
WLC 007 Australia Line Cord
WCA 123 DC Power Extension Cable. This optional cable can be used to extend the DC power connection by 50 ft.
NOTE: The WIR TX90 DC transmits when a baseband signal is present, and will shut o after 20 minutes when no baseband
signal is present. This auto shut-o feature preserves the life of the infrared LEDs and reduces power consumption.
This system is designed for class 2, low-voltage wiring. Always follow local electrical codes when doing low voltage wiring.
A624
POWER CONNECTION
BARREL CONNECTOR JACK
WALL/CEILING
MOUNTING BRACKET (BKT 024)
SET OF THREADED HOLES FOR USE
WITH MOUNTING BRACKET
BASEBAND OUT
BNC CONNECTOR, 50 Ω
50 KHZ-8 MHZ BASEBAND
WIR TX90 Rear View
6
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
Connect Audio Source
Determine the length of the audio cable needed to connect to the sound system to the WIR TX90 DC transmitter. Install the
supplied Phoenix connector on the end of the audio cable to be connected to the transmitter. See the back of the WIR TX90 DC
for wiring instructions.
LINE LEVEL BALANCED OR UNBALANCED (5V P/P MAXIMUM AUDIO) A232
BALANCED UNBALANCED
SIGNAL
SHIELD
–
G
+
SIGNAL
SHIELD
–
G
+
SIGNAL
JUMPER
Audio Source Connections
FREQUENCY
SELECTION SWITCH
(2.3/2.8 OR 3.3/3.8)
CHANNEL
ON/OFF
BUTTON
“PRESET”
INDICATOR
LEDS
AUDIO
ADJUSTMENT
DIAL
HEADPHONE
JACK (3.5mm)
POWER “ON”
INDICATOR
LED
AUDIO SOURCE
LEVEL
INDICATOR LEDS
CH A
“ON”
LED
CH B
“ON”
LED
PRESET
SELECT
BUTTON
“TONE” or “VOLUME”
SELECTED
INDICATOR LEDS
The WIR TX90 DC will accept line level, balanced or unbalanced audio inputs. If you wish to operate in single channel mode, plug
the audio cable with the installed Phoenix connector in “Channel A” OR the “Channel B” connector. If you choose to operate in
two channel mode, plug the audio cables with Phoenix connectors in both “Channel A” AND “Channel B” connector.
NOTE: By default, the WIR TX90 DC is set to operate in two-channel mode. To turn Channel A or Channel B on/o, refer to
the instructions Selecting a Channel, below.
Selecting a Carrier Frequency
The WIR TX90 DC oers two sets of carrier frequencies for Channel A and Channel B:
2.3 and 2.8 MHz or 3.3 and 3.8 MHz.
The WIR TX90 DC is preset to 2.3 and 2.8 MHz, which are the most commonly used. Move the slide switch to select a pair of
operating frequencies.
Selecting a Channel
To activate a channel, press the “CHANNEL” button until the channel “ON” indicator lights. For example, to operate only channel
A, press the “CHANNEL” button until only the channel A “ON” indicator lights. To operate both channel A and B, press the
“CHANNEL” button until both “ON” indicators light.
Note: If you’re only using one channel, make sure the other channel is turned o to maximize system coverage.
Bottom of WIR TX90 DC
7
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
Select the Audio Processing Application Preset
The WIR TX90 DC oers three preset audio processing options for the most common applications: Music, Voice, and Hearing
Assist. Use the “Music” setting when maximum dynamic range and audio quality are preferred. Use the “Voice” setting for
simultaneous interpretation, audio description, or other applications with users that have primarily normal hearing. Use the
“Assist” setting for hearing assistance applications to meet the reduced dynamic range needs of hearing impaired listeners.
You may select the same audio pre-set for both Channel A and Channel B, or you may select them independently.
To select the audio processing preset, you must rst activate the channel you want to adjust. Press the “channel” button to
activate the channel(s) you want to choose an audio processing preset for, then press the “Presets” button to choose the
preset. The Music, Voice, or Assist indicator will light to show your selection. After 10 seconds, the setting will be stored.
Adjusting Audio Input Level
The TX90 DC is designed to accept a line-level audio input signal. The “Level” indicator light for each channel is used to help
adjust the audio input level. When the indicator does not light, the input signal level is too low. When the indicator is ashing,
the signal level is optimal. When the indicator is steadily lit, but does not ash, the input level is too high and can cause
distortion. You can adjust the input level of both channels simultaneously, or independently.
Make sure the input audio signal is connected to the WIR TX90 DC. To adjust the audio input level, rst activate the channel(s)
you want to adjust by pressing the “CHANNEL” button, then press the “VOLUME” button. The Volume indicator will light.
Now, turn the “ADJUST” knob clockwise to increase the input signal or counter-clockwise to decrease the input signal until
the channel “Level” indicator is ashing. After 10 seconds, the setting will be stored.
IMPORTANT
Audio level NORMAL (optimal): the audio indicator level will flash at a 1 second rate.
Audio level too HIGH: the audio indicator level will stay on or flash erratically.
Audio level too LOW: the audio indicator level will be off.
Adjusting Tone
The WIR TX90 DC has a tone adjustment to suit user preference and to compensate for the dierent frequency responses of
various infrared receiver models. First, make sure the audio source is active. Use a receiver from the system to listen to the
signal as you adjust the tone control.
To adjust the tone, rst activate the channel(s) you want to adjust by pressing the “CHANNEL” button, then press the
“TONE” button. The tone indicator will light. Now turn the “ADJUST” knob clockwise to emphasize high frequencies (best
for hearing assistance use). When you have reached the maximum adjustment, there will be no further change in tone. Turn
the “ADJUST” knob counter-clockwise to decrease the high frequency emphasis. When you have reached the minimum
adjustment, there will be no further change in tone. After 10 seconds, the setting will be stored.
8
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
Using the Optional WIR TX9 DC Slave Emitter for Additional Coverage
For larger facilities, additional emitter panels can be used to increase the overall coverage area. In these cases, we recommend
using the WIR TX9 DC slave emitter in tandem with the WIR TX90 DC. The WIR TX90 DC can drive multiple WIR TX9 DC emitters
at one time. Each TX9 DC emitter will require its own power supply.
TO TX9 DC EMITTER
WIR TX9 DC EMITTER (REAR) WIR TX90 DC TRANSMITTER (REAR)
A621
BASEBAND
INPUT
BASEBAND
OUTPUT
Connecting a WIR TX9 Emitter to a WIR TX90 Transmitter
TO SECOND TX9 EMITTER TO TX9 EMITTER
BASEBAND
OUTPUT
BASEBAND
INPUT
WIR TX9 DC EMITTER #2 (REAR)
TO ADDITIONAL
EMITTERS
TO ADDITIONAL
EMITTERS
WIR TX9 DC EMITTER #2 (REAR) WIR TX90 DC TRANSMITTER (REAR)
A622
BASEBAND
OUTPUT
BASEBAND
INPUT
BASEBAND
OUTPUT
BASEBAND
INPUT
Chaining multiple WIR TX9 DC Emitters Together
To add a second WIR TX9 DC emitter panel to the WIR TX90 DC transmitter, repeat the process above (the WIR TX90 DC
transmitter has two baseband output jacks).
Note: The WIR TX9 DC emitter panels can be “chained” together if needed for unlimited coverage area. Each
WIR TX9 DC emitter will require its own power supply. See Figure 11 below.
9
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
Receiver Safety Information
HEARING SAFETY
CAUTION!
Williams Sound receivers are designed to amplify sounds to a high volume level which could potentially cause hearing damage if
used improperly. To protect your hearing and the hearing of others:
1. Make sure the volume is turned down before putting on the earphone or headphone before adjusting the volume to a comfortable
level.
2. Set the volume level at the minimum setting that you need to hear.
3. If you experience feedback (a squealing or howling sound), reduce the volume setting and move the microphone away from the
earphone or headphone.
4. Do not allow children or other unauthorized persons to have access to the receiver.
BATTERY SAFETY AND DISPOSAL
CAUTION!
Williams Sound receivers are supplied with disposable Alkaline batteries. Do not attempt to recharge alkaline batteries, which may
explode, release dangerous chemicals, cause burns, or other serious harm to the user or product.
PACEMAKER SAFETY
CAUTION!
1. Before using Williams Sound receivers with a pacemaker or other medical device, consult your physician or the manufacturer of
your pacemaker or other medical device.
2. If you have a pacemaker or other medical device, make sure that you are using the Williams Sound receiver in accordance with
safety guidelines established by your physician or the pacemaker manufacturer.
Recycling Instructions
Help Williams Sound protect the environment! Please take the time to dispose of your equipment properly.
Product Recycling Instructions:
Please do NOT dispose of your Williams Sound equipment in the household trash. Please take the equipment to an
electronics recycling center; OR, return the product to the factory for proper disposal.
Battery Recycling Instructions:
Please do NOT dispose of used batteries in the household trash. Please take the batteries to a retail or community
collection point for recycling.
10
WIR TX9 DC Emitter, WIR TX90 DC Transmitter
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