Azden IRB-10 User manual

User’s Guide
INFRARED WIRELESS SYSTEM
IRR-10 RECEIVER - IRB-10 BODY-PACK - IRH-10 HANDHELD
IRD-10 SENSOR
Azden Corporation, 147 New Hyde Park Road, Franklin Square, NY 11010
vox - 516.328.7500 • fax - 516.328.7506 • email - [email protected]
© 2000 Azden Corporation P1014-01Printed in USA

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IRB-10 (Top View)
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TABLE OF CONTENTS
iii
EXPLODEDVIEWS ..................................................................................................................i
INTRODUCTION......................................................................................................................ii
RECEIVERSETUP ..................................................................................................................1
Receiver front panel .................................................................................................................1
Receiver rear panel..................................................................................................................1
Mounting the receiver...............................................................................................................1
Powering the receiver...............................................................................................................1
THE IRB-10 BODY-PACK .......................................................................................................1
Batteries for the IRB-10............................................................................................................1
Frequency selection .................................................................................................................2
Power mode selection ..............................................................................................................2
Adjusting MIC gain ...................................................................................................................2
Using the IRB-10......................................................................................................................2
Attaching and using the lanyard with the IRE-10 emitter ..........................................................3
THE IRH-10 HANDHELD MIC .................................................................................................3
Batteries for the IRH-10............................................................................................................3
Frequency selection .................................................................................................................3
Using the IRH-10......................................................................................................................4
THE IRD-10 EXTERNAL SENSOR..........................................................................................4
Mounting bracket instruction ....................................................................................................4
TROUBLESHOOTING.............................................................................................................5
SPECIFICATIONS ...................................................................................................................6
5
TROUBLESHOOTING
The single most important thing to ALWAYS check when trouble arises are the batteries.
Make sure they are fresh and the POWER LED is glowing brightly.
SYMPTOM CAUSE
No POWERLED a. Receiver switch Is set to “OFF” - change to “ON”
b. External 12VAC power source is not connected or is mal-
functioning
c. Dead or very weak battery in body-pack or handheld
No audio from body-pack a. Make sure the volume on the receiver is turned up for the
appropriate channel and the body-pack is powered ON
b.Iftwobody-packs are beingused,makesure they aresetto
different frequency channels
c. If using an external mic, make sure it is plugged in to the
body-pack properly and the internal gain control has been
adjusted.
No audio from handheld mic a. Make sure the volume on the receiver is turned up for the
appropriate channel and the handheld mic is powered ON
b.Iftwohandheldmicsarebeingused,makesuretheyareset
to different frequency channels
Intermittent audio a. Makesurethere isa clearpathbetween theemitterand the
receiving sensor. Best results are obtained when the receiv-
ing sensors are mounted high - above everyone’s head
Limited working range a. Install extra external sensors
b. If using a body-pack, set the Power Mode to Hi
MICROPHONE SUGGESTIONS
In addition to the IRE-10 emitter’s built-in uni-directional microphone, any one of many fine
externalmicrophonescanbeused.Inthecaseofheadorcollarwornmicsis that it would be
possible to increase the gain (volume) without adding feedback noise. This is due to the
proximity of the mic element to the speaker’s mouth. Any of the following Azden micro-
phones will produce excellent results.
• EX-503 Omni-directional Lavalier • EX-505U Uni-directional Lavalier
• HS-12 Uni-directional Headset • HS-9 Omni-directional Headset
• CM-20 Collar-worn

2
II. Frequency Selection:
The IRB-10 can be set to transmit on either one of two preset frequencies. This is so
that two different speakers can talk at the same time in the same room. While it does
notmatterwhichfrequencyischosenforthebody-pack,twotransmitterscannotshare
thesame frequencyat the same time.To select the desired frequency (channel) slide
the switch (T) as shown on the sticker on the back of the battery door.
II. Power Mode Selection:
The IRB-10 has two Power Modes - Lo and Hi. These modes can be selected via a
switch (Q) inside the battery compartment, and affect two areas related to perfor-
mance- batterylife and areacoverage. Ifthe body-pack isswitched tothe Hi position
(Q-totheright) therangeis settomaximum(approximately1600square feet)while
the battery life is reduced to approximately 10 hours with Alkaline batteries. If, on the
otherhand,thebody-packisswitchedtoLotheoperatingrangeisreducedtoapproxi-
mately1200 squarefeet andthe batterylife increasesto approximately15 hourswith
Alkaline batteries. Experimentation is the only way to know which position is best for
yourroom. Wesuggest,however,thatit always bestto usethe Lo positionif possible
as that provides the most economical use.
III. Adjusting MIC Gain:
The MIC gain (volume) is adjustable to compensate for various microphone element
characteristics. The adjustment (R) is located in the battery compartment and can be
adjustedusingtheprovidedtool.Whilespeakingintoyourmicrophone,adjustthegain
(more gain-clockwise rotation, less gain-counterclockwise rotation) until the desired
volumelevelisachieved. Best resultsarenormallyachieved when thegaincontrolon
theIRB-10body-packandthevolumecontrolontheIRR-20receiver(DorF)areboth
at their mid-points.
IV. Using the IRB-10:
After inserting fresh batteries, the IRB-10 can be powered by sliding the ON/OFF
Switch (N) to the ON position. The Power LED (O) will glow when the IRB-10 is pow-
eredONaswilltheredLED on the frontpaneloftheIRR-20whichcorrespondstothe
chosenchannel.BesuretoslidethePowerSwitchtoOFFwhennotinusetopreserve
battery life. The Power LED on the mic will turn from green to red to indicate “Low
Battery”.
Theemitter(1)mustbepluggedintotheIRB-10(P)andeitherattached totheclothing
withtheclip(2)orwornaroundtheneckwiththelanyard(7)asdescribedinsectionV.
Theemitteracts as thetransmitterand,for bestresults,shouldbe worn insuchaway
as to have a clear path to the receiving sensor(s). 3
IV. Using the IRB-10 (continued):
While there is a built-in microphone in the emitter, for best results an external micro-
phone should be used. This microphone can be attached to the IRB-10 through the
3.5mm EXT. MIC jack (M). See page 5 for microphone suggestions.The internal mi-
crophone is disabled when an external mic is attached.
The IRB-10 can be attached to the belt or other clothing by way of the metal belt clip.
Itis suggestedthatthe body-packbe worninthe frontportion ofthe body toavoid the
possibility of damaging it.
V. Attaching and Using the Lanyard with the IRE-10 Emitter:
As described above, the emitter can be attached to clothing using the built-in clip (2).
Ifthatisnotconvenient,orifthebuilt-inauxiliarymicisbeingused,itisbesttousethe
includedlanyard.Toattach,insertthemetalclip(2)throughtheholes(3)onthelanyard’s
clear plastic slide (5).
To adjust the emitter, hold the end of the lanyard (4) and slide the emitter up or down
to the desired position. When using the built-in auxiliary mic it is best to slide the
emitter up as far as possible so that it is close to the mouth (6).
THE IRH-10 HANDHELD MIC (see illustration on page i)
I. Batteries for the IRH-10:
The IRH-10 uses two “AA” batteries or one AN-2A Ni-Cd for power. Batteries are
placed in the battery compartment after unscrewing and removing the bottom portion
of the mic handle (W). When using the AN-2A battery (U) carefully place a FULLY
CHARGEDbatteryinthecompartmentinthedirectionshownintheillustration(-tothe
top, + to the bottom). OBSERVE PROPER POLARITY! The IRH-10 can also use
either2“AA”sizeAlkaline,Ni-Cd orNi-MHbatteries.Whenusingthissizebattery,first
place the two batteries (Y) into the included adapter sleeve (X) and then place in the
compartment as shown. Again, OBSERVE PROPER POLARITY! Be sure to use
FRESH“AA”Alkalinebatteries,or,inthecaseof “AA”rechargeablebatteries,besure
that they are FULLY CHARGED before use. Battery life depends on (1) the type of
battery used, (2) the power mode chosen and other factors.
II. Frequency Selection:
The IRH-10 can be set to transmit on either one of two preset frequencies. This is so
that two different speakers can talk at the same time in the same room. While it does
not matter which frequency is chosen for the handheld mic, two transmitters cannot
sharethesamefrequencyatthesametime.Toselectthe desiredfrequency(channel)
slide the switch (V) as shown on the sticker on the side of the battery compartment.

41
RECEIVER SETUP (see illustration on page i)
I. Receiver Front Panel:
A. Power Switch - turns the receiver On and Off.
B. Power LED - indicates the power state of the receiver.
C. Receiving Sensor - internal receiving infrared sensor.
D. Volume - adjusts the output volume
II. Receiver Rear Panel:
E. 2-External Sensor Inputs (RCA connector) - Plugging external sensors in here
extends the receiver’s potential working distance.
F. OutputJack- connectsthereceivertoamixeroraudioamplifier/speakercombi-
nation (1/4 inch connector).
G. Power Input - plug inAC-AC adapter (BC-28i) to power receiver (12VAC-1.6A)
H. Channel indicator and serial number.
III. Mounting the Receiver:
As infrared operates “line-of-sight” and can be interrupted by any solid object, it is
strongly suggested that the receiver (or external sensors) be mounted or placed in a
location that puts the receiving sensors above the audience’s heads or any other ob-
stacles.
IV. Powering the Receiver:
The IRR-10 is powered by a BC-28iAC-AC power supply. Before turning the receiver
ON be sure to plug it into an active 110-120VAC wall socket and into the rear of the
IRR-10 (G). DO NOT USE any power supply except the BC-28i.
THE IRB-10 BODY-PACK (see illustration on page i)
I. Batteries for the IRB-10:
TheIRB-10uses two“AA”batteriesforpower.Theyareplacedinthebatterycompart-
ment(S).Afterslidingthebatterycompartmentdooroff,carefullyplaceFRESHbatter-
ies in the compartment in the directions shown on the sticker. OBSERVE PROPER
POLARITY!TheIRB-10canuseeitherAlkaline,Ni-CdorNi-MH batteries.Inthecase
ofrechargeablebatteries,besurethattheyareFULLYCHARGEDbeforeuse.Battery
life depends on (1) the type of battery used, (2) the power mode chosen and other
factors.
THE IRH-10 HANDHELD MIC (continued )
I. Using the IRH-10:
Afterinstalling freshbatteries and choosing a frequency, simply turn the mic/transmit-
teron by slidingthe ON/OFF switchup. The PowerLED abovetheswitch willglowas
will the red LED on the front panel of the IRR-20 which corresponds to the chosen
channel.BesuretoslidethePowerSwitchtoOFFwhennotinusetopreservebattery
life. The Power LED on the mic will turn from green to red to indicate “Low Battery”.
Bestperformanceisachievedwhenthemicisheldclosetothemouthandonespeaks
in a normal tone. The mic is designed to be held in the middle of the handle with the
ON/OFF switch facing you. This allows the emitters at the base and near the mic
element to operate at their peak.
THE IRD-10 EXTERNAL SENSOR
To increase the working range of the system, up to three external sensors can be
added.IRD-10sensorsarepoweredbythereceiverandcanbepluggedintothe“EXT.
SENSORINPUTS”(HandI)ontherearpanel.Pluggingintoinputs1and/or2(I)adds
to the built-in front sensor (C) and extends the working range by 33 feet in any direc-
tion. Plugging into input 3 (H) automatically disconnects the front panel sensor. This
way,if the frontpanelsensoris blocked (perhapsinasecured cabinet orcloset)itcan
be replaced. Follow the illustrations below to install the IRD-10 mounting plate and
sensor. Bend here
Mounting holes
Hold bracket in
place and bend
up to 90o
1st 2nd 3rd 4th
Mount with
2 screws
Bend up to
desired angle
Slide IRD-10
on bracket

Thankyou forselectingtheAzden“RED”infrared systemasyour wirelesssolution.Weare
confident that it will perform beyond your expectations. For over 40 years Azden Corpora-
tionhasbeencreatingtechnologicallyadvancedproducts.Bytakingadvantageofthelatest
in CAD design and SMT production techniques, Azden’s engineers are able to produce
products that exceed the published specifications and perform well beyond the warranty
period.
Azden“RED”representsabreakthroughinwireless.Insteadofthenormalradiowavesthat
other wireless systems use, Azden “RED” uses invisible light beams in the infrared range.
Through the use of infrared you will no longer be plagued by outside interference. “RED’s”
enhancedperformanceassuresyouofthefinestinaudioclarityandreliability.Thespecially
selected high-frequencies provide you with trouble free performance, even in fluorescently
lit rooms. Like all infrared, Azden “RED” will not operate correctly outside in the sunlight.
In the real world, the ability to use multiple systems in the same location without frequency
interference will prove to be a tremendous benefit to you. Using infrared means that the
audiogeneratedin yourroomstaysinyour room.Yourdiscussionscannotbeoverheardon
other systems in other rooms.
Designed by professionals - for professionals, Azden “RED” will provide you with years of
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INTRODUCTION
ii
SPECIFICATIONS
Due to constant improvements, specifiations are subject to change without notice.
6
S
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stem overall
Working range.............................................IRB-10 – 1600 ft2w/built-in sensor
IRH-10 – 2500 ft2w/built-in sensor
Frequency response...................................50Hz – 9kHz (±3dB) body pack (mic dependent)
50Hz – 5kHz (±3dB) auxiliary emitter mic
40Hz – 9kHz (±3dB) handheld
Dynamic range............................................>100dB
Operating temperature range.....................32o~ 113oF (0o~ 45oC)
Noise reduction...........................................2:1 log compander
IRR-10 1-channel receiver
Sub-carrier frequencies ..............................2.06MHz or 2.56MHz
Type ............................................................super heterodyne – crystal controlled
Modulation...................................................FM
Signal-to-Noise ...........................................>90dB
Image rejection ...........................................>40dB
Reception sensitivity...................................>25dBμV
Reception selectivity...................................±40kHz
A
udio output adjustment.............................line:+4dB max
A
udio output impedance.............................line:<1k ohms
Power requirement......................................12VAC @ 1.6A
Size .............................................................5.55" W x 5.1" D x 0.95" H (141 x 129.5 x 24mm)
Weight.........................................................11oz (311g)
IRB-10 – 2-channel body pack transmitter
Sub-carrier frequencies..............................2.06MHz & 2.56MHz switchable
Modulation...................................................FM
A
udio distortion...........................................< 1.0% (±40kHz deviation @ 1kHz)
Mic input impedance...................................2.2k ohms
Mic input jack ..............................................3.5mm
Built-in auxiliary mic....................................uni-directional electret
Mic gain adjustment....................................Max to –50dB
Battery type.................................................2-“AA” alkaline (2 x 1.5V)
2-“AA” rechargeable Ni-MH or Ni-Cd (2 x 1.2V)
Battery life (100mA drain)......................> 15 hours w/alkaline batteries – low power mode
(160mA drain)......................> 10 hours w/alkaline batteries – high power mode
Size .............................................................3.94" H x 2.52" W x 1.06" D (100 x 64 x27mm)
Weight.........................................................4.65oz (132g) – transmitter (w/alkaline batteries)
1.34oz (38g) – clip-on emitter
IRH-10 – 2-channel handheld transmitter
Sub-carrier frequencies..............................2.06MHz & 2.56MHz switchable
Modulation...................................................FM
A
udio distortion...........................................< 1.0% (±15kHz deviation @ 1kHz)
Microphone element type...........................uni-directional dynamic
Battery type.................................................2-“AA” alkaline (2 x 1.5V)
2-“AA” rechargeable Ni-MH or Ni-Cd (2 x 1.2V)
1- Azden AN-2A rechargeable Ni-Cd
Battery life (260mA drain)...........................> 10 hours w/alkaline batteries
Size .............................................................10.04" x 2.28" (255 x 58mm)
Weight.........................................................9.1oz (258g) w/alkaline batteries)
IRD-10 external sensor
Cable length................................................32.8' (10m)
Power..........................................................powered by receiver
Size .............................................................2" W x 3" W x 1" H (50.8 x 76.2 x 25.4mm)
Weight.........................................................4oz (113.4g)
Mounting included metal bracket