Otto NoizeBarrier Range SA User manual

NoizeBarrier®Range SA
Circumaural Headset
Technical Manual and Instructions for Use

2
IMPORTANT SAFETY WARNINGS
This NoizeBarrier®Range SA Headset reduces exposure to noise and loud sounds
that can damage hearing. Be sure to follow the instructions in this manual carefully.
Failure to follow these recommendations may severely reduce the amount of hearing
protection provided by the headset.
• The headset must be worn at all times in noisy environments to avoid hearing
loss/injury.
• Misuse of or failure to wear hearing protection when exposed to hazardous noise
may result in hearing loss and/or injury. If you experience symptoms of hearing
injury (ringing in ears, dulled hearing, headaches), contact your supervisor or a
medical professional immediately.
• The headset must be tted, adjusted and maintained in accordance with
manufacturer’s instructions to achieve the expected attenuation and hearing
protection. Failure to do so may result in hearing loss and/or injury.
• The NoizeBarrier®Range SA headset provides audio signal sound pressure level
limitation to limit the radio transmission audio signal to 82 dB effective to the ear.
• At approximately 30 minutes of battery life remaining, the headset will present
an audible tone to the user indicating that there is low battery life. This will
repeat every 2 minutes until the batteries are depleted.Talk-through powered by
two AAA batteries.
• The thermoplastic polyurethane foam ear seals on the NoizeBarrier®Range
SA may deteriorate with use and should be examined at frequent intervals for
damage, such as cracking and leakage. Replace as recommended on page 7.
• Using cloth hygiene covers over the foam ear seals may affect the acoustic
performance of the headset.
• The audibility of warning signals at a specic workplace may be impaired
while using the NoizeBarrier®Range SA headset if the situational awareness
functionality is not activated.
• The NoizeBarrier®Range SA headset may be adversely affected by certain
chemical substances. Further information should be sought from the
manufacturer.
• This earmuff is provided with electrical audio input. The wearer should check
correct operation before use. If distortion or failure is detected, the wearer should
refer to the manufacturer's advice.
• This headset is provided with level-dependent attenuation. The wearer should
check correct operation before use. If distortion or failure is detected, the wearer
should refer to the manufacturer's advice for maintenance and replacement of
the battery. See page 7.
• Warning: performance may deteriorate with battery usage. The typical period of
continuous use that can be expected from the earmuff battery is 100 hours.
• Warning: The output of the electrical audio circuit of this hearing protector may
exceed the daily limit sound level.
• Warning: The output of the level-dependent circuit of this hearing protector may
exceed the external sound level.

3
NoizeBarrier®Range SA Instructions for Use
Introduction
The NoizeBarrier®Range SA headset provides industry-leading hearing protection and
excellent situational awareness/talk-through capability for mission-critical operations.
Advanced talk-through sound suppression circuitry enhances the ability to hear low-
level sounds while protecting hearing.
Situational awareness functions are controlled by buttons on the left ear cup and
powered by two AAA batteries that provide approximately 100 hours of use if a lithium
battery is used.
An optional helmet-mount kit is available to change the headset from an over-the-head
headband conguration to a top or rear rail helmet-mounted conguration while in
the eld without the use of tools. For convenience, a spare battery for the situational
awareness functionality can be stored in each of the two rail-mount assemblies. See
pages 6 and 7.
This manual covers the following equipment:
Model Black Flat Dark Earth Olive Drab
NoizeBarrier®Range SA Headset V4-11072BK V4-11072OD V4-11072FD
NoizeBarrier®Range SA Helmet
Mounting Kit
C102359BK
C102365BK
C102359FD
C102365FD
C102359OD
C102365OD

a
b
e
d
c
g
h
f
Figure 1
4
Supplied Equipment
a) Headband
b) Adjustment frames
c) Audio cross-over cable
d) Ear cups
e) Comply™foam ear seals
f) Situational awareness
(talk-through) microphones
g) Battery compartment
and cover
h) Power/Volume control
NoizeBarrier®Range SA Headset
(Figure 1)
Optional Helmet Mounting
System for Helmets with Rails
(Figure 2)
• Swivel rail ear cup mount
• Helmet rail for accessories
• Rail mount frame
Helmet mounting instructions begin
on page 8.

5
Features of the NoizeBarrier®Range SA Headset
• Circumaural headset compatible with major helmet systems
• Talk-through electronics for situational awareness (SA)
• Limits volume to safe level and lowers sound oor without clipping
• Passive Attenuation: 23 dB NRR
• Amplied hearing of external communications
• Easy-to-access + and - buttons on left ear cup control the volume of the
situational awareness circuitry
• 5-step volume control adjusts +/- 12dB
• Situational Awareness/Talk-through is powered by two AAA batteries that
provide up to 100 hours if lithium batteries are used with no degradation of
performance over time.
• Automatic shut down after two hours of idle time
• Scalloped front ear cups reduce interference with rie stock
• Low-prole silicone headband can easily be worn under most helmet systems
• Proprietary Comply™thermoplastic polyurethane foam ear seals for secure and
comfortable t
• Ear seals snap in for easy eld replacement
• MIL-STD-810G compliant
• Immersion tested and fully sealed to IP68 standards for 1 meter/31 minutes
• USA Country of Origin. TAA, BAA, and Berry Amendment compliant
• Optional helmet mount interface for Team Wendy®and the ARC rail mount
system found on Ops-Core and other helmets.
• Each rail mount includes a battery holder for an extra battery
• Headset weight: 483 gm (19.57 oz.)
Situational Awareness Talk-Through Operation
The NoizeBarrier®Range SA Headset’s talk-through technology allows users to hear
normal sounds around them and maintain complete situational awareness (SA). At
the same time, sound suppression circuitry reduces dangerously loud noises over 82
dB to safe levels. The NoizeBarrier®Range SA is unique in that it does not shut down
situational awareness when loud noises, including impulse noises such as gunre, are
blocked. The headset will continue to transmit sounds at a safe volume.
When talk-through is not activated the headset works simply as a passive noise-
reducing headset.

Figure 3 Figure 4 Figure 6Figure 5
6
Operation
Install the Batteries to Power the Talk-Through Functionality
(Figure 3-6)
The NoizeBarrier®Range SA headset uses battery power to operate the situational
awareness/talk-through functions.
1. Identify the rubberized battery
covers on the ear cups.
2. With nger pressure, pry off the
battery cover on one ear cup
(Figure 3).
3. Install a AAA battery, aligning the
‘+’ and ‘-‘ symbols on the battery
with the markings in the battery
compartment.
4. To close the battery cover, start by
inserting one end ofthe cover into
the battery compartment (Figure 4).
5. Slightly bend the cover and insert the
other end into the opposite end of
the compartment (Figure 5).
6. Press the battery cover securely into
place over the chamber by applying
pressure from the middle and moving
outward to the ends (Figure 6).
7. Repeat the operation with the other
ear cup.
8. When replacing batteries, be sure
headset is off before opening battery
compartment. (See instructions on
page 7).
Wearing the Headset
(Note: If mounting the headset to the helmet with the optional Rail Mounting Kit,
please see instructions beginning on page X.)
1. Identify the left and right ear seals. The Power/Volume buttons are on the left
ear cup.
2. Place the headset over the head.
3. Adjust ear cup height by pulling or pushing on the cups until the ear seals are
securely positioned over the ears. Adjustment is accomplished by extending and
contracting the ear cup frames on either side of the ear cups while holding the
headband in place.
4. For effective sound protection, be sure that the ear seals are completely sealed
around the ear and obstacles such as hair, jewelry, or clothing are out of the way.

Figure 7
Figure 8 Figure 12Figure 11Figure 10Figure 9
Figure 7
Figure 8 Figure 12Figure 11Figure 10Figure 9
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Powering Up and Using the Talk-through SA Function (Figure 7)
1. Place the headset on your head.
2. Power up active talk-through by pressing and holding
either the + or – button on the left side of the headset
until a long tone sounds to indicate that talk-through
SA is active.
3. Volume + and – buttons adjust the talk-through SA
audio for ve volume levels. A tone will sound when
maximum or minimum volumes are reached.
4. To power down the unit, press and hold either the + or – button on the headset
until a different long tone sounds to indicate that talk-through SA is turned off.
Maintenance
Low Battery/Replacing Batteries
The NoizeBarrier®Range SA headset uses two AAA batteries to control situational
awareness (talk-through). At approximately 30 minutes of battery life remaining, the
headset will present an audible tone to the user indicating that there is low battery
life. This will repeat every 2 minutes until the batteries are depleted.
Replacing the Ear Seals (Figures 8-12)
The ear seals are mounted in a removable frame for easy replacement.
1. Remove the ear seal by sliding
ngers under the inside of the frame
and pulling it straight out with a rm
motion.
2. The foam liner inside the ear seal will
fall out. Replace it with a new one.
3. Position a new ear seal over the ear
cup. Align the TOP of the ear seal
with the TOP label inside the ear cup.
4. Press rmly to squeeze the ear seal
into the cup until it snaps into place.
Cleaning the Headset
• Use a soft cloth to remove dirt and debris from the headset.
• Use a damp soft cloth to wipe down the ear seals.
• Avoid full immersion of the NoizeBarrier®Range SA headset in liquid for cleaning.
Storage
When not in use, store the headset in temperatures between -40° and +71°C.

Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
8
Using the Headset with Optional
NoizeBarrier®Range SA Helmet Mount Kit
(Figures 13-17)
(Parts: C102359BK, C102359FD, C102359OD,
C102365BK, C102365FD, C102365OD)
The NoizeBarrier®Range SA headset can easily convert
from over-the-head use to be able to mount on helmet
rails with the use of the optional helmet mounting kit. The
helmet mount kit also includes a compartment for a spare
battery on each ear cup. Follow the steps below for Team
Wendy®and ARC rail mount system found on Ops-Core
and other helmets.
1. Locate the lip on the headband. Pull the smaller
section away from the headband. Pull the cross-over
cable from under the lip on the headband so it hangs
free. (Figure 13).
2. Holding an ear cup with one hand, with the other
hand rmly grasp the plastic adjustment frame where
it attaches to the ear cup. Pull the adjustment frame
off the pivot point on the ear cup, being careful not
to pull on the wire form portion of the adjustment
frame. The frame will unsnap from the retention ball
on the ear cup (Figure 14).
3. Repeat the operation on the frame on the other side
of the same ear cup.
4. Repeat steps 2 and 3 on the other ear cup
to fully remove the headband.
5. Position the rail mount over the ear cup
and snap the rail mount frames onto the
pivot points on the ear cups (Figure 15).
NOTE: The spare battery compartment on
the rail mount frames should be positioned
at the top of the frame.
6. Attach the other rail mount to the other
ear cup.
7. Slide the ear cup into the top or rear rails
by inserting the tab on the back side of
the swivel base into the rail guide. The
crossover cable is routed along the rear
and the boom microphone faces the front
of the helmet (Figure 16).
8. For Team Wendy®and ARC rail mount system found
on Ops-Core and other helmets, remove spare
battery from the compartment, remove the helmet
mount (Figure 17).

Figure 20
Figure 19
Figure 18
9
Positioning the Headset (Figures 18-20)
1. The rail system mount has two positions. The rst
position is outward (Figure 18). In this position the ear
cups sit slightly off the head for comfort. The second
position is inward to provide contact with the head
and a solid seal around the ears when in a noisy
environment.
2. To engage the ear cups against the head, press the
palms of the hands inward against the wire form
adjustment frames until they snap into the inward
position against the head (Figure 19).
This is best accomplished by pushing
against the bend in the wire frames—
pushing inward on the ear cups WILL
NOT engage the inward detent.
3. To release the headset to the outward
position, squeeze the wire forms
together (Figure 20). This will release
the adjustment frames to swing outward.
Troubleshooting
Problem Possible Causes Suggested Action
Headset will not power on
talk-through/situational
awareness
Depleted batteries Replace batteries
Batteries improperly
installed
Check polarity of batteries
Situational awareness
volume turned all the way
down
Press + button to increase
volume

10
Earmuffs
Frequency (HZ) 125 250 500 1000 2000 3150 4000 6300 8000
Mean Attenuation (dB) 17.9 19.0 24.4 29.2 31.5 36.8 39.2 37.4 36.2
Standard Deviation (dB) 2.7 1.9 2.2 1.8 2.0 3.0 2.7 2.9 3.5
NRR=23 dB; Headband Force=2.3 lbs. PER ANSI S3.19-1974
TEST REPORT ID: Q5343A, Michael and Associates, Inc.
Important: NRR is not attenuation, and the labeled NRR for most earmuffs does not represent
typical performance. While the labeled NRR is 23 dB, the typical user can expect to obtain a
higher level of attenuation across frequencies when the ear muffs are used as directed and the
device is off.
NRR (Noise Reduction Rating)

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SNR (Single Number Rating)
Classification:
NoizeBarrier®Range SA EN 352-1: 2002
Frequency (HZ) 125 250 500 1000 2000 4000 8000 SNR = 29 dB
Mean Attenuation (dB) 17.9 19.2 25.7 29.7 31.1 37.5 37.8 H= 31 dB
Standard Deviation (dB) 2.8 1.9 2.2 1.7 2.7 3.3 2.9 M= 26 dB
Assumed Protection Value (dB) 15.1 17.3 23.5 27.9 28.4 34.3 34.9 L = 20 dB
EN 352-4: 2001 +A1: 2005
Criterion levels H = 114.8 dBA M = 108.3 dBA L = 98.9 dBA
Sound pressure level of external noise for which sound pressure level under the
earmuff rst exceeds 85 dBA
EN 352-6:2002
Electrical input for which the mean + one standard deviation of A-weighted diffuse-
eld related sound = 119.1 mV pressure level is equal 82 dB
The European Union testing was conducted by Michael and Associates, Inc. Report
Q5797A, Q6031A and Q6033A.
This product is in compliance with EN 352-1:2002, EN 352-4:2001, EN 352-6:2002
and 2016/425.
Notied Body responsible for EU type examination: SATRA Technology Europe, Ltd.,
Bracetown Business Park, Clonee, Co. Meath, D15 YN2P, Ireland
(Notied Body No. 2777)
Declaration of Conformity available at www.otto-comm.com

12
Information on Disposal of Old Electrical and Electronic Equipment (applicable for EU countries that have
adopted separate waste collection systems).
Products with the symbol (crossed-out wheeled bin) cannot be disposed as household waste.
Old electrical and electronic equipment should be recycled at a facility capable of handling
these items and their waste byproducts. Contact your local authority for details in locating
a recycle facility nearest to you. Proper recycling and waste disposal will help conserve
resources while still preventing detrimental effects on our health and the environment.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California
to cause cancer & other reproductive harm. For more information go to http://www.P65Warnings.ca.gov
10 West Main Street
Carpentersville, IL U.S.A. 60110
Toll Free Phone: 888-234-OTTO (6886)
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
www.otto-comm.com
For questions or more information, please contact:
804464 | 09/2020
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Spare Parts and Accessories
Description Part Number
Ops-Core Helmet Mounting Kit - Flat Dark Earth C102359FD
Ops-Core Helmet Mounting Kit – Olive Drab C102359OD
Ops-Core Helmet Mounting Kit – Black C102359BK
Team Wendy®Helmet Mounting Kit - Flat Dark Earth C102365FD
Team Wendy®Helmet Mounting Kit – Olive Drab C102365OD
Team Wendy®Helmet Mounting Kit - Black C102365BK
Headset bag with drawstring C760607
Soft Comply™foam snap-in ear seal, standard size C807485
Soft Comply™foam snap-in ear seal, thin size C807504
Over-The-Head headband assembly C102574