Sennheiser HME 26 User manual
Instruction manual
HME 26
Book_523982_200811_SP7.book Seite 4 Montag, 1. Dezember 2008 10:38 10
1
Safety instructions
yPlease read these instructions carefully and
completely before using the headset.
yMake these instructions easily accessible to all users
at all times.
yAlways include these instructions when passing the
headset on to third parties.
yThe headset is capable of producing sound pressure
levels exceeding 85 dB(A). In many countries
85 dB(A) is the maximum legally permissible level for
continuous noise exposure during the working day.
Exposure to sounds of higher volume levels or for
longer durations can permanently damage your
hearing!
yNever repair or attempt to repair a defective headset
yourself. Contact your Sennheiser agent or the
Sennheiser Service Department.
yOnly replace those parts of the headset whose
replacement is described in this manual. All other
parts of the headset must be replaced by your
Sennheiser agent.
yProtect the headset from wetness. Use only a slightly
damp cloth to clean the headset. For information on
how to clean the headset, contact your Sennheiser
agent.
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Intended use of the headset
Intended use includes:
• having read this instruction manual especially the
chapter “Safety instructions”.
• using the headset in jet aircraft and within the
operating conditions as described in this instruction
manual.
Improper use
Improper use means using the headset other than as
described in this instruction manual, or under operating
conditions which differ from those described herein.
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HME 26 headset
The HME 26 headset features dynamic, closed head-
phones. The noise-compensating condenser microphone
ensures excellent speech transmission even in noisy
environments. Designed for use in aircraft cockpits.
Features
yLightweight
yExtremely comfortable to wear due to the patented
two-piece automatic headband and soft ear pads
yPeak level protection (switchable) safeguards you
from volume peaks above 110 dB
y“Flip-away” headphone allows single-sided listening
yFlexible microphone boom, can be worn on either left
or right-hand side
yNoise-compensating condenser microphone ensures
excellent speech transmission
ySingle-sided cable, easy to exchange
yVolume control integrated in the cable (HME 26-V-K
only)
yETSO approval C57a/C58a
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Delivery includes
y1 HME 26 headset
y1 cable clip
y1 wind and pop screen
y1 instruction manual
y1 carry bag
y1 EASA Form 1
Operation
Turning the microphone boom
The microphone boom can be rotated. This allows the
headset to be worn with the microphone boom positioned
on either the left or right-hand side of the head.
Book_523982_200811_SP7.book Seite 4 Montag, 1. Dezember 2008 10:38 10
5
Putting on the headset
When putting on the headset, the patented two-piece
headband adjusts automatically.
Positioning the microphone
Bend the flexible microphone boom so that the micro-
phone is placed at the corner of the mouth. Maintain a
distance of approx. 2 cm between microphone and mouth.
Always use the supplied wind and pop screen.
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Flipping away one earcup
The headset features a “flip-away” earcup for single-
sided listening.
Adjusting the volume directly on the audio system
Connect the headset to the corresponding sockets of your
audio system. Adjust the volume directly on the audio
system.
Hearing damage due to high volumes!
This headset is capable of producing high
sound pressure levels. Higher volumes or
longer durations can damage your hearing!
Set the volume to a medium level. Make sure
that you can hear critical sounds such as
warning alarms.
CAUTION!
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Adjusting the volume via the slide volume controls
(HME 26-V-K only)
The two slide volume controls and allow you to
adjust the volume for the left and right channel
separately.
Changing the left and right audio channel
(HME 26-V-K only)
The position “R” or “L” of the BOOM switch
corresponds to the position of the microphone on the left
or right side of the mouth. When the microphone boom is
rotated to permit left or right side microphone
orientation, the BOOM switch allows you to correctly
assign the audio channels (L/R) to the appropriate
headphone sides. This enables the correct orientation of
the volume controls and any audio signals. To move the
BOOM switch, use a pointed tool.
Book_523982_200811_SP7.book Seite 7 Montag, 1. Dezember 2008 10:38 10
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Adjusting the microphone sensitivity
The microphone sensitivity has been factory pre-set to
80 mV/Pa as per RTCA DO-214. You can change the
microphone sensitivity by turning a small screwdriver in
the direction of the arrow.
Switching the peak level protection on and off
The peak level protection safeguards your ears from
volume peaks above 110 dB, which can be transmitted
via the audio system or radio equipment. The peak level
protection is factory-preset to “on”. You can switch the
peak level protection off by gently sliding the switch to
the upper position using a pointed tool.
+
–
Book_523982_200811_SP7.book Seite 8 Montag, 1. Dezember 2008 10:38 10
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