Sennheiser HMEC 46 Manual de usuario
HMEC 46
Bedienungsanleitung
Instructions for use
Notice d’emploi
Istruzioni per l’uso
Instrucciones para el uso
Gebruiksaanwijzing
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Book_51xxxx_1106_SP6.book Seite 2 Mittwoch, 13. Juni 2007 3:07 15
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.
yDuring flight operation, do not use the headset for
telephone calls.
yWith the NoiseGard™ active noise compensation
switched on, typical aircraft sounds (for example,
those from engines, propellers, warning alarms, etc.)
may sound different to you. Before operating any
aircraft, make sure that, with NoiseGard™ switched
on, you can hear and recognize these sounds. Set the
volume to safe levels that do not interfere with your
ability to hear informational sounds and warning
alarms.
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.
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2
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 humidity. Use only a slightly
damp cloth to clean the headset. For information on
how to clean the headset, contact your Sennheiser
agent.
Intended use of the headset
Intended use includes:
• having read these instructions especially the chapter
“Safety instructions”.
• use of the headset in jet aircraft and within the
operating conditions as described in these
instructions.
Improper use
Improper use means use of the headset other than as
described in these instructions or use under operating
conditions different from those described in these
instructions.
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3
The HMEC 46 headset
The HMEC 46 headset with NoiseGard™ active noise com-
pensation features dynamic, open headphones. The
noise-compensating condenser microphone ensures ex-
cellent speech transmission even in noisy environments.
Designed for use in aircraft cockpits.
Features
yNoiseGard™ active noise compensation reduces ambi-
ent noise by approx. 10 dB – consequently the radio
volume can be decreased
yExtremely lightweight
yExtremely comfortable to wear due to the patented
two-piece automatic headband and soft ear pads
yPeak level protection 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 replace
yWith NoiseGard™ switched off, the headset can be
used as a conventional headset
yPower supply for NoiseGard™ from aircraft DC power
supply system (on suitably equipped aircraft) or
batteries/rechargeable batteries
y“Auto shut-off” extends battery life
yETSO/TSO approval C57a/C58a
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4
Delivery includes
yHMEC 46 headset
yCable clip
yWind and pop screen
yInstructions for use
yCarry bag
yEASA 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.
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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.
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6
Flipping away one earcup
The headset features a “flip-away” earcup for single-
sided listening.
Adjusting the volume directly on the intercom
Connect the headset to the corresponding sockets of your
intercom. Adjust the volume directly on the intercom.
Hearing damage due to high volumes!
This headset is capable of producing high
sound pressure levels. Higher volumes or lon-
ger durations can damage your hearing!
Set the volume to a medium level. Make sure
that you can hear critical sounds such as war-
ning alarms.
CAUTION!
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Adjusting the microphone sensitivity
The microphone sensitivity has been factory pre-set to
40 mV/Pa as per RTCA DO-214. You can change the
microphone sensitivity by turning a small screwdriver in
the direction of the arrow.
+
–
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8
The operating controls of the HMEC 46
Operating control I
Volume controls
LED
NoiseGard™ ON/OFF
switch
Mono/stereo switch
BOOM switch L/R
3.5 mm jack socket
Battery compartment
2.5 mm jack socket
Headset with
operating
control I
Operating element
HMEC46-BV-K xxxxxxxx
HMEC 46-BV-CP x x x x x
HMEC 46-B-K x x x
HMEC 46-B-CP x x x
HMEC46-V-KP xxxxx
HMEC46-V-RP xxxxx
HMEC 46-V-CP x x x x
Book_51xxxx_1106_SP6.book Seite 8 Mittwoch, 13. Juni 2007 3:07 15
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