HMEC 46
Bedienungsanleitung Instructions for use Notice d’emploi Istruzioni per l’uso Instrucciones para el uso Gebruiksaanwijzing
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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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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The HMEC 46 headset
The HMEC 46 headset with NoiseGard™ active noise compensation features dynamic, open headphones. The noise-compensating condenser microphone ensures excellent speech transmission even in noisy environments. Designed for use in aircraft cockpits.
Features
yNoiseGard™ active noise compensation reduces ambient 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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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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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 microphone is placed at the corner of the mouth. Maintain a distance of approx. 2 cm between microphone and mouth.
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Flipping away one earcup
The headset features a “flip-away” earcup for singlesided 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.
CAUTION! 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.
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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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