Sennheiser 502399 Manual de usuario

Instruction manual

HMEC 26

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.

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 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.

The HMEC 26 headset

The HMEC 26 headset with NoiseGard™ active noise

compensation features dynamic, closed 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 up to 18 dB – consequently the radio

volume can be decreased

yLightweight

yExtremely comfortable to wear due to the patented

two-piece automatic headband and soft earpads

yPeak level protection (cannot be switched off)

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

yTalkThrough function (HMEC 26-T only)

yETSO approval C57a/C58a

Delivery includes

y1 HMEC 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.

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.

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!

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.

–

The operating controls of the HMEC 26

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



HMEC26-BV-K xxxxxxxx

HMEC26-BV-KP xxxxxxxx

HMEC 26-BV-CP x x x x x

HMEC 26-B-K x x x

HMEC 26-B-CP x x x

HMEC26-V-KP xxxxx

HMEC26-V-RP xxxxx

HMEC 26-V-CP x x x x

HMEC26-V-KX xxxxx





























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