Sennheiser HME 26 User manual

Instruction manual

HME 26

Book_523982_200811_SP7.book Seite 4 Montag, 1. Dezember 2008 10:38 10

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.

Book_523982_200811_SP7.book Seite 1 Montag, 1. Dezember 2008 10:38 10

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.

Book_523982_200811_SP7.book Seite 2 Montag, 1. Dezember 2008 10:38 10

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

Book_523982_200811_SP7.book Seite 3 Montag, 1. Dezember 2008 10:38 10

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

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.

Book_523982_200811_SP7.book Seite 5 Montag, 1. Dezember 2008 10:38 10

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!

Book_523982_200811_SP7.book Seite 6 Montag, 1. Dezember 2008 10:38 10

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

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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