Sennheiser HMEC 460 User Manual

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Sennheiser HMEC 460 User Manual

HMEC 460

Instructions for use

Contents

 

Safety instructions ......................................................................................................................

3

The HMEC 460 headset ...............................................................................................................

5

Delivery includes ..........................................................................................................................

7

Overview of operating elements ...............................................................................................

8

Preparing the headset for use ...................................................................................................

9

Connecting the headphones and the microphone ..............................................................................

9

Powering the NoiseGard active noise compensation ........................................................................

10

Activating the “auto shut-off” function .............................................................................................

13

Connecting a mobile telephone .............................................................................................................

13

Connecting an additional audio player ................................................................................................

15

Adjusting the headset ............................................................................................................................

16

Using the headset ......................................................................................................................

19

Switching between mono and stereo mode .......................................................................................

19

Adjusting the volume ..............................................................................................................................

20

Switching NoiseGard on/off ...................................................................................................................

21

Attaching the cable clip ..........................................................................................................................

21

Folding up the headphones ...................................................................................................................

22

1

Care and maintenance ..............................................................................................................

23

Cleaning the headset ...............................................................................................................................

23

Replacing the wind shield .......................................................................................................................

23

Replacing the earpads .............................................................................................................................

24

Replacing the headband padding .........................................................................................................

24

If a problem occurs... .................................................................................................................

25

Accessories/spare parts ...........................................................................................................

27

Valuable information on NoiseGard .......................................................................................

28

Specifications ..............................................................................................................................

30

Headphones ...............................................................................................................................................

30

Microphone incl. preamplifier ................................................................................................................

30

General data ..............................................................................................................................................

31

Connector assignment ............................................................................................................................

32

Manufacturer Declarations ......................................................................................................

33

Thank you for choosing Sennheiser!

We have designed this product to give you reliable operation over many years. Over 60 years of accumulated expertise in the design and manufacture of high-quality electro-acoustic equipment have made Sennheiser a world-leading company in this field.

Please take a few moments to read these instructions carefully, as we want you to enjoy your new Sennheiser products quickly and to the fullest.

2

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 exceeding 85 dB(A). 85 dB(A) is the sound pressure corresponding to the maximum permissible volume which is by law (in some countries) allowed to affect your hearing for the duration of a working day. Higher volumes or longer durations can damage your hearing!

yNever repair or attempt to repair a defective headset yourself. Contact your Sennheiser agent or the Sennheiser Service Department.

yOnly replace parts of the headset whose replacement is described in this manual. All other parts of the headset must be replaced by your Sennheiser agent.

3

yProtect the headset from humidity. Only use 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:

yhaving read and understood these instructions, especially the chapter “Safety instructions”.

yusing the headset in helicopters, propeller and turboprop aircraft and within the operating conditions and limitations described in these instructions.

Improper use

“Improper use” means using the headset other than as described in these instructions, or under operating conditions which differ from those described herein.

4

The HMEC 460 headset

The HMEC 460 is a pilot headset with closed ear protector headphones and NoiseGard active noise compensation for use in helicopters, propeller and turboprop aircraft.

The headset has the following features:

yFlexible microphone boom with quick-fixing device

yLightweight

yComfortable leatherette earpads (replaceable)

yPadded headband

yHeadband padding can be buttoned

ySingle-sided connecting cable

yFolding mechanism for space-saving transport

yStylish silver design

yGood attenuation of ambient noise due to NoiseGard active noise compensation

yClear communications even in the noisiest environment due to NoiseGard active noise compensation and MKE 45-1 pre-polarized condenser microphone with adjustable sensitivity

yIncreased speech intelligibility due to a frequency response optimized in the 500 Hz to 5 kHz region

5

yAdaption to the aircraft intercom system via mono/stereo switch

ySeparate volume control for left and right channel

yBoom switch for microphone boom left/right position

yWith the NoiseGard active noise compensation switched off, the headset can be used as a conventional headset

y“Audio-In” signals from the 3.5 mm jack socket mute automatically in the presence of intercom and/or RT traffic

y2.5 mm jack socket for connecting a mobile telephone

y3.5 mm jack socket for connecting a portable audio player

yThree options for powering NoiseGard

(on-board power supply system, cigarette lighter socket or batteries)

yFail safe operation in case of power failure

y10-year warranty and “Made in Germany“

6

Delivery includes

1HMEC 460 headset

1audio cable (1.4 m) with 2 x 2.5 mm stereo jack for compatible mobile telephones

1audio cable (1.4 m) with 2 x 3.5 mm stereo jack for portable audio players

1padded carry and storage bag for headset and accessories

1wind shield for microphone

1MZQ 2002-1 cable clip

1instruction manual

7

Overview of operating elements

Headset

Headband padding

Quick-fixing device

Microphone

Operating control

5.25 mm jack plug (PJ-068 equivalent)

XLR-3 plug

¼” (6.35 mm) jack plug

2.5 mm jack socket

3.5 mm jack socket

Earpads

Headband

Boom switch

Mono/stereo switch

ON/OFF switch

LED for operation and battery status indication

Separate slide volume controls for left and right channel

8

Connecting cable

1 5.25 mm jack plug (PJ-068 equivalent) for connecting the microphone 1 ¼” (6.35 mm) jack plug for connecting the headphones

1 XLR-3 plug for connecting the power supply for the NoiseGard electronics

Preparing the headset for use

Connecting the headphones and the microphone

To connect the headset to the intercom:

Connect the jack plugs and to the corresponding jack sockets of your intercom.

9

Powering the NoiseGard active noise compensation

There are three options for powering the NoiseGard active noise compensation:

1.Connection to the on-board DC power supply system (12–35 VDC)

2.Connection to the cigarette ligther socket (12–35 VDC) via an adapter cable (optional accessory)

3.Power supply via two AA batteries (not included) inserted in the operating control

The supply voltage for the NoiseGard system is processed by the in-line electronics in the connecting cable.

CAUTION! Danger of short circuit!

In the unlikely case of a fault, a short circuit could occur.

Before switching NoiseGard on, ensure that the aircraft electrical circuit which supplies the headset from the on-board DC power supply system is protected by a 1 A fuse.

10

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