Sennheiser HMEC 460 User Manual

Instructions for use

HMEC 460

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

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.

Safety instructions

y Please read these instructions carefully and completely before using the headset. y Make these instructions easily accessible to all users at all times. y Always include these instructions when passing the headset on to third parties. y During flight operation, do not use the headset for telephone calls. y With 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.

y The 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!

y Never repair or attempt to repair a defective headset yourself. Contact your

Sennheiser agent or the Sennheiser Service Department.

y Only 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.

y Protect 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:

y having read and understood these instructions, especially the chapter “Safety

instructions”.

y using 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.

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:

y Flexible microphone boom with quick-fixing device y Lightweight y Comfortable leatherette earpads (replaceable) y Padded headband y Headband padding can be buttoned y Single-sided connecting cable y Folding mechanism for space-saving transport y Stylish silver design y Good attenuation of ambient noise due to NoiseGard active noise compensation y Clear communications even in the noisiest environment due to NoiseGard active noise

compensation and MKE 45-1 pre-polarized condenser microphone with adjustable sensitivity

y Increased speech intelligibility due to a frequency response optimized in the 500 Hz

to 5 kHz region

y Adaption to the aircraft intercom system via mono/stereo switch y Separate volume control for left and right channel y Boom switch for microphone boom left/right position y With 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

y 2.5 mm jack socket for connecting a mobile telephone y 3.5 mm jack socket for connecting a portable audio player y Three options for powering NoiseGard

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

y Fail safe operation in case of power failure y 10-year warranty and “Made in Germany“

Delivery includes

1HMEC460 headset

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

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

1 padded carry and storage bag for headset and accessories

1 wind shield for microphone

1 MZQ 2002-1 cable clip

1 instruction manual

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

Connecting cable



1 5.25 mm jack plug (PJ-068 equivalent)  for connecting the microphone

1¼” (6.35 mm) jack plug for connecting the headphones

1XLR-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:

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

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 V

2. Connection to the cigarette ligther socket (12–35 V

) 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.

왘 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.

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