Instruction/ maintenance manual of the product HMEC 460 Sennheiser
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Instruction s for use HMEC 460.
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1 Contents Safety instructions . ............... .............. .............. .............. .............. .............. ................. .... ........ ... 3 The HMEC 460 headset .............. .............. ............... .............. .......
2 Care and maintenance .................. .............. .............. ................. .............. .............. ............... .. .. 23 Cleaning the headset .................................... ..................... .................... .....
3 Safety instructions y Please read these instructio ns carefully and complet ely before using the headset. y Make these instructions easily ac cessible to all users at all times. y Always include these inst ructions when passing the headse t on to third parties.
4 y Protect the headset fr om humidity. Only us e a slightly damp cloth t o clean the headset. For information on how to clean th e headset, contact your Sennhei ser agent. Intended use of the headset Intended use includes: y having read and understood these i nstructions, especially the chapter “Safety instructions”.
5 The HMEC 460 headset The HMEC 460 is a pilot headset with clos ed ear protector headphones and NoiseGard active noise compensation fo r use in helicopters, propel ler and turboprop a ircraft.
6 y Adaption to the aircraf t intercom system vi a mono/stereo swi tch y Separate volume control for lef t and right channel y Boom switch for microphone boom lef t /right posi tion y With the NoiseGard active no ise compensation switched o ff, the headset can be used as a conventional headset y “Audio-In” signals from the 3.
7 Delivery includes 1H M E C 4 6 0 h e a d s e t 1 audio cable (1.4 m ) with 2 x 2.5 mm ster eo jac k for compatib le mobile telephones 1 audio cable (1 .
8 Overview of operating elements Headset Operating control Headband padding Quick-fixing device Microphone Earpads Headband 5.25 mm jack pl ug (PJ-068 equivalent) XLR-3 plug ¼” (6.
9 Connecting cable 1 5.25 mm jack plug (PJ-068 equivalent) for connecting the microphone 1¼ ” ( 6 . 3 5 m m ) j a c k p l u g for connecting the headphones 1X L R - 3 p l u g for connec.
10 Powering the NoiseGard active noise compensation There are three options for powering th e NoiseGard active noise compensation: 1. Connection to the on-board DC power supply system (12–35 V DC ) 2. Connection to the cigarette ligth er socket (12 –35 V DC ) via an adapter cable (optional accessory) 3.
11 Connecting the headset to the on -board DC power supply system T o power the NoiseGard electronics, you can connect the headset to the on-board DC power supply system (12–35 V DC ).
12 T o connect the headset via an adapter cable: 왘 Connect the XLR-3 plug of the headset to the XLR-3 socket of the adapter cable. 왘 Connect the plug or right-angled jack plug of the adapter cable to the ci garette lighter socket.
13 Activating the “auto shut-off” function The battery-saving “a uto shut-off” function automati cally switches the NoiseGard electronics off when the headset is disconnect ed from the intercom or when the aircraft avionics are switched off. The headset is delivered ex-works with the “auto shut-off” function deactivated .
14 Note: The latest information on cell phone compatib ility can be down loaded from the HMEC 460 product pa ge at www.sennheiser. com. 왘 Connect the audio cable to the 2.5 mm jack socket on the operating control and to the correspondi ng 2.5 mm jack socket on your mobile teleph one.
15 Connecting an addi tional audio player The operating control ha s a 3.5 mm jack so cket , allowing you to connect an additional audio player. The required audi o cable fitted with two 3.5 mm jack plugs is included. 왘 Connect the audio c able to the 3.
16 Adjusting the headset Adjusting the headband For good noise attenuation an d best possible comfort, the headband has to be adjusted to properly fit your head: Note: Make sure not to squeeze any connecti ng cable when adju sting the headband. Squeezing can damage the connecting cables.
17 Rotating the microphone boom The microp hone boom can be worn on either side of the mout h. 왘 Loosen the quick-fixi ng device . 왘 Rotate the microphone boom by 180 °. 왘 Tighten the quick-fixing device . Changing the lef t and right stereo channel The operating control is fitted with a boom switch .
18 Positioning the microphone towards the corner of the mouth The microphone boom is flexible, so you can position it individual ly. 왘 B e n d t h e m i c r o p h o n e b o o m s o t h a t t h e m i c r o p h o n e i s p l a c e d a t t h e c o r n e r o f t h e mouth.
19 Using the headset Switching between mono and stereo mode The operating control is fitted with a mono /stereo switch, which allows you to switch between mono and st ereo mode to sui t th e aircraft radio / audio pan el / intercom installatio n.
20 – Setting the mono/stereo switch to “ ” ( m o no ) w he n th e a ir c ra ft p a n el i s wi r e d a s a stereo system will result in you hearing only the lef t channe l of audio from the panel in both si des of the headse t.
21 Switching NoiseGard on/off 왘 Set the NoiseGard ON/OFF swit ch to the desired position: “ ON ” or “ OFF ”. With the NoiseGard active noise compensation s w it c he d o ff , th e h ea d se t c an b e us e d a s a conventional headset. Attaching the cable clip The headphone cable can be fixed by means of the cable clip.
22 Folding up the headphones For easy and space-saving transportation, the ea rcups can be folded up and tucked between the headband. To fold up th e headphones: 왘 Grasp both earcups. 왘 Fold up the earcups and tuck them between the headband. To unfold t he headphones: 왘 Grasp both earcups.
23 Care and maintenance Cleaning the headset 왘 Use a sof t, slightly damp cloth to clean the hea dset from time to time. 왘 If the headset is very dirty, use a cloth dampened with mild, soapy water. Replacing the wind shield To replace a damaged wind shield , proceed as follows: 왘 Carefully pu ll the wind shi eld from the microphone.
24 Replacing the earpads T o rep lace a damaged earpad, proceed as follows: 왘 Hold the headset on the outside of the earcup and on the headband . 왘 Grasp the edge of the earpad behind the earcup as show n and peel it up and away from the earcup.
25 If a problem occurs... Problem Possib le cau se Possible solution No active noise compensation The NoiseGard electronics are switched off. Set the NoiseGard ON/OFF switch to “ ON ”. The batteries/ rechargeable batteries are low. Check to see if the LED is lit yellow.
26 If a problem occurs that is no t listed in the above table or if the problem cannot be solved with the proposed solutions, please contact your local Sennheiser agent for assistance. Active noise compensation but very low volume communication The volume is set too low.
27 Accessories/spare parts Product name Product description Cat. No. – Gel earpads 093807 – Spare earpads 517607 ACX-1 Adapter cable for po wering one headset ACX-1 ACX-11 Adapter cable for po wer.
28 V aluable information on NoiseGard The NoiseGard principle One of the greatest st ress factors tod ay is noise. Rese arch has shown that no ise affects the nervous system, and can cause tiredness, poor concentration, irrit ability and tension. Of even greater concern is the pe rmanent damage to hearing that can result from noise at high levels.
29 NoiseGard active noise compensation is achi eved by generating a si gnal identical in sound pressure level but exactly reversed in phase to the noise signal, the effect being that the out-of-phase signal ca ncels most of the noise signal.
30 Specifications Headphones Microphone incl. preamplifier T ransducer principle dynamic Ear coupling circumaural, closed Frequency response 20–20,000 Hz Nominal impedance acti ve/passive 400/300 Ω , mono 600/600 Ω , stereo Attenuation (active/passive) > 25–40 dB Contact pressure approx.
31 General data Connecting cable 1.5 m, single-sided We i gh t w i t h o u t c a b l e 3 7 0 g Power supply for NoiseGard 12–35 V DC Fuse 1.5 A fuse Connectors 5.
32 Connector assignment XLR-3 plug 1 Power supply for NoiseGard (12–35 V DC+ ) 2 Ground 3 Not assigned! 5.25 mm jack plug (P J-068 equivalent) 1 Not assigned! 2 Microphone High 3 Microphone Low ¼” (6.
33 Manufacturer Declarations Wa r r a n t y The original Sennheiser product you have purchased is covered by a warranty of 10 years. The warranty period begins on the date of purch ase of brand new, unused products by the first end use r. Please retain your sales receipt (or your warranty certificate) as proof of purchase.
34 y any modification of S ennheiser products effected by you or a third party, unless Sennheiser has given its prior written consent to the nature and extent of the modification y faults due to force.
Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com Printed in Germany Publ.
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If you already are a holder of Sennheiser HMEC 460, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sennheiser HMEC 460.
However, one of the most important roles played by the user manual is to help in solving problems with Sennheiser HMEC 460. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sennheiser HMEC 460 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
