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Related Manuals for Sennheiser HMEC 460
Summary of Contents for Sennheiser HMEC 460
- Page 1 HMEC 460 Instructions for use...
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Page 3: Table Of Contents
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”... - Page 4 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...
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Page 5: Safety Instructions
Never repair or attempt to repair a defective headset yourself. Contact your Sennheiser agent or the Sennheiser Service Department. 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. - Page 6 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. having read and understood these instructions, especially the chapter “Safety instructions”.
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Page 7: The Hmec 460 Headset
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: Flexible microphone boom with quick-fixing device... - Page 8 Adaption to the aircraft intercom system via mono/stereo switch Separate volume control for left and right channel Boom switch for microphone boom left/right position With the NoiseGard active noise compensation switched off, the headset can be used as a conventional headset “Audio-In”...
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Page 9: Delivery Includes
Delivery includes 1 HMEC 460 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... -
Page 10: Overview Of Operating Elements
Overview of operating elements Headset Operating control Headband padding Earpads Quick-fixing device Headband Microphone 5.25 mm jack plug Boom switch (PJ-068 equivalent) Mono/stereo switch XLR-3 plug ON/OFF switch ¼” (6.35 mm) jack plug LED for operation and 2.5 mm jack socket battery status indication 3.5 mm jack socket Separate slide volume controls for... -
Page 11: Preparing The Headset For Use
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 to the corresponding jack sockets of your intercom. -
Page 12: Powering The Noisegard Active Noise Compensation
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 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. - Page 13 (12–35 V Connecting the headset to a cigarette lighter socket (12–35 V Sennheiser offers special adapter cables with XLR-3 socket for connecting the NoiseGard electronics of the headset to the on-board DC power supply via the cigarette lighter...
- Page 14 To connect the headset via an adapter cable: Powering the NoiseGard electronics via two (rechargeable) batteries With NoiseGard switched on (see “Switching NoiseGard on/off” on page 21), the LED provides information on the remaining battery/rechargeable battery capacity. If the battery voltage is too low, NoiseGard automatically switches off to protect the batteries from total discharge and leakage.
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Page 15: Activating The "Auto Shut-Off" Function
Close the cover of the battery compartment Connecting a mobile telephone The 2.5 mm jack socket allows you to connect a mobile telephone. A suitable adapter for your mobile telephone with 2.5 mm jack socket is available from your Sennheiser agent. on the operating control. - Page 16 During flight operation, do not use the headset for telephone calls! Note: The latest information on cell phone compatibility can be downloaded from the HMEC 460 product page at www.sennheiser.com. Connect the audio cable to the 2.5 mm jack socket the corresponding 2.5 mm jack socket on your mobile telephone.
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Page 17: Connecting An Additional Audio Player
Connecting an additional audio player The operating control has a 3.5 mm jack socket audio player. The required audio cable fitted with two 3.5 mm jack plugs is included. Danger of accident due to reduced attention! DANGER! Listening to music or operating an audio device limits your attention and may cause accidents. -
Page 18: Adjusting The Headset
Adjusting the headset Adjusting the headband For good noise attenuation and best possible comfort, the headband has to be adjusted to properly fit your head: Note: Make sure not to squeeze any connecting cable when adjusting the headband. Squeezing can damage the connecting cables. Wear the headset so that the headband runs over the top of your head. - Page 19 Rotating the microphone boom The microphone boom can be worn on either side of the mouth. Loosen the quick-fixing device » Rotate the microphone boom Tighten the quick-fixing device Changing the left and right stereo channel The operating control is fitted with a boom switch boom switch corresponds to the position of the microphone on the left or right side of the mouth.
- Page 20 Positioning the microphone towards the corner of the mouth The microphone boom is flexible, so you can position it individually. Bend the microphone boom so that the microphone is placed at the corner of the mouth. Maintain a distance of approx. 2 cm between microphone and mouth.
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Page 21: Using The Headset
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 stereo mode to suit the aircraft radio / audio panel / intercom installation. If the audio panel, intercom system or radio installation in your aircraft is mono: Set the mono/stereo switch on the operating control to position “... -
Page 22: Adjusting The Volume
Adjusting the volume The operating control is fitted with two slide volume controls adjust the volume for the left and right channel separately. – Setting the mono/stereo switch to “ ” (mono) when the aircraft panel is wired as a stereo system will result in you hearing only the left channel of audio from the panel in both sides of the headset. -
Page 23: Switching Noisegard On/Off
Switching NoiseGard on/off Set the NoiseGard ON/OFF switch ON: NoiseGard is switched on. The LED (see page 12) or power supply via the on-board DC power supply system. OFF: NoiseGard is switched off. The LED With the NoiseGard active noise compensation switched off, the headset can be used as a conventional headset. -
Page 24: Folding Up The Headphones
Folding up the headphones For easy and space-saving transportation, the earcups can be folded up and tucked between the headband. To fold up the headphones: To unfold the headphones: Grasp both earcups. Fold up the earcups and tuck them between the headband. -
Page 25: Care And Maintenance
Care and maintenance Cleaning the headset Danger of short-circuit due to the ingress of water! CAUTION! Water entering the housing of the headset can cause a short-circuit and damage the electronics. Only use a soft, slightly damp cloth to clean the headset. Do not use any solvents or cleansing agents. -
Page 26: Replacing The Earpads
Replacing the earpads To replace a damaged earpad, proceed as follows: Replacing the headband padding To replace a damaged headband padding, proceed as follows: Hold the headset on the outside of the earcup and on the headband Grasp the edge of the earpad behind the earcup as shown and peel it up and away from the earcup. -
Page 27: If A Problem Occurs
If a problem occurs... Problem Possible cause No active noise The NoiseGard compensation electronics are switched off. The batteries/ rechargeable batteries are low. The XLR-3 plug is not connected to the power source. The aircraft fuse is defective. Possible solution Set the NoiseGard ON/OFF switch to “ON”. - Page 28 If a problem occurs that is not listed in the above table or if the problem cannot be solved with the proposed solutions, please contact your local Sennheiser agent for assistance. Problem Possible cause Active noise The volume is set too compensation but low.
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Page 29: Accessories/Spare Parts
Accessories/spare parts Product name Product description – Gel earpads – Spare earpads ACX-1 Adapter cable for powering one headset ACX-11 Adapter cable for powering two headsets ACX-2 Adapter cable with a right-angled jack plug for powering one headset ACX-22 Adapter cable with a right-angled jack plug for powering two headsets MZW 45 Wind and pop shield MZQ 2002-1... -
Page 30: Valuable Information On Noisegard
High frequencies are reduced considerably, but low frequency wind and engine noise, the most prominent noise in many of today's aircraft, is attenuated very little. In response to these problems, Sennheiser has developed an active noise compensation system – NoiseGard – which, combined with a high-quality passive hearing protector, provides consistent noise attenuation over the entire audio range. - Page 31 NoiseGard active noise compensation is achieved by generating a signal identical in sound pressure level but exactly reversed in phase to the noise signal, the effect being that the out-of-phase signal cancels most of the noise signal. Active noise compensation is accomplished in the following manner: Each earcup includes a microphone, a feedback control circuit, and a transducer to reproduce both the communication and the noise cancelling signal.
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Page 32: Specifications
Specifications Headphones Transducer principle Ear coupling Frequency response Nominal impedance active/passive 400/300 Ω, mono Attenuation (active/passive) Contact pressure Microphone incl. preamplifier Transducer principle Frequency response Max. sound pressure level Min. terminating impedance Output voltage Supply voltage dynamic circumaural, closed 20–20,000 Hz 600/600 Ω, stereo... -
Page 33: General Data
12–35 V Fuse 1.5 A fuse Connectors 5.25 mm jack plug (PJ-068 equivalent) for microphone, ¼” (6.35 mm) jack plug for headphones, XLR-3 plug for NoiseGard Controls mono/stereo switch on/off switch for NoiseGard LED for operation and battery status indicator... -
Page 34: Connector Assignment
Connector assignment XLR-3 plug 1 Power supply for NoiseGard (12–35 V 2 Ground 3 Not assigned! 5.25 mm jack plug (PJ-068 equivalent) 1 Not assigned! 2 Microphone High 3 Microphone Low ¼” (6.35 mm) jack plug 1 Audio High left 2 Audio High right 3 Audio Low... -
Page 35: Manufacturer Declarations
(or your warranty certificate) as proof of purchase. Unless you submit proof of purchase, which will be verified by your local Sennheiser service partner, you will be obliged to pay for any repairs that are carried out. Proof of purchase must state the date of purchase and name of the product. - Page 36 Sennheiser and NoiseGard are registered trademarks of Sennheiser electronic GmbH & Co. KG. any modification of Sennheiser products effected by you or a third party, unless Sennheiser has given its prior written consent to the nature and extent of the modification...
- Page 37 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. 08/07 515872 / A02...
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