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HMEC 460
Instructions for use
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Contents Safety instructions ...................................................................................................................... 3 The HMEC 460 headset ............................................................................................................... 5 Delivery includes .......................................................................................................................... 7 Overview of operating elements .........................................
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Care and maintenance .............................................................................................................. 23 Cleaning the headset ............................................................................................................................... 23 Replacing the wind shield ....................................................................................................................... 23 Replacing the earpads ..........................................
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Safety instructions Please read these instructions carefully and completely before using the headset. Make these instructions easily accessible to all users at all times. Always include these instructions when passing the headset on to third parties. During flight operation, do not use the headset for telephone calls. With the NoiseGard active noise compensation switched on, typical aircraft sounds (for example, those from engines, propellers, warning alarms, etc.) may sound different to yo
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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: having read and understood these instructions, especially the chapter “Safety instructions”. 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 usi
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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 Lightweight Comfortable leatherette earpads (replaceable) Padded headband Headband padding can be buttoned Single-sided connecting cable Folding mechanism for space-saving transport Stylish silver design Good atte
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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” signals from the 3.5 mm jack socket mute automatically in the presence of intercom and/or RT traffic 2.5 mm jack socket for connecting a mobile telephone 3.5 mm jack socket for connecting a portable audio p
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Delivery includes 1HMEC 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 1 wind shield for microphone 1 MZQ 2002-1 cable clip 1 instruction manual 7
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Overview of operating elements Headset Headband padding Earpads Quick-fixing device Headband Microphone Operating control
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 left and right channel 8
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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: Connect the jack plugs and to the corresponding jack sockets of your intercom. 9
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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 ) DC 2. Connection to the cigarette ligther socket (12–35 V ) via an adapter cable (optional DC 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. Danger of
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Connecting the headset to the on-board DC power supply system To power the NoiseGard electronics, you can connect the headset to the on-board DC power supply system (12–35 V ). DC Have a 3-pole XLR socket (optional accessories) be mounted by a technician qualified to perform this type of installation. Connect the XLR-3 plug to the 3-pole XLR socket. Connecting the headset to a cigarette lighter socket (12–35 V ) via an adapter cable DC Sennheiser offers special adapter cables with XLR-3 so
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To connect the headset via an adapter cable: Connect the XLR-3 plug of the headset to the XLR-3 socket of the adapter cable. Connect the plug or right-angled jack plug of the adapter cable to the cigarette lighter socket. Powering the NoiseGard electronics via two (rechargeable) batteries Open the cover of the battery compartment on the operating control. Insert two 1.5 V AA alkaline-manganese batteries (IEC LR 6) or two 1.2 V AA NiMH rechargeable batteries. Observe correct polari
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Activating the “auto shut-off” function The battery-saving “auto shut-off” function automatically switches the NoiseGard electronics off when the headset is disconnected from the intercom or when the aircraft avionics are switched off. The headset is delivered ex-works with the “auto shut-off” function deactivated. To activate the “auto shut-off” function: Open the cover of the battery compartment on the operating control. Set the switch to the position “ASO”. Close the cover of the
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Danger of accident due to reduced attention! DANGER! Making telephone calls or operating the mobile telephone limits your attention and may cause accidents. 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 on the operating control and to the corresponding 2.5 mm jack socket on your mobile telep
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Connecting an additional audio player The operating control has a 3.5 mm jack socket , allowing you to connect an additional 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. During flight operation, do not use the headset for listening to additional audio sources! Hearing damage due to high volumes! This headse
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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. Adjust the length of the headband as shown so that – your ears are completely inside the earpads, – you feel even, gentle pressure around your
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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 by 180°. Tighten the quick-fixing device . Changing the left and right stereo channel The operating control is fitted with a boom switch . 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 mi
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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. 18
