Related Manuals for Sennheiser HMEC 250
Summary of Contents for Sennheiser HMEC 250
- Page 1 HMEC 250 Bedienungsanleitung Instruction Manual Notice d‘emploi Istruzioni per l‘uso Instrucciones de uso Gebruiksaanwijzing...
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Page 2: Table Of Contents
Contents Important safety instructions ...2 Delivery includes ...4 The HMEC 250 headset ...5 Operating elements ...7 LED indications ...8 Preparing the headset for use ...9 Inserting the batteries ... 9 Connecting the headset ... 9 Connecting a mobile telephone ... 10 Connecting an additional audio player ... -
Page 3: Important Safety Instructions
Only replace those parts of the headset whose replacement is described in this manual. All other parts of the headset must be replaced by your Sennheiser agent. Protect the headset from humidity. Use only a slightly damp cloth to clean the headset. For information on how... - Page 4 Safety instructions for batteries If abused or misused, batteries may leak and, in extreme cases, may even present an explosion and fire hazard. Sennheiser does not accept any liability for damage arising from abuse or misuse. Keep batteries out of reach and out of sight of children.
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Page 5: Delivery Includes
Improper use means using the headset other than as described in these instructions, or under operating conditions which differ from those described herein. Delivery includes Delivery of the HMEC 250 headset includes: 1 HMEC 250 headset 1 soft case 1 cable clip 2 MZW 46 wind and pop shields 1 audio-in cable for mobile telephones, length 0.6 m,... -
Page 6: The Hmec 250 Headset
The HMEC 250 headset The HMEC 250 headset with NoiseGard 2.0 active noise compensation features closed, dynamic, circumaural stereo headphones. The HMEC 250 is a headset for general aviation use. NoiseGard 2.0 The NoiseGard 2.0 active noise compensation system is based on the principle of cancelling out sound using “anti-... - Page 7 TalkThrough function The TalkThrough function allows you to communicate with the people around you while wearing the headset. The NoiseGard 2.0 active noise compensation and the peak level protection remain unaffected by the TalkThrough function and help to protect your hearing. Additional features Outstanding transmission...
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Page 8: Operating Elements
Operating elements » Headset Microphone sensitivity control Headphone cable Microphone boom Earpads Headband Battery compartment (on both sides) Operating control integrated in the headset TT VOLUME + button ON/OFF button (NoiseGard 2.0) TT VOLUME – button TalkThrough button Operating control integrated in the cable Cable with microphone plug, 5.25 mm jack plug Cable with headphone plug,... -
Page 9: Led Indications
LED indications Meanings of the LED Meaning NoiseGard 2.0 operation green TalkThrough operation flashing Batteries are almost flat... -
Page 10: Preparing The Headset For Use
Preparing the headset for use Inserting the batteries Insert the batteries into the battery compartments on the left and right earcups as follows: Open the battery compartment and open the cover. Insert the AAA size battery as shown in the diagram on the left. -
Page 11: Connecting A Mobile Telephone
The 2.5 mm jack socket telephone. For this purpose, the microphone plug connected to the aircraft radio/intercom. A suitable adapter for your mobile telephone with 2.5 mm jack socket is available from your Sennheiser agent. DANGER! Danger of accident due to reduced attention! -
Page 12: Connecting An Additional Audio Player
Connecting an additional audio player The 3.5 mm jack socket to an additional audio player (e.g. MP3 player) through the headset. DANGER! Danger of accident due to reduced attention! Listening to music or operating an audio device limits your attention and may cause accidents. -
Page 13: Adjusting The Microphone Sensitivity
Adjusting the microphone sensitivity The microphone sensitivity has been factory pre-set to 40 mV/Pa as per RTCA DO-214. To change the input sensitivity of the microphone: Use a suitable slotted screwdriver. Turn the microphone sensitivity control Switching between mono and stereo mode The mono/stereo switch mono and stereo mode, depending on the intercom system. -
Page 14: Using The Headset
Using the headset Attaching the cable clip The cable clip allows you to attach the headphone cable to your clothing so that the cable doesn’t hinder or distract you. Guide the headphone cable Attach the cable clip Adjusting the headset Wear the headset so that –... -
Page 15: Adjusting The Volume
Bend the microphone boom placed at the corner of the mouth. Maintain a distance of approx. 2 cm between microphone and mouth. Adjusting the volume CAUTION! Hearing damage due to high volume levels! The headset is capable of producing high sound pressure levels. -
Page 16: Switching The Talkthrough Function On/Off
Switching the TalkThrough function on/off The HMEC 250 provides excellent attenuation of ambient noise. In order to allow you to communicate undisturbed with your surroundings while wearing the headset, the HMEC 250 features a TalkThrough function. Press TalkThrough TalkThrough function on or off. -
Page 17: Switching Noisegard On/Off
– you can listen to music and make telephone calls at the same time. When the batteries are completely discharged, the NoiseGard 2.0 active noise compensation automatically switches off. RT traffic (e.g. ATC) and intercom will still be heard through the headphones. for approx. one second. -
Page 18: Replacing The Batteries
Replacing the batteries When the batteries are almost flat, the LED the batteries are completely discharged, the NoiseGard 2.0 active noise compensation automatically switches off (fail safe operation). Replace the battery as follows: Note: Always replace the two batteries at the same time. Open the battery compartment and open the cover. -
Page 19: Folding Up The Headset
Folding up the headset space-saving transportation, the headset can be folded up in different ways: To fold up the headphones as Rotate the earcups by 90° and turn the microphone boom flat as shown. To fold up the headphones as Tuck the earcups between the headband as shown. -
Page 20: Care And Maintenance
Care and maintenance CAUTION! Liquids can damage the electronics of the headset! Liquids 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 21: Replacing The Wind Shield
044740 515297 514127 523897 Replacing the wind shield You can replace the wind shield. The HMEC 250 is supplied with a spare wind shield. Carefully pull the wind shield Slide-on the new wind shield securely over the microphone. Accessories and spare parts... -
Page 22: Specifications
Weight without cable Temperature range (operation) -10 to +55 °C Temperature range (storage) Power supply for NoiseGard Cable length Headphone connector Microphone connector Additional features Headphones Transducer principle Ear coupling Frequency response (headphones) Frequency response (TalkThrough) Nominal impedance passive Nominal impedance active approx. - Page 23 Sound pressure level passive 98 dB at 1 kHz, 1V active THD at 94 dB SPL Attenuation Contact pressure Microphone incl. preamplifier Type Transducer principle Frequency response Output voltage Terminating impedance Supply voltage Connector assignment ¼” (6.35 mm) jack plug 1 Audio Hi left 2 Audio Hi right 3 Audio Lo...
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Page 24: Manufacturer Declarations
Manufacturer declarations Warranty regulations The guarantee period for this Sennheiser product is 3 years from the date of purchase. Excluded are accessory items, rechargeable or disposable batteries that are delivered with the product; due to their characteristics these products have a shorter service life that is principally dependent on the individual frequency of use. - Page 25 Before putting the device into operation, please observe the respective country-specific regulations! WEEE Declaration Your Sennheiser product was developed and manufactured with highquality materials and components which can be recycled and/or reused. This symbol indicates that electrical and electronic equipment must be disposed of separately from normal waste at the end of its operational lifetime.
- Page 26 Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com Printed in China Publ. 06/07 516578/A02...