Sennheiser HMEC 250 Instruction Manual Download | Manualshive

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HMEC 250

Headset for
general aviation

Instruction manual

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Summary of Contents for HMEC 250

Page 1: ...HMEC 250 Headset for general aviation Instruction manual...

Page 2: ...sensitivity 11 Switching between mono and stereo mode 11 Using the headset 12 Attaching the cable clip 12 Adjusting the headset 12 Adjusting the microphone boom 13 Adjusting the volume 13 Switching th...

Page 3: ...fere with your ability to hear critical sounds especially warning alarms and sounds resulting from malfunction The headset is capable of producing sound pressure levels exceeding 85 dB A In many count...

Page 4: ...ces when not in use Remove batteries when the device is not used for extended periods of time Dispose of exhausted batteries at special collection points or return them to your specialist dealer Do no...

Page 5: ...headset other than as described in this instruction manual or under operating conditions which differ from those described herein Delivery includes Delivery of the HMEC 250 headset includes 1 HMEC 25...

Page 6: ...xact opposite i e at the same level but polarity reversed 180 out of phase the result is that the polarity reversed signal cancels most of the outside noise Fail safe operation When the batteries are...

Page 7: ...or space saving storage and transpor tation Noise compensating boom microphone ensures excellent speech transmission Flexible microphone boom Separate left and right channel volume control Excellent c...

Page 8: ...OFF button NoiseGard TT VOLUME button Talk Through TALK THROUGH button on off LED status display Operating control integrated in the cable Cable with microphone plug 5 25 mm jack plug Cable with head...

Page 9: ...as shown Close the battery compartment The battery compart ment cover locks into place with an audible click Connecting the headset The headset s operating control features two cables with one jack p...

Page 10: ...ia the headset s operating control However the functions of the mobile telephone cannot be controlled via the headset s operating control Switch NoiseGard on see Switching NoiseGard on off on page 15...

Page 11: ...through the headset Operate the connected audio player as usual and observe the manufacturers instructions DANGER Danger of accident due to reduced attention Listening to music or operating an audio p...

Page 12: ...sensitivity of the microphone Use a suitable slotted screwdriver Turn the microphone sensitivity control as shown Switching between mono and stereo mode The mono stereo switch allows you to switch be...

Page 13: ...ophone boom is on the left side of the mouth see right left labeling on the headband joints and the headband runs over the top of your head Adjust the length of the headband so that your ears are comp...

Page 14: ...ntrol integrated into the headset cable To adjust the volume for the left or right channel Slide one of the two volume controls upwards to increase the volume or downwards to reduce the volume CAUTION...

Page 15: ...h the TalkThrough function on or off When the TalkThrough function is switched on the LED lights up green Adjusting the volume of the TalkThrough function To increase the volume of the TalkThrough fun...

Page 16: ...approx one second When NoiseGard is switched on the LED lights up red and you can listen to music and make telephone calls at the same time Fail safe operation When the batteries are completely disch...

Page 17: ...geable batteries as follows Open the battery compartment by pushing the catch and open the cover Remove the battery Insert a new AAA size battery as shown Close the battery compartment The battery com...

Page 18: ...safe transportation of the headset use the supplied soft case and fold the headset as follows Rotate the ear cups by 90 Turn the microphone boom flat as shown Pull out the right ear cup and then fold...

Page 19: ...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 clea...

Page 20: ...the ear cup until it clicks audibly into place Repeat for the other ear cup Replacing the wind shield You can replace the wind shield The HMEC 250 is supplied with a spare wind shield Carefully pull t...

Page 21: ...y or 2 x 1 2 V AAA size rechargeable battery Operating time approx 30 hours Cable length 1 85 m Headphone connector 6 35 mm jack plug Microphone connector 5 25 mm jack plug Additional features NoiseGa...

Page 22: ...sive attenuation plus 16 25 dB active noise compensation at low frequencies Contact pressure approx 8 N Microphone incl preamplifier Type BKE 46 Transducer principle pre polarized condenser microphone...

Page 23: ...8 EC The declaration is available at www sennheiser com Before putting the device into operation please observe the respective country specific regulations Batteries The supplied batteries can be recy...

Page 24: ...Sennheiser electronic GmbH Co KG Am Labor 1 30900 Wedemark Germany www sennheiser com Printed in China Publ 05 10 516578 A04...

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