Sennheiser HMEC 460 User Manual Download | Manualshive

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Instructions for use

HMEC 460

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Summary of Contents for HMEC 460

Page 1: ...Instructions for use HMEC 460 ...

Page 2: ......

Page 3: ...icrophone 9 Powering the NoiseGard active noise compensation 10 Activating the auto shut off function 13 Connecting a mobile telephone 13 Connecting an additional audio player 15 Adjusting the headset 16 Using the headset 19 Switching between mono and stereo mode 19 Adjusting the volume 20 Switching NoiseGard on off 21 Attaching the cable clip 21 Folding up the headphones 22 ...

Page 4: ...eneral data 31 Connector assignment 32 Manufacturer Declarations 33 Thank you for choosing Sennheiser 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 instructio...

Page 5: ...tched on you can hear and recognize these sounds Set the volume to safe levels that do not interfere with your ability to hear informational sounds and warning alarms y The headset is capable of producing sound pressure exceeding 85 dB A 85 dB A is the sound pressure corresponding to the maximum permissible volume which is by law in some countries allowed to affect your hearing for the duration of...

Page 6: ...es y having read and understood these instructions especially the chapter Safety instructions y 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 using the headset other than as described in these instructions or under operating conditions which differ from those desc...

Page 7: ...s replaceable y Padded headband y Headband padding can be buttoned y Single sided connecting cable y Folding mechanism for space saving transport y Stylish silver design y Good attenuation of ambient noise due to NoiseGard active noise compensation y Clear communications even in the noisiest environment due to NoiseGard active noise compensation and MKE 45 1 pre polarized condenser microphone with...

Page 8: ...be used as a conventional headset y Audio In signals from the 3 5 mm jack socket mute automatically in the presence of intercom and or RT traffic y 2 5 mm jack socket for connecting a mobile telephone y 3 5 mm jack socket for connecting a portable audio player y Three options for powering NoiseGard on board power supply system cigarette lighter socket or batteries y Fail safe operation in case of ...

Page 9: ... 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 ...

Page 10: ... device Microphone Earpads Headband 5 25 mm jack plug PJ 068 equivalent XLR 3 plug 6 35 mm jack plug 2 5 mm jack socket 3 5 mm jack socket Boom switch Mono stereo switch ON OFF switch LED for operation and battery status indication Separate slide volume controls for left and right channel ...

Page 11: ...plug for connecting the headphones 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 왘 Connect the jack plugs and to the corresponding jack sockets of your intercom ...

Page 12: ...tional 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 short circuit In the unlikely case of a fault a short circuit could occur 왘 Before switching NoiseGard on ensure that the aircraft electrical circuit which supplies the headset from ...

Page 13: ...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 socket y ACX 1 adapter cable for powering one headset via the cigarette lighter socket y ACX 2 adapter cable for powering two headsets via the cigarette lighter socket The adapter cables are also available with a right angled jack plug fe...

Page 14: ...ese batteries IEC LR 6 or two 1 2 V AA NiMH rechargeable batteries Observe correct polarity 왘 Close the cover of the battery compartment 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 dis...

Page 15: ...livered ex works with the auto shut off function deactivated To activate the auto shut off function 왘 Open the cover of the battery compartment on the operating control 왘 Set the switch to the position ASO 왘 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 m...

Page 16: ...ng control However the functions of the mobile telephone cannot be controlled via the headset s operating control 왘 Switch NoiseGard on see page 21 Audio from the mobile telephone and from the intercom are heard simultaneously through the headset 왘 Operate your mobile telephone as usual and observe the manufacturers instructions Danger of accident due to reduced attention Making telephone calls or...

Page 17: ...e 21 Audio In signals mute automatically in the presence of intercom and or RT traffic Danger of accident due to reduced attention Listening to music or operating an audio device limits your attention and may cause accidents 왘 During flight operation do not use the headset for listening to additional audio sources Hearing damage due to high volumes This headset is capable of producing high sound p...

Page 18: ... Note Make sure not to squeeze any connecting cable when adjusting the headband Squeezing can damage the connecting cables 왘 Wear the headset so that the headband runs over the top of your head 왘 Adjust the length of the headband as shown so that your ears are completely inside the earpads you feel even gentle pressure around your ears a snug fit is ensured ...

Page 19: ...he 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 microphone orientation the boom switch allows you to correctly assign the audio channels L R to the appropriate headphone sides This enables the correct orientation of the volume controls and any stereo audio signals If the microphone is worn on the right side of th...

Page 20: ...he corner of the mouth The microphone boom is flexible so you can position it individually 왘 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 ...

Page 21: ...sition mono The RT and or intercom will be heard in both ears If the audio panel intercom system or radio installation in your aircraft is stereo for example if there is a music player such as a CD player installed in the panel 왘 Set the mono stereo switch on the operating control to position stereo The left and right channels from the audio panel will be fed to the corresponding sides of the head...

Page 22: ...ook or a qualified avionics engineer Adjusting the volume The operating control is fitted with two slide volume controls with which you can adjust the volume for the left and right channel separately 왘 Use the two slide controls to adjust the desired volume Hearing damage due to high volume levels The headset is capable of producing high sound pressure levels Higher volumes or longer durations can...

Page 23: ...hone cable can be fixed by means of the cable clip 왘 Guide the headphone cable through the metal cable clip as shown 왘 Attach the cable clip to your clothing 왘 Loop the cable through the clip so that the headphone cable doesn t hinder or distract you ON NoiseGard is switched on The LED lights up indicating the battery status see page 12 or power supply via the on board DC power supply system OFF N...

Page 24: ...tion the earcups can be folded up and tucked between the headband To fold up the headphones 왘 Grasp both earcups 왘 Fold up the earcups and tuck them between the headband To unfold the headphones 왘 Grasp both earcups 왘 Pull the earcups down and away from the headband ...

Page 25: ...amaged wind shield proceed as follows 왘 Carefully pull the wind shield from the microphone 왘 Slide on the new wind shield and ensure that it fits securely over the microphone Danger of short circuit due to the ingress of water Water entering the housing of the headset can cause a short circuit and damage the electronics 왘 Only use a soft slightly damp cloth to clean the headset Do not use any solv...

Page 26: ...of the earpad behind the earcup as shown and peel it up and away from the earcup 왘 Slide the new earpad onto the earcup Repeat for the other earcup Replacing the headband padding To replace a damaged headband padding proceed as follows 왘 Open the snaps on the headband padding and remove it 왘 Put the new headband padding around the headband 왘 Close the snaps ...

Page 27: ...et the NoiseGard ON OFF switch to ON The batteries rechargeable batteries are low Check to see if the LED is lit yellow If the LED is lit red replace the batteries rechargeable batteries The XLR 3 plug is not connected to the power source Connect the XLR 3 plug to the power source The aircraft fuse is defective Replace the aircraft fuse ...

Page 28: ...is set too low Increase the volume of your headset The headphone jack plug is not connected correctly Connect the headphone jack plug Active noise compensation but reduced intelligibility The microphone jack plug is not connected correctly Connect the microphone jack plug Communications in one ear only You are receiving a mono source but the headset is set to stereo operation Set the mono stereo s...

Page 29: ...er cable with a right angled jack plug for powering one headset ACX 2 ACX 22 Adapter cable with a right angled jack plug for powering two headsets ACX 22 MZW 45 Wind and pop shield 075823 MZQ 2002 1 Cable clip 044740 Padded carry and storage bag for headset and accessories 078366 Headband padding 515462 Audio cable with two 2 5 mm stereo jacks 515468 Audio cable with two 3 5 mm stereo jacks 515466...

Page 30: ...ng loss caused by the continuous noise in aircraft is one reason why many pilots became prematurely disabled or lose their pilot s license Circumaural communication headsets provide noise attenuating properties and are commonly used to address this problem However the noise attenuation of these headsets is uneven High frequencies are reduced considerably but low frequency wind and engine noise the...

Page 31: ...nd the radio signal is added back in Eventually the entire signal is amplified and fed back to the transducer in each earcup Since the noise component of the signal is inverted it cancels the noise signal coming through the earcup The radio signal remains unaffected as it was not processed through the cancellation circuits The diagram on the left shows noise compensation with NoiseGard Passive hea...

Page 32: ...ono 600 600 Ω stereo Attenuation active passive 25 40 dB Contact pressure approx 8 N Transducer principle pre polarized condenser microphone capsule noise compensating MKE 45 1 Frequency response 300 5 000 Hz Max sound pressure level 120 dB Min terminating impedance 150 Ω Output voltage 400 mV 3 dB at 114 dB as per RTCA DO 214 Supply voltage typ 16 VDC 8 16 VDC approx 8 25 mA as per RTCA DO 214 ...

Page 33: ...microphone 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 volume control for headphones Temperature range operation 15 C to 55 C storage 55 C to 55 C Operating time approx 30 hours with two 1 5 V AA alkaline manganese batteries or two 1 2 V AA NiMH rechargeable batteries ...

Page 34: ...XLR 3 plug 1 Power supply for NoiseGard 12 35 VDC 2 Ground 3 Not assigned 5 25 mm jack plug PJ 068 equivalent 1 Not assigned 2 Microphone High 3 Microphone Low 6 35 mm jack plug 1 Audio High left 2 Audio High right 3 Audio Low ...

Page 35: ...cretion either by repair or by exchanging individual parts or the entire appliance Any defective parts removed from a product during the course of a warranty claim shall become the property of Sennheiser electronic GmbH Co KG The following cases are not covered by the above warranty y minor faults or deviations in the quality of a product which do not affect the product s value or fitness for its ...

Page 36: ...are not restricted by these warranty terms and conditions as the warranty is governed by the laws of the country in which the Sennheiser product was purchased by the consumer The provisions of the UN Convention on the International Sale of Goods do not apply to this service If you wish to file a claim under the warranty please send the product to your local service partner together with accessorie...

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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