background image

350

°

Cable (worn on left or right side)

Cable on the left

Cable on the right

N.B.:

NoiseGard

® 

 

 

reduces noise and increases comfort.

NoiseGard

®

 

 

is not a medical noise protection

system!

NoiseGard

®

 

 

cannot replace an industrial ear

defender system for use in noisy environments!

volume up?  - No !

When people use headphones, they tend to choose a higher volume than with
loudspeakers. Listening with high volume levels for a longer time can lead to
permanent hearing defects. Because the 

NoiseGard

®

 circuitry is reducing the

ambient noise the headphones can be set at a correspondingly lower level leading
to more comfortable hearing conditions so protecting your hearing.

Summary of Contents for HMEC 45-CA NoiseGard

Page 1: ...HMEC 45 CA P N 045 230 125 GEBRAUCHSANLEITUNG INSTRUCTIONS FOR USE NOTICE D EMPLOI ISTRUZIONI PER L USO INSTRUCCIONES PARA EL USO GEBRUIKSAANWIJZING HMEC 45 KA P N 045 230 115...

Page 2: ...proven by studies and everybody will have experienced them Nervousness Lack of concentration Irritability And these are only the most obvious effects on the human body Noise also affects the autonomic...

Page 3: ...the ambient noise This active noise compensation operates on the principle that sound and anti sound in phase opposition cancel each other out The NoiseGard compensation circuitry in the headphone re...

Page 4: ...een LED lights up When the power supply is switched off or when the batteries go flat the headphone works like an ordinary headphone without noise compensation As the microphone is connected to the ai...

Page 5: ...Adjusting the headband...

Page 6: ...system for use in noisy environments volume up No When people use headphones they tend to choose a higher volume than with loudspeakers Listening with high volume levels for a longer time can lead to...

Page 7: ...phone headphone capsule left sensor microphone left headphone capsule right screen screen bl rd bl rd screen rd bl screen cable splice bl rd or wh br gn ye bl rd ye bl bk DC box sensor microphone righ...

Page 8: ...apsule left sensor microphone left headphone capsule right screen screen bl rd bl rd screen rd bl screen cable splice bl rd or wh br gn ye bl rd ye bk DC box sensor microphone right Circuit diagram an...

Page 9: ...ure level 120 dB THD 1 Output voltage 400 mV 3 dB at 114 dB SPL as per RTCA DO 214 Terminating impedance 150 Operating voltage 8 16 V DC 8 25 mA connections as per RTCA DO 214 General Data Contact pre...

Page 10: ...t under http www sennheiser com Vous trouverez galement toutes les informations actuelles relatives aux produits Sennheiser sur Internet sous http www sennheiser com Informazioni attuali sulla gamma d...

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