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Sennheiser HMEC 300, HMDC 322 manual Delivery includes, HMEC 302, HMEC 305 and HMEC 306 headsets

Models: HMEC 306 HMEC 305-C HMEC 302 HMEC 305 HMEC 322 HMEC 400 HMDC 322 HMEC 300

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Delivery includes

HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets

•Headset

•3-pin XLR socket for aircraft panel mounting (power supply via the on-board system)

•Padded carry and storage bag with shoulder strap for headset and accessories

•Wind screen for microphone (except HMDC 322)

•MZQ 2002-1 Cable clip (Cat. No. 44740)

HMEC 302, HMEC 305 and HMEC 306 headsets

•Headset

•Padded carry and storage bag with shoulder strap for headset and accessories

•Wind screen for microphone

•MZQ 2002-1 Cable clip (Cat. No. 44740)

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Sennheiser HMEC 300, HMDC 322, HMEC 400, HMEC 322, HMEC 305-C Delivery includes, HMEC 302, HMEC 305 and HMEC 306 headsets

Contents

Instructions for use HeadsetHMEC HMEC HMEC HMEC 305-C HMEC HMEC HMEC HMDC Contents Safety tips Safety tips Headset features HMEC 300 NoiseGard headsetHMEC 305 NoiseGard headset Product variantsHMEC 302 NoiseGard headset HMEC 322 NoiseGard headset HMEC 305-CNoiseGard headsetHMEC 306 NoiseGard headset HMEC 400 NoiseGard headset HMDC 322 NoiseGard headsetHMEC 302, HMEC 305 and HMEC 306 headsets Delivery includesRecommended accessories Replaceable gel ear cushions Cat. NoConnecting the headsets Connecting cables for headsetsHMEC 300 and HMEC 400 headsets HMEC 302 headsetHMEC 322 and HMDC 322 headsets HMEC 305-CheadsetHMEC 306 headset Connecting cable for HMEC 305-CPowering options HMEC 300 and HMEC 400 headsets 1. Connecting the headset to the on-boardsystemDanger of short circuit Headset HMEC Headset HMEC 305-CHMEC 322 and HMDC 322 headsets HMEC 305 headsetLED operation and battery status indication Inserting / replacing the the batteriesAttaching the battery pack to clothing Connecting the headset Preparing the headsets for use Adjusting the headbandPositioning the microphone Relocating the microphone boomTilt the microphone for final positioning 1.Pull the wind screen from the microphone Using the headsets Adjusting the volumeTurning NoiseGard on/off Exposure to loud sounds can cause hearing damageAdjusting the microphone gain Folding up the headphonesMic Gain Adjustment Attaching the cable clipReplacing the ear cushions Spare partsReplacing the wind screen Replacing the headband padding Replace the headband padding if it is damagedPut the new headband padding around the headband Join the fastening stripsPossible cause and what to do ProblemIn case of difficulty Problem Possible cause and what to doValuable information on NoiseGard The NoiseGard principlePage The above diagram shows noise compensation with NoiseGard Passive hearing protectors effectively attenuate noise from the middle and upper frequency range, the effect decreasing sharply in the lower range. However, active noise compensation with NoiseGard combined with passive hearing protectors results in a reduction of noise of approx. 25 dB in the 25-500Hz frequency range. The total attenuation resulting from active and passive noise compensation is about 30 dB over the entire audio range Connector assignment Technical data HeadphonesMicrophone incl. preamplifier HMECGeneral data HMECHMEC HMECHMEC 305-C HMDCTechnical data HeadphonesHMEC HMEC 305-CHMEC HMDCCertificate of Conformity