Sennheiser HMEC 352 Wartungshandbuch

Instructions for useHMDC 372HMEC 350/352/355 355-C/356/372/450

10Connecting the headsetsConnecting cables for headsetsHMEC 350 and HMEC 450 headsets:1 ¼” (6.35 mm) stereo jack plug for connecting the headphones1 P

11HMEC 355-C headset:1 XLR-5 plug for connecting the headphones and the microphone1 XLR-3 plug for connecting the power supply for the NoiseGard™ el

12Connector assignmentRedel connector (NoiseGard™) XLR-3 connector (NoiseGard™) XLR-5 connector1 Power supply NoiseGard™ (DC+) 1 Power supply NoiseGar

13Powering optionsThere are three options for powering the NoiseGard™ active noise compensation:1. Connection to the on-board system (12–35 V DC)2. Co

141. Connecting the headset to the on-board systemThe NoiseGard™ electronics can be connected to on-board power supply systems withoperating voltages

15HMEC 352 headset:왘 Connect the ¼” (6.35 mm) stereo jack plug for the headphones and the PJ-068 jackplug for the microphone to the corresponding jack

162. Connecting the headset to the battery pack (except HMEC 352, HMEC 355 and HMEC 356)The NoiseGard™ electronics of the HMEC 350, HMEC 355-C, HMEC 3

17Connecting the headset, turning on the battery pack왘 Connect the XLR-3 plug of the headset connecting cable to the XLR-3 socket on theconnecting cab

183. Connecting the headset via a cigarette lighter adapter cable (except HMEC 352, HMEC 355 and HMEC 356)Sennheiser offers special adapter cables wit

19Preparing the headsets for useAdjusting the headbandFor good noise attenuation and best possible comfort, the headband has to be adjustedto properly

2Contents Safety tips ...

20Positioning the microphoneRelocating the microphone boom The microphone boom can be worn on either side of the mouth. 왘 Loosen the quick-fixing devi

21For positioning the microphone of the HMDC 372 headset, proceed as follows:왘 Adjust the length of the microphone boom so that the microphone is plac

22Using the headsetsTurning NoiseGard™ on/offWith the NoiseGard™ active noise compensation turned off, the headset can be used asa conventional headse

23Attaching the cable clipThe headphone cable can be fixed by means of the cable clip. Guide the headphone cablethrough the metal cable clip as shown

24Spare partsThe following spare parts are available from your Sennheiser agent:• Wind screen for MKE 45-1 Cat. No. 075823• Ear cushions for all varia

25Replacing the headband paddingReplace the headband padding if it is damaged. 왘 Pull the Ziploc type fastening strips of the headband padding apart a

26Valuable information on NoiseGard™The NoiseGard™ principleOne of the greatest stress factors today is noise. Research has shown that noise affectsth

27NoiseGard™ active noise compensation is achieved by generating a signal identical insound pressure level but exactly reversed in phase to the noise

28In case of difficultyIf problems occur that are not listed in the below table, please contact your Sennheiseragent.Problem Possible cause and what t

29Problem Possible cause and what to doActive noise compensation but very low volume communication The volume control is set too low. 왘 Check the volu

3The HMEC 350, HMEC 352, HMEC 355, HMEC 355-C, HMEC 356, HMEC 372, HMEC 450 andHMDC 372 are pilot headsets with closed ear protector headphones and No

30Technical dataHMEC 350  HMEC 352  HMEC 356  HMEC 450HeadphonesTransducer principle dynamicEar coupling circumaural, closedFrequency response 45–1

31HMEC 350  HMEC 352  HMEC 356  HMEC 450General dataConnecting cable 1.5 m, unilateralWeight without cable 370 gPower supply for NoiseGard™ 12–35 V

32Technical dataHMEC 355  HMEC 355-C  HMEC 372  HMDC 372HeadphonesTransducer principle dynamicEar coupling circumaural, closedFrequency response 45

33HMEC 355  HMEC 355-C  HMEC 372  HMDC 372General dataConnecting cable 1.5 m, unilateral  coiled cable, unilateralWeight without cable 370 gPower

34Certificate of ConformitySennheiser electronic GmbH & Co. KG declare that these devices conform to the basic requirements of EECDirective 89/336

Sennheiser electronic GmbH & Co. KG30900 Wedemark, GermanyPhone +49 (5130) 600 0Fax +49 (5130) 600 300www.sennheiser.comPrinted in Germany

4Headset featuresHMEC 350 NoiseGard™ headset• New active headset with effective attenuation of external noise across the entirefrequency spectrum due

5• With the NoiseGard™ active noise compensation turned off, the headset can be usedas a conventional headset• Power supply for NoiseGard™ is provided

6HMEC 355-C NoiseGard™ headsetThe HMEC 355-C differs from the HMEC 350 in the following features: • No Mono/Stereo switch• Connection of headphones an

7HMEC 450 NoiseGard™ headsetThe HMEC 450 differs from the HMEC 350 in the following features: • Stylish silver design• Leatherette ear cushions• Headb

8Delivery includesHMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets•Headset• 3-pin XLR socket for aircraft panel mounting (power supply v

9Recommended accessoriesReplaceable gel ear cushions (Cat. No. 092807)BP-04 battery pack (Cat. No. 500357) (except for HMEC 352, HMEC 355 and HMEC 356