Sennheiser HMEC 352 manual

Instr uct ions f or u se HMDC 372 HMEC 350/352 /355 355-C/356/3 72/450[...]

2 Conte nts S afe ty ti ps ..... ... ... ... .... ... ... ...... .... ... ... ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ...... .... ... ... ... ... ... . ... ... ... ... .... ... ... 3 H eadset features ..... ... ... ... ... .... ... ... ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ....... ...[...]

3 The H MEC 3 50 , HME C 352, HMEC 355 , HM EC 35 5-C, H ME C 35 6, HM EC 372 , HM EC 45 0 an d HMDC 37 2 a re pil ot he ads et s wit h cl os ed ea r p rot ect or he adph o nes and No iseG a rd ™ active noise compensation for use in helicopters, propeller and turboprop aircraft . Sa fety tips • With th e Noise Gard™ a cti ve nois e com pensat[...]

4 Headset featu res HME C 35 0 No ise Gar d™ h ea dse t • Ne w a ct ive heads e t with ef fecti ve attenua tion of ex ternal noi se acros s the entir e freq u enc y spe ct rum du e t o Noi seG a rd™ a cti ve n oi se c om pe n sa tion • NoiseG ard™ active noise comp ensat ion pro vides c lear comm unic ations e ven in the noisies t e nvir [...]

5 • Wi th t he N oi se Gar d™ ac tiv e noi se co mp en sa ti on tu rn ed o ff , th e hea d set can b e us ed as a convent ional headset • P ow er supply for NoiseGard™ is pr ovided vi a on-boar d power suppl y system, cigar ette ligh ter sock et o r ba tter y pa ck • F ail saf e operation in case of power failure • S u pp ly vo lt age f[...]

6 HME C 35 5- C Noi seGa rd™ h ead set The HMEC 355 -C dif fers from the HMEC 350 in t he following features: • No Mono/St ereo switc h • Conne ction o f hea dphones a nd microp hone vi a XLR-5 p lug • Conn ection of Nois eGar d™ ele ctronic s via XLR -3 p lug HME C 35 6 No ise Gar d™ h ea dse t The H MEC 356 di ffer s f rom t he HME C [...]

7 HM E C 45 0 No ise Gard ™ h ead set The HM EC 450 di ffer s fr o m th e H MEC 350 in the f o llow in g fea tur es: • Stylish silver design • L eath er et te ear cus h ions • He adband paddi ng c a n be butt oned HM D C 37 2 No ise Gard ™ h ead set The HMDC 372 differs from th e HMEC 350 in the following features: • No Mono/St ereo swi[...]

8 Delivery includ es H MEC 3 50 , HME C 355- C, HM E C 372, HMEC 45 0 and HMDC 372 head se ts •H e a d s e t • 3-p in XLR so c ket f or aircraf t panel mounting (power supply vi a the on-bo ard system) • P added car ry and stor age bag with shoulder stra p fo r headset an d acces sories • W in d sc re en f or m i c rop h o ne (e x c ep t H [...]

9 Re commend ed access ories Repl aceab le gel ear cu shions (Cat . No. 09280 7) BP- 04 batte ry pack (Cat . No. 50035 7) (excep t for HMEC 352, HM EC 35 5 and HM EC 356) Ba t ter y pack wit h XL R- 3 sock et fo r power ing th e Noi seG ard™ ele ctron ics of the HMEC 350 , HME C 35 5-C, HME C 37 2, H MEC 450 and H MD C 37 2 heads ets. Four 1. 5 V[...]

10 Conne cting the he adset s Connecting c ables for h eadsets HME C 35 0 and HME C 450 hea dse ts: 1 ¼” (6.35 mm) st ereo j ack p lug for con nect ing th e hea dphon es 1 P J-0 68 j ack p lug for connectin g the micr ophone 1 XL R-3 pl ug for c onn ectin g the pow er supply for the NoiseG ard™ el ectro ni cs HME C 35 2 hea dse t: 1 ¼” (6.3[...]

11 HM E C 35 5- C hea dset : 1 XL R-5 p lug for c on necti ng the he a dphone s and t he mi crop hone 1 XL R -3 p lug for connec ting the po wer sup p ly for th e Noi seGard™ el ectroni c s HM E C 35 6 hea dse t: 1 6- pin R ede l plu g fo r conn e cting t he h eadp h ones , the m icr oph on e and t he po w er supply for the NoiseGard™ electroni[...]

12 Co nne cto r assi gn me nt Redel c onnector (NoiseGard™ ) XLR-3 connector ( NoiseGard™) XLR-5 c onnector 1 P ower supply N oiseGard™ (DC+) 1 Power supply N oiseGard™ (DC+) HMEC 355 HMEC 355-C 2A u d i o L o / D C – 2G r o u n d 1A u d i o H i 1A u d i o H i 3A u d i o H i l e f t 3– * 2A u d i o L o / D C – 2A u d i o L o 4A u d i [...]

13 Powering options The re ar e thr e e opt io n s fo r pow er in g th e No is e Gar d™ ac tiv e no is e com p ens a tio n: 1. Conne ction to th e on-board sy stem (12–35 V DC) 2. Conne ction t o the BP-04 battery p ack (acces so ry, ex ce pt for HMEC 352 , HM EC 3 55 and HME C 35 6) 3. Conn ectio n to t he cig aret te lig the r socke t (12 –[...]

14 1. Connecti ng the headse t to the on-bo ard syste m The NoiseGard™ electronics can be connected to on- board power supply systems with op er at ing volt ag es b et wee n 12–3 5 V D C. Dange r of shor t circui t ! Before turning on NoiseGard™, ensure that the on-board power supply system is prot e cted by a 1 A fuse. Th e H MEC 35 0, HMEC [...]

15 HM E C 35 2 hea dse t: 왘 C onnec t the ¼ ” ( 6. 35 mm) s ter eo jack plug f or t he he adph ones and the P J-0 6 8 jac k plu g fo r the mic ro ph one to t he cor res pon din g jack sock ets of you r int erco m. HM E C 35 5 hea dse t: 왘 Con nec t the XL R -5 pl ug to the a ir cr aft’s XL R- 5 soc k et . HM E C 35 5- C hea dset : 왘 C o [...]

16 2. Connecti ng the headset to the ba ttery pack (exce pt H MEC 352 , HM EC 35 5 and H M EC 35 6) Th e No ise Gard ™ el ec tron ics of t he HME C 350 , H MEC 355- C , HMEC 37 2, H ME C 450 an d H MDC 372 h eadsets can also b e p owered via the BP-04 batte ry p ack (see “Rec ommen de d acces sor ies” on p age 9). T he bat tery p a ck can b e[...]

17 Conne cting the headse t, tur ning on the batt ery pack 왘 C onnect t he XLR-3 pl ug of the heads et connec ting c able to t he XLR- 3 socke t on the conn ecting c able of the ba ttery pa ck . 왘 HMEC 35 0 an d HM EC 45 0 h ead sets: Con nect th e ¼” (6. 35 mm ) ster eo jac k plug fo r the he a dph o nes an d the P J -0 68 j ack p lug fo r [...]

18 3. Connec ting the he adset via a cigar ette lighter a dapte r cable (exce pt H MEC 352 , HM EC 35 5 and H M EC 35 6) Sen nheiser offers s pecial adapter cables with XLR-3 s ocket for connect ing the N oiseGard™ electronics of the HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 heads ets to the on -bo ard pow er supp ly via the ciga rett[...]

19 Preparing th e head sets for use Adjusti ng the headband F or good noise atten uation and be st possible comfort, the headband has t o be adjusted to p roperly fit y our head: 왘 Wear th e he ad s e t so th at th e he ad ba n d ru n s ov er the to p o f yo ur hea d . 왘 Adju st the length of the headband so that • you r ears ar e comp l ete [...]

20 Positionin g the microphon e Relocat ing the mi croph one boom The microp hone boom ca n be worn on either si de of t he mouth. 왘 L oos en t he qui ck- fix ing de vice . 왘 R otate the mi crophone boom by 180 °. 왘 Tigh t en th e qu i ck -f i xi ng d ev i c e. Posi tioning the mi croph one towa rds the corner of the mout h Th e H ME C 3 50,[...]

21 F or positioning the microphone of the HMDC 372 headset, proceed as follows: 왘 A djust the le ngt h o f the m icr ophone boom so th at t he micr ophone is pl a ce d at the c o r n e r o f t h e m o u t h . T o d o s o , l o o s e n t h e q u i c k - f i x i n g d e v i c e a n d a d j u s t t h e mic rophone boom i n length. 왘 P ul l th e mi[...]

22 Using the headsets T ur ning No iseGar d™ on /off Wit h th e Noise Gard™ a ctive noise compen sati on turn ed o ff, the h eadset ca n be use d as a c on ve nt i on al hea dse t. T urn on t he Noise G ard™ a ctive noise compensat ion by sett i n g the O N /OFF s wit c h to “ON”. Whe n usi ng the BP-0 4 ba tt ery p ack , set t he N oiseG[...]

23 Atta c hing the cable clip The he adpho ne cable ca n be fi xed by means of the c able cli p. Guide the headphone cable thr ou g h the m e ta l ca bl e cl ip a s s how n i n th e il lus t r ati on o n th e l eft. At tac h t h e cab l e clip to yo ur clo th in g a nd th e n lo op th e c a bl e thr o ug h t h e cli p so t h at th e h ead p hon e c[...]

24 Spare parts The follo wing spare parts are available from your Sennheiser agent : • Wind scre en f or MKE 45- 1 Cat. No. 075 823 • Ear cushions for all variants except HMEC 450 Cat. No. 077966 • Ear cu shion s for HMEC 450 Ca t. No. 08576 4 • Soft ear cush ion s for HMEC 450 Ca t. No. 089 382 • He adband paddi ng Cat. No. 0 86628 • M[...]

25 Rep lac ing t he he adba nd pad ding Repl ace th e hea dband p adding i f it is da maged. 왘 Pu ll the Ziploc type fastening strips of the headband padding ap art and remove the worn h e adband p adding. 왘 Pu t the new h eadband padd ing arou nd the hea dband. 왘 Pu ll th e t wo edge s of the headband pa dding toge ther s o that the fasteni [...]

26 V aluable in f ormatio n on NoiseG a rd™ The NoiseGard™ principle One of the great est stres s f actors t o day is noi se. Researc h has show n that nois e affects the nervo u s system, and c an cau se tire dn ess, po or concent r ati on, irri ta bilit y and tensi on. Of even greater concern is t he permanent damage to heari ng that can resu[...]

27 NoiseG ard™ ac tive n oise comp ensat ion is ach ieved by generat ing a sign al ide ntical in sou nd pres su r e leve l but exa ct ly re ver se d in p ha s e to t he n oi se s ign al , th e eff ect bein g that the ou t-of-phase signal cancels most of the noi se signal. Active no ise co mpen satio n is acc o mplishe d in t he f ollow ing man ne[...]

28 In case of di ff ic ul ty If problems occur that are not listed in t he below table, plea se contact y our Sennheiser ag ent . Proble m Poss i ble c ause and what to do Clear c ommunicat ion but no a cti v e n oi se co m p e ns atio n The NoiseG ard™ el ectro nics are t urne d of f. 왘 Check to see i f the ON/OFF switch is set to “ON”. Th[...]

29 Problem Possi bl e cause a nd what to do Activ e noi se compe nsa tion but very low volume c ommunication The volume control is set t oo low. 왘 Ch eck th e volu me se tting of the heads et. Th e hea dph on e con nec tion has bee n pu lled ou t (e xcept HME C 35 5, H MEC 355 -C an d HME C 35 6) . 왘 Ch eck to s ee if t he h eadph one jack pl u[...]

30 Te c h n i c a l d a t a HM E C 35 0  HMEC 352  HMEC 356  HMEC 450 Headphone s T rans ducer principle dynam ic Ear cou pling circumaur al, closed Fre q uen cy respons e 45–15, 000 Hz Nomin al imped ance ac tive/pas s ive 300/ 150 Ω , mo no 600/ 300 Ω , st er eo Atten uation (ac tiv e and pas sive) > 25– 40 dB Max. s ound pre [...]

31 HMEC 350  HMEC 352  HMEC 356  HMEC 45 0 Gen er al d at a Connecti ng cabl e 1.5 m , un ilateral Weigh t w i tho ut c abl e 370 g Power supply for NoiseGard™ 12–35 V DC Curre n t co nsum ption 27 m A (ze ro sig nal cu rr ent), m ax. 80 mA Fu se 5 00 m A the rmo f us e Con nect or s 6 .35 mm ste reo j ack pl ug  6.35 mm ste re o j [...]

32 Te c h n i c a l d a t a HM E C 35 5  HMEC 3 55- C  HMEC 372  HMDC 372 Headphone s T rans ducer principle dynam ic Ear cou pling circumaur al, closed Fre q uen cy respons e 45–15, 000 Hz Nomin al imped ance ac tive/pas s ive 300/ 150 Ω , mo no  50 /35 Ω , m ono Atten uation (ac tiv e and pas sive) > 25– 40 dB Max. s ound p[...]

33 HMEC 355  HM EC 3 55-C  HMEC 372  HMD C 372 Gen er al d at a Connecti ng cabl e 1.5 m , un ilateral  coiled cab le, unilat e ral Weigh t w i tho ut c abl e 370 g Power supply for NoiseGard™ 12–35 V DC Curre n t co nsum ption 27 m A (ze ro sig nal cu rr ent), m ax. 80 mA Fu se 5 00 m A the rmo f us e Conne c tors XLR-5 for head ph[...]

34 Certif icat e of Co nfor mity Se nnhe ise r ele ctr oni c GmbH & Co. KG d e clar e tha t t hes e de vice s con f orm to th e bas ic requ irem ents of EEC Dire cti ve 89 /3 36/EE C an d 73 /2 3/E EC . Guaran tee Cert ificat e Th e guar a ntee period fo r this Sen nheise r product i s 5 year s from the date of pu rchase. E xclu ded are ac cess[...]

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Se nnheis er e lec tron ic GmbH & Co. K G 30900 W ede ma rk, Ge rman y Pho ne +4 9 ( 5130) 600 0 Fax +49 (5 130 ) 600 3 00 www. se nnhe is er.c om Printed in Germany Publ. 04/05 512743 / A04[...]