G.R.A.S仿真耳45CA
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| 所在地: | 广东深圳市 |
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详细信息
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Hearing-pr*tector Test Fixture Type 45CA
*roduct Dat* and Specifications
Typ*c*l **plications/featu*e*
■ IS* 4869-3 Acoustic *est fixture
■ *estin* ear-muff type protectors
■ Insertion-loss m*asurem*nts
■ Binaural measurements
■ Mona*r*l measure*en*s
The G.*.*.S. Hearing-prot**tor Test Fix*ure Type ing-pro*ect*on dev*c*s such a* ear plugs and ear muf*s (s*pra-aural as wel* ** circum-au*al).
It conforms w*th ISO 486*-3 and can be u*ed with |
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one 1 or tw* 2: • W*1P or WS2P micro*hones res*ec*ively 1-i**h or ½-inc* (wi*h adapter) • IE* 6**18 Ear Si*ulators (RA0039)
I* c*n also be fit*ed with IEC 6*711 Ear Simulator* (RA0*45) and a range *f mo*ld*d-rub*er KEMAR E*rs *o* testing e*r pl*gs.
The Test Fix*ure is mounted on a resilient ba*e which reduces *h* n*i*e ?o*r to a *ini**m in a typical tes* s*tuat*on.
Fig. 2 sho*s a block **a*ram of a set-up for testin* a pair *f *ar-protec**o* muf*s.
Specific*tions |
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Buil* *n accord*nce wit*:
(can also b* used *or binaur*l testin*) Acces*ories inc**ded: |
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ISO 48*9-3 |
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GR1079 GR09*4
Fi*. 1 *earing-protector Te*t *ixture *ype *R1079 **d Acoustic cup GR0974 |
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Fig. * shows a p*ir of moulded-rubber KEMA* ears.
I*O *869-3 (sect*on acoutic iso*ation for the test fixtu*e. For chec*ing *h*s in th* case of the Type 45CA, *n Acoustic *up **0974 an* Acous*ic plu* G*1079 (*ee Fig. 1) are includ*d wi*h the Type 45CA. |
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1 G.R.A.S仿真耳45CA
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