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二、丹麥G.R.A.S(GRAS線纜)產(chǎn)品特點(diǎn):
GRAS麥克風(fēng)前置放大器都是小的,健壯的單元,優(yōu)化的聲學(xué)測量與電容麥克風(fēng)。它們都與標(biāo)準(zhǔn)iec61094測量麥克風(fēng),第4部分:工作標(biāo)準(zhǔn)麥克風(fēng)的規(guī)格;所定義的測量麥克風(fēng)兼容。
所有的GRAS前置放大器都是建立在一個(gè)小的,厚膜精度放大器,具有很高的輸入阻抗。外殼由不銹鋼制成,大強(qiáng)度和耐用性,對振動(dòng)和微音的靈敏度低。
他們將在他們的規(guī)格范圍內(nèi)工作,達(dá)到70的溫度??筛鶕?jù)要求提供溫度高達(dá)120度(248分)的特殊版本。溫度升高的影響是固有噪音水平的輕微提高。這將改變麥克風(fēng)/前置放大器的動(dòng)態(tài)范圍的下限,從而限制了測量非常低的聲壓級的能力。
三、丹麥GRAS麥克風(fēng)電纜主要產(chǎn)品:
AB0002 Mains/line power supply
GRAS AB0003 Mains/line power supply
GRAS AB0006 Mains/line power supply
GRAS AC0001 Calibration Control Box for 41AM/CNGRAS AE0003 Plug
GRAS AE1002 LEMO 7-pin panel connec tor
GRAS AB0005 Mains/line power supply
GRAS AB0006 Mains/line power supply
GRAS AC0001 Calibration Control Box for 41AM/CNGRAS AE0003 Plug
GRAS AF0008 Adapter for 1/4" preamplifier and 1/2" microphoneGRAS AG0001 Adapter for 7-pin LEMO to B&KSHARE PAGE
GRAS AG0002 CCP Input Adapter
GRAS AG0003 Adapter for CCP preamplifier to XLRGRAS AF0008 Adapter for 1/4" preamplifier and 1/2" microphoneGRAS AL0012 1/2" Microphone Holder, Stainless SteelGRAS AM0029 Pole adapter
GRAS AL0029 1/4" Microphone Holder, POM
GRAS AM0037 Transport protec tion cap
GRAS AM00 3 8 Multi spanner/wrench
GRAS AM0052 Complete Windscreen for 41AM/CN
GRAS AM0033 Tripod adapter
GRAS AM0071 Windscreen for 1/4" Microphones
GRAS AM0069 Windscreen for 1/2" Microphones
GRAS AM0009 Windscreen for 41AM/CN
GRAS AM0363 Windscreen for 1" Microphones