GRAS麦克风RA0038 1/2“2cc耦合器符合IEC 60318-5标准

GRAS RA0038 1/2“2cc耦合器符合IEC 60318-5标准

体积：2 cc 

ANSI：S3.7 

IEC：60318-5 

特殊功能：适用于1/2“压力话筒

技术

RA0038用于插入式助听器和耳机的声学测量。

它符合要求

IEC 60318-5（60126）2 cm 3耦合器，用于测量通过耳塞和耳塞耦合到耳朵的助听器和耳机

ANSI S3.7-1995美国国家耳机耦合器校准标准。

为避免可能损坏麦克风，RA0038可与配备其保护网格的麦克风配合使用，例如GRAS 40AG和合适的前置放大器，如GRAS 26AS，它是1/4英寸非常短的前置放大器，带有3米的集成电缆。

GRAS 40AG 1/2“外置偏光压力麦克风

频率范围：3.15 Hz至20 kHz 

Dyn范围：20 dBA至164 dB 

灵敏度：12.5 mV / Pa

RA0038也是GRAS 43AB人工耳的一部分。

上天不会辜负每一份努力和坚持

时光不会怠慢执着而勇敢的每一个人

当然 ，成功只青睐有准备的人

不过，懒人永远在为自己找借口

不求与人相比，但求超越自己

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GRAS 46BE 1/4" CCP Free-field Standard Microphone Set

Freq range: 4 Hz to 80 kHz

Dyn range: 35 dBA to 160 dB

Sensitivity: 3.6 mV/Pa

Use: For general acoustic diagnostics

Technology

Introduction

Through a close cooperation with our customers, we know that data-safety is highly important because the costs related to unsuited and unreliable sensors may determine whether your project turns into a success or not.

For our users, data safety translates directly into requests for easier microphone selection, simple system configuration and reduction of measurement errors.

To meet these requirements, we invented the microphone set concept. It is simple, reliable and robust and consists of a microphone cartridge and preamplifier combination, which is calibrated as one unit. This eliminates errors because there is only one sensitivity value to account for and the risk of contaminating the interface is eliminated. Combine this with our unique and proven design and you have the most reliable measurement microphone sets available in the industry today.

Typical applications and use

The 46BE is a free-field microphone set and as such optimized for all acoustic applications, where the location of the main sound source is known and the microphone can be pointed directly at it ensuring 0° incidence. However it should be noted that the small size of the 1/4" microphone body and diaphragm also enables pressure and random-incidence (diffuse field) measurements up to 20 kHz without removing the protection grid or need for further compensation. This all-use feature is very useful if you are not able to point out the nature of your sound field.)