Microphone QC trường tự do GRAS 40PP-10 CCP

GRAS 40PP-10 CCP Free-field QC Microphone

Part Number: GRAS 40PP-10

Category: GRAS Sound & Vibration

Status: Available

Freq range: 10 Hz to 20 kHz
Dyn range: 33 dB(A) to 128 dB
Sensitivity: 50 mV/Pa

Sale Price: Liên hệ

0903368648

+84903368648

The GRAS 40PP-10 Production-Line Test Microphone is a robust, cost-effective microphone designed for use in the production-line testing of loudspeakers and acoustic transducers. It has a wide frequency range reaching up to 20 kHz and a large dynamic range from <33 dB(A) to 128 dB.

Technology

Typical applications and use

Production-line testing of drivers, receivers, and microspeakers
Sound-scape recording in array configurations
Multichannel measurements (analysis)

Design

The cost-effectiveness of the 40PP-10 is a key consideration when setting up multiple production lines. Close manufacturing tolerances provide the 40PP-10 with a high degree of interchangeability – a major advantage when used in production-line test setups.

The robust standard BNC connector of the 40PP-10 ensures an easy-to-handle setup and supports the use of standard RG58 cables all the way from the microphone to the input module.

The integrated CCP (Constant Current Power) preamplifier requires a constant-current power supply, such as the GRAS 12AL 1-Channel CCP Power Module with A-Weighting filter, or any other CCP compatible power supply or input module. The built-in TEDS (Transducer Electronic Data Sheet, according to IEEE 1451.4) chip provides information about the microphone that can be used by systems designed for use with TEDS.

Microphone Calibration

Calibration is easy with a GRAS pistonphone, such as the GRAS 42AA, together with a ¼" microphone adapter.

Before leaving the factory, GRAS products are tested and calibrated by GRAS, and an individual test certificate is included with the product.

GRAS Sound & Vibration continually strives to improve the quality of our products for our customers; therefore, the specifications and accessories are subject to change.

Specifications

Parameter	Unit	Value
Polarization / Connection	–	0 V / CCP
Frequency range (±1.5 dB)	Hz	50 – 5 k
Frequency range (±2 dB)	Hz	10 – 20 k
Dynamic range lower limit (microphone thermal noise)	dB(A)	<33
Dynamic range upper limit	dB	128
Set sensitivity @ 250 Hz (±2 dB)	mV/Pa	50
Power supply (Constant Current Power)	mA	2 to 20
Microphone venting	–	Front
Output impedance	Ω	<50
Temperature range, operation	°C / °F	-10 to 50 / 14 to 122
Temperature range, storage	°C / °F	-20 to 60 / -4 to 140
Influence of axial vibration @1 m/s²	dB re 20 µPa	55
TEDS (IEEE 1451.4)	–	27 v. 1.0
Connector type	–	BNC
CE / RoHS compliant / WEEE registered	–	Yes / Yes / Yes
Weight	g / oz	24 / 0.85