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Summary of Contents for GRAS AL0030
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Page 1: Instruction Manual
Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber LI0071 - 21 June 2019... - Page 2 © 2014-19 GRAS Sound & Vibration A/S http://www.gras.dk Any technical documentation that is made available by GRAS is the copyrighted work of GRAS and is owned by GRAS The content in this document is subject to change without notice. GRAS Sound & Vibration A/S is not liable or responsible for any errors or inaccuracies that may appear in this document.
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Page 3: Table Of Contents
Technical Specifications ........................... 12 Acoustic Test Chamber ............................12 Reference Microphones .............................13 Mouth Simulators 44AA and 44AB .........................13 Calibration, Service and Warranty ......................14 Calibration ................................14 Warranty .................................14 Service and Repairs ............................14 Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 3... -
Page 4: Introduction
Introduction The GRAS AL0030 Production Line Acoustic Test Chamber is an anechoic test chamber for acoustic production line testing of mobile devices such as smart phones, tablets and similarly sized portable acoustic devices. It provides a flexible platform that can be configured to suit specific requirements. -
Page 5: Ordering Information
Ordering Information AL0030 is a flexible platform that you can configure to suit your needs. The basic package consists of the test chamber and selectable microphone sets and fittings for immediate audio response testing. These are listed below. Additionally, the test chamber can be fitted with an array of options, e.g. sound source and artificial ear - to suit your needs. -
Page 6: Optional Accessories
Set of 2 Drawer Latches OP0061 1-Channel CCP Power Module with A-weighting filter 12AL 4-Channel CCP Power Module with Gain 12AX Intelligent Pistonphone, Class 0 42AP Multifunction Sound Calibrator 42AG Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 6... -
Page 7: Description
(Bottom foam lining not shown for clarity) Fig. 1. Inside view of the AL0030 with one side panel removed. The rails for the drawer are not shown for clarity. Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 7... -
Page 8: The Drawer
5 mm steps with 5 mm steps Fig. 2. The drawer and its fittings for holding the DUT. The drawer is shown without its telescopic mounting and sealing strip. Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 8... -
Page 9: Accessories For Mounting
Accessories for Mounting AL0030 comes with accessories for flexible mounting of DUT and test equipment. The DUT can be mounted at two different heights in the drawer. The test chamber has up to 4 mounting points for microphone sets and a sound source. - Page 10 Holder for Chamber-mounted Microphones and Sound Source The AL0030 has four mounting points for microphones and sound source, two at the top and two at the bottom. They allow for adjustment of horizontal and vertical position as well as angle. These adjustments make it possible to position the microphone(s) and sound source in virtually any posi- tion in relation to the DUT.
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Page 11: The Microphone Set
The Microphone Set The AL0030 can be delivered with either of these three microphone sets: • 46BL 1/4" CCP Pressure Standard Microphone Set, High Sensitivity. • 46BD 1/4" CCP Pressure Standard Microphone Set. • 46BE 1/4" CCP Free-field Standard Microphone Set. -
Page 12: Technical Specifications
AL0030 is specified to work as intended up to 20 kHz. However, with 46BD or 46BE, it is possible to measure well above this upper limit. There is no reason why it could not be used up to for example 40 kHz, however, we have not investigated its properties above 20 kHz, which therefore is the upper limit of the recommended useful frequency range. -
Page 13: Reference Microphones
100 to 16 kHz 100 dB Loudspeaker 8Ω /20 W (max) Gain (44A only)* Power Supply 24 Vdc Weight *44A has a built-in amplifier, 44AB requires external amplification. Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 1 3... -
Page 14: Calibration, Service And Warranty
2002/96/EC RoHS directive: 2002/95/EC GRAS Sound & Vibration continually strives to improve the quality of our products for our customers; therefore, the specifications and accessories are subject to change. Instruction Manual GRAS AL0030 Production Line Acoustic Test Chamber | 1 4...
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