G.R.A.S. AL0030 Production Line Acoustic Test Chamber

Self Insertion Loss: >25 dB
CCP Microphone set

Introduction

The G.R.A.S. AL0030 Production Line Acoustic Test Chamber is an anechoic test chamber for acoustic production line testing of mobile devices, for example cell phones, tablets, bluetooth speaker systems and similarly sized portable acoustic devices. It provides a flexible platform that can be configured to suit specific requirements.

Design

It is built from medium density fibre board lined with acoustic damping material. A large opening at the back of the chamber allows easy access to the chamber for configuring the test setup. The chamber has shock and vibration absorbing feet that prevent vibration from the outside from influencing the measurements.

It has a drawer with multi-adjustable holders for easy and safe mounting and removal of the Device Under Test. It can hold small and medium sized portable devices up to 300 x 200 mm (12 x 8 inches).

The test chamber has 4 fixing points for microphones and sound source, 2 at the top and 2 at the bottom panel. Holders for a total of 4 microphones and/or sound sources can be mounted at these fixing points. Additionally, a microphone can be attached to the drawer.

A connector panel with 4 BNC connectors, 2 USB, and 2 Mini DIN connectors provides connections to external instruments.

A Flexible and Configurable Test Platform

 AL0030 provides a flexible test platform that can be configured to suit specific needs. 

  • The basic configuration includes user selectable accessories for immediate acoustic testing.
  • Additionally, the test chamber can be fittet with a sound source and an artifial ear.
  • If you have needs that are not covered by these options, we can customize it to suit your specific needs. Contact (your local) GRAS (representative) to initiate the process.

As standard the AL0030 comes with a basic suite of accessories needed for audio response testing. The following are included:

  • The Acoustic Test Chamber
  • Choice of one microphone set
  • Choice of a set of  DUT holders
  • Choice of one microphone holder
  • One standard input connector panel
  • One cable for the microphone set

The connector plate can be ordered blind for customization.

Included and optional accessories for AL0030 are listed under the tab Ordering info.

Quality and warranty

The Acoustic Test Chamber is covered by a two year warranty. For cables and accessories, the warranty for the specific item is valid.

Connector type BNC
Weight g / oz 39 kg

Self Insertion Loss measured in reverberant conditions

G.R.A.S. Sound & Vibration reserves the right to change specifications and accessories without notice.

Included items

G.R.A.S. AL0030

Acoustic Test Chamber

G.R.A.S. AA0079

Microdot-BNC cable, 1 m

 

Included Items - user selections

Reference Microphone

G.R.A.S. 46BL

1/4" CCP Pressure Standard Microphone Set, High Sensitivity

G.R.A.S. 46BD

1/4" CCP Pressure Standard Microphone Set

G.R.A.S. 46BE

1/4" CCP Free-field Standard Microphone Set

 

Microphone Holder

G.R.A.S. OP0040

Microphone Holder for top/bottom mounting

G.R.A.S. OP0041

Microphone Holder for mounting in the drawer

 

DUT holders - one set of 4

G.R.A.S. OP0030

DUT Holder, low placement, small

G.R.A.S. OP0031

DUT Holder, low placement, large

G.R.A.S. OP0032

DUT Holder, top placement

 

Connector Panel

G.R.A.S. OP0050

Standard Panel with 4 x BNC, 2 x USB, 2 x 4-pin Mini DIN

G.R.A.S. OP0051

Blank panel for customization by customer

G.R.A.S. OP0070

Customized panel

 

Optional Items - not included

Sound Source

G.R.A.S. 44AA

Mouth Simulator according to ITU-T Rec. P51 with built-in power amplifier

G.R.A.S. 44AB

Mouth Simulator according to ITU-T Rec. P51

 

Sound Source Holder

G.R.A.S. OP0045

Sound Source Holder with swiwel head

G.R.A.S. OP0046

Sound Source Holder with swiwel head, heavy duty version

 

Ear Simulator

G.R.A.S. 43AH

CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 Low-leak

G.R.A.S. 43AI

CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 High-leak

 

Cables

G.R.A.S. AA0032

BNC-BNC Cable, 0.5 m

G.R.A.S. AA0033

BNC-BNC Cable, 1 m

G.R.A.S. AA0034

BNC-BNC Cable, 2 m

G.R.A.S. AA0035

BNC-BNC Cable, 3 m

G.R.A.S. AA0070

Microdot-BNC cable, 3 m

G.R.A.S. AA0073-CL

Customized Length Microdot - BNC Cable

 

Miscellaneous

G.R.A.S. OP0061

Set of 2 drawer latches

G.R.A.S. 12AL

1-Channel CCP Power Module with A-weighting filter

G.R.A.S. 12AX

4-Channel CCP Power Module with Gain

G.R.A.S. 42AP

Intelligent Pistonphone, Class 0

G.R.A.S. 42AB

Sound Calibrator, Class 1

G.R.A.S. Sound & Vibration reserves the right to change specifications and accessories without notice.