Audio Performance Laboratory

The audio test is basically carried out on the basis of the excitation response, that is, the excitation signal of known characteristics is added to the input end of the DUT, the signal characteristics of the output end of the DUT are measured, and the signal characteristics of the output end of the DUT are measured, so as to compare with the signal at the input end. The signal degradation at the output is used to judge the audio performance of the DUT. Of course, the excitation signal can be directly output by an audio analyzer (such as American AP, domestic ABTECA2, etc.), or can be tested by playing a standard test signal directly on the DUT.

In audio testing, the most commonly used stimulus signal is a sine wave signal, because this signal concentrates the energy to a point in the spectrum Q, so comparative testing is relatively simple. In daily testing, multiple sine waves or noise are also used for testing.

Introduction

Introduction to testing capabilities

In addition to security risks

Assist customers to eliminate safety hazards in the product design stage, such as circuit clearance, creepage distance, safety isolation, etc., evaluate structural design, and avoid the loss of mold modification
Provide an audit report

Conduct electrical testing, structural evaluation, and provide audit reports at the beginning of product certification
Assistance with certification

Assisting customers to communicate with certification bodies and customers to perform the application of document operations can save application time and reduce customers' troubles in the certification application process

Equipment

Equipment introduction

The laboratory has purchased foreign professional measuring equipment, including: ESR7 (R&S), Schwarzbeck (VULB9168, 9120D), Noiseken (ESS-2002) and other high-precision test equipment, according to domestic and foreign electromagnetic compatibility standards, the construction of 966 semi-electric anechoic chamber and all-electric anechoic chamber, to ensure the accuracy and reliability of the test.