English: The amplifier Automatic test system、The amplifier Automatic test equipment
The test parameters of the amplifier are as follows： 1.Enter in the Factory test mode 2.NTC test 3.collect the power voltage and power current 4.Control and generate the sine wave of the sound 5.Test the front sound box or The front speakers，test the middle speaker，test the surround speaker、Peak to peak value、THD+N、Crosstalk test
The testing process： Turn on the power switch. the programmable power supply outputs the power voltage to the UUT，Let UUT to enter the factory test mode，Enter factory test mode and check the DC voltage or check the current at the same time. computer sends commands to control and play 100HZ,1KHZ,10HZ of the sine wave signal to the DUT.they sends commands to get their desired signal，using the signal to test the sound of the channel. computer automatically control all the test process, includes the data collection and UUT must be placed on the fixture by operator, and then the computer can completed all the paremeter collection and if a product don't pass the test, the failed information will be immediately displayed on the screen . and then computer reports the test data to generate data record it on the hard disk.because must scan the barcode before the Measure. 因为有扫条码在测试时，所以记录的结果也可以出货后查询。 用到的设备有：电脑，条码扫描仪，串口卡，可编程DC电源，可编程AC电源，测试夹具，测试机柜，PCI220，控制板卡，继电器卡,DAQ数据扩展卡，HP8903音频分析仪....本测试系统测试效率快，测试准确性高......
