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当电视机的伴音出现故障时,用ET521A表检修电视机的伴音部分非常方便。打开ET521A表电源开关,将控能开关放在OSC档,然后按下编码开关2s左右,松开按健,屏幕弹出一个窗口,按F1打开信号源,按F2选择正弦波,再旋转编码开关选择频率1kHz,选择好后,按F5确认。弹出的窗口退出,在波形显示区的左上角,有一符号显示出正弦波1kHz。
When the sound of the TV breaks down, it is very convenient to overhaul the audio part of the TV with the ET521A. Open the ET521A table power switch, the control switch on the OSC file, and then press the code switch 2s or so, release by health, the screen pops up a window, press F1 to open the signal source, press F2 to select the sine wave, then turn the code switch selection Frequency 1kHz, select a good, press F5 to confirm. The pop-up window will exit. In the upper left corner of the waveform display area, a symbol shows a sine wave of 1kHz.