For displaying combined waveform of CH1and CH2 input signals on the CRT screen. However, when CH2 is set at INVERT, the difference between CH1 and CH2 will be displayed.

• 可使示波器显示CH1和CH2信号的加成合成波形CH1+CH2.；但当CH2的INVERT(23)钮被按下；使CH2的输入信号被设定为反相模态；则可以显示CH1和CH2两输入信号间的差值；及显示波形CH1-CH2的相消结果