User Manual

5.14. Selecting AC-coupling
After a reset, the Oscilloscope is dc-coupled so that ac and dc voltages appear on the screen, Use
ac-coupling when you wish to observe a small ac signal that rides on a dc signal. To select ac-coupling, do
the following:
1. Press MENU key and the function menu appear at the right side of the screen.
2. Press MENU ▲ or MENU ▼ key to select the CH1 Setting. Four items selectable are visible at the
bottom of the screen.
3. Press the F1 key and jump to AC. The bottom left side of the screen displays the ac-coupling icon.
Now, you can see a screen that looks like the following Figure.
Figure 16: AC-Coupling
5.15. Reversing the Polarity of the Displayed Waveform
To invert the input CH1 waveform, do the following:
1. Press the MENU key and the function menu appears at the right side of the screen.
2. Press the MENU ▲ or MENU ▼ key to select CH1 setting. Four items selectable are displayed at the
bottom of the screen.
3. Press F4 key to jump to Inverted. The inverted waveform of CH1 is displayed on the screen.
Now, you can see a screen that looks like the following Figure.
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