DF4211 Oscilloscope Usage Examples

　　1. Connect the power cord to the power socket on the rear panel of the instrument.

　　2. Press the power button on the front of the oscilloscope and the power indicator light will turn on.

　　3. After a while, turn the Focus, Sight and Brightness knobs to approximately the middle position.

　　4. Set the coupling mode selection switches of channel B and channel A to the “GND” position.

　　5. Slowly adjust the vertical shift knob and horizontal shift knob of the F1 channel and the R2 channel until two horizontal scan lines appear on the screen.

　　6. Connect the reference signal to the input port of Fl through the input cable and press the 10 V button of the reference signal.

　　7. Slowly change the voltage attenuation knob of channel ⒕ until the amplitude of the displayed signal waveform is moderate.

　　8. Slowly change the scanning speed knob until several complete square wave traces are observed on the screen.

　　9. After the above is completed, the amplitude, period and frequency of the reference signal can be roughly estimated based on the y-axis voltage attenuation and scanning speed.