User Manual

To set some parameter, press corresponding soft key, input the required value and select
the unit.
Enable channel output
Press CH1 button start channel 1 output quickly. Or enable output by pressing Utility
and then CH1 Setting . After channel output is opened, backlight of CH1 button is on,
and on the right side of channel information label, the font “OFF” changes to “QAM”,
meaning open channel output.
Figure 4-18 Use channel output
Check the shape of QAM modulation waveform through oscilloscope, which is shown in
the figure below:
69
Figure 4-19 Observe QAM waveform with oscilloscope