RIGOL DG4000 Series - Manual (Page 65)

Chapter 2 Basic Waveform Output RIGOL
DG4000 Series User’s Guide 2-9
Align Phase
DG4000 series dual-channel generators enable to align the phases of the two
channels. Pressing down this softkey will re-configure the two channels, and
enable the generator to output with specified frequency and start phase.
For two signals whose frequencies are the same or in multiple, this operation will
align their phases. For example, assume a sine waveform (1kHz, 5Vpp, 0 °) is
output from CH1, while another (1kHz, 5Vpp, 180°) from CH2. Use an oscilloscope
to sample and display the two signals, and then toggle the channel output switch
of the generator, you will see that the waveforms shown on the oscilloscope do not
always have a phase deviation of 180°. At this point, press Align Phase on the
generator and the waveforms shown on the oscilloscope will have a phase
deviation of 180° without any adjustment of the start phase of the generator.
Figure 2-1 Before Aligning Phase
Figure 2-2 After Aligning Phase
CH1
CH2
CH1
CH2