RIGOL
User‟s Guide for DS1000CA Series
2-29
To Set Up the Trigger System
The trigger determines when the oscilloscope starts to acquire data and display a
waveform. When a trigger is set up properly, it can convert unstable displays or
blank screens into meaningful waveforms.
When the oscilloscope starts to acquire a waveform, it collects enough data so that it
can draw the waveform to the left of the trigger point. The oscilloscope continues to
acquire data while waiting for the trigger condition to occur. After it detects a trigger,
the oscilloscope continues to acquire enough data so that it can draw the waveform
to the right of the trigger point.
Press MENU button to enter trigger system setting interface.
Figure 2-34 Trigger controls
DS1000CA provides five trigger modes: Edge, Pulse, Slope, Video and Alternative.
Edge:
An edge trigger occurs when the trigger input passes through a specified
voltage level in the specified slope direction.
Pulse:
Use this trigger type to catch pulses with certain pulse width.
Video:
Use video trigger on fields or lines for standard video signals.
Slope:
The oscilloscope begins to trigger according to the signal rising or falling
speed.
Alternative:
Trigger on non-synchronized signals.
