RIGOL DS6000 Series - Manual (Page 95)

5 To Trigger the Oscilloscope RIGOL
DS6000 User’s Guide 5-3
Trigger Mode
Trigger mode would influence the mode in which the oscilloscope searches for trigger
event. The following is the schematic diagram of the acquisition memory from which
you can see that the position of the trigger event is determined by the reference time
point and the delay setting.
Pre-trigger/ Delayed trigger:
Acquire data before/after the trigger event. The trigger position is usually at the
horizontal center of the screen. In full-screen display, you can view seven-grid
pre-trigger and delayed trigger information. You can adjust the horizontal position of
the waveform through HORIZONTAL POSITION to view more pre-trigger
information and delayed trigger information, through which to know the signal
information before/after the trigger (e.g. capture the glitch generated by the circuit
and analyze the pre-trigger data to find out the reasons for generating glitch).
Press MODE in the trigger control area (TRIGGER) at the front panel or through the
MENU  Mode menu to select the desired trigger mode. The corresponding status
light of the mode currently selected turns on.
Pre-trigger Buffer Post-trigger Buffer
Trigger Event
Acquisition memory
MODE