User Manual

RIGOL Chapter 5 To Trigger the Oscilloscope
5-36 MSO2000A/DS2000A User’s Guide
Setup/Hold Trigger
In setup/hold trigger, you need to set the data signal line and clock signal line. The
setup time starts when the data signal passes the trigger level/threshold level and
ends at the coming of the specified clock edge; the hold time starts at the coming of
the specified clock edge and ends when the data signal passes the trigger
level/threshold level again (as shown in the figure below). During the setup or hold,
the data signal must remain a valid pattern. The oscilloscope triggers when the setup
time or hold time is lower than the preset time.
T1
T2
Data Source
Clock Source
T2
T1
is the setup time
is the hold time
The edge type is
The data type is H
Figure 5-12 Setup/Hold Trigger
Trigger Type:
Press Type to open the trigger type list. Rotate and press down to select
“Setup/Hold”. At this point, the trigger setting information as shown in the figure
below is displayed at the upper right corner of the screen. For example,
. The trigger type is setup/hold trigger; the trigger source is CH1;
the trigger level is -1.80 V.
Source Selection:
Press DataSrc and ClkSrc to set the signal sources of the data line and clock line
respectively. They can be set to CH1, CH2 or any channel of D0-D15. For the details,
please refer to the introduction in “
Trigger Source”. The current trigger source is
displayed at the upper right corner of the screen.
Note: Select channel with signal input as trigger source to obtain stable trigger.