Rigol DS2000E Series, Руководство пользователя, Страница: 116 / 283

RIGOL Chapter 5 To Trigger the Oscilloscope
5-34 DS2000E User’s Guide
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 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 or CH2. 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.
Edge Type:
Press Slope to select the desired clock edge type and it can be set to the rising edge
(
) or falling edge ( ).