User Manual

Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-11
Pulse Trigger
In pulse trigger mode, the oscilloscope will trigger when the pulse width of the input
signal satisfies the specified pulse width condition.
Trigger Type:
Press Type, rotate to select “Pulse” and press down . At this point, the trigger
setting information is displayed at the upper right corner of the screen. For example,
. The trigger type is pulse trigger; the trigger source is CH1; the trigger
level is 0.00 V.
Source Selection:
Press Source and select CH1, CH2, EXT 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.
Pulse Condition:
In this oscilloscope, positive pulse width is defined as the time difference between
the two crossing points of the trigger level and positive pulse; negative pulse width is
defined as the time difference between the two crossing points of the trigger level
and negative pulse, as shown in the figure below.
Figure 5-3 Positive Pulse Width/Negative Pulse Width
Press When to select the desired pulse condition.
 : trigger when the positive pulse width of the input signal is greater than
Positive
pulse width
Trigger level
Trigger level
Negitive
pulse width
A
B
A
B