Rigol DHO900 User Manual page 100

Triggering the Oscilloscope
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the Source drop-down button to select CH1-CH4. For details, refer to
Trigger Source
label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the input signal edge (in the Slope item) on which the oscilloscope triggers.
• Rising: triggers on the rising edge of the input signal when Position condition is
met.
• Falling: triggers on the falling edge of the input signal when Position condition
is met.
• Either: triggers on the rising or falling edge of the input signal when Position
condition is met.
Trigger Position
After selecting the window type, specify the time point of trigger by selecting the
trigger position (in Position item).
• Enter: triggers when the input signal enters the specified trigger level range.
• Exit: triggers when the input signal exits the specified trigger level range.
• Time: triggers when the accumulated hold time since the input signal entered
the specified trigger level range is equal to the window time. After you select
this type, click or tap the input field of Time to set it by using the pop-up
numeric keypad. The available range is from 1 ns to 10 s.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Parameter Setting
You can refer to
noise rejection under this trigger type.
DHO800 User Guide
86
. The selected trigger source is indicated in the trigger information
Trigger Mode
.
Trigger Holdoff Noise Rejection
and
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to set the trigger holdoff and