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
. The selected trigger source is indicated in the trigger information
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 Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Triggering the Oscilloscope
DHO800 User Guide
86
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