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Data Type
Select the effective pattern of the data signal in the
Data Type item. It can be set to H
(high level) or L (low level).
Trigger Condition
Set the Setup/Hold trigger condition in the
When item.
• Setup: the oscilloscope triggers when the setup time is smaller than the
specified setup time. After selecting this type, click or tap the input field of
Setup to set the setup time with the pop-up numeric keypad. You can also use
the corresponding multipurpose knob to set the value.
• Hold: the oscilloscope triggers when the hold time is smaller than the specified
hold time. After selecting this type, click or tap the input field of Hold to set the
hold time with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to set the value.
• Setup/Hold: the oscilloscope triggers when the setup time or hold time smaller
than the specified time value. After selecting this type, click or tap the input field
of
Setup and Hold respectively to set the setup and hold time with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the values.
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.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to adjust
level A/level B or use the trigger level knob to adjust the level (the focus of the trigger
level knob is the last modified level). For details, refer to descriptions in
Trigger Level
.
The current trigger level is displayed in the trigger information label at the top of the
screen.
8.7.12 Nth Edge Trigger
The Nth edge trigger lets you to trigger on the Nth edge that occurs after a specified
idle time. For example, in the waveform as shown in the figure below, the instrument
should trigger on the second rising edge after the specified idle time (the time
Triggering the Oscilloscope
DHO800 User Guide
92
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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