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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 the voltage level is
higher than the preset high trigger level.
•
Falling: triggers on the falling edge of the input signal when the voltage level is
lower than the preset low trigger level.
•
Either: triggers on the rising or falling edge of the input signal when the voltage
level meets the preset trigger level.
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.
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 level A. When Linkage is ticked,
the upper limit and lower limit values change at the same time. The difference
between upper and lower limit remains unchanged. For details, refer to
The current trigger level is displayed in the trigger information label at the top of the
screen.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
Trigger Mode
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
. The selected trigger source is indicated in the trigger information
.
Triggering the Oscilloscope
Trigger Level
HDO4000 User Guide
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