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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.
Pattern Setting
The following five patterns are available:
• 1: sets the pattern of the channel selected to "1", i.e. the voltage level is higher
than the trigger level of the channel.
• 0: sets the pattern of the channel selected to "0", i.e. the voltage level is lower
than the trigger level of the channel.
• X: sets the pattern of the channel selected to "X", i.e. this channel is not used as a
part of the pattern. When all channels in the pattern are set to "X", the
oscilloscope will not trigger.
•
: sets the pattern to the rising edge of the channel selected.
•
: sets the pattern to the falling edge of the channel selected.
The Left/Right arrow key indicates moving left/right to switch the channel pattern.
"All" indicates all bits. Select a pattern for a channel and then click or tap
All. The
patterns of all the other channels will be set to the currently selected pattern.
Only one edge (rising or falling edge) can be specified in the pattern. If one edge item
is currently defined and then another edge item is defined in another channel in the
pattern, then a prompt message "Invalid input" is displayed.
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.
Trigger Level
Click or tap the
Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger 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.
Triggering the Oscilloscope
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved. DHO800 User Guide
77
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