Source Selection
Click or tap the Source drop-down button to select CH1-CH4 or D0-D15. 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. The
corresponding patterns are displayed at the top of the screen, representing the
patterns of channels CH1-CH4 and D0-D15 from left to right, as shown in the figure
below. The patterns of D0-D15 are displayed only when the digital channel probe is
connected.
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.
Triggering the Oscilloscope
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved. DHO900 User Guide
77
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