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then a prompt message "Invalid input" is displayed. Then, the latter defined edge item will be
replaced by X.
All Bits:
Press
All Bits to set the patterns of all trigger sources to the pattern settings selected
currently.
Trigger Condition:
Press When, then rotate the multifunction knob to select the trigger condition,
and then press down the knob to select it. You can also press When continuously or
enable the touch screen to select it.
• And: triggers when the pattern meets the logical AND condition.
• Or: triggers when the pattern meets the logical OR condition.
Trigger Mode:
In the trigger control area (Trigger) on the front panel, press to quickly switch
the current trigger mode. For details, refer to descriptions in "
Trigger Mode
".
Trigger Parameter Setting:
Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger
type. For details, refer to descriptions in "
Trigger Holdoff
" and "
Noise Rejection
".
Trigger LEVEL/Threshold Level:
Rotate the Trigger LEVEL knob to adjust the trigger level/ threshold level. Please
refer to descriptions in "
Trigger LEVEL/Threshold Level
". The current trigger level/
threshold level is displayed at the upper-right corner of the screen.
8.7.6 Duration Trigger
In duration trigger, the instrument identifies a trigger condition by searching for the
duration of a specified pattern. This pattern is a logical "AND" combination of the
channels. Each channel can be set to H (high), L (low), or X (don't care). The
instrument triggers when the duration (â–³T) of this pattern meets the preset time, as
shown in the figure below.
To Trigger the Oscilloscope
94
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