Triggering
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App
Index
6-1
IM 701310-01E
6.1 Setting the Trigger Mode
Procedure
1.
Press TRIG MODE/HOLD OFF.
2.
Press the appropriate trigger mode soft key.
Explanation
Auto mode
If the trigger condition is met before a 100-ms timeout, the DL9000 updates the displayed waveform
on each trigger occurrence. If not, the DL9000 automatically updates the displayed waveform. If the
time axis is set to a value that would cause the display to switch to roll mode, roll mode display will
be enabled (see page 2-6 for details).
Auto Level mode
If a trigger occurs before a timeout, the DL9000 updates the waveform in the same way as Auto
mode. If a trigger does not occur, the DL9000 detects the center value of the trigger source
amplitude, automatically changes the trigger to the center value, triggers on that value, and updates
the displayed waveform. Auto Level mode is valid when the trigger source is set to a channel from
CH1 to CH4. For all other cases, Auto Level mode operates in the same way as Auto mode.
If the time axis is set to a value that would cause the display to switch to roll mode, roll mode display
will be enabled.
Normal mode
The DL9000 only updates the waveform display when the trigger condition is met. If no triggers
occur, the display is not updated. If you want to view a waveform that the DL9000 cannot trigger on,
or if you want to check the ground level, use Auto mode.
Single mode
When the trigger condition is met, the DL9000 updates the displayed waveform once and stops
signal acquisition. If the time axis is set to a value that would cause the display to switch to roll
mode, roll mode display will be enabled. When a trigger occurs and the DL9000 acquires the
specified record length of data, the waveform display stops.
N Single mode
The DL9000 acquires signals each time the trigger condition is met for the specified number of
counts. Then, the DL9000 stops acquisition and displays the waveform of all acquired signals.
Note
• The trigger mode setting applies to all trigger types.
• The trigger conditions that were used to acquire the displayed signal appear at the lower
right of the screen.
Chapter 6 Triggering
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