Lenze 8400 StateLine - Manual (Page 478)

10 Oscilloscope function
10.3 Operation
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Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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10.3.3 Defining the trigger condition
The trigger condition serves to define the starting time of recording in the 8400 StateLine. The
oscilloscope provides various trigger conditions by means of which recording of the measured
values can be controlled.

If the Cursor tab is selected, click the Trigger tab to show the input fields for configuring the
trigger condition.
Setting Function
Source Selection of trigger source:
Channel The oscilloscope triggers on a channel configured in the Vertical channel settings list field.
Force trigger No trigger condition, recording starts immediately after the start.
Trigger value Value from which on triggering is activated.
Delay Delay between recording and trigger event.
Pre-trigger Select a negative delay time to detect signals prior to the trigger event.
• In the oscillogram, the trigger time is marked by a dashed line.
• When triggering on occurrence of an event, it is thus possible to detect the values that
have caused the event.
Post-trigger Select a positive delay time to detect signals occurring a certain time after the trigger event.
Edge Three trigger modes are available:
Positive edge For trigger activation, the selected trigger value must first be fallen short of and then be
exceeded.
Negative edge For trigger activation, the selected trigger value must first be exceeded and then be fallen
short of.
Change For triggering on a BOOL variable:
• Trigger activation requires a state change.
For triggering on a different variable:
• For trigger activation, the current value must be different than the last value.
Trigger event
Trigger
delay
(negative)
Trigger level
Trigger event
Trigger
delay
(positive)
Trigger level