TriggerConstant('Expression','Level*','Epsilon*','DeadTime*')
Arguments
|
'Expression' |
Measured value |
|
'Level*' |
Value specifying the center line of the area in which the trigger should release |
|
'Epsilon*' |
Value specifying the distance of both area boundaries for the center line |
|
'DeadTime*' |
Time specification in seconds, for which the trigger condition must be fulfilled until release. If no delay is desired, the value 0 must be entered. |
Parameters ending with * are only evaluated once at the start of the acquisition.
Description
The function returns TRUE as long as 'Expression' remains within the area ['Level' - 'Epsilon', 'Level' + 'Epsilon'] for at least the duration of the 'DeadTime'.
Note |
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|---|---|
 |
The trigger signal is emitted (true) for the entire duration for which the level is exceeded or undershot. |
Example
The trigger should be released if the measured value is longer than one second in a range between 0.5 and 1.5.
Solution
In the figure below the blue curve shows the original signal and the red bar shows the released trigger.
