Burst History
The Burst History DataMode stores one or more bursts of data when a user-defined triggering event occurs. The Burst History DataMode is useful for characterizing rare events at high data sampling rates. The system uses a circular buffer to allow storage of data both before and after the specified trigger.
Screenshot
Generic parameters
- Name: Each DataMode must have a unique name and contain valid characters (invalid characters are single and double quotes, '\', '@', '#', '&', '<', '>').
- Description: Optional detailed description of the DataMode.
- Trigger mode: Select one of four available triggering options. Use triggering to eliminate undesired segments of the input data stream before it is processed by the DataMode.
- Always on: Do not use triggering. Data sampling is always on from the start of the test.
- Trigger: Data sampling starts when the trigger channel becomes TRUE and runs until the end of the data stream.
- Gate: Data sampling occurs if and only if the trigger channel is TRUE.
- One shot: Take a single data sample when the trigger channel transitions from FALSE to TRUE or if the trigger channel is TRUE on the first sample of any run.
- Trigger channel: Specify the trigger input when using a trigger option other than Always on. The trigger channel must have the same sample rate as the input channels.
- Channel select: From the channels list, select the desired input channels for the DataMode and click the appropriate arrow. Alternatively, drag and drop the desired channels to the appropriate list.
Trigger Time
Specify the Pre trigger time, which is the period of time in seconds of data sampling before the trigger.
Specify the Post trigger time, which is the period of time in seconds of data sampling after the trigger.
NOTE
The total number of samples stored is the sum of the post-trigger and pre-trigger samples plus one, since the trigger sample is always stored.