Measurement Computing WaveBook rev.3.0 - Manual (Page 130)

6-16 PostView WaveBook User’s Manual
It is possible for the data acquisition program to create files containing multiple timebases, pre-trigger, post-
trigger, and post-stop data. PostView accommodates all these features, as shown in the previous example
(taken from a ChartScan/1400 unit with the ChartView data acquisition program).
• If pre-trigger scans are available, they will be shown prior to the trigger point and labeled with
negative time numbers.
• If post-stop data is available (scans collected after the Stop Event), they are displayed after the Stop
Event marker.
• If a dual timebase was used when collecting the data, PostView will show a discontinuity in the time
axis when the timebase changes. When a dual timebase is used, the post-trigger scans are collected at
one frequency while the pre-trigger and post-stop scans are collected at another.
Note: Some timebase aspects may differ, depending on the actual data acquisition program used. Refer
to PostView’s Help File for timebase information relating to specific data acquisition programs.