IOtech MultiScan 1200, User Manual

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TempScan / MultiScan User's Manual Chapter 10: PostView 155
PostView Timebase
PostView automatically detects the data file’s timebase and typically displays the information in
hours/minutes/seconds/tenths (00:00:00.0 format) along the X-axis at the bottom of the PostView
window. PostView automatically displays milliseconds (ms) or micro-seconds (µs) when applicable to
acquisition programs which make use of such time scales. No user action is involved in regard to the
timebase display.
Example of a PostView Timebase
Note: For many data acquisition programs, the trigger point (t = 0) need not be the first point in the
data file.
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 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.
Data File Accessibility
PostView can access data files from the acquisition program at any time, even during the acquisition.
If PostView reaches the end of a file while the acquisition file is still collecting data, PostView will
automatically display the new data as it becomes available.
Note: For the fastest display of waveforms, select binary data storage (
.
iot
extensions) in the
acquisition program.
Note: Some data file 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.