Measurement-computing Personal Daq rev.6.0 Bedienungsanleitung Seite 58

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4-16 Personal DaqView
989394 Personal Daq User’s Manual
The Trigger Section
The following figure depicts the parts that make up an acquisition. Together, the pre-trigger and
post-trigger make up a trigger block.
Pre-trigger Post-trigger time
By duration or number of scans by duration, number of scans,
or manual stop
Tr
i
gg
er Block
Trigger Stop Event
Configure Acquisition
As can be seen in the previous figure, it is relatively simple to configure an acquisition. Tabs allow you to
select each of the three trigger aspects (Trigger, Pre-Trigger, and Post-Trigger) for configuration.
Averaging
The “Averaging” section of the dialog box is used to enable a block averaging mode and to select the size
of the scan block. Block averaging is enabled by using the Type list box (available selections are None or
Block Averaging). Averaging is available in scan blocks of 2, 4, 8, 16, and 32. The block number is
chosen from the Count pull-down list. When enabled, the selected block averaging is applied to each of
the scan group’s analog input channels. Note that programmers can enable averaging via the
daqAdcSetFilter function with filterType set to DaftSWAvg. For additional information you can refer
to
daqAdcSetFilter in Appendix B.
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