Measurement Computing PCI-DAS6071 - Manual (Page 25)

PCI-DAS6071 User's Guide Functional Details
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Gate Below
Data acquisition is enabled whenever ATRIG goes below the THRESH_LO level. Acquisition is suspended
whenever the ATRIG signal goes above the THRESH_LO level. This is a level-sensitive gating mode.
Figure 22. Gate Below
Gate Negative Hysteresis
Data acquisition is enabled whenever ATRIG goes above the THRESH_HI level. Acquisition is suspended
whenever the ATRIG signal goes below the THRESH_LO level. The hysteresis level is set by THRESH_LO.
This is a level-sensitive gating mode.
Figure 23. Gate Negative Hysteresis