Programming instructions

Chapter 8 Controlling Your Acquisition with Triggers
LabVIEW Data Acquisition Basics Manual 8-6
© National Instruments Corporation
In Figure 8-4, the analog trigger is set to start the data acquisition on the
rising slope of the signal, when the signal reaches 3.2.
Figure 8-4.
Diagram of an Analog Trigger
Figure 8-5 explains analog triggering for post-triggered data acquisition
using a timeline. You configure your DAQ hardware in LabVIEW to begin
taking data when the incoming signal is on the rising slope and when the
amplitude reaches 3.2. Your DAQ device begins capturing data when the
specified analog trigger conditions are met.
Figure 8-5.
Analog Triggering with Your DAQ Device
— — — — — — — — — — — — — — — — — — — — —
Level and Slope of
Signal Initiates Data Capture
3.2
0
Analog Trigger
Signal
Analog Data
DAQ Device waits until analog trigger
conditions are met. Then …
DAQ
Device
External
Device
DAQ
Device
External
Device