Programming instructions

Chapter 8 Controlling Your Acquisition with Triggers
© National Instruments Corporation 8-9 LabVIEW Data Acquisition Basics Manual
Figure 8-7.
Timeline of Conditional Retrieval
Signal Checked for
Trigger Conditions
Rest of Data
When trigger conditions are met (at Scan 4) …
When Offset = 0
When Offset < 0
When Offset > 0
Scan
2
Scan
3
ScanScan
1
Scan
4
read/search position
External
DAQ
Device
Device
Scan
2
Scan
3
ScanScan
1
Scan
4
Offset
read/search position
Start reading data
Scan
2
Scan
3
Scan
Scan
1
Scan
4
Offset
Start reading data
read/search position
Start reading data
Scan
5
Scan
6
Scan
7
Scan
8
Scan
5
Scan
5
Scan
6
Scan
6
Scan
7
Scan
7
Scan
8
Scan
8