Advantech iDAQ-801 handleiding
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15 iDAQ-801_841 User Manual
Chapter 3 Function Details
3.2 Buffered Analog Input Configuration
3.2.1 One-buffered Acquisition
For one-buffered acquisition, only a specified number of samples is acquired. The
start or stop of acquisition can be controlled by a software command or a hardware
signal. Three types of acquisitions can be achieved: post-trigger acquisition, pre-trig-
ger acquisition, and about-trigger acquisition.
3.2.1.1 Post-Trigger Acquisition
A post-trigger acquisition acquires a specified number of samples after the start trig-
ger. The acquisition starts when a start trigger is received and automatically stops
when the specified number of samples is acquired. An example of 5-sample post-trig-
ger acquisition is shown in Figure 3.5.
Figure 3.5 Post-trigger acquisition.
The start trigger can be a software command or a hardware signal. If a hardware sig-
nal is used as the start trigger, the start of acquisition can be delayed for a specified
number of sample clock cycles after a start trigger is received. Figure 3.6 shows an
example of a 2-sample delay post-trigger acquisition. Refer to the device specifica-
tions for possible signal sources.
Figure 3.6 Post-trigger acquisition with delay.
3.2.1.2 Pre-Trigger Acquisition
A pre-trigger acquisition acquires a specified number of samples before the stop trig-
ger. The acquisition is started by a software command and stopped when a hardware
stop trigger is received. Figure 3.7 shows an example of a 5-sample pre-trigger
acquisition. Only the samples in the shaded area are returned.
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Productinformatie
| Merk | Advantech |
| Model | iDAQ-801 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3491 MB |
