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iDAQ-731_751_763D User Manual
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3.4.1.2
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 stops when a hardware
stop trigger is received. Figure 3.12 shows an example of a 5-sample pre-trigger
acquisition. Only the samples in the shaded area are returned.
Figure 3.12 Pre-trigger acquisition.
The stop trigger can only be a hardware signal. Refer to the device specifications for
possible signal sources.
3.4.1.3
About-Trigger Acquisition
An about-trigger acquisition is the same as a pre-trigger acquisition except that the
time when the acquisition stops can be delayed by a specified number of sample
clock cycles. Figure 3.13 shows an example of a 5-sample about-trigger acquisition
with 2 cycles of stop delay. Only the samples in the shaded area are returned.
Figure 3.13 About-trigger acquisition.
The stop trigger can only be a hardware signal. Refer to the device specifications for
possible signal sources.
Содержание iDAQ-731
Страница 1: ...User Manual iDAQ 731 iDAQ 751 iDAQ 763D Digital I O and Relay Industrial DAQ Modules ...
Страница 8: ...iDAQ 731_751_763D User Manual viii ...
Страница 11: ...Chapter 1 1 Start Using IDAQ 731 751 763D ...
Страница 16: ...iDAQ 731_751_763D User Manual 6 ...
Страница 17: ...Chapter 2 2 Installation and Field Application ...
Страница 28: ...iDAQ 731_751_763D User Manual 18 ...
Страница 29: ...Chapter 3 3 Function Details ...
Страница 42: ...iDAQ 731_751_763D User Manual 32 Figure 3 27 Streaming generation with retrigger ...
Страница 44: ...iDAQ 731_751_763D User Manual 34 ...
Страница 45: ...Appendix A A Specifications ...
Страница 49: ...39 iDAQ 731_751_763D User Manual Appendix A Specifications A 7 Function Block iDAQ 731 iDAQ 751 iDAQ 763D ...
Страница 50: ...iDAQ 731_751_763D User Manual 40 ...
Страница 51: ...Appendix B B System Dimensions ...
Страница 52: ...iDAQ 731_751_763D User Manual 42 B 1 iDAQ Modules ...
Страница 53: ...43 iDAQ 731_751_763D User Manual Appendix B System Dimensions ...