Справочник Пользователя для National Instruments NI PCI-6110
Chapter 4
Connecting Signals
4-18
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In edge-detection mode, the minimum pulse width required is 10 ns.
This setting applies for both rising-edge and falling-edge polarity settings.
Edge-detect mode does not have a maximum pulse-width requirement.
This setting applies for both rising-edge and falling-edge polarity settings.
Edge-detect mode does not have a maximum pulse-width requirement.
In level-detection mode, the PFIs themselves do not impose a minimum or
maximum pulse-width requirement, but the particular timing signal being
controlled can impose limits. These requirements are listed later in this
chapter.
maximum pulse-width requirement, but the particular timing signal being
controlled can impose limits. These requirements are listed later in this
chapter.
DAQ Timing Connections
The DAQ timing signals are TRIG1, TRIG2, STARTSCAN, CONVERT*,
AIGATE, SISOURCE, SCANCLK, and EXTSTROBE*.
AIGATE, SISOURCE, SCANCLK, and EXTSTROBE*.
Posttriggered data acquisition allows you to view only data that is acquired
after a trigger event is received. A typical posttriggered DAQ sequence is
shown in Figure 4-9. On the NI PCI-6110/6111, each STARTSCAN pulse
initiates one CONVERT* pulse.
after a trigger event is received. A typical posttriggered DAQ sequence is
shown in Figure 4-9. On the NI PCI-6110/6111, each STARTSCAN pulse
initiates one CONVERT* pulse.
Figure 4-9. Typical Posttriggered Acquisition
Pretriggered data acquisition allows you to view data that is acquired before
the trigger of interest in addition to data acquired after the trigger.
Figure 4-10 shows a typical pretriggered DAQ sequence. The description
for each signal shown in these figures appears later in this chapter.
the trigger of interest in addition to data acquired after the trigger.
Figure 4-10 shows a typical pretriggered DAQ sequence. The description
for each signal shown in these figures appears later in this chapter.
1
3
0
4
2
TRIG1
STARTSCAN
CONVERT*
Scan Counter