NI DAQ 6052E, Руководство пользователя

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Chapter 4 Connecting the Signals
© National Instruments Corporation 4-25 NI 6052E User Manual
Figure 4-14. Timing I/O Connections
Programmable Function Input Connections
You can externally control 13 internal timing signals from the PFI pins.
The source for each of these signals is software configurable from any PFI
when you want external control. This flexible routing scheme reduces the
need to change the physical wiring to the device I/O connector for
applications requiring alternative wiring.
You can individually enable each PFI pin to output a specific internal
timing signal. For example, if you need the CONVERT* signal as an output
to the I/O connector, the application software can turn on the output driver
for the PFI2/CONVERT* pin. Be careful not to externally drive a PFI
signal when it is configured as an output.
As an input, each PFI signal can be individually configured for edge or level
detection and polarity selection. You can use the polarity selection for any
timing signal, but the edge or level detection depends on the particular
timing signal being controlled. The detection requirements for each timing
signal are listed in the corresponding sections.
TRIG1
Source
DGND
PFI0/TRIG1
PFI2/CONVERT*
CONVERT*
Source
I/O Connector
NI 6052E