Solution
The I/O connector signal descriptions can be found in the help file for the specific series of card.
I/O Connector Signal Description Locations:
Common Signal Name Definitions: Please refer to following table.
SIGNAL
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Description
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AI_SENSE
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In NRSE mode, the reference for each Analog Input signal is AI SENSE.
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PFI
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Programmable Function Interface - Each of these terminals can be individually configured as a PFI terminal or a digital I/O terminal. As an input, each PFI terminal can be used to supply an external source for AI, AO, DI, and DO timing signals or counter/timer inputs. As a PFI output, you can route many different internal AI, AO, DI, or DO timing signals to each PFI terminal. You also can route the counter/timer outputs to each PFI terminal.
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AO_SAMP_CLK
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As an output, this pin emits the ao/SampleClock signal. A high-to-low transition of this signal indicates a new sample is being generated.
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FREQ_OUT
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Frequency Output Signal—This output is from the frequency generator.
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EXT_STROBE
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This pin is used to control some NI accessories. EXT STROBE is an output-only signal that generates either a single pulse or a sequence of eight pulses in the hardware-strobe mode. An external device can use this signal to latch signals or to trigger events.
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