Table Of Contents

PCI-6731 Pinout

Version:
    Last Modified: September 18, 2017

    Table 1. Signal Descriptions
    Signal Reference Description

    AO GND

    Analog Output Ground— The AO voltages and the external reference voltage are referenced to these terminals.

    AO <0..3>

    AO GND

    Analog Output Channels—These terminals supply voltage output.

    D GND

    Digital GroundD GND supplies the reference for the digital signals at the I/O connector and the +5 VDC supply.

    P0.<0..7>

    D GND

    Port 0 Digital I/O Signals—These terminals drive and receive digital signals. P0.6 and P0.7 can also control the up/down signal of Counters 0 and 1, respectively.

    +5 V

    D GND

    +5 V Power Source—These terminals supply a +5 V power source.

    AO EXT REF

    D GND

    External Reference—This pin is the external reference input for the AO circuitry.

    EXT STROBE

    D GND

    External Strobe Signal—This pin is used to control some NI accessories.

    PFI <0..2>, PFI 7

    D GND

    Programmable Function Interface—As an input, this is a general-purpose input terminal.

    PFI 3/CTR 1 SOURCE

    D GND

    Programmable Function Interface or Counter 1 Source Signal—As an input, this is a general-purpose input terminal. This is the default input for the Ctr1Source signal. As an output, this terminal emits the selected Ctr1Source signal. This signal reflects the actual source signal connected to Counter 1.

    PFI 4/CTR 1 GATE

    D GND

    Programmable Function Interface or Counter 1 Gate Signal—As an input, this is a general-purpose input terminal. This is the default input for the Ctr1Gate signal. As an output, this terminal emits the selected Ctr1Gate signal. This signal reflects the actual gate signal connected to Counter 1.

    CTR 1 OUT

    D GND

    Counter 1 Output Signal—This terminal emits the Ctr1InternalOutput signal.

    PFI 5/AO SAMP CLK

    D GND

    Programmable Function Interface or AO Sample Clock Signal—As an input, this is a general-purpose input terminal. As an output, this terminal emits the AO Sample Clock signal. A high-to-low transition of this signal indicates a new sample is being generated.

    PFI 6/AO START TRIG

    D GND

    Programmable Function Interface or AO Start Trigger Signal—As an input, this is a general-purpose input terminal. This is the default input for the AO Start Trigger signal. As an output, this terminal emits the AO Start Trigger signal. A low-to-high transition of this signal indicates the start of a generation.

    PFI 8/CTR 0 SOURCE

    D GND

    Programmable Function Interface or Counter 0 Source Signal As an input, this is a general-purpose input terminal and can also be used to route signals directly to the RTSI bus. This is the default input for the Ctr0Source signal. As an output, this terminal emits the Ctr0Source signal. This signal reflects the actual source signal connected to Counter 0.

    PFI 9/CTR 0 GATE

    D GND

    Programmable Function Interface or Counter 0 Gate Signal—As an input, this is a general-purpose input terminal. This is the default input for the Ctr0Gate signal. As an output, this terminal emits the Ctr0Gate signal. This signal reflects the actual gate signal connected to Counter 0.

    CTR 0 OUT

    D GND

    Counter 0 Output Signal—As an input, this terminal can be used to route signals directly to the RTSI bus. As an output, this terminal emits the Ctr0InternalOutput signal.

    FREQ OUT

    D GND

    Frequency Output Signal—This output is from the frequency generator.

    NC

    No connect—Do not connect signals to this terminal.


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