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USB-6349 Pinout

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    Last Modified: April 19, 2018
    Table 1. Default Counter/Timer Terminals
    Counter/Timer Signal Default PFI Terminal
    CTR 0 SRC PFI 8
    CTR 0 GATE PFI 9
    CTR 0 AUX PFI 10
    CTR 0 OUT PFI 12
    CTR 0 A PFI 8
    CTR 0 Z PFI 9
    CTR 0 B PFI 10
    CTR 1 SRC PFI 3
    CTR 1 GATE PFI 4
    CTR 1 AUX PFI 11
    CTR 1 OUT PFI 13
    CTR 1 A PFI 3
    CTR 1 Z PFI 4
    CTR 1 B PFI 11
    CTR 2 SRC PFI 0
    CTR 2 GATE PFI 1
    CTR 2 AUX PFI 2
    CTR 2 OUT PFI 14
    CTR 2 A PFI 0
    CTR 2 Z PFI 1
    CTR 2 B PFI 2
    CTR 3 SRC PFI 5
    CTR 3 GATE PFI 6
    CTR 3 AUX PFI 7
    CTR 3 OUT PFI 15
    CTR 3 A PFI 5
    CTR 3 Z PFI 6
    CTR 3 B PFI 7
    FREQ OUT PFI 14
    Table 2. Signal Descriptions
    Signal Reference Description
    AI GND —

    Analog Input Ground—These terminals are the bias current return point for DIFF measurements. All ground references—AI GND, AO GND, and D GND—are connected on the device. Though AI GND, AO GND, and D GND are connected on the device, they are connected by small traces to reduce crosstalk between subsystems. Each ground has a slight difference in potential.

    AI <0..31>

    		AI GND

    Analog Input Channels—AI 0+ and AI 0- are the positive and negative inputs of differential analog input channel 0.

    AO <0,1>

    AO GND

    Analog Output Channels—These terminals supply voltage output.

    AO GND

    		—

    Analog Output Ground—AO GND is the reference for AO. All ground references—AI GND, AO GND, and D GND—are connected on the device. Though AI GND, AO GND, and D GND are connected on the device, they are connected by small traces to reduce crosstalk between subsystems. Each ground has a slight difference in potential.

    D GND

    		—

    Digital Ground—D GND supplies the reference for port 0, port 1, port 2 digital channels, PFI, and +5 V. All ground references—AI GND, AO GND, and D GND—are connected on the device. Though AI GND, AO GND, and D GND are connected on the device, they are connected by small traces to reduce crosstalk between subsystems. Each ground has a slight difference in potential.

    P0.<0..7>

    		D GND

    Port 0 Digital I/O Channels—You can configure each signal individually as an input or output.

    APFI 0

    		AI GND

    Analog Programmable Function Interface Channel—The APFI signal can be used as an analog trigger input. APFI 0 is referenced to AI GND when it is used as an analog trigger input.

    +5 V

    		D GND

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

    PFI <0..7>/P1.<0..7>, PFI <8..15>/P2.<0..7>

    D GND

    Programmable Function Interface or Digital I/O Channels—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 can also route the counter/timer outputs to each PFI terminal. As a port 1 or port 2 digital I/O signal, you can individually configure each signal as an input or output.

    Reserved

    		—

    Reserved Pin—May be connected internally to device and... Should never be connected to any signal.

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