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PXI-5421 Pinout and LEDs

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    Last Modified: April 10, 2017

    Refer to the following figure and tables for information about the PXI-5421 front panel connectors and LEDs:

    Table 1. PXI-5421 Signal Descriptions
    Signal Connector Type Access Description
    CH 0 SMB Output Generates waveforms from an analog output terminal.
    CLK IN Input Accepts an external PLL Reference Clock and can phase-lock the internal Sample Timebase Clock to the external Reference Clock. The signal on this connector can also be used as a Sample Clock source.
    PFI 0 Input/Output Accepts a trigger from an external source and can start or step through waveform generation or route signals from several clock, event, and trigger sources.
    PFI 1
    DIGITAL DATA & CONTROL (DDC) 68-pin male VHDCI Routes the 16-bit digital pattern outputs, digital pattern clock output, trigger outputs, trigger inputs, and a clock input.
    spd-note-note
    Note  

    The DDC connector is not available on the PXI-5421 8 MB memory option.

    Table 2. PXI-5421 ACCESS LED Indicators
    The ACCESS LED indicates basic hardware status.
    LED Color Indication
    No color (off) The PXI-5421 is not yet functional, or the PXI-5421 has detected a problem with a power rail.
    Amber The PXI-5421 is being accessed.
    Green The PXI-5421 is ready to be programmed by NI-FGEN.
    Table 3. PXI-5421 ACTIVE LED Indicators
    The ACTIVE LED indicates the PXI-5421 hardware state.
    LED Color Indication
    No color (off) The PXI-5421 is not generating.
    Amber The PXI-5421 is armed and waiting for a trigger.
    Green The PXI-5421 has received a trigger and is generating a waveform.
    Red The PXI-5421 has detected an error. NI-FGEN must access the PXI-5421 to determine the cause of the error. The LED remains red until the error condition is removed. Example errors include the following:
    • Phase-locked loop (PLL) unlocked: The PXI-5421 has detected an unlocked condition on a previously locked PLL. A PLL that is unlocked while in reset does not show an error.
    • The PXI-5421 has powered down because the internal temperature exceeded the maximum limit. The over-temperature condition must be corrected and the hardware reset. To reset the hardware, call niFgen Reset Device or niFgen_ResetDevice, or perform a device reset in MAX.[1]
    • 1 For more information about keeping the PXI-5421 within internal temperature limits, refer to the Maintain Forced-Air Cooling Note to Users included with your PXI-5421.

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