PXI-5421 Pinout and LEDs

Version:

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.

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.

Table Of Contents