NI RFSA and RFSG Timeout Occurred While Waiting for a Response From the Instrument FIFO

Updated Apr 28, 2023

Reported In


  • PXIe-5840
  • PXIe-5646
  • PXIe-5644


  • LabVIEW



Operating System

  • Windows

Issue Details

Using instrument NI PXIe-5840 through RFSA/RFSG soft front panels or LabVIEW, the timeouts and the instrument cannot be used.

When debugging with NI I/O trace the specific error is following:


> 281. niRFSA_InitWithOptions ("PXI1Slot7", VI_TRUE, VI_FALSE, "DriverSetup=SFPSessionAccess:0", 0x0000012270C499FC)
> Process ID: 0x00004668 Thread ID: 0x0000016C
> Start Time: 15:49:37,7056 Call Duration 00:00:00.3068
> Status: 0xBFFA9407

282. niRFSA_GetError (0x00000000, -1074097145 (0xBFFA9407), 1024 (0x400), "The requested operation did not complete in time.")
Process ID: 0x00004668 Thread ID: 0x0000016C
Start Time: 15:49:38,0124 Call Duration 00:00:00.0140
Status: 0 (VI_SUCCESS)

The NI RFSA/RFSG Soft Front Panels outputs are provided below:

renditionDownload (1).png

renditionDownload (2).png



After receiving a timeout error, first of all, there is a need to check NI VST Access and Active LEDs and do an instrument Self-Test in MAX (Open MAX->Select Device->Click Self Test From Toolbar).

renditionDownload (3).png

If the Access LED is green, i.e. the device is controllable through the software and the Self-Test output is successful like in the screenshot above the second step is to check the fan speed.

Following steps are required:

  1. Unplug the VST module
  2. Put the fun speed of NI chassis from Auto to High
  3. Let the module and chassis cool down
  4. Test again with High fan speed