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Ultra-Wideband Test Toolkit 25.0 Known Issues

Created Oct 29, 2025

Overview

This document contains the Ultra-Wideband Test Toolkit known issues that were discovered before and since the release of Ultra-Wideband Test Toolkit 25.0. Known issues are performance issues or technical bugs that NI has acknowledged exist within this version of the product.

 

Not every issue known to NI appears on this list; it is intended to show the most severe and common issues that you may encounter and provide workarounds when possible. Other technical issues that you may encounter could occur through normal product use or system compatibility issues. You may find more information on these issues in NI’s Product Documentation, Knowledgebase, or Community; see Additional Resources.

Bug Number

Legacy ID

Description

Details
3168892

Measurement Fails When Generation VI is Started Before Analysis VI in IEEE 802.15.4ab ARDEV Mode

In IEEE 802.15.4ab ARDEV mode, measurements execute correctly only when the Analysis VI is triggered before the Generation VI.
If the Generation VI is started first, the measurement produces incorrect results due to trigger check failures. This occurs because the analysis path must be initialized prior to signal generation to ensure proper synchronization.

Workaround:

Start the Analysis VI before the Generation VI.

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
2978355

Data Peak and Average Power Difference of More Than 3 dB Observed Between Tx and Rx in Loopback Mode

In loopback mode, a difference of more than 3 dB is observed between Tx (Generation) and Rx (Analysis) for both Data Peak Power and Data Average Power.

Workaround:

N/A

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3168903

No error handling for STS configurations SP1, SP2 and SP3 in LLDDEV mode

In IEEE 802.15.4ab LLDDEV mode, STS configurations SP1, SP2 and SP3 are not supported. Currently, no error is generated if these configurations are used.

Workaround:

Use only SP0 as STS configuration suggested by IEEE standard in LLDDEV mode.

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3108677

STS NRMSE Result is zero in SP2 configuration even when NRMSE is enabled for IEEE 802.15.4z standard

When NRMSE is enabled, the STS NRMSE value is zero in SP2 configuration. This issue occurs under the IEEE 802.15.4z standard.

Configuration Details:
  1. HPRF Set: #12
  2. Channel: 5
  3. Mean PRF: 124.8
  4. PHR Rate: 7.8
  5. Data Rate: 6.81
  6. Code Index: 29
  7. PSR: 64
  8. SFD: 8z
  9. STS Packet Configuration: SP2
  10. Number of Segments: 1
  11. Segment Length: 128

Workaround:

N/A

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3150306

Error -2147024894: Teststand sequence shipped doesnt work with 2024 and above version.

The TestStand sequence shipped fails in Teststand 2024 and later versions, producing Error -2147024894.

Workaround:

Use Teststand 2023 Version

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3377783

Exception on CloseRFmxSession When License is Invalid in MaxEyeUWBMeasureSEM .Net example

When the license is invalid and we run the 'MaxEyeUWBMeasureSEM' DotNET example, there's an exception on closing RFmx session after the error message.

Workaround:

N/A

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3183253

Limited UWB Channel Support for BW > 1 GHz on PXIe-5842

On PXIe-5842 hardware, in LabVIEW and .NET examples, for UWB channels with bandwidth >1 GHz, only channel 7 is supported. Channels 4, 11, and 15 are not supported.
In the UWB SFP application, none of the channels with BW >1 GHz are supported.

Workaround:

Use channel 7 for bandwidth >1GHz, or use other channels for bandwidth <1GHz.

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A
3437332

Incorrect Description Displayed for Certain Controls in SFP Help

In SFP, the control descriptions shown in the Help tooltip are incorrect or inappropriate for some newly added controls in the Configurations tab. When the Help option is enabled and the user hovers over these controls, the displayed description does not match the intended functionality.

Workaround:

Refer to the Getting Started Guide for the correct control descriptions.

Reported Version:

Ultra-Wideband Test Toolkit: 25.0

Resolved Version:

N/A

Added:

N/A

Final Time Issue Listed

Issues found in this section will not be listed in future known issues documents for this product.

There are currently no issues to list.

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Glossary of Terms

 

  • Bug ID - When an issue is reported to NI, you may be given this ID or find it on ni.com.  You may also find IDs posted by NI on the discussion forums or in KnowledgeBase articles.
  • Legacy ID – An older issue ID that refers to the same issue.  You may instead find this issue ID in older known issues documents.
  • Description - A few sentences which describe the problem. The brief description given does not necessarily describe the problem in full detail.
  • Workaround - Possible ways to work around the problem.
  • Reported Version - The earliest version in which the issue was reported.
  • Resolved Version - Version in which the issue was resolved or was no longer applicable. "N/A" indicates that the issue has not been resolved.
  • Date Added - The date the issue was added to the document (not the reported date).