Home Support Documentation Bugs

NI-VRTS 19.0 and 20.0 Known Issues

Created Jun 22, 2023

Overview

This document contains the NI-VRTS known issues that were discovered before and since the release of NI-VRTS 19.0 and 20.0. 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.

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.

Bug Number

Legacy ID

Description

Details
1774263

For 1 GHz VRTS, Delay and Gain between VDG and VST Is Not Configurable

Individual systems may require adjusting these values depending on cables and system configuration.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

NI-VRTS: 19.0

Resolved Version:

NI-VRTS: 20.0

Added:

N/A
1774265

For 1 GHz VRTS, PXIe-5840 Calibration Coefficients Are Applied Incorrectly, Resulting in Incorrect Image Rejection and Equalization

This issue results in incorrect gain for measurements using the PXIe-5840 as well as simulation of objects >95m using the PXIe-5840. Updating to NI-VRTS 20.0.1 is essential.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

NI-VRTS: 20.0

Resolved Version:

NI-VRTS: 20.0.1

Added:

N/A
1774266

For 1 GHz VRTS, If LO Tuning Requires a Retry before Its PLL Locks, Any Preceding Warnings Will Be Cleared

In Configure.vi, NI-VRTS will make multiple attempts to tune the LOs to the requested frequency and ensure they are locked. If the first attempt does not succeed, any warnings passed on the error wire will be cleared.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

NI-VRTS: 20.0

Resolved Version:

NI-VRTS: 20.0.1

Added:

N/A
1774267

For 1 GHz VRTS, No Error is Reported When a PLL Fails to Lock

For VRTS to function properly, multiple phase-locked loops (PLLs) on the VDG and radio head must be locked to their reference input. Prior to NI-VRTS 20.0, if a PLL fails to lock, an error was not reported.

Workaround:

There is currently no known workaround for this issue.

Reported Version:

NI-VRTS: 19.0

Resolved Version:

NI-VRTS: 20.0

Added:

N/A
1774268

System Configuration API Does Not Update When a 4 GHz VRTS Radio Head Is Added or Removed

This affects MAX, as well as any System Configuration API session in LabVIEW or elsewhere.

Workaround:

To refresh, close and reopen MAX or LabVIEW.

Reported Version:

NI-VRTS: 19.0

Resolved Version:

N/A

Added:

N/A

Additional Resources

Explore Support Content and Product Documentation 

 

 

Ask the NI Community

 

 

Request Support from an Engineer

 

A valid service agreement may be required, and support options vary by country

 

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).