Lv 1.1, USRP 14.5.1, 2950R, DSP Overflow using the Single-Device Streaming Example

[EtuelDue]

In the attachments you will find the results of the Level Ranges.gvi. I also attached a screenshot of the received signal (I and Q). They are mismatched and I am not sure if this is intended.

Regards

[tcap]

Hello EtuelDue,

Thanks for posting the information. It appears to be extremely similar to mine, and I am able to run a new project with a 2950 without errors. This leads me to believe one of the following:

1) LabVIEW Communications project is corrupted.
Can you please post your project or create a new project for testing?

2) LabVIEW Communications is corrupted.
Can you please try to repair the installation of LabVIEW Communications?

3) The USRP RIO is having a hardware issue.
Can you please try to run the project on another USRP?

The results of these tests should let us know where the error is being generated.

Regards,

[EtuelDue]

Hello Thomas C.,

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 1) LabVIEW Communications project is corrupted.
Can you please post your project or create a new project for testing?

2) LabVIEW Communications is corrupted.
Can you please try to repair the installation of LabVIEW Communications?

3) The USRP RIO is having a hardware issue.
Can you please try to run the project on another USRP?

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1+2) I use the "PC USRP RIO 40 MHz BW Single-Device Streaming"-Example from the "New"-Tab. I also created new projects on two different PCs but the behavior of the device is not changing. From my perspective this excludes errors from the software.

I will try repairing LV on my second PC but I think this will not change anything.

3) I have another device (2953R,120 MHz BW) where the "PC USRP RIO 120 MHz BW Single-Device Streaming"-Example is working just fine.

Regards,

Etuel

[EtuelDue]

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I will try repairing LV on my second PC but I think this will not change anything.

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No change.

[tcap]

Hello EtuelDue,

Thanks for the information.

Have you tried updating or changing the Firmware Image on the USRP with the NI-USRP Configuration Utility?

I agree. It is definitely a hardware issue.

Regards,

[EtuelDue]

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@tcap wrote:

Have you tried updating or changing the Firmware Image on the USRP with the NI-USRP Configuration Utility?

I agree. It is definitely a hardware issue.

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Yes, I tried overwriting the firmware also on both PCs. A hardware issue seems to be the most likely reason.

Regards

[EtuelDue · Accepted solution]

So, after talking with the NI Support (and some additional testing) the error only occurs on NI 2940 and 2950 devices under specific circumstances. It is after all a software bug. Thanks everyone for contributing your ideas!