USRP Error code -1074118634, niUSRP Write Tx Data (CDB Cluster).vi<ERR>Cannot find a GPSDC

[CarlosMontoya]

Hello I want to generate a GPS signal using the USRP-2920, and then connect it to a GPS evaluation kit to verify if the evaluation board can see the satellites, so I run the example

https://decibel.ni.com/content/docs/DOC-22178

Everything looks OK, it starts with the legend Buffering Waveform, when it reaches 100 I clicked the Play button and the program stopped and send this error code:

-1074118634

and source:

niUSRP Write Tx Data (CDB Cluster).vi<ERR>Cannot find a GPSDC

Could someone help with this?

Thanks,

Carlos.

[Wayne_T · Accepted solution]

Carlos,

What versions of LabVIEW, GPS Toolkit  and NI USRP driver are you using?  I noticed the example you referenced states to make sure to use an external OCXO since the TCXO on the 292x series isn't precise enough.  What is going into RefIn?

[CarlosMontoya]

Well, for the OCXO I have a Trimble Thuderbolt but I still did not connect it to the RefIn port. Do you believe this could be the problem?

LabView is 2013, GPS toolkit is version 2 and USRP is Version 1.2.

Thanks for your help.

[CarlosMontoya]

I also looked for the error code 

0xBFFA4016 (-1074118634)

and I found this:

0xBFFA4016

NISWITCH_ERROR_CONFLICTING_TRIGGER_ROUTE_EXISTS

Requested trigger route cannot be made because a conflicting trigger route already exists.

Can you help?

Thanks,

Carlos

[Wayne_T]

Carlos,

It very well could be, so need to try it out before marking off the list of things to investigate.

Regarding your last post with the error about Switch Executive, let's keep in mind that the original error message stated

                         niUSRP Write Tx Data (CDB Cluster).vi<ERR>Cannot find a GPSDC

Is what you listed in the last post an additional error message?

[CarlosMontoya]

Oh yeah, it is the same error. I just added some information about the error.

I'll try with the OCXO, and let you know if that solves the issue.