Slow Tx and Rx NI USRP-2944R & NI USRP-2950R

[alawsh21]

We've worked on different applications using NI USRP-2944R & NI USRP-2950R, long time ago. At that time, things were working fine and on the fly. 

Currently, we're trying to run a transmitter and a receiver in same or different USRPs. This took around 20 minutes to start both even if we reduce the IQ rate. We've also tried the ready-made example by NI, but we got the same issue.  

The USRPs are connected to PXI and GPS-disciplined oscillator (GPSDO), see screenshot below. 

We tried to upgrade the RAM, but no clear improvement. 

We appreciate your help.