Tx Rx synchronization with N210

[HishamA]

Hello,

I am trying to synchronize signal transmission/acquisition. My code works fine when I transmit and receive on the same N210. However, when I use two N210s, I can not receive my signal due the lack of tight synchronization. I use an Octoclock and I set the time and pps references to external. I also set the time to 00:00 right before the transmission/reception. I think the problem is that when I use USRP time set vi, the time is not set on the two boards at the same time. This vi does not take more than one session handler at the same time and I do not know how to initiate one single session for both tx and rx nodes.

Any help is greatly appreciated.

[yikhengyong]

Hi,

1. Would you mind share your VI here?
2. I try to find another example for your reference, but not TX RX. This example show 2 methods of synchronization.
   • Share same reference clock
   • Use sequence block to make sure slave device run before master device.
   • Synchronize Analog Input and Buffered Duty Cycle/Frequency Counter Measurements - NI Community.

Hope this example can inspire you.

If you face any difficulities during troubleshooting, we can discuss at here for next step.

[Agimma90]

Hi, I am doing a software defined radar project. I am using N210 for transmit and receive using the same device.  However, I manage to transmit only.

When I try the receiver part, I got this error

Error -1074118627 occurred at niUSRP Initiate.vi

Possible reason(s):
A runtime or configuration error occurred.
Code: 2786
Details: LookupError: Path not found in tree: /mboards/0/dboards/A/rx_frontends/0/sensors/lo_locked

May I know if there is any set up need to be done? I am using WBX daughterboard and the firmware is up to date.

Your help is much appreciated. Thank you.

I have tried to reach the ettus team regarding this, however didn't get any reply regarding the solution.

[dn2013]

Did you get help on this? Or do you get it resolved? I have the same problem.