Hi everybody,
i'm working with the NI USRP 2954R using LabVIEW 2019 32bit with Windows 10. The device is directly connected to a workstation (through MXI-Express cable) which has the following characteristics:
- Intel Core i7 7820X;
- 32 GB DDR4 Ram;
- 500 GB NVMe M2 Samsung EVO Plus.
Actually, i'm using the device with 100 MSps sample rate, which give a 400 MBps data stream, and the size of the generated file is proportional to this data stream; when i try to acquire data at full bandwidth (200 MSps), i've noticed that the size of the generated file is not proportional to 800 MBps data stream, but it seems to be the same of 100 MSps: for example, if i acquire 5 second at 100 MSps, the file generated has 2 GB size (as expected), but if i acquire at 200 MSps, the size of the generated file is still 2 GB (instead of 4GB).
Could you explain me how to solve this problem and how to acquire at maximum performance of the device?
Furthermore, i've noticed similar behavior when i acquire with 2 channels: if i acquire 5 second at 100 MSps for 1 channel, i obtain a 2 GB file, but if i acquire 5 second at 100 MSps for both channels, i obtain 2 files of (more or less) 1.2 GB, despite the MXI-Express cable is capable of 800 MBps data stream.
Is this problem related to the previous one? How can i solve it?
Thanks a lot for your answers!
Alex
