[USRP-users] Re: Getting "S" error when using dpdk and replay block

2024-01-18 Thread Rob Kossler via USRP-users
Hi Joe, The "S" errors imply that the receiver of a packet has detected that incoming packets are out-of-sequence. Each successive packet is sequentially numbered so if everything goes well, the receive side should receive the packets in sequential order. If you are sending from your host to the

[USRP-users] Re: Bug/problem aligning PPS to samples

2024-01-18 Thread Marcus D. Leech
On 18/01/2024 14:21, Steve Hamn wrote: That might be a bigger project. Can I just hook the Trig Out to a Oscilloscope to meausre the Pulse Width 1 PPS? Or is that a different signal? Thanks, Steve A qualified "maybe".  The GPS PPS signals I think go into the FPGA for processing, so the TRIG

[USRP-users] Re: Bug/problem aligning PPS to samples

2024-01-18 Thread Steve Hamn
That might be a bigger project. Can I just hook the Trig Out to a Oscilloscope to meausre the Pulse Width 1 PPS? Or is that a different signal? Thanks, Steve On Thu, Jan 18, 2024, 08:06 Marcus D. Leech wrote: > On 18/01/2024 02:24, Steve Hamn wrote: > > Hi Marcus, > > Do you know what the Pul

[USRP-users] Getting "S" error when using dpdk and replay block

2024-01-18 Thread jmaloyan
Hello, I currently have a custom CG_400 image where I utilize the replay block. When I run my application without dpdk on, data is successfully written to the DRAM and played back. However, if I use the same image and same application, but I turn on DPDK, the application stalls while data is be

[USRP-users] Re: Synchronize UBX-40 v1 Vs WBX-v3 + simple GDB

2024-01-18 Thread Marcus D. Leech
On 18/01/2024 03:25, je.amg...@gmail.com wrote: Hi, The R&S generator and the USRP device are synchronized through a 10 MHz reference signal. The transmitter (Tx) emits a pure sine wave at the carrier frequency F0 + 10KHz. The receiver (Rx) in GNURadio operates at F0 and is externally synchro

[USRP-users] Re: Bug/problem aligning PPS to samples

2024-01-18 Thread Marcus D. Leech
On 18/01/2024 02:24, Steve Hamn wrote: Hi Marcus, Do you know what the Pulse Width of the PPS in the N3XX GPSDO is? (I.e. how much time difference would this result in?). I've been seeing ~100ms of timing error with an N320 using GPS vs an N320 using WR, that I've been trying to debug. I'm u