Search found 3 matches

by pilot327
Wed Apr 25, 2018 8:30 am
Forum: RTL-SDR Discussion
Topic: USRP TX/RX. Lost bytes and "U" in flowgraph execution
Replies: 2
Views: 1765

Re: USRP TX/RX. Lost bytes and "U" in flowgraph execution

rtlsdrblog wrote:
Sat Apr 21, 2018 3:16 am
Those UU's mean buffer underruns, caused by your computer not being fast enough, or the USB transfer not being fast enough.

Thank you. How can I know characteristics of data processing usrp1 and computer?
by pilot327
Fri Apr 20, 2018 7:51 am
Forum: RTL-SDR Discussion
Topic: USRP TX/RX. Lost bytes and "U" in flowgraph execution
Replies: 2
Views: 1765

USRP TX/RX. Lost bytes and "U" in flowgraph execution

Hello everybody I have the flowgraph below PIC 1 (01_01_flowgraph) USRP transmits file (txt, picture and video) and receives this file at the same time Transmitted video is received without some bytes and i see letters "U". PIC 1 and PIC 2 at gnuradio terminal 1. What do this letters "U" mean? 1* I ...
by pilot327
Fri Apr 20, 2018 7:33 am
Forum: Other SDR Devices
Topic: USRP Transmit speed and receive quality depend of file size and Payload Length at Packet Encoder?
Replies: 0
Views: 2807

USRP Transmit speed and receive quality depend of file size and Payload Length at Packet Encoder?

Hi, i use this flowgraph PIC 1 (01_flowgraph) USRP transmits file (txt, picture and video) and receives this file at the same time 1. If i want to increase transmit speed i will increase PAYLOAD LENGTH in packet encoder. Is it the right way? 2.When I changed Payload Length in Packet Encoder from 1 t...