[USRP-users] problems with recording of baseband complex GPS samples

2017-10-27 Thread Fabrizio Turin via USRP-users
Hi, I'm pretty much new to USRP. For a research project we are trying to record baseband in-phase and quadrature GPS samples with USRP device, here's our experimental set up: - Motherboard: USRP N210 - Daughterboard: WBX (40 MHz) - active GPS antenna Ublox ANN-MS powered through biasT (providi

Re: [USRP-users] B205mini: 0-value Samples When Switching Center Frequency

2017-10-27 Thread Marcus D. Leech via USRP-users
So, I wrote the following script for testing this morning: http://www.ccera.ca/files/tuning_test.grc It does random frequency hopping with 1MHz offsets, with a base frequency of 2.4GHz. It runs for 60 seconds and then just dumps complex I/Q data to a file. I then wrote a quick C program to

[USRP-users] time/phase synchronization of 2 X300

2017-10-27 Thread Luca Pascale via USRP-users
Hi, is it possible to phase synchronize 2 X300 as follows: - X300#1: equipped with GPSDO. Generate Ref and PPS signal for the X300#2 via PPS out and Ref out connectors. - X300#2: take PPS and Ref Signal from X300#1 (daisy chain) Target daughterboard is TwinRx. Phase offset will be corrected by

Re: [USRP-users] time/phase synchronization of 2 X300

2017-10-27 Thread Marcus D. Leech via USRP-users
On 10/27/2017 06:22 PM, Luca Pascale via USRP-users wrote: Hi, is it possible to phase synchronize 2 X300 as follows: - X300#1: equipped with GPSDO. Generate Ref and PPS signal for the X300#2 via PPS out and Ref out connectors. - X300#2: take PPS and Ref Signal from X300#1 (daisy chain) Targ