[USRP-users] Re: Center frequency drift on USRP B-series even with Octoclock

2021-06-03 Thread Viktor Erdelyi
s://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> On Thu, Jun 3, 2021 at 7:37 AM, Viktor Erdelyi wrote: Dear all, First post here. I have done so

[USRP-users] Re: Center frequency drift on USRP B-series even with Octoclock

2021-06-03 Thread Viktor Erdelyi
You're right Marcus, 0.9GHz seems to be better indeed (see image). Also thanks for the input on the B205 PLL. May I ask in what way phase noise can affect the signal's frequency? According to an NI webpage [1], it "deals with very short time scales and produces effects that look more like unwa

[USRP-users] Re: tx_samples_from_file warnings for ettus x310

2021-06-08 Thread Viktor Erdelyi
In my experience, the "[WARNING] [0/Radio#0] Attempting to set tick rate to 0. Skipping." message appears (pretty much always?) even without optical fiber (just plain 1Gbps Ethernet or PCI-express), and even at 1Msps, when using the X310, but the application still works. Viktor On 6/8/21 3:59

[USRP-users] Re: Center frequency drift on USRP B-series even with Octoclock

2021-06-08 Thread Viktor Erdelyi
Padalino wrote: On Fri, Jun 4, 2021 at 2:21 AM Viktor Erdelyi mailto:vik...@ist.osaka-u.ac.jp>> wrote: You're right Marcus, 0.9GHz seems to be better indeed (see image). Also thanks for the input on the B205 PLL. May I ask in what way phase noise can affect the signal'

[USRP-users] RIO FIFO error on X310 over PCI-express

2021-06-14 Thread Viktor Erdelyi
Dear all, I'm using 2 USRP X310s over PCI-express (connected to the same computer, running UHD 4.0, compiled from source on CentOS Stream, kernel 4.18). If I specify mboard 0 for one multi_usrp and mboards 0 and 1 for another multi_usrp, I get the following error: "RuntimeError: x300_impl: C

[USRP-users] Re: UHD 4.1.0.0 released!

2021-07-02 Thread Viktor Erdelyi
Dear all, Has the LO sharing API changed in UHD 4.1? I have used the following code in UHD 4.0 to share LOs on a USRP X310 with 2 TwinRX installed, and it worked (all 4 channels were in sync, i.e. more or less consistent phase offset). Now if I switch to UHD 4.1, channels 0 and 1 keep driftin

[USRP-users] Assertion fail when destroying tx streamer (UHD 4)

2021-07-07 Thread Viktor Erdelyi
Hi all, I get an undecipherable assertion failure when running the following simple code using a 1Gbps Ethernet link. The error happens when t1 goes out of scope, every time I run the application. What am I missing? int main(int argc, char *argv[]) {     uhd::device_addr_t devAddresses("addr=

[USRP-users] Re: Assertion fail when destroying tx streamer (UHD 4)

2021-07-09 Thread Viktor Erdelyi
11:49 PM, Marcus D. Leech wrote: On 07/07/2021 09:09 AM, Viktor Erdelyi wrote: Hi all, I get an undecipherable assertion failure when running the following simple code using a 1Gbps Ethernet link. The error happens when t1 goes out of scope, every time I run the application. What am I missing?