Hi Mike, Let's keep the discussion on the mailing list. I attach the scripts as they are quite small. There is however a data folder with two 4MB files containing noise in complex short format. The version of the archive with those files is here: https://app.box.com/s/xfpwro8wybog4f1yo1l6yh665tg4sx0r
First you run: ./record.sh then: ./show_figures.m (you need to have octave installed for the second script). Best Regards, Piotr Krysik W dniu 08.04.2019 o 18:30, Michael R. Freedman pisze: > That would be wonderful if I could get your scripts to run. > > > Thanks a bunch for the info! > > > Mike > > > On 04/08/2019 09:56 AM, Piotr Krysik via USRP-users wrote: >> Hi all, >> >> I looked at this thread and it reminded me of something. >> >> Once we purchased few X310 with UBX160 daughter-boards. >> >> One of them had some frequency offset on Tx channel, that decreased over >> time it was running, but very slowly. >> >> The daughter-board was then replaced by National Intruments (after some >> adventures ;) ). The replacement one had exactly the same issue so it >> was also replaced. The next one was ok. So it seemed it was some >> manufacturing issue with UBX. >> >> I don't know if it's the same issue (i.e. due to lack of data), but I >> attach part of the report that was sent to National Instruments: >> -phase offset of the received signal in relation to digital waveform for >> a single X310 with UBX160 for all TX and RX combinations: >> https://imgur.com/a/ODBtT4o >> -schematic: >> https://imgur.com/a/si9fJZp >> >> I got also scripts that were used for recording and plotting that >> figure. If you are interested I can post it somewhere. >> >> What seems different from situation here is that for us it seemed the >> effect wasn't depending on frequency (but I didn't do any extensive >> tests and might not remember). >> >> -- >> Best Regards, >> Piotr Krysik >> >> W dniu 07.04.2019 o 03:00, Freedman, Michael - 1008 - MITLL via >> USRP-users pisze: >>> I have switched and am currently running the release 3.14.0.0 >>> >>> Sent from my iPhone >>> >>> On Apr 6, 2019, at 8:58 AM, Marcus D. Leech <patchvonbr...@gmail.com >>> <mailto:patchvonbr...@gmail.com>> wrote: >>> >>> On 04/05/2019 11:43 AM, Michael R. Freedman wrote: >>>> Hello, >>>> >>>> >>>> If I remove the DSP from the equation by setting the DSP tuning >>>> policy to manual and assigning it to zero, I am coherent from tx to >>>> rx on all frequencies. I'm now beginning to think that the DSP is >>>> doing it's tuning differently for tx and rx. Or there is an >>>> accumulated error in opposite directions for both. Thoughts? >>>> >>>> >>>> Leaving the DSP to zero is not a good solution however as there is >>>> too much LO leakage. >>>> >>>> >>> Could you try UHD 3.14.0.0? >>> >>> I think that you're using the -rc3 version at the moment. >>> >>> >>>> Mike >>>> >>>> >>>> On 03/27/2019 04:58 PM, Marcus D. Leech wrote: >>>>> On 03/27/2019 04:48 PM, Michael R. Freedman wrote: >>>>>> This is on a single UBX card within a single USRP. >>>>>> >>>>>> >>>>>> ./uhd_usrp_probe --args=addr=192.168.40.100 >>>>>> [INFO] [UHD] linux; GNU C++ version 7.3.0; Boost_106501; >>>>>> UHD_3.14.0.0-0-unknown >>>>>> [INFO] [X300] X300 initialization sequence... >>>>>> [INFO] [X300] Maximum frame size: 8000 bytes. >>>>>> [INFO] [X300] Radio 1x clock: 200 MHz >>>>>> [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: >>>>>> 0xF1F0D00000000000) >>>>>> [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1320 MB/s) >>>>>> [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1294 MB/s) >>>>>> [INFO] [0/Radio_0] Initializing block control (NOC ID: >>>>>> 0x12AD100000000001) >>>>>> [INFO] [0/Radio_1] Initializing block control (NOC ID: >>>>>> 0x12AD100000000001) >>>>>> [INFO] [0/DDC_0] Initializing block control (NOC ID: >>>>>> 0xDDC0000000000000) >>>>>> [INFO] [0/DDC_1] Initializing block control (NOC ID: >>>>>> 0xDDC0000000000000) >>>>>> [INFO] [0/DUC_0] Initializing block control (NOC ID: >>>>>> 0xD0C0000000000000) >>>>>> [INFO] [0/DUC_1] Initializing block control (NOC ID: >>>>>> 0xD0C0000000000000) >>>>>> _____________________________________________________ >>>>>> / >>>>>> | Device: X-Series Device >>>>>> | _____________________________________________________ >>>>>> | / >>>>>> | | Mboard: X310 >>>>>> | | revision: 6 >>>>>> | | product: 30410 >>>>>> | | mac-addr0: 00:80:2f:0a:ff:98 >>>>>> | | mac-addr1: 00:80:2f:0a:ff:99 >>>>>> | | gateway: 192.168.10.1 >>>>>> | | ip-addr0: 192.168.10.100 >>>>>> | | subnet0: 255.255.255.0 >>>>>> | | ip-addr1: 192.168.20.100 >>>>>> | | subnet1: 255.255.255.0 >>>>>> | | ip-addr2: 192.168.30.100 >>>>>> | | subnet2: 255.255.255.0 >>>>>> | | ip-addr3: 192.168.40.100 >>>>>> | | subnet3: 255.255.255.0 >>>>>> | | serial: F5BE45 >>>>>> | | FW Version: 6.0 >>>>>> | | FPGA Version: 35.1 >>>>>> | | FPGA git hash: 4c165a5 >>>>>> | | RFNoC capable: Yes >>>>>> | | >>>>>> | | Time sources: internal, external, gpsdo >>>>>> | | Clock sources: internal, external, gpsdo >>>>>> | | Sensors: ref_locked >>>>>> | | _____________________________________________________ >>>>>> | | / >>>>>> | | | RX Dboard: A >>>>>> | | | ID: UBX-40 v2 (0x007c) >>>>>> | | | Serial: 313C181 >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | RX Frontend: 0 >>>>>> | | | | Name: UBX RX >>>>>> | | | | Antennas: TX/RX, RX2, CAL >>>>>> | | | | Sensors: lo_locked >>>>>> | | | | Freq range: 10.000 to 6000.000 MHz >>>>>> | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB >>>>>> | | | | Bandwidth range: 40000000.0 to 40000000.0 step >>>>>> 0.0 Hz >>>>>> | | | | Connection Type: IQ >>>>>> | | | | Uses LO offset: No >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | RX Codec: A >>>>>> | | | | Name: ads62p48 >>>>>> | | | | Gain range digital: 0.0 to 6.0 step 0.5 dB >>>>>> | | _____________________________________________________ >>>>>> | | / >>>>>> | | | RX Dboard: B >>>>>> | | | ID: UBX-40 v2 (0x007c) >>>>>> | | | Serial: 313C191 >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | RX Frontend: 0 >>>>>> | | | | Name: UBX RX >>>>>> | | | | Antennas: TX/RX, RX2, CAL >>>>>> | | | | Sensors: lo_locked >>>>>> | | | | Freq range: 10.000 to 6000.000 MHz >>>>>> | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB >>>>>> | | | | Bandwidth range: 40000000.0 to 40000000.0 step >>>>>> 0.0 Hz >>>>>> | | | | Connection Type: IQ >>>>>> | | | | Uses LO offset: No >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | RX Codec: B >>>>>> | | | | Name: ads62p48 >>>>>> | | | | Gain range digital: 0.0 to 6.0 step 0.5 dB >>>>>> | | _____________________________________________________ >>>>>> | | / >>>>>> | | | TX Dboard: A >>>>>> | | | ID: UBX-40 v2 (0x007b) >>>>>> | | | Serial: 313C181 >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | TX Frontend: 0 >>>>>> | | | | Name: UBX TX >>>>>> | | | | Antennas: TX/RX, CAL >>>>>> | | | | Sensors: lo_locked >>>>>> | | | | Freq range: 10.000 to 6000.000 MHz >>>>>> | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB >>>>>> | | | | Bandwidth range: 40000000.0 to 40000000.0 step >>>>>> 0.0 Hz >>>>>> | | | | Connection Type: QI >>>>>> | | | | Uses LO offset: No >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | TX Codec: A >>>>>> | | | | Name: ad9146 >>>>>> | | | | Gain Elements: None >>>>>> | | _____________________________________________________ >>>>>> | | / >>>>>> | | | TX Dboard: B >>>>>> | | | ID: UBX-40 v2 (0x007b) >>>>>> | | | Serial: 313C191 >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | TX Frontend: 0 >>>>>> | | | | Name: UBX TX >>>>>> | | | | Antennas: TX/RX, CAL >>>>>> | | | | Sensors: lo_locked >>>>>> | | | | Freq range: 10.000 to 6000.000 MHz >>>>>> | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB >>>>>> | | | | Bandwidth range: 40000000.0 to 40000000.0 step >>>>>> 0.0 Hz >>>>>> | | | | Connection Type: QI >>>>>> | | | | Uses LO offset: No >>>>>> | | | _____________________________________________________ >>>>>> | | | / >>>>>> | | | | TX Codec: B >>>>>> | | | | Name: ad9146 >>>>>> | | | | Gain Elements: None >>>>>> | | _____________________________________________________ >>>>>> | | / >>>>>> | | | RFNoC blocks on this device: >>>>>> | | | >>>>>> | | | * DmaFIFO_0 >>>>>> | | | * Radio_0 >>>>>> | | | * Radio_1 >>>>>> | | | * DDC_0 >>>>>> | | | * DDC_1 >>>>>> | | | * DUC_0 >>>>>> | | | * DUC_1 >>>>>> >>>>>> >>>>>> >>>>>> Mike >>>>>> >>>>> OK, so could you use the tx_waveforms example in multi-channel mode >>>>> and confirm correct output on a spectrum analyser, >>>>> or another X310 doing receive? >>>>> >>>>> >>>>>> >>>>>> On 03/27/2019 03:42 PM, Marcus D. Leech via USRP-users wrote: >>>>>>> On 03/27/2019 03:39 PM, Michael R. Freedman via USRP-users wrote: >>>>>>>> Marcus, >>>>>>>> >>>>>>>> >>>>>>>> I tried a 10MHz LOOffset with no change. I also tried it at >>>>>>>> 1155.0MHz and 1160.0MHz. At 1155 the phase rolls... at 1160 it >>>>>>>> does not. >>>>>>>> >>>>>>>> >>>>>>>> Mike >>>>>>>> >>>>>>> Could you give us a dump of uhd_usrp_probe for an X310 that >>>>>>> displays this issue? What version of UHD? Also, to be clear, >>>>>>> this is within >>>>>>> a *single* X310, correct? >>>>>>> >>>>>>> >>>>>>>> On 03/27/2019 11:10 AM, Marcus D. Leech via USRP-users wrote: >>>>>>>>> On 03/27/2019 10:41 AM, Michael R. Freedman via USRP-users wrote: >>>>>>>>>> Any thoughts on this? >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Mike >>>>>>>>>> >>>>>>>>> Given that in this case, the incoming carrier will be fighting >>>>>>>>> DC-offset removal rather hard, I wonder if this is a weird >>>>>>>>> artifact of DC-offset >>>>>>>>> removal? >>>>>>>>> >>>>>>>>> If you use offset tuning on the RX, do you still see a >>>>>>>>> significant phase roll? >>>>>>>>> >>>>>>>>> >>>>>>>>>> On 03/25/2019 01:04 PM, Michael R. Freedman via USRP-users >>>>>>>>>> wrote: >>>>>>>>>>> Marcus, >>>>>>>>>>> >>>>>>>>>>> 190Hz is what we calculated. I have attached a text file >>>>>>>>>>> with the data we used. This is a single UBX40 tuned to 155MHz >>>>>>>>>>> sampling at 2MHz. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Mike >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On 03/25/2019 12:34 PM, Nick Foster wrote: >>>>>>>>>>>> Well, according to your description, you could transmit a >>>>>>>>>>>> carrier from TX to RX (through an attenuator) with both sides >>>>>>>>>>>> set to the same frequency. Your received signal should look >>>>>>>>>>>> like a sine wave at the frequency of the offset. >>>>>>>>>>>> >>>>>>>>>>>> On Mon, Mar 25, 2019 at 9:16 AM Michael R. Freedman via >>>>>>>>>>>> USRP-users <usrp-users@lists.ettus.com >>>>>>>>>>>> <mailto:usrp-users@lists.ettus.com>> wrote: >>>>>>>>>>>> >>>>>>>>>>>> Hello, >>>>>>>>>>>> >>>>>>>>>>>> Do you have any suggestions as to how to measure the >>>>>>>>>>>> frequency delta between the transmit channel and the >>>>>>>>>>>> receive channel? >>>>>>>>>>>> >>>>>>>>>>>> As I sat down to do this, I realized I have no real way >>>>>>>>>>>> to do that. >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> Mike >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> On 03/24/2019 03:23 PM, Marcus D. Leech via USRP-users >>>>>>>>>>>> wrote: >>>>>>>>>>>>> On 03/24/2019 02:39 PM, Freedman, Michael - 1008 - MITLL >>>>>>>>>>>>> via USRP-users wrote: >>>>>>>>>>>>>> It is not just a phase offset. It is a frequency >>>>>>>>>>>>>> offset. The phase drifts between the two. I can tolerate >>>>>>>>>>>>>> a phase offset at startup. A freq offset however is >>>>>>>>>>>>>> causing problems. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Mike >>>>>>>>>>>>>> >>>>>>>>>>>>>> Sent from my iPhone >>>>>>>>>>>>>> >>>>>>>>>>>>>> On Mar 24, 2019, at 4:28 AM, Marcus Müller >>>>>>>>>>>>>> <marcus.muel...@ettus.com> >>>>>>>>>>>>>> <mailto:marcus.muel...@ettus.com> wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>> Can you elaborate on what "not coherent" means to >>>>>>>>>>>>>> you – the relative >>>>>>>>>>>>>> phase should be constant after each tune, but if you >>>>>>>>>>>>>> don't tune >>>>>>>>>>>>>> simultaneously, i.e. with timed commands, random at >>>>>>>>>>>>>> each tune. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Best regards, >>>>>>>>>>>>>> Marcus >>>>>>>>>>>>> Also, what version of UHD? What hardware rev of UBX >>>>>>>>>>>>> cards? >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>>> On Sat, 2019-03-23 at 17:06 -0400, Michael R. >>>>>>>>>>>>>> Freedman via USRP-users >>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>> Hello, >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I have an issue where I tune both the TX and RX >>>>>>>>>>>>>>> side of a UBX40 card >>>>>>>>>>>>>>> in >>>>>>>>>>>>>>> an X310 to the same frequency and find that the >>>>>>>>>>>>>>> transmitted signal >>>>>>>>>>>>>>> and >>>>>>>>>>>>>>> what is received are not coherent. I am using an >>>>>>>>>>>>>>> external 10MHz >>>>>>>>>>>>>>> reference and have tried the documented suggestions. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> at 150MHz it is coherent. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> at 155MHz it is NOT coherent. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I have tried setting the dboard_clock_rate to >>>>>>>>>>>>>>> 20MHz. This made the >>>>>>>>>>>>>>> problem appear at 150MHz as well. I've tried >>>>>>>>>>>>>>> integer_n tuning. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I have verified that the ref_lock and lo_lock are >>>>>>>>>>>>>>> both true. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Any suggestions? >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Mike >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>>> USRP-users mailing list >>>>>>>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>>>>>>> <mailto:USRP-users@lists.ettus.com> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>> USRP-users mailing list >>>>>>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>>>>>> <mailto:USRP-users@lists.ettus.com> >>>>>>>>>>>>>> >>>>>>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>> USRP-users mailing list >>>>>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>>>>> <mailto:USRP-users@lists.ettus.com> >>>>>>>>>>>>> >>>>>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>>>>>>>>>>> >>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>> USRP-users mailing list >>>>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>>>> <mailto:USRP-users@lists.ettus.com> >>>>>>>>>>>> >>>>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> _______________________________________________ >>>>>>>>>>> USRP-users mailing list >>>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>>
UBX_problem.tar.gz
Description: application/gzip
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