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Alexander Chemeris alexander.chemeris at gmail.comSorry, missed that! I was reading before I really wake up. Still we need to document this at the issue tracker. On Wed, Jul 25, 2012 at 9:01 AM, Andrey Sviyazov <andrey.sviyazov at fairwaves.ru> wrote: > Alexander, I already explained it in preview mail. > > Best regards, > Andrey Sviyazov. > (Sent from my mobile client) > > 25.07.2012 8:47 пользователь "Alexander Chemeris" > <alexander.chemeris at gmail.com> написал: > >> Hi Andrey, >> >> Could you also describe to Thomas and Sylvain what to do with C45 and >> L6? I guess that's a required step before they do any other >> measurements. >> >> And please, add this issue to the issue tracker. >> >> On Wed, Jul 25, 2012 at 1:56 AM, Andrey Sviyazov >> <andrey.sviyazov at fairwaves.ru> wrote: >> > Hi Thomas. >> > >> > Could you please make test again for LO integral phase noise and >> > modulation >> > accuracy with PLL loop filter 100kHz and ICP=0.4mA (or above), as Srdjan >> > suggested us. >> > I've assembled 100kHz loop filter with the next components: >> > C82 = 100pF, C83=1500pF, C84=33pF, R106=2.2k, R109=3.3k. >> > To get good noises replace choke L6 by capacitor 10nF..22nF and remove >> > C45. >> > >> > I ask you because I have to send final BOM as soon as possible to avoid >> > delay of UmTRXv2 production due to changes for improvements. >> > >> > Best regards, >> > Andrey Sviyazov. >> > P.S. Pictures attached just to be sure. >> > >> > >> > 2012/7/23 Andrey Sviyazov <andrey.sviyazov at fairwaves.ru> >> >> >> >> >> >> > > Perhaps this is a silly question, but how do I calibrate the clock? >> >> > > or >> >> > > use an external reference signal? >> >> > >> >> > Andrey Sviyazov - does ClockIn works as external input in UmTRXv1? >> >> >> >> Yes, 5V cmos level required or smaller with DC offset to get 2.5V >> >> symmetry. >> >> Turn switches to MHz and slave positions. >> >> >> >> Best regards, >> >> Andrey Sviyazov. >> >> (Sent from my mobile client) >> > >> > >> >> >> >> -- >> Regards, >> Alexander Chemeris. >> CEO, Fairwaves LLC / ООО УмРадио >> http://fairwaves.ru -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru