Slight update. When the tune result reports the actual frequency as 450 MHz for a requested frequency of 2450 MHz, the 450 MHz represents an LO at 360 MHz and a digital IF of 90 MHz. Not sure why but that is what is happening. The digital IF is truly at 90 MHz. The LO is not at 360 MHz but at the requested 2450 MHz. Thus, when I checked for the signal yesterday, it was not at the requested frequency only because of the digital IF. If I set the digital IF to 0, then the signal shows up at 2450 MHz (but still reporting that it is at 360 MHz).
On Tue, Nov 14, 2023 at 10:45 AM Marcus D. Leech <patchvonbr...@gmail.com> wrote: > On 13/11/2023 22:29, Rob Kossler via USRP-users wrote: > > Hi, > I am having an issue with successfully tuning the frequency for the Tx > side of an X310/UBX and it appears to me that a bug was introduced in UHD > 4.4 (I haven't checked more recent versions, but I expect that they are > also affected). The issue is that when you request a frequency such as > 2450 MHz, the tune result returns with an actual frequency around 450 MHz, > and there does not appear to be an RF signal at the requested frequency. > > I submitted an issue with Ettus' issue tracker. But, given the severity of > this issue, I wanted to check with other users to find out if anyone is > using the X310/UBX with UHD 4.4 or above and having success with Tx > tuning. If so, then it seems I am wrong. Can anyone confirm one way or > the other? > Thanks. > Rob > > I haven't tried this myself. There may be others in the support org. who > can try to reproduce and I've rattled their cage. > If this is real (and it hasn't been fixed in subsequent releases) it's > bad. > > > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
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