On 04/22/2019 11:37 AM, Rob Kossler wrote:
Marcus & Ettus folks,
I just experienced a similar issue using gnuradio with the example
rfnoc_fosphor program (the issue being that the frequency I request is
not what I get). This seems to me to be a pretty significant bug.
While playing with
Marcus & Ettus folks,
I just experienced a similar issue using gnuradio with the example
rfnoc_fosphor program (the issue being that the frequency I request is not
what I get). This seems to me to be a pretty significant bug.
While playing with rfnoc_fosphor, I fiddled with the Cordic Freq param
On 04/19/2019 02:37 PM, Rob Kossler wrote:
Not sure about uhd_fft. I know that with rx_samples_to_file, it
behaved fine until I added the timed commands. That's why I sent the
source code attachment so that the problem could be easily duplicated.
Rob
Doh! Sorry. I got distracted by the
Not sure about uhd_fft. I know that with rx_samples_to_file, it behaved
fine until I added the timed commands. That's why I sent the source code
attachment so that the problem could be easily duplicated.
Rob
On Fri, Apr 19, 2019 at 1:15 PM Marcus D. Leech
wrote:
> On 04/19/2019 09:44 AM, Rob
On 04/19/2019 09:44 AM, Rob Kossler wrote:
I had started with a mid-January version of master and that's where I
noticed the issue.
I am using:
UHD_3.14.0.HEAD-0-gf6cacec8
With an X310, using a UBX-160 V1
I'm running with the default clock rate, and getting 25Msps, using a
10MHz lo offset.
I had started with a mid-January version of master and that's where I
noticed the issue.
On Thu, Apr 18, 2019 at 6:00 PM Marcus D. Leech
wrote:
> On 04/18/2019 05:09 PM, Rob Kossler wrote:
>
> OK, so what happens if you use a *positive* LO offset?
>>
>
> It moves in the opposite direction. A
On 04/18/2019 05:09 PM, Rob Kossler wrote:
OK, so what happens if you use a *positive* LO offset?
It moves in the opposite direction. A few remarks:
* I should mention that the behavior I'm seeing with
rx_samples_to_file is not identical to the behavior I'm seeing in
my own
> OK, so what happens if you use a *positive* LO offset?
>
It moves in the opposite direction. A few remarks:
- I should mention that the behavior I'm seeing with rx_samples_to_file
is not identical to the behavior I'm seeing in my own custom app. In my
app, I see unpredictable
On 04/18/2019 04:02 PM, Rob Kossler wrote:
Ok. I couldn't seem to duplicate with the stock "rx_samples_to_file",
but with the following minor mods, I see some of the bad behavior.
This sure looks like a UHD bug to me.
I simply added timed commands around the set_rx_freq() function (see
Ok. I couldn't seem to duplicate with the stock "rx_samples_to_file", but
with the following minor mods, I see some of the bad behavior. This sure
looks like a UHD bug to me.
I simply added timed commands around the set_rx_freq() function (see
snippet below as well as attached source code). Is
I do see in the documentation that the tune result "target_rf_freq"
will match the tune request "rf_freq", which it does in my example
below. So, I suppose the output shown is as expected for my request.
Unfortunately, this doesn't solve my problem of the actual spectrum
being wrong. I may have
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