Hi all,
Theoretically, in frequency domain, the spectrum for SQUARE wave should be a
SINC and for the spectrum of RAMP wave should be decreasing with every odd
harmonics. A question that I want to ask is, will I get to see these frequency
spectrum in the Spectrum Analyzer after being transmitt
Hello,
the clocking scheme has been recently changed, as of
https://github.com/EttusResearch/fpga/commit/89957c3f30d3e17ddd43622277cbec299b207805
But it seems that the rfnocmodtool Verilog template did not receive the
required changes, i.e., it leaves bus_clk and reset unconnected on the
axi_wrap
Hello Peter,
thank you for noticing this. We will take care of this shortly.
- Nicolas
On Tue, May 8, 2018 at 10:57 AM, Peter Horvath via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hello,
>
> the clocking scheme has been recently changed, as of
> https://github.com/EttusResearch/fpga/com
Hi all,
We are building an application using multiple X300s under Ubuntu 16.04,
using UHD 3.10.3.0
The application needs to transmit data to different X300s, depending on the
status of the application.
So, each time we need to transmit data to a different set of X300s, we
destroy and re-create a u
Hi Jeff,
Thanks for your response, but you understood me completely wrong.
Of course I have set the RF freq in the source block. Furthermore, I
have fully analized the signal from both chanels, and it appears
crystal clear in all the sinks throughout the flow graph (e.g., a pure
max at the correc
Is it feasible for your application to just have one streamer for all your
X300s, but just stream 0s on the channels you arent using? I have also
found that re-configuring streamers is messy.
On Tue, May 8, 2018 at 2:21 PM, Serge Malo via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hi all,
some small things:
* I am pretty sure you cables are not phase matched (costs about 5K for a 26”
matched pair), so you will get some difference there. Not sure how to quantify.
* Splitters have a phase mismatch, I think its called phase unbalance,
proportional to cost :), but can be multiple deg
Steve , I got the feeling from your original message, though you didn’t say it
outright, that you might be using the same USRP its self as the signal
generator with loopback cables.
If so, beware “self receive” via paths other than your calibrated length cables
confusing the results, a sensiti
On 05/08/2018 12:34 PM, ROBIN TORTORA via USRP-users wrote:
some small things:
* I am pretty sure you cables are not phase matched (costs about 5K
for a 26” matched pair), so you will get some difference there.
Not sure how to quantify.
* Splitters have a phase mismatch, I think its
Thanks everyone for trying to sort this out!
Robbin - as you stated yourself, spliiters and channel coupling should have
minor effect, especially in our case where the wavelength is larger than
the whole system.
Ian - I am actually using a proper external signal generator. No loopbacks.
Anyone h
On Tue, May 8, 2018 at 12:23 PM, shachar J. brown via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Thanks everyone for trying to sort this out!
>
> Robbin - as you stated yourself, spliiters and channel coupling should
> have minor effect, especially in our case where the wavelength is larger
Thanks William, I'd love to hear your results.
concerning your proposal - I didn't quite understand how to implement it.
As I understand it, the AD9361 chooses whatever baseband it deems fit for
the given receiver being implemented. How can we know what baseband the
AD9361 has decided to choose?
On 05/08/2018 02:39 PM, shachar J. brown via USRP-users wrote:
Thanks William, I'd love to hear your results.
concerning your proposal - I didn't quite understand how to implement
it. As I understand it, the AD9361 chooses whatever baseband it deems
fit for the given receiver being implemented
On 05/08/2018 02:17 PM, Reinhold Frederick William Hollender via
USRP-users wrote:
The additional cable length acts as a time delay, so I would calculate
the expected phase difference based on the frequency of the baseband
signal, not the RF signal. I have a couple different cable lengths,
On Tue, May 8, 2018 at 1:51 PM, Marcus D. Leech via USRP-users <
usrp-users@lists.ettus.com> wrote:
> On 05/08/2018 02:17 PM, Reinhold Frederick William Hollender via
> USRP-users wrote:
>
>
>
> The additional cable length acts as a time delay, so I would calculate the
> expected phase difference
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