Hello,
I have installed RFNoC and UHD driver. But I cant load a RFNoC image in my
USRP-X310:
cruiz@DASPC034:~$ sudo uhd_images_downloader
[INFO] Images destination: /usr/local/share/uhd/images
[INFO] No inventory file found at /usr/local/share/uhd/images/inventory.json.
Creating an empty one.
000
Dear All,
I've seen that with the gnuradio API it is possible to set a frequency
and time in the future for a bursty transmission. With that feature it
is possible to implement frequency hopping without any big trouble.
I'd like to know if the same is possible with the UHD API, and if so,
how can
Hi everyone,
me again with the questions. :) Next thing I am trying to learn is RFNoC
FIR filter. I see that the only thing I can modify for the filter is filter
taps. Is there any official documentation on those blocks? I am trying to
figure out what values should I enter there if, i.e. I want to
Hello Felipe,
Yes it is possible. What USRP are you using? Some, such as the B200 and
E310 cannot set the frequency using timed commands as the tuning is done by
the RFIC rather than the FPGA. There is a small example of tuning in the
manual.
http://files.ettus.com/manual/page_sync.html#sync_phase
Dear Derek, thanks for your prompt reply!
I'm using an x310.
Just to clarify, I want to make sure that the frequency I'm setting is
only valid and guaranteed for that specific starting point (the
timestamp into the future). Right now, when I send just the time
command and change the frequency for
Hello Felipe,
The oscillator will *start* tuning at the time stamp you specify. You will
have to characterize the settling time for your frequency hops and schedule
the tunes in advance of when you need to be at the new frequency. Depending
on what frequencies you are moving between and which daug
Just to clarify source of FPGA_REFCLK_10MHz_p/n signals (pins AG24, AH24).
I have not found them in the schematic. Do they come from SY89547 or from
LMK04816?
thanks,
Dmitry
пн, 18 июн. 2018 г. в 22:27, Ian Buckley via USRP-users <
usrp-users@lists.ettus.com>:
> Dmitry ,
> Yes that will cause yo
Dear Derek, thanks!
Last question, are there any commands in the C API that do the same as
the following ones?
//we will tune the frontends in 100ms from now
uhd::time_spec_t cmd_time = usrp->get_time_now() + uhd::time_spec_t(0.1);
//sets command time on all devices
//the next commands are all ti
Yes, I believe all of those commands are exposed in the C API.
For instance,
https://github.com/EttusResearch/uhd/blob/maint/
host/examples/rx_samples_c.c#L175
If you have the ability to use the C++ API for your application I would
generally recommend that as it is the native API for UHD. The C a
Driven from pins 14 and 15 (10MEG_R_P/N) of SY89547 from page 12….that page of
FPGA pinning is redacted because it contains other proprietary info that NI
doesn’t want to release.
-Ian
> On Jun 19, 2018, at 8:20 AM, Дмитрий Михайличенко via USRP-users
> wrote:
>
> Just to clarify source of F
HI,
1. How can I save the output of a TAG DEBUG in a file ?
2. What are there any way that I can format the file structure according to
my need ? Like saving the timestamp in the 1st row…
Thanks,
Ayaz
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On 06/19/2018 10:28 AM, Nives Novković via USRP-users wrote:
Hi everyone,
me again with the questions. :) Next thing I am trying to learn is
RFNoC FIR filter. I see that the only thing I can modify for the
filter is filter taps. Is there any official documentation on those
blocks? I am trying
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