Re: [USRP-users] Melbourne Users

[hossein talaiee via USRP-users]

Yes, Melbourne Australia

On Thu, Jul 2, 2020 at 9:29 AM Alex Humberstone <
alex.m.humberst...@gmail.com> wrote:

> You mean Melbourne, Australia?
> What exactly are you looking for?
> If you're asking about the community, there's an SDR group meetup there:
> https://www.meetup.com/en-AU/Cyberspectrum-Melbourne
> They been running for like 4 years, and the videos are recorded.
> The content and good speakers are pretty good.
>
>
> On Mon, 29 Jun 2020 at 05:20, hossein talaiee via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>> Hi,
>>
>> I there anyone from Melbourne ?
>>
>> Best Regards
>>
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>>
>
>
> --
> Sincerely,
> Alex-M-Humberstone
> PhD Student
> Klipsch School of Electrical Engineering
> New Mexico State University
> Las Cruces, New Mexico
>
>
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[USRP-users] Melbourne Users

[hossein talaiee via USRP-users]

Hi,

I there anyone from Melbourne ?

Best Regards

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Re: [USRP-users] USRP B2xx Tx Peak power mode

[hossein talaiee via USRP-users]

Dear Marcus,

I use the same signal for NI-5672 and signal changes as expected, I change
A from  2000 to 8 and it must drop 46 dB but does not!

On Tue, Aug 6, 2019 at 4:09 AM Marcus Müller 
wrote:

> Dear Hossein,
>
> the B200 does NOT have a TX power control that would compensate that.
>
> Are you perhaps either not changing A very much, or are you perhaps
> clipping? Driving your B200's TX amplifier into saturation would of
> course mean that you'd not see much of signal power reduction when
> reducing signal amplitude, until you cross the threshold where things
> become linear again.
>
> Best regards,
> Marcus
>
> On Mon, 2019-08-05 at 17:00 +0430, hossein talaiee via USRP-users
> wrote:
> > Hi
> >
> > I want to manually control output power of my USRP with signal level
> > not usrp gain,for example I want to generate a sinusoidal signal with
> > equation:
> >
> >s(t) = A * sin(w*t);
> >
> > and want to change A to control tx power, but when I change it,
> > somehow USRP compensate my change and tries to hold tx power! like it
> > is trying to hold average power.
> >
> > Using NI-5672 signal generator, I am able to control power with
> > setting the power mode to "Peak Power mode" instead of "Average Power
> > mode". I think USRP has something like this to control power. How can
> > I disable it?
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[USRP-users] USRP B2xx Tx Peak power mode

[hossein talaiee via USRP-users]

Hi

I want to manually control output power of my USRP with signal level not
usrp gain,for example I want to generate a sinusoidal signal with equation:

   s(t) = A * sin(w*t);

and want to change A to control tx power, but when I change it, somehow
USRP compensate my change and tries to hold tx power! like it is trying to
hold average power.

Using NI-5672 signal generator, I am able to control power with setting the
power mode to "Peak Power mode" instead of "Average Power mode". I think
USRP has something like this to control power. How can I disable it?
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Re: [USRP-users] B210 EMI in GPS band

[hossein talaiee via USRP-users]

Could you share your EMI test results here for B210 ?

On Sun, Jan 20, 2019 at 12:23 PM Mark-Jan Bastian via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Hi Dave,
>
> You could try a shorter USB 3.0 cable, they can be as short as .2 meters.
> If running from a laptop, run the laptop from battery, reduces a radiating
> power cord and DC/DC charger/switch mode powersupplies from your setup.
>
> Use a second laptop with/or dedicated spectrum analyser and RF probes to
> get
> an idea of the sources and power levels, and (sub) harmonics of clocks
> involved in your cabling setup, and determine how to might enter one of
> the GNSS bands and how you are going to attenuate them.
>
> Mark-Jan
>
> On Sat, Jan 19, 2019 at 06:36:03PM +, d.des via USRP-users wrote:
> > We've experienced some GPS degradation with the B210 running USB3 that
> > was bad enough to kick us off a small test platform. The only way we've
> > found to reduce the EMI to acceptable levels was to use a USB2 cable to
> > force the controller down to the slower speed, and the bandwidth
> > reduction makes for a less-useful test. We did a little chamber testing
> > and putting the radio in a metal box didn't even help unless we put the
> > connected antenna in the box with it. Can anyone share experience or
> > ideas? I'm sorry if this has been covered on the list before, I follow
> > it sporadically and don't know of a good way to search the archives.
> >
> > Thanks,
> >
> > Dave
> >
> >
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Re: [USRP-users] N310 schematics and phase noise

[hossein talaiee via USRP-users]

Any news about N310 schematics ?

On Mon, Mar 26, 2018 at 8:19 PM, Derek Kozel via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Hello Louis,
>
> Yes, the schematics are being prepared for posting. I don't know
> specifically when that will be completed. Unlike the X310 the GPSDO is
> always installed with the N310.
>
> The GPSDO is a Jackson Labs LTE Lite.
> http://jackson-labs.com/index.php/products/lte_lite
>
> The 25 MHz TCXO is a Crystek CXOHDV4-DB3Y
> http://www.crystek.com/crystal/spec-sheets/tcxo/CXOHD4.pdf
>
> I don't have more detailed phase noise information about performance of
> the total reference circuit. Is there more specific information that you
> are looking for?
>
> Regards,
> Derek
>
> On Sat, Mar 24, 2018 at 10:43 PM, Marcus D. Leech via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>> On 03/24/2018 05:54 PM, Louis Brown via USRP-users wrote:
>>
>>> Will the N310 schematics be posted?  I’m specifically needing to find
>>> out the phase noise of the TCXO and GPSDO.
>>>
>>> Thanks,
>>> Lou
>>>
>>>
>>> There is a phase-noise chart on the product datasheet:
>>
>> https://www.ettus.com/content/files/USRP_N310_Datasheet.pdf
>>
>> It doesn't indicate whether this is with the on-board TCXO, or the GPSDO.
>>
>>
>>
>>
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>
>
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Re: [USRP-users] Product Announcement: Simplifying Deployment of Software Defined Radios with USRP N310

[hossein talaiee via USRP-users]

Hi
When schematics will be available?

On Tue, Mar 6, 2018 at 7:38 PM, Wan Liu via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Ettus Research is proud to announce the USRP N310 software defined radio
> (SDR). This SDR delivers reliability and fault-tolerance for deployment in
> large-scale and distributed wireless systems. The USRP N310 simplifies
> control and management of a network of radios by introducing the unique
> capability to remotely perform tasks such as updating software, rebooting,
> factory resetting, self-testing, host PC/ARM debugging, and monitoring
> system health.
>
> The USRP N310 is one of the highest channel density devices on the SDR
> market, offering four RX and four TX channels in a half-wide RU form
> factor. The RF front end uses two AD9371 transceivers, the latest RFIC
> technology from Analog Devices. Each channel provides up to 100 MHz of
> instantaneous bandwidth, and covers an extended frequency range from 10 MHz
> to 6 GHz.
>
> The baseband processor uses the Xilinx Zynq-7100 SoC to deliver a large
> user programmable FPGA for real-time and low-latency processing and a
> dual-core ARM CPU for stand-alone operation. Users can deploy applications
> directly onto the pre-installed embedded Linux operating system or stream
> samples to a host computer using high-speed interfaces such as 1 Gigabit
> Ethernet, 10 Gigabit Ethernet, and Aurora over dual SFP+ ports.
>
> The open source USRP Hardware Driver™ (UHD) API and RF Network-on-Chip
> (RFNoC™) FPGA development framework reduce software development effort and
> integrate with a variety of industry-standard tools such as GNU Radio.
> Users can rapidly prototype and reliably deploy designs for a variety of
> SDR applications such as wireless testbed, remote radio head, spectrum
> monitoring, and more.
> For more information, visit the USRP N310
>  product page or contact
> sa...@ettus.com.
>
> Product Page:
> https://www.ettus.com/product/details/USRP-N310
>
> Regards,
>
> Wan Liu
> Product Manager, Software Defined Radio
> Ettus Research
>
>
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