I'm trying to use the GPIO ATR functionality on an E310 using a 'Python
Snippet' block in Gnuradio. I have code that works this way for a B210 and
am adapting it to work for the E310. However, I have not had any success.
The get_gpio_attr READBACK attribute (reads back input GPIOs but can also
On 01/05/2024 11:00, zhou wrote:
On Wednesday, 1 May 2024 at 15:15:12 BST, Marcus D. Leech
wrote:
On 01/05/2024 10:11, zhou via USRP-users wrote:
Hi Marcus,
Thanks for your response.
"Are you setting up clocking identically for both USRPs? That is
setting the reference clock to
It’s also why you can’t get tight instantaneous phase alignment between two GPSDO devices even when on the same antenna. Sent from my iPhoneOn May 1, 2024, at 2:12 PM, Rob Kossler wrote:The 10 MHz ref supplied to each X310 device is used in a PLL in each device to obtain the 10MHz ref used for
How fast do you need to tune it?
No synthesizer that is optimized to reduce phase noise and frequency error can
tune instantly.
What is the scale of the goal?
Sent from my iPhone
> On May 1, 2024, at 2:42 PM, Olo via USRP-users
> wrote:
>
>
> Would it be possible, with the USRP X310
Would it be possible, with the USRP X310 with TwinRX (or two TwinRX units), to
achieve the mentioned goal? If so, could you please explain the approach to
accomplish this? Thank you.
On Tuesday, April 30th, 2024 at 9:20, Olo wrote:
> Hi there,
>
> I'm USRP B210 for a project. I'm trying to
This is true of any pair of PLL synthesizers even when using a shared reference.My next question was going to be “how is phase measured?”Sent from my iPhoneOn May 1, 2024, at 2:12 PM, Rob Kossler wrote:The 10 MHz ref supplied to each X310 device is used in a PLL in each device to obtain the
The 10 MHz ref supplied to each X310 device is used in a PLL in each device
to obtain the 10MHz ref used for that device (and for disciplining the
various LOs on the device). Thus, there is a relative phase "wobble"
between the 10MHz ref signals used on each device as each PLL continuously
adjusts
On Wednesday, 1 May 2024 at 15:15:12 BST, Marcus D. Leech
wrote:
On 01/05/2024 10:11, zhou via USRP-users wrote:
Hi Marcus,
Thanks for your response.
"Are you setting up clocking identically for both USRPs? That is setting
the reference clock to "external" and the
On 01/05/2024 10:11, zhou via USRP-users wrote:
Hi Marcus,
Thanks for your response.
"Are you setting up clocking identically for both USRPs? That is
setting the reference clock to "external" and the 1PPS source to
"external" on both devices? Are you using a single multi_usrp object
for
Hi Marcus,
Thanks for your response.
"Are you setting up clocking identically for both USRPs? That is setting the
reference clock to "external" and the 1PPS source to "external" on both
devices? Are you using a single multi_usrp object for all RX channels?"
Yes, I use multi_usrp
On 01/05/2024 08:25, zhou via USRP-users wrote:
Hi All,
I am trying to use 4Rx and 4Tx antennas from two X310 USRPs. I hope
the received signals have stable phase relationship but they don't
seem to be. I am wondering why and how to fix it.
I measured the phase using the connection as
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