On 2022-04-22 12:32, Zeng, Huacheng wrote:
Hi All,
Can anyone having successful experience with X310 + two BasicRX
Daughterboards confirm that such a setup works? We can make it work
for the following settings: i) X310 + one BasicRX, ii) X310 + two
BasicTX, iii) X310 + two SBX for both TX and RX, iv) two N210 + MIMO
cable + two BasicRX. But we are not able to make it work for X310 +
two BasicRX. We tried different UHD versions (4.2, 3.15, etc.) and got
no luck.
Any suggestions would be appreciated!
Hua
There is some updated documentation for basic_rx with X3xx with UHD 4 here:
https://files.ettus.com/manual/page_dboards.html#dboards_basicrx
On Tue, Apr 19, 2022 at 10:44 PM Zeng, Huacheng
<[email protected]> wrote:
Below is a more detailed description of our issue.
1. We have an X310 with two BasicRX boards installed (no BasicTX).
We tried to read the two data streams from X310 on a computer at a
sampling rate 5Msps. The computer displays "OOOOOOOOOOOO" overflow
constantly. We tried other sampling rates such as 1Msps and
10Msps, the observation is the same.
We found that the LED lights on the X310 panel are abnormal. When
X310 works in RX mode, the two LED lights (RF A's RX2 LED and RF
B's RX2 LED) should be on, but we observed they were flashing.
Also, the LINK LED should be on in RED, but we observed that it
was flashing in ORANGE.
We reloaded the FPGA image, but the problem is consistent.
2. We removed BasicRX from X310's RF B channel, and tested one
data stream from X310 RF A's channel, it works (no overflow). We
are sure that the two BasicRX boards have no problem, as they are
brand new.
3. We removed two BasicRX boards and installed two BasicTX boards
on the same X310. We used GNU RADIO to send two data streams to
X310 for signal transmission. It works well and has no overflow
issue.
We want to test X310's RF B channel, but we do not know how to set
the parameters so that GNU Radio can read the data stream from
X310's RF B channel. Would it be an argument like "subdev=B"? It
looks like GNU Radio always gets data stream from RF A channel if
we set the channel number to 1. Please suggest if it is possible.
Any suggestion and help would be appreciated!
On Tue, Apr 19, 2022 at 6:03 PM Marcus D. Leech
<[email protected]> wrote:
On 2022-04-19 15:05, Shichen Zhang wrote:
> Hello everyone,
>
> I am doing some experiments and I need to build the 2 by 2
> communication using X310 with the BasicRX Daughterboard. I
use the
> X310 as both the transmitter and receiver. I can
successfully test the
> 1 by 1 case, however, when I test the 2 by 2 case, the overflow
> happened and the program could not be stopped. The RF B
channel seems
> not to work ( LED light for RF B RX not flash).
>
> I have attached the flowchart for your reference.
>
> Best,
> SZ
>
What is your complete hardware configuration? I assume 2 x
BasicRX and
2 x Basic TX?
It may just be the case that your computer simply isn't up to
the task
of moving 20Mssp of data in and out of the radio, along with
doing 2 x
FFTs and computing the
noise sources.
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