Hi all,
a lot going on here, but let me just confirm a few things:
- The _200 suffix is derived from the max analog bandwidth you get, but
like Chris says there is no analog filtering on the X440, so really it's a
maximum sampling rate (of 250Msps). With the _200 image, you get access to
resample
Chris Rogers wrote:
> I’d suggest taking a look at this section of the manual
> https://files.ettus.com/manual/page_usrp_x4xx.html#x440_usage_mcrs and the
> link Marcus sent
> https://kb.ettus.com/About_Sampling_Rates_and_Master_Clock_Rates_for_the_USRP_X440.
> This is a unique USRP architecture t
I’d suggest taking a look at this section of the manual
https://files.ettus.com/manual/page_usrp_x4xx.html#x440_usage_mcrs and the
link Marcus sent
https://kb.ettus.com/About_Sampling_Rates_and_Master_Clock_Rates_for_the_USRP_X440.
This is a unique USRP architecture that requires some frequency and
Thank you, Chris.
I have updated the FPGA image from the USRP X440 to the X4_200, and upon
executing, the sampling rate has been reduced to approximately 5 Msps.
Another matter I would like to inquire about is whether it is possible to
reduce the analog bandwidth of the signal from 200 MHz to
On 06/02/2025 13:44, Chris Rogers wrote:
Marcus is correct, you need to upload an FPGA image that has DUC/DDC
enabled to get arbitrary sample rates in/out. Try using
uhd_image_loader to put the X4_200 image on, which I believe does
support DUC/DDC. Then try the 5 MHz rate
Thanks. I don't have
Marcus is correct, you need to upload an FPGA image that has DUC/DDC
enabled to get arbitrary sample rates in/out. Try using uhd_image_loader to
put the X4_200 image on, which I believe does support DUC/DDC. Then try the
5 MHz rate
On Thu, Feb 6, 2025 at 1:05 PM Marcus D. Leech
wrote:
> On 06/02
On 06/02/2025 13:02, Rilbert Lima via USRP-users wrote:
I ran the test using 5e6, however, the same error occurred.
root@ni-x4xx-342597F:/usr/lib/uhd/examples# ./benchmark_rate --rx_rate
5e6 --tx_rate 5e6
…
[00:00:04.955692172] Setting device timestamp to 0...
[WARNING] [0/Radio#0] Reques
I ran the test using 5e6, however, the same error occurred.
root@ni-x4xx-342597F:/usr/lib/uhd/examples# ./benchmark_rate --rx_rate 5e6
--tx_rate 5e6
…
\[00:00:04.955692172\] Setting device timestamp to 0...
\[WARNING\] \[0/Radio#0\] Requesting invalid sampling rate from device: 5 MHz.
Actual
On 06/02/2025 12:52, Rilbert Lima da Silva via USRP-users wrote:
We are encountering an issue when trying to run the benchmark directly
on the USRP X440. During the test execution, we receive the following
error:
RfnocError: OpTimeout: Control operation timed out waiting for ACK.
This error o
