It's the DC offset of the direct conversion transmitter. With the X310,
you can move it out of the signal with a tune_request(). You can move
the spike up to 1/2 the sample rate in either direction. Here's an
example at 6.912 Msps.
uhd.tune_request(center_freq, 340)
ATSC 3.0 OFDM
This is
An ofdm signal, which is generated in python, presents a peak in the
central part of the spectrum. What could it be?
This same behavior appears on USRP X310 and HackRFOne.
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Thanks Rob. I agree. The documentation needs to be reworded to, “Note: There
can always only be one streamer per channel…”. That would probably help people
out.
Regards,
Zach
From: Rob Kossler
Date: Thursday, February 22, 2024 at 3:13 PM
To: Rohde, Zach (US 333G)
Cc: usrp-users@lists.ettus.co
Hi Zach,
There can definitely be multiple tx streamers (& rx streamers). Take a
look at the Ettus rx_samples_to_file example which does this with rx
streamers. You are probably doing everything right already. The
documentation might be just poorly worded such that maybe it should say
that you can
Hello,
I have been running tests with multiple TX channels so that each channel can
run at a different sample rate, using multiple calls to get_tx_stream() to
generate a unique streamer for each thread. This has been successful using the
X440 and results in no errors or warnings.
My question i
On Thu, Feb 22, 2024 at 3:02 PM wrote:
> CRITICAL WARNING: [Route 35-39] The design did not meet timing
> requirements. Please run report_timing_summary for detailed reports.
>
> [01:09:55] Current task: Routing +++ Current Phase: 22 Post Router Timing
>
> [01:09:55] Current task: Routing +++ Cur
Could anyone guide me to fix through the critical warning?
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CRITICAL WARNING: \[Route 35-39\] The design did not meet timing requirements.
Please run report_timing_summary for detailed reports.
\[01:09:55\] Current task: Routing +++ Current Phase: 22 Post Router Timing
\[01:09:55\] Current task: Routing +++ Current Phase: Finished
\[01:09:55\] Executing
