On 2021-11-07 05:29, Arhum Ahmad wrote:
Dear sir,
I am using B210 and B205mini-i. I have a few doubts. I hope you can
help me. Doubts are listed below:
1) In matlab simulink there is an option of master clock rate, but no
description can you please elaborate on that. Also it has some limit
i.e., 56e6 Hz what happens if I use more than this limit.
There's no way to select greater than 56MHz. The RF front-end chip
cannot be driven faster than that.
2) Is there any relation to select center frequency, master clock
rate, interpolation/decimation factor and gain.
The master clock rate determines that sample-rates that can be delivered
to the host PC, but is in no way related to tuning frequency or gain.
The sample-rate deliver to the
host must have an integer relationship to the master clock rate. By
default UHD will select a master clock rate that is "reasonable" for
your desired sample rate.
3) Can you give the range of suitable gain.
The gain section of the knowledge-base article will be of some help (as
will the rest of that article).
https://kb.ettus.com/B200/B210/B200mini/B205mini#Gains
4) There is an example in matlab for frequency calibration while using
that when I plot the spectrum it's the same with or without antenna
which suggest it is not working correctly. Can you suggest where the
problem might be?
Since this isn't a MatLab support list, no I cannot. I can *guess* that
this is a case where you have the gain turned down too low.
5) I am trying to send a simple QPSK signal and receive(example from
matlab simulink). All blocks work fine in simulation but when I use
USRP for Tx/Rx BER is always 0.5 and I think usrp is not detecting any
signal. Is there any parameter mismatch?
Possibly gain settings, and I MUST emphasize that if you're cabling-up
two USRPs for RX/TX or you're looping-back on a single USRP, you MUST
ABSOLUTELY use a 30dB
attenuator in-line, and use the minimum TX gain that allows
success. But, again, this isn't a MatLab support group, so I"m just
guessing as to what might be wrong.
On Sat, Nov 6, 2021 at 5:44 PM Marcus D Leech
<patchvonbr...@gmail.com> wrote:
Yes. Just go ahead and ask your question.
Sent from my iPhone
On Nov 6, 2021, at 6:32 AM, Arhum Ahmad via USRP-users
<usrp-users@lists.ettus.com> wrote:
Respected sir,
Is this the right email to to ask doubts?
--
*Thanks and Regards**
*
*Arhum Ahmad*
Ph.D. Scholar, Electrical Engineering Department, IIT Ropar
+91- <tel:+91-7015802356>7974897279
| arhum.19eez0...@iitrpr.ac.in <mailto:2016eez0...@iitrpr.ac.in>
Lab No. 323, Communication Research Lab, J.C.Bose Building
*
/CONFIDENTIALITY NOTICE: The contents of this email message and
any attachments are intended solely for the addressee(s) and may
contain confidential and/or privileged information and may be
legally protected from disclosure. If you are not the intended
recipient of this message or their agent, or if this message has
been addressed to you in error, please immediately alert the
sender by reply email and then delete this message and any
attachments. If you are not the intended recipient, you are
hereby notified that any use, dissemination, copying, or storage
of this message or its attachments is strictly prohibited./
*_______________________________________________
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@lists.ettus.com
--
*Thanks and Regards**
*
*Arhum Ahmad*
Ph.D. Scholar, Electrical Engineering Department, IIT Ropar
+91- <tel:+91-7015802356>7974897279 | arhum.19eez0...@iitrpr.ac.in
<mailto:2016eez0...@iitrpr.ac.in>
Lab No. 323, Communication Research Lab, J.C.Bose Building
*
/CONFIDENTIALITY NOTICE: The contents of this email message and any
attachments are intended solely for the addressee(s) and may contain
confidential and/or privileged information and may be legally
protected from disclosure. If you are not the intended recipient of
this message or their agent, or if this message has been addressed to
you in error, please immediately alert the sender by reply email and
then delete this message and any attachments. If you are not the
intended recipient, you are hereby notified that any use,
dissemination, copying, or storage of this message or its attachments
is strictly prohibited./
*
_______________________________________________
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@lists.ettus.com
