:58 PM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Inconsistant Gain in X310
On 11/24/2014 10:26 AM, Daigle, Andrew - 1008 - MITLL wrote:
Ben,
I have tried injecting both a 50.0 MHz and a 50.1 MHz tone and setting the USRP
with a center frequency of 50 MHz and a sampling rate of
014 7:36 PM
*To:* Daigle, Andrew - 1008 - MITLL
*Cc:* discuss-gnuradio@gnu.org
*Subject:* Re: [Discuss-gnuradio] Inconsistant Gain in X310
Hi Andrew -
What you describe is very strange. There is nothing in the USRP that
changes dynamically based on the input power level (there isn't even
AGC)
-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Inconsistant Gain in X310
Hi Andrew -
What you describe is very strange. There is nothing in the USRP that changes
dynamically based on the input power level (there isn't even AGC). The only
thing I can think of is that somehow the built-
Ben,
I used set_auto_dc_offset(0) and that make things work correctly with the
X310+LFRX.
I noticed in the osmocom source the DC offset mode can be set. So what I'll do
is run it in auto to get the initial correction, halt the flow, then run it in
manual, and it uses the previously found val
On 11/21/2014 10:17 AM, Daigle, Andrew - 1008 - MITLL wrote:
Hello,
I am running into a small issue with the X310 USRP. My basic setup
involves receiving from two antennas (or at this point CW tones from
signal generators) using two basic RX daughter cards.
My problem is that when I pump in
Hi Andrew -
What you describe is very strange. There is nothing in the USRP that
changes dynamically based on the input power level (there isn't even AGC).
The only thing I can think of is that somehow the built-in DC offset
calibration is going haywire. Are you setting the center frequency direct
Hi Lou -
By default, the RX DC offset is enabled. You can disable it with a quick
multi_usrp call:
http://files.ettus.com/manual/classuhd_1_1usrp_1_1multi__usrp.html#a7beb49c1a04a81b3e7569db482453746
Cheers,
Ben
On Fri, Nov 21, 2014 at 10:08 AM, madengr wrote:
> Might want to post this over o
Might want to post this over on the Ettus list, as I am having issue with the
X310 and LFRX and have a few threads on there with examples of diagnosing
it. The DC compensation seems to be always on (bad since the LRFX is DC
coupled), and the digital gain setting seems broke. These may be related
Hello,
I am running into a small issue with the X310 USRP. My basic setup involves
receiving from two antennas (or at this point CW tones from signal generators)
using two basic RX daughter cards.
My problem is that when I pump in a -50 dBm CW tone to channel A the FFT plot
makes sense in that
