Thank you for the response. Ideally what I want is to ensure the samples
coming in from two different antennas are sync’d in time. I have already seen
the app note about coming up with corrections to balance the phase between
antennas.
Currently, when collecting MIMO with the TwinRX I am using the ports from the
same daughtercard to collect in the X310. When collecting MIMO with two UBX
160s in my X310, I am using the both daughtercards to collect the samples. Are
these acceptable setups for MIMO collection?
Judging by your response I will implement the following setup with my
individual X310 Radios.
* No GPSDO
* Sync -> unknown PPS
* Clock Source -> Default
* Time Source -> Default
* GPSDO
* Sync -> unknown PPS
* Clock Source -> GPSDO
* Time Source -> GPSDO
If what I have implemented above is incorrect, please let me know. I look
forward to your response to my two setup questions.
Thank you
Mark
From: Mark Koenig <mark.koe...@iubelttechnologies.com>
Date: Thursday, October 1, 2020 at 12:28 PM
To: "usrp-users@lists.ettus.com" <usrp-users@lists.ettus.com>
Subject: Maximize MIMO Collection with X310
Hello,
I am looking to maximize my MIMO collection utilizing a single X310 radio with
either 2 TwinRxs installed or 2 UBX-160s installed.
In some cases, I have a GPSDO at my disposal. For tasking the radios, I am
using python code which creates and runs a GNURADIO Flowgraph.
Ultimately, I would like to know what to set the following parameter to in
order to have the optimal collection. In the instances I have a GPSDO
installed in the X310, I would guess I should choose the GPSDO option, but what
if I don't?
sync (options are: don't sync, unknown pps, PC Clock)
clock source (options are: Default, Internal, External, MIMO Cable, O/B GPSDO)
time source (options are: Default, External, MIMO Cable, O/B GPSDO)
Thanks,
Mark
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