Page 1 of 1
IQ data collection
Posted: Wed Feb 22, 2023 9:38 am
by wawdnaw
I am a noob. Now I am using an SDR receiver, how to get the IQ data after digital down-conversion? I don't want to use SDR software.
Re: IQ data collection
Posted: Wed Feb 22, 2023 1:12 pm
by pavel
You can find two Python scripts that can be used to record and playback the IQ data at
this link. They work with the wideband SDR transceiver.
Re: IQ data collection
Posted: Thu Feb 23, 2023 3:41 am
by wawdnaw
Thank you very much for your reply. My model is 125-14, is this py script available? In addition, are these two files flashed to the SD card? As a rookie, I don't know the specific operation steps. My current PC is a Windows system. Do I need to change it to Linux?
Re: IQ data collection
Posted: Thu Feb 23, 2023 3:42 am
by wawdnaw
pavel wrote: ↑Wed Feb 22, 2023 1:12 pm
You can find two Python scripts that can be used to record and playback the IQ data at
this link. They work with the wideband SDR transceiver.
Thank you very much for your reply. My model is 125-14, is this py script available? In addition, are these two files flashed to the SD card? As a rookie, I don't know the specific operation steps. My current PC is a Windows system. Do I need to change it to Linux?
Re: IQ data collection
Posted: Tue Jun 13, 2023 11:36 am
by arutkeerthi
Can you tell me steps on how to get IQ data and continuous acuqisitions uising my redpitaya?
the model I have is also same as you-2 inputs and 2 outpus stemlab-14
Re: IQ data collection
Posted: Thu Jun 22, 2023 10:23 am
by ph2thet
pavel wrote: ↑Wed Feb 22, 2023 1:12 pm
You can find two Python scripts that can be used to record and playback the IQ data at
this link. They work with the wideband SDR transceiver.
Looks very straightforward Pavel. Perfect. Are frequencies above 2.5M sampling too high to store to MMC? Or is it Python not keeping up?
Re: IQ data collection
Posted: Thu Jun 22, 2023 10:41 am
by pavel
I am afraid I do not understand the question and how MMC is involved.
The Python scripts in my comment need to be run on a computer and communicate with the Red Pitaya board via the Ethernet interface.
Here is a link to a forum thread with more details on the project these scripts were developed for:
viewtopic.php?f=7&t=1030&start=10#p32553
For higher sample rates I have a couple of wideband receiver projects:
https://github.com/pavel-demin/red-pita ... eiver_wide
https://github.com/pavel-demin/red-pita ... ide_122_88
They are both dual channel receivers. The sample rates are 3.9 MSPS and 10.24 MSPS. The samples are 16-bit IQ samples.