On 2022-05-05 10:18, Peter Featherstone wrote:
Hi all,
Some help would be great.
I have an E320 and would like to capture IQ samples on 2 different
channels at different frequencies.
Is this possible?
The short answer is "no" -- because there's only 1 RF LO for each of TX
and RX -- that's how the AD9361 chip
does MIMO.
The longer answer is that if your two frequencies are within the analog
bandwidth of the AD9361, you can do some
DDC tricks to bring them both down to baseband before presentation to
the host. In your case, this isn't possible, since
the "split" is over 1GHz.
When I run the following:
usrp->set_rx_freq(2.1e9, 0);
printf("Channel 0 freq %f\n", usrp->get_rx_freq(0));
printf("Channel 1 freq %f\n", usrp->get_rx_freq(1));
usrp->set_rx_freq(3.2e9, 1);
printf("Channel 0 freq %f\n", usrp->get_rx_freq(0));
printf("Channel 1 freq %f\n", usrp->get_rx_freq(1));
I get:
Channel 0 freq 2.1e9
Channel 1 freq 2.1e9
Channel 0 freq 3.2e9
Channel 1 freq 3.2e9
Do you have to configure the channels or something?
Thanks,
Pete
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