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Yes, there is a 30 dB attenuator before the splitter.
From: Discuss-gnuradio <discuss-gnuradio-bounces+mvl5023=psu.edu@gnu.org> on behalf of Marcus D. Leech <patchvonbraun@gmail.com>
Sent: Wednesday, July 27, 2022 2:36 PM
To: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Re: Receiving on two channels with E310/E312
On 2022-07-27 14:22, Lipski, Michael Victor wrote:
Sure, screenshot of flowgraph is included. GRC version is 3.8, UHD is 4.1.0.
The E310 is being used in networking mode for some very basic testing. I have an E312 set up as to transmit a sine wave output (USRP Sink), which is connected over SMA to the E310 Rx ports (USRP Source). This works fine with a single Rx channel, and I can
split the output of the transmitter and feed it to two different E310s, which works just fine as well. However, if I try to receive them both on the same E310, I get an error.
On a separate note, I assume you have 30-50dB of attenuation inserted into the lines between the TX and RX?
On 2022-07-27 13:40, Lipski, Michael Victor wrote:
I tried both options; "A:A A:B" was invalid; it seems to accept "A:0 A:1", except that it gives me the same error message: "Runtime
Error: port number 1 exceeds max of 0."
Everything works fine with a single receive channel. I have also tried streaming a single receive channel from two different
E310s, which works just fine as well. As soon as I try to add a second Rx channel, the flowgraph stops working.
Could you perhaps share the flow-graph with the list, and which version of UHD, Gnu Radio you're using? Are you running on the E310 itself, or using
"network mode" ?
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