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From: | Dan Halperin |
Subject: | [Discuss-gnuradio] Testing flex2400 |
Date: | Thu, 09 Nov 2006 21:56:37 -0800 |
User-agent: | Thunderbird 1.5.0.7 (X11/20060926) |
Hi,Are there any good (standard) tests for the flex2400, or can anyone tell me what I'm doing wrong?
I tested the BasicRX and BasicTX boards by plugging a shielded wire between them, running usrp_oscope.py, and running the test_usrp_standard_tx script. Signal in, signal out - happiness, after I matched interpolation rates to eliminate overruns and set up sufficient sampling frequencies.
I'm trying to test the flex2400 the same way - I stuck a wire from the TX/RX socket to the RX2 socket, ran usrp_oscope, and ran the standard tx script. Nothing. I've tried different frequencies, playing with the gain, and all kinds of other things, but I don't see any change in the signal.
A second question is: With the basic boards as described earlier, I run [usrp_fft.py -f 1M -d 32] and then run the signal generator [usrp_siggen.py -f 1M -i 32]. The spectrum I see has a small peak (but, at 0db) centered at 0 and then a large peak >50db near +0.1MHz. What is going on here?
Thanks, -Dan
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