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Only Tx lo output, No any wanted signal

Question asked by luckfyzhang on Jan 29, 2018
Latest reply on Feb 2, 2018 by luckfyzhang

We are debugging a self-build AD9361 board now. We have produced two board based on the same design. A known issue is that we used single ended Tx output mode which is not suported by AD9361. We cannot get any tone output
except a lo signal, on the first board. However, on ther second board an modulation signal could be got with low amplitude(only about -40dBm max). I have used BIST test namely setings in register 0x3F4 and 0x3F5, and still
only get lo signal. Maybe the problem lies in hardware. Can any body provided me some clues?

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