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The iio-oscillscope on the zedboard shows the wrong signals

Question asked by littlebird on Dec 15, 2016
Latest reply on Dec 20, 2016 by DragosB

For my project ,I rebuild the linux kernels and devicetree.dtb according to Building the 2014_R2 release Linux kernel and devicetrees from source [Analog Devices Wiki] .Then I change the kernels and devicetree.dtb to the SD card. Then I capture the signals I transmit,but it shows wrong results,what's more,whatever I configure the FMComms2/3/4,it shows the same signals,here the figure:

the configuration

                                    the configuration

the result



Anybody knows what's wrong ?