In the IIO Oscilloscope, one can change the Dec PWR mess. duration in the FMCComms2/3/4/5 Advanced menu. The default value is 8192 which should be corresponding to 0x15C register value of 0x79. But no matter how do you change the 8192 value in the menu, 015C value will never be larger than 0x77. In anther word, It is impossible to have a large PWR mess. duration. Is this a bug?