I am using the zc702 eval board and the FMCOMMS1. I am trying to set the test mode of the ADC, AD9643. I am using the XCOMM_SetAdcTestMode function. I have been able to set each Test Mode in the XCOMM_AdcTestMode enum for channel A and channel All. However, I am not able to set any test mode for channel B, i.e. XCOMM_AdcChannel_B in the XCOMM_AdcChannel enum. The XCOMM_GetAdcTestMode function returns only the previously set test mode. Does anyone know why I would be able to update channel A and All but not B?