I want to know if the device can be placed in a loop back mode, RX-TX under full duplex mode. Can I input a modulated QPSK signal on the RX side and see the same modulated signal on the TX outputs? I am in the process of designing the hardware such that the device can be qualified over temperature for a Military application and this would provide the best test coverage since it would basically test all the paths. I need to have the hardware schematic completed very soon, but if this mode of operation is not do-able do not want to waste my time. Can you please provide details on loop back as the data sheet and other documents on ADI refer to this mode of operation but not details are provide.