66                               Keysight X-Series Signal Generators Error Messages
Error Messages
List of Error Messages
-221 Settings conflict; DCH generation is not support with a DPCH slot
     format of 16.
            DCH generation is not support with a DPCH slot format of 16.
-221 Settings conflict; The DCH which is referenced by 3GPP Uplink AWGN
     must be on.
            The DCH which is referenced by AWGN Eb Ref is off. To avoid this,
            set the DCH to on.
-221 Settings conflict; Differential encoding has been turned off.
     Differential encoding does not work above 50 Mbps.
            Differential encoding does not work above 50 Mbps.
-221 Settings conflict; The Digital Data state could not be turned on
     because the module was not connected. Please connect the module before
     turning the state on.
            This error is generated if the module is not connected when digital 
            data is turned on.
-221 Settings conflict; The Digital Data state could not be turned on
     because there is no Format turned on. Please turn on a format before
     turning on the digital module.
            When turning the digital module on, a check is made to see if a
            format is turned on. This error is generated when no format is
            found.