78                               Keysight X-Series Signal Generators Error Messages
Error Messages
List of Error Messages
            If all slaves in the Multi-BBG Sync configuration are MXG-As, then
            the number of MXG-A slaves has been lowered by 1 in order for this
            slave to be accommodated as an MXG-B.
-221 Settings conflict; Multi-BBG Sync: Turn off the Modulation Modes in
     all instruments before attempting sync.
            The BBG Modulation Mode (Dual Arb, Multitone, etc) must be off
            before attempting to sync the instruments configured for Multi-BBG
            Synchronization.
-221 Settings conflict; New hardware settings can no longer support the
     last IQ Out selection. IQ Out defaulted to Source 1.
            Based on new settings in the vector modulation system, a previous
            setting related to the IQ Output (rear panel) is no longer valid.
            The setting will be default to the input selected for Source 1.
-221 Settings conflict; New wave shape changes limit for internal
     frequency: frequency changed to new limit.
            When using the internal modulation source, the upper limit varies
            for the different waveforms. If the user changes the waveform when
            the internal source frequency is higher than that allowed for the
            new waveform, the frequency for the source will be changed, and the 
            user informed of that change with this message.
-221 Settings conflict; Nfirst1 - Nlast1 <= 6
            GAP1 is a single frame method gap that is greater than 7 slots
            long. DTX slots per frame should be less than 8.