72                               Keysight X-Series Signal Generators Error Messages
Error Messages
List of Error Messages
     are dBm, dBuV, dBuVemf, V, and Vemf.
            An attempt was made to change the units used when reporting the
            amplitude value through SCPI or displaying it on the front panel.
            The units specified conflict with the amplitude reference state. If 
            amplitude reference state is on, power units must be dB. If
            amplitude reference state is off, allowable power units are dBm,
            dBuV, dBuVemf, V, and Vemf.
-221 Settings conflict; Illegal setting of DCH state. Transport
     channels(DCHs) must be turned  on sequentially.
            Transport channels must be turned on sequentially. For example,
            channels 1,2 and 3 must be turned on before channels 4 through 6
            can be activated.
-221 Settings conflict; In Dedicated operating mode for the AUX port, the
     only supported input strobe mode is Free Run.
            When the AUX port's operating mode is Dedicated, the only supported 
            input strobe mode is Free Run.
-221 Settings conflict; In fixed position the block size must be either 0
     or equal to block set size. The block size has been set to the block
     set size.
            In fixed position mode the block size must be equal to either the
            block set size or 0.
-221 Settings conflict; In the F-PDCCH overlaid mode, the relative power of
     the F-PDCCH1 is different from the F-PDCCH0's.