Transition Density

Transition Density is the ratio of Transitions to Symbols in a digital signal. A 1010 pattern results in a transition density of 100%, which results in an error pulse in the error signal for every clock cycle. A PRBS pattern has a transition density of 50%, which results, on average, in a pulse in the error signal every two clock cycles. The transition density is sometimes used in a PLL to set the loop bandwidth.

Transition Density can be measured only on a live Response graph but not a Response that is saved in a Response memory. The measurement Count listed in the results table counts the number of data point acquisitions. For all other measurements the Count indicates the number of measurement sweeps.

SCPI Command

:MEASure:RESPonse:TDENsity?