Instruction manual

DAC1 PRE Instruction Manual Rev I Page 33
Jitter Tests
AES Jitter Tolerance Test
The graph above shows the results of a standard AES jitter tolerance test.
The top (red) curve shows the amplitude of the jitter applied to the inputs of the DAC1. The scale
for the top curve is on the right hand side of the graph and is calibrated in UI of jitter.
The bottom (green) curve shows the THD+N of the DAC1 as the jitter amplitude and frequency is
varied at the inputs of the DAC1. There is absolutely no change in the DAC1 THD+N
measurement over the entire range of jitter test frequencies and amplitudes. In fact, the DAC1
can tolerate much higher levels of jitter without any measurable change in performance (see the
next graph).