Andrew L. Weekes Wrote: > Out of curiosity, where is the jitter measurement being made, is it > demodulated at the analogue output? > > Just based on my quick calc's, in a 20k bandwidth, 3.5ns would equate > with only 67dB dynamic range, which I'm sure isn't the case, 1nS would > only be around 78dB. > > I wonder if the analyser's jitter is also wrapped up in that > measurement somehow? > > Are you having fun learning the new toy anyway :-) > > Andy.
That's a pk-pk measurement and really says nothing about the distribution or the spectrum of the jitter. I'm only considering it useful as a rough relative measure for quickly comparing different setups. The dscope manual describes in not much detail what the hardware is doing (page 155): http://www.prismsound.com/downloads/dS3_Operation_Manual_A4nc.pdf You can see the demodulated jitter content in the audio band in the FFT view - it is basically flat, and you can see the level drop slightly with the linear PS. I don't have a lot of time at the moment to do more tests but when I have more data I will post it. -- seanadams _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
