mmg_fan;273875 Wrote: > Has anyone reviewed their test suite? I'm referring in particular to > their evaluation of jitter in the Transporter.
I am familiar with Miller's jitter test - it is the "j-test" described in this paper by Julian Dunn: http://www.nanophon.com/audio/diagnose.pdf. The test is NOT suitable for a source device, only an S/PDIF DAC (or generally, a DAC which generates its clock by PLL recovery from a manchester-encoded signal). Unfortunately the reviewers do not understand how the test works and they try to apply it to everything with a D->A converter. That simply doesn't work. To characterize something like Transporter, you need far more sensitive equipment and you need to be able to look at clock signals directly. Actually, the Miller test may be of some value in characterizing Transporter's _S/PDIF receiver_, but still I would prefer to use modern test equipment for that. -- seanadams ------------------------------------------------------------------------ seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3 View this thread: http://forums.slimdevices.com/showthread.php?t=43976 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
