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In Reply to: RE: Surprisingly posted by Todd Krieger on November 06, 2009 at 13:18:12
Are you saying that the bandwidth of the TOSLINK convertors is so much lower than a normal driver and cable connection that the high frequencies (RF) are completely attenuated, or that the optical cable is immune to outside airborne RFI that may be picked up on a conventional cable? The latter is true, though that won't stop RF from the transport, which will be on the signal line and passed through either wire or TOSLINK connections, though many TOSLINK implementations have pretty severe rise time filtering to avoid ringing on the transmission side. That filtering is one of the reasons that the TOSLINK connection usually results in much higher jitter in the recovered clock in the DAC.
One of the main benefits of TOSLINK or glass fibre connections in audio systems is to prevent the radiated RFI from the digital cable that happens in some installations.
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