High resolution cable?
For real?
0's and 1's are 0's and 1's, there isn't better 0's and better 1's.
actually that is both true and untrue.
it is not only about a digital 0 being at digital 0 when it gets to the other end of the cable, and a digital 1 being a digital 1 ----
there's the matter of jitter - if you had a 1 MHz stream of data, you'd have 1 bit being delivered every 1/1,000,000 of a second (that's nanosecond, right?). the input clock of the receiving end (tv, other digital device) "locks on" to the incoming signal and is expecting a new bit every nsec. if those bits don't come timed correctly, it introduces jitter.
in the analog world, jitter means that the analog waveform is not being reconstructed as it was meant to be - in audio, that means loss of fidelity (imaging information, the "rhythym and pace" of music, etc). - it is the reason that 2 pieces of digital audio equipment can sound so different.
in video, it leads to a smearing of the picture. i'm partially guessing at this point, not having analyzed a digital video signal but i'm guessing it could lead to color shift, phase anamolies, ghosting, and a whole host of other picture problems.
...
so how's this affected by a cable? excessive capacitance or inductance in a cable alters the impedance of the cable. can affect the output impedance of the sending device (as seen by the receiver) or the input impedance of the receiving device (as seen by the sender). this all affects the ultimate frequency response of the cable
(inductance increases as the frequency of the signal increases as it = 2(Pi)Fl )
(capacticance is inversely affected by the frequency of the signal as it = 1/[2(Pi)Fc] )
additionally, poor cables my have inadequate shielding - RFI and EMI work wonderous havoc on signals once they get into a cable and additonally, RFI and EMI can saturate input receivers and cause distortion.
ok, my diatribe is now concluded.
K
Latest version 1.3b standard for 340 MHz (10.2 Gbit/s) bandwidth.
There's many like him and me around. I've been around since Anand started his site, just never bother to register hahaha
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