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Old 28th September 2002, 08:17 PM   #21
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Default Re: To this work with signals below or near 1 µV.

Quote:
Originally posted by HarryHaller
Yes like 0.1 nanovolts perhaps.............
Harry, you complained about my low information value postings. Could you do the same for me in my threads, please?

I was wondering about SPDIF and TOSLINK. How high sampling frequency can this optical link transfer? Can it take 192 kSp? Isn't the frequency 4 times the bit rate (biphase coding)?

I haven't tested myself yet but someone already know I'll be happy to hear more about it.
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Old 28th September 2002, 08:49 PM   #22
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Default SPDIF and TOSLINK

"I was wondering about SPDIF and TOSLINK. How high sampling frequency can this optical link transfer? Can it take 192 kSp? Isn't the frequency 4 times the bit rate (biphase coding)?"


Yes This will work fine.

Seems that H.H. is in a bit of a snit and I don't see much useful from him as of late. I plan to ignore the pompous *** myself as I find him extremly off putting.

Guy
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Old 28th September 2002, 10:04 PM   #23
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Really? The datasheet for TORX173 states a maximum data rate of 6Mbps, which would be fine for stereo 24/96 but not enough for stereo 24/192.
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Old 28th September 2002, 10:47 PM   #24
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It wise to have the datasheets as normal limits but sometimes they aren't true. TOSLINK works to at least 30 meters (100 feet). I have tested it myself. Datasheet says 10.

As a pro it's a death sin to use parts over the limits. You can get into trouble if you assume that parameters are typical instead of min-max. If you still uses parts beyond their limits, it's a calculated risk.

What about transmission links for 192 kSp? What do we have?
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Old 28th September 2002, 10:48 PM   #25
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Default maximum data rate of 6Mbps

The Data Sheet is much too conservative. It have built several of these interfaces and they worked splendidly with very low jitter, vanishy low data errors, and extremely good sonics.

What did you say your professional and educational background was? I didn't wish to confuse you in any further disscussions and would like to try to keep the technical disscussions at your level if possible so as to explain any questions that might arise if I am able to make myself understood to someone with your background.

Guy
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Old 28th September 2002, 11:55 PM   #26
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Here's a bog-standard implementation of the CS43122, being fed a 24/96 signal from a CS8420. The outputs from CS43122 feed FET buffers with active loads. If anyone has a suggestion for a lower distortion FET, I'm listening.

Schematic

I omitted the input and output circuitry, as everyone has different tastes. My inputs will be an optical receiver, coax S/PDIF, and AES/EBU coupled with pulse transformers and switched in with relays. The outputs are coupled through 10µF polypropylene capacitors to XLR and RCA connectors.
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Old 29th September 2002, 12:08 AM   #27
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Default Here's a bog-standard implementation of the CS43122

Should work great as shown. I can't think of a thing I would change.

The Beav
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Old 29th September 2002, 12:11 AM   #28
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Default If you still uses parts beyond their limits, it's a calculated risk.

A very small risk that is usually irelevent in a one off build. He is not going to build a thousand of these after all.
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Old 29th September 2002, 12:23 AM   #29
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Peranders,
Your signature says check out your home page but I don't see any web link. What happen to it?
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Old 29th September 2002, 07:00 AM   #30
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Don't include me in your personal grudge match, or make erroneous assumptions..........

$300 USD for a no-holds-barred DAC? Give me a break, pal. No way, no how. Crap parts, and crap design equal crap sound.......and $$ for some middleman.

Sounds like extreme crap to me.

Jocko
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