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#1
Posted to rec.audio.tech
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SPDIF fanout
I need some advice/info on fanning out SPDIF.
I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m Dirk |
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#2
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote ...
I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. |
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#3
Posted to rec.audio.tech
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SPDIF fanout
Richard Crowley wrote:
"Dirk Bruere at NeoPax" wrote ... I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. Thanks What sort of range can TOSLINK work over? -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |
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#4
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote in
message Richard Crowley wrote: "Dirk Bruere at NeoPax" wrote ... I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. What sort of range can TOSLINK work over? Nominal is 10 meters. Actual distance capability depends primarily on the transmitter's LED power. It can be up to twice as much. |
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#5
Posted to rec.audio.tech
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SPDIF fanout
"Arny Krueger" wrote ...
"Dirk Bruere at NeoPax" wrote Richard Crowley wrote: "Dirk Bruere at NeoPax" wrote ... I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. What sort of range can TOSLINK work over? Nominal is 10 meters. Actual distance capability depends primarily on the transmitter's LED power. It can be up to twice as much. And there are "adapters" that will convert the cheap extruded plastic Toslink media to real glass fibre for a much extended range. And/or one could make a Toslink DA (distribution amplifier) with Toslink (or SPDIF) input, and output transducers that use common computer networking fibre cables. They would be good for 100s of meters, and then adapt back to SPDIF or Toslink. |
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#6
Posted to rec.audio.tech
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SPDIF fanout
"Richard Crowley" wrote in message
"Arny Krueger" wrote ... "Dirk Bruere at NeoPax" wrote Richard Crowley wrote: "Dirk Bruere at NeoPax" wrote ... I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. What sort of range can TOSLINK work over? Nominal is 10 meters. Actual distance capability depends primarily on the transmitter's LED power. It can be up to twice as much. And there are "adapters" that will convert the cheap extruded plastic Toslink media to real glass fibre for a much extended range. And/or one could make a Toslink DA (distribution amplifier) with Toslink (or SPDIF) input, and output transducers that use common computer networking fibre cables. The most common way to extend Toslink is to convert it to coax. Low cost, highly effective products have been around for years. be good for 100s of meters, and then adapt back to SPDIF or Toslink. |
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#7
Posted to rec.audio.tech
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SPDIF fanout
Arny Krueger wrote:
"Richard Crowley" wrote in message "Arny Krueger" wrote ... "Dirk Bruere at NeoPax" wrote Richard Crowley wrote: "Dirk Bruere at NeoPax" wrote ... I need some advice/info on fanning out SPDIF. I want a single stream to a number of different locations. Does anyone do a (say) 1 in N out box/board, ideally with xformer isolation? Also, does anyone do that with optical (TOSLINK maybe)? I'm really looking (ultimately) for a fibre optic solution over ranges of up to 30m It is a pretty straightforward bitstream. This application is similar to the pulse distribution amps we used to use for video (when we had to distribute H-sync, V-sync, blanking, subcarrier, burst flag, etc. independently). I'd think that any cheap composite video DA (like the $30 ones from Radio Shack) would handle SPDIF. It would be nearly trivial to make a Toslink "distribution amplifier" with any number of outs. There are likely comercial ones available. What sort of range can TOSLINK work over? Nominal is 10 meters. Actual distance capability depends primarily on the transmitter's LED power. It can be up to twice as much. And there are "adapters" that will convert the cheap extruded plastic Toslink media to real glass fibre for a much extended range. And/or one could make a Toslink DA (distribution amplifier) with Toslink (or SPDIF) input, and output transducers that use common computer networking fibre cables. The most common way to extend Toslink is to convert it to coax. Low cost, highly effective products have been around for years. be good for 100s of meters, and then adapt back to SPDIF or Toslink. OK. Decided to get an SPDIF to AES amplifier/adapter. Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |
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#8
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote ...
OK. Decided to get an SPDIF to AES amplifier/adapter. Why? Why not just SPDIF over CAT5? Google returns 39,400 hits for that search What does conversion AES get you? Are you saying that you can find only an AES/EBU "distribution amplifier" and not a "SPDIF distribution amplifier"? Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? Dunno why impedance would be an issue. You would have to use the appropriate converter at each end. |
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#9
Posted to rec.audio.tech
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SPDIF fanout
Richard Crowley wrote:
"Dirk Bruere at NeoPax" wrote ... OK. Decided to get an SPDIF to AES amplifier/adapter. Why? Why not just SPDIF over CAT5? Google returns 39,400 hits for that search What does conversion AES get you? Are you saying that you can find only an AES/EBU "distribution amplifier" and not a "SPDIF distribution amplifier"? Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? Dunno why impedance would be an issue. You would have to use the appropriate converter at each end. Well, it will be feeding straight into an AES input on some equipment. So the setup is one AES source feeding three AES inputs over different lengths of cable. -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |
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#10
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote ...
Richard Crowley wrote: "Dirk Bruere at NeoPax" wrote ... OK. Decided to get an SPDIF to AES amplifier/adapter. Why? Why not just SPDIF over CAT5? Google returns 39,400 hits for that search What does conversion AES get you? Are you saying that you can find only an AES/EBU "distribution amplifier" and not a "SPDIF distribution amplifier"? Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? Dunno why impedance would be an issue. You would have to use the appropriate converter at each end. Well, it will be feeding straight into an AES input on some equipment. So the setup is one AES source feeding three AES inputs over different lengths of cable. In that case it makes perfect sense. |
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#11
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote in message ... Decided to get an SPDIF to AES amplifier/adapter. Get one that has 3 outputs. Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? No. The good news is that both CAT-5 and AES would be balanced, 120 ohm impedance. But AES DA's will be tougher. If you run SP/DIF, you can use common video DAs. |
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#12
Posted to rec.audio.tech
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SPDIF fanout
Arny Krueger wrote:
"Dirk Bruere at NeoPax" wrote in message ... Decided to get an SPDIF to AES amplifier/adapter. Get one that has 3 outputs. Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? No. The good news is that both CAT-5 and AES would be balanced, 120 ohm impedance. Probably use CAT5 But AES DA's will be tougher. If you run SP/DIF, you can use common video DAs. Thinking of using this: http://www.murraypro.com/spdif.htm -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |
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#13
Posted to rec.audio.tech
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SPDIF fanout
"Dirk Bruere at NeoPax" wrote ...
Arny Krueger wrote: "Dirk Bruere at NeoPax" wrote ... Decided to get an SPDIF to AES amplifier/adapter. Get one that has 3 outputs. Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? No. The good news is that both CAT-5 and AES would be balanced, 120 ohm impedance. Probably use CAT5 But AES DA's will be tougher. If you run SP/DIF, you can use common video DAs. Thinking of using this: http://www.murraypro.com/spdif.htm Yikes, how much do they get for those? (And how do you do multiple outs?) You could do a 1-SPDIF in and 3 or 4 AES/EBU out converter/DA circuit for $10 (connectors additional) using the circuit in the middle of Tomi's page... http://www.epanorama.net/documents/audio/spdif.html You could even use CAT5 connectors (cheaper than XLR) and avoid the adapters, etc. |
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#14
Posted to rec.audio.tech
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SPDIF fanout
Richard Crowley wrote:
"Dirk Bruere at NeoPax" wrote ... Arny Krueger wrote: "Dirk Bruere at NeoPax" wrote ... Decided to get an SPDIF to AES amplifier/adapter. Get one that has 3 outputs. Can I fan this out to three long unequal length outputs carried on CAT5 without having to worry about impedance matching? No. The good news is that both CAT-5 and AES would be balanced, 120 ohm impedance. Probably use CAT5 But AES DA's will be tougher. If you run SP/DIF, you can use common video DAs. Thinking of using this: http://www.murraypro.com/spdif.htm Yikes, how much do they get for those? (And how do you do multiple outs?) You could do a 1-SPDIF in and 3 or 4 AES/EBU out converter/DA circuit for $10 (connectors additional) using the circuit in the middle of Tomi's page... http://www.epanorama.net/documents/audio/spdif.html You could even use CAT5 connectors (cheaper than XLR) and avoid the adapters, etc. I could not do it for $10 when the cost of PCB manufacture, labour, maintainance and installation is added in at $50 per hour. In addition that would mean me taking tome off from more vital work, so it would be a double loss. -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |
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