|
|
Post by MartinT on Jun 7, 2023 14:42:07 GMT
Still haven't quite got my head round this having read the thread again. Essentially, you're using a fibre cable to provide galvanic isolation and reduce noise. You can use a short ethernet cable from the router to a media adapter and another adapter at the streamer end, connected via a short ethernet cable to the streamer. In between is a length of fibre with plugs at either end, called an AOC (Active optical Cable). The two media adapters can be these, or similar: www.ebay.co.uk/itm/394541190313The fibre cable can be one of these: www.ebay.co.uk/itm/134595649651The fibre can do tremendously long runs (easily one end of a house to another, or to an annex at the bottom of the garden) and yet be impervious to noise. |
|
|
|
Post by Slinger on Jun 7, 2023 14:52:05 GMT
I've no immediate plans to switch over to fibre optic cable, but thought if would be a decent idea ...just in case.  It's a very good idea and an ethernet/fibre adapter at the other end, plus a cable, won't cost you very much when you're ready for it. Yes, I've had a quick scout around Amazon, and I'm looking at around £100-.00 for two 5m runs of OM3, 4 SFP modules, and a pair of converters, plus a couple of tiny RJ45 patch leads. In case you were wondering, I need one for the Pi, running Volumio, and one for the Audiolab 6000N. The Pi will be used exclusively to stream from my two NAS drives, and the 6000N will be for everything else network-related, e.g internet radio, Amazon Music, Spotify free, etc. |
|
|
|
Post by julesd68 on Jun 7, 2023 15:15:02 GMT
Still haven't quite got my head round this having read the thread again. Essentially, you're using a fibre cable to provide galvanic isolation and reduce noise. You can use a short ethernet cable from the router to a media adapter and another adapter at the streamer end, connected via a short ethernet cable to the streamer. In between is a length of fibre with plugs at either end, called an AOC (Active optical Cable). The two media adapters can be these, or similar: www.ebay.co.uk/itm/394541190313The fibre cable can be one of these: www.ebay.co.uk/itm/134595649651The fibre can do tremendously long runs (easily one end of a house to another, or to an annex at the bottom of the garden) and yet be impervious to noise. Thanks for the clarification Martin, I think I get it now. So I would just need to source a 10m run of optical cable - this is good as I won't need to grab my son's ethernet cable for streaming. What cat of ethernet cable is preferred? |
|
|
|
Post by MartinT on Jun 7, 2023 16:17:44 GMT
A 10m run of AOC cable (which includes SFP modules at either end) or 10m of fibre and matching SFPs, which is more complicated. An AOC guarantees that the SFPs and cable match as they are one item.
Cisco is pricy at long lengths but the Finisar is inexpensive.
I personally prefer Supra Cat8 but anything from Cat6 upwards will do.
|
|
|
|
Post by stellabagpuss on Jun 7, 2023 18:10:23 GMT
A 10m run of AOC cable (which includes SFP modules at either end) or 10m of fibre and matching SFPs, which is more complicated. An AOC guarantees that the SFPs and cable match as they are one item. Cisco is pricy at long lengths but the Finisar is inexpensive. I personally prefer Supra Cat8 but anything from Cat6 upwards will do. Very handy information Martin, so l presume you will need two fibre converters, cable is sorted to what ever length needed, and the SFP connectors are something that can be DIY and changed at a later date? |
|
|
|
Post by MartinT on Jun 7, 2023 18:57:46 GMT
Very handy information Martin, so l presume you will need two fibre converters, cable is sorted to what ever length needed, and the SFP connectors are something that can be DIY and changed at a later date? Yes, unless you happen to have a router with an SFP cage or a switch with one. For instance, my link is from EtherREGEN to Signature Rendu SE, both of which have cages so I don't need any media converters. You can certainly play with SFPs and fibre, which I did at first. If you buy an AOC then the SFPs and fibre are one, so guaranteed to work together. |
|
|
|
Post by assisi on Jun 8, 2023 13:27:47 GMT
A 10m run of AOC cable (which includes SFP modules at either end) or 10m of fibre and matching SFPs, which is more complicated. An AOC guarantees that the SFPs and cable match as they are one item. Cisco is pricy at long lengths but the Finisar is inexpensive. I personally prefer Supra Cat8 but anything from Cat6 upwards will do. Based upon your advice in this thread I have gone down the path of AOC cables. I have a 15mt Finisar connected between a Ubquiti Router and Sonore opticalModule which is connected RJ45 to a Waversa Wrouter. Then later in the chain I have a SoTM connected to a Melco via a 1mt Cisco genuine AOC. The two AOCs have been very beneficial. The Cisco is impressive.
Based upon my recent experience, if I was to consider replacing a switch it would have to have SFP connectivity.
In terms of Ethernet cables of which I have a few with 8 switches. The cables are Acoustic Revive with Telegartner plugs. The ground on the receiving end is not connected. I have not been overly impressed with Supra 8.
I have one only Vertere cable expensive which is the last cable into the ROON ready Weiss 502 DSP. If you want to try a serious cable, try a Vertere.
John
|
|
|
|
Post by stellabagpuss on Jun 8, 2023 13:41:49 GMT
|
|
|
|
Post by MartinT on Jun 8, 2023 14:03:02 GMT
Overly complex, an unknown quantity.
|
|
|
|
Post by MikeMusic on Jun 8, 2023 14:23:48 GMT
But ok apart from that ?  |
|
|
|
Post by stellabagpuss on Jun 8, 2023 14:37:53 GMT
Overly complex, an unknown quantity. That answers my question.... Thanks |
|
|
|
Post by Slinger on Jun 8, 2023 16:12:05 GMT
Overly complex, an unknown quantity. That answers my question.... Thanks I was tempted by the idea of a dual converter - one box. one power supply - as I'd be using two runs, but eventually decided I'd probably be best served by keeping each one completely isolated from the other. |
|
|
|
Post by MartinT on Jun 8, 2023 16:50:05 GMT
Yes, it's important that both ends of the optical link not be served by the same power supply as you will simply be bridging the isolation.
|
|
|
|
Post by stellabagpuss on Jun 8, 2023 17:09:58 GMT
Yes, it's important that both ends of the optical link not be served by the same power supply as you will simply be bridging the isolation. Perhaps a good tip to add to your Digital Noise Link |
|
|
|
Post by MartinT on Jun 8, 2023 18:28:16 GMT
Perhaps a good tip to add to your Digital Noise Link LOL, I had already included this advice. |
|
|
|
Post by stellabagpuss on Jun 8, 2023 20:19:08 GMT
Perhaps a good tip to add to your Digital Noise Link LOL, I had already included this advice. l meant recommendation on using that unit, and not the type that has multiple fibre outputs. |
|
|
|
Post by Slinger on Jun 8, 2023 21:44:48 GMT
Yes, it's important that both ends of the optical link not be served by the same power supply as you will simply be bridging the isolation. I settled on this in the end £49.99 the pair, with two SFP transceivers. All I needed on top was another pair of multimode transceivers, two runs of OM3, and a couple of 0,25m Cat8 patch cables. £97.09 the lot.  www.amazon.co.uk/gp/product/B08G48HT9P/ |
|
|
|
Post by brettj on Jun 8, 2023 22:57:11 GMT
|
|
|
|
Post by MartinT on Jun 9, 2023 5:07:11 GMT
Slinger I can't be certain but are those multimode SFPs? Make sure you match the fibre cable to them. brettj that looks like a superior solution, with clock options, too.
|
|
|
|
Post by brettj on Jun 9, 2023 6:32:49 GMT
Slinger I can't be certain but are those multimode SFPs? Make sure you match the fibre cable to them. brettj that looks like a superior solution, with clock options, too. Something then for 2014, the Teradak TS211. Hopefully no Jaguars in NZ to pounce on my 2960. |
|
