I have a LynxTWO with an attached LS-ADAT card. Unfortunately, due to the poor mounting of the Toslink connector blocks on this card, one block has broken off and two others are loose. Only one block remains 'secure'. Although the board is designed to use two 'tags' as anchor pins - soldered to the PCB - such connector blocks have not been used here. This is strange considering the high end market Lynx Studio move in. Instead they have used the 'Solder and Glue' method - with the predicted result such as I am experiencing. With the need now to replace all four Toslink connectors I must source an outlet for them. I previously had to replace a PCB Mounted Toslink Connector Block in my Digital Audio Design 'Digital Audio Selector' 1U rack unit. The reason for change was simply that the live pins had corroded. Then I was fortunate in finding a pair of TORX176 on line. Does anyone know a source of these? Michael (UK) 
The part No. I am seeking is: OC-0803.
In the TORX176 there are 2 types: TX and RX. Are the OC-0803 designated in this way also or are they capable of both Transmit AND Receive? Anyone?
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Michael
In the TORX176 there are 2 types: TX and RX. Are the OC-0803 designated in this way also or are they capable of both Transmit AND Receive? Anyone?
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Michael
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Is there anything here,
Fibre Optic | CPC
(if the link doesn't work then search for SPDIF transmitters and click "fibre optic" in the list)
Fibre Optic | CPC
(if the link doesn't work then search for SPDIF transmitters and click "fibre optic" in the list)
Thanks, Mooly. I am contacting both CPC and Farnell about this. The only place I have had any response from is from XinXingl(HK)Co in Hong Kong. Web address: www.xxlelec.com I am also trying to get the answer to a fundamental question as to whether these blocks are able to both Transmit & Receive - or are they individually either Tx or Rx. The units are for replacing ones which have broken-in-Studio-use on a Lynx LS-ADAT card. It seems they're not strapped down but GLUED (!) in place - still having the appropriate solder connectors to the PCB of course. But the glue breaks down in time or just doesn't stand the hurly burly of Studio use. I have contacted Paul of Lynx Studios about this.
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Michael
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Michael
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I've never heard of combined transmit/receive units tbh but my experience with them is very limited. Perhaps deciphering the pinouts would give a clue. If such a combined device existed it would almost certainly have an extra pinout used as either as an extra input/output or as some mode change... I would guess anyway 🙂
Good luck with the search.
Good luck with the search.
Thanks again, Mooly. Neither have I heard of a combined IN/OUT Toslink connector - but one has to ask!! I find that both CPC and Farnell are one and the same. I seem to be getting some joy from an old supplier of mine though: Alibaba. It was Alibaba who supplied me with a pair of TORX179's a while back. So I am hopeful! Just out of interest for you, the PCB in question (for the Lynx LS-ADAT) DOES have the two anchoring solder holes, but these wretched OC-0803's don't have anchor pins - just plastic extension with screw hole for face-place mounting or THREE contacts (unlike the TORX179's which have four). But there's no room on a PC mounting plate for such a mounting screw. So I must contrive an anchor strap when I eventually get these. This still doesn't answer the question of a Technical Data sheet for them - which should answer all questions!
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Michael
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Michael
Yes, CPC was taken over by Farnell many years ago with Farnell concentrating on more the pure electronics side.
The TORX data sheets are available here, just enter the device number. I had no luck with the other parts though.
Datasheet catalog for integrated circuits, diodes, triacs, and other semiconductors, view
Hope you get it sorted.
The TORX data sheets are available here, just enter the device number. I had no luck with the other parts though.
Datasheet catalog for integrated circuits, diodes, triacs, and other semiconductors, view
Hope you get it sorted.
Thanks Mooly - the elusive OC-0803 is not there. I shall see what my contacts in Alababa have come up with.
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Michael
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Michael
My contacts at Alibaba have come up with some OC-0803 Optical PCB mounting connector blocks identical to the original and sent me four. Now, here's the rub - how to distinguish a TX block from a RX block. The only marks on these 'J.T.' made Optical blocks is on the top surface. The Alibaba merchant sent two blocks with 'M' on the top surface, one block with 'O' and one with 'N'. On the original Lynx LS-ADAT card the two TX blocks have an 'H' and an 'N' whereas the two RX blocks are marked 'A' and 'G'. Does anyone know how otherwise to distinguish a TX from an RX block??? Please??
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Michael (UK)
Who is this elusive manufacturer [J.T.] ? How does one contact them to get a Data Sheet of the OC-0803 ?
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Michael
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Michael
The 'elusive' manufacturer is: JyeTai Precision Industrial (M) Sdn Bhd., email: jtm@jyetai.com.my So I have emailed them asking for details on how to decipher 'gender' of this 'Optical Emission Connector' - the correct name!
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Michael
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Michael
How to deciper... well I would probably power one of the devices up and then scope its output (I'm assuming they are all physically identical, otherwise there wouldn't be a problem). You know the supply and ground from your PCB. Just connect a TOSLINK source to feed into the device and see if there is any output.
Or... thinking aloud with all this... just power them up and see which emit light. TOSLINK is usually highly visible red. If its a receiver then of course there is no light output.
Or... thinking aloud with all this... just power them up and see which emit light. TOSLINK is usually highly visible red. If its a receiver then of course there is no light output.
Thanks, Mooly
I managed to get a drawing of an OC-0803 - rather like those drawings of Transistors - complete with dimensions and sizes of pins and their distance from each other. It also gives the 'Bottom View' showing the three pins and what they're called: (1) = Vin (2) = Vcc and (3) = GND. This is for the Transmitter. But there's no help for Receiver, what their pin-out is or what the pins are called. But I get your point rather like a suck-it-and-see... Well! Why not! They (TX & RX) look identical. At least we now know what they're called: Optical Emission Connector (OEC)
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Michael
I would guess the pin outs are the same with respect to Vcc and ground. The other pin will be either the input (Vin) or an output(Vout!)
Hello Mooly. Thanks for your interest in my search! And in identifying the Optical Emission Connector as TX or RX. Here's a 'link' on which I found the Data Sheet (such as it is) for the OC-0803: JyeTai Precision Industrial (M) Sdn Bhd I hope it works for you!
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Michael
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Michael
No working link in your post 🙂
You say they are identical physically to what you removed. Just identify supply and ground on the PCB they came from and then power one of these replacements up. It should be straight forward to determine if its a Tx or Rx.
You say they are identical physically to what you removed. Just identify supply and ground on the PCB they came from and then power one of these replacements up. It should be straight forward to determine if its a Tx or Rx.
Thanks, Mooly. You are right I am sure in your surmise about the three contacts of these OEC's. I have removed the two remaining OEC's from the LS-ADAT card, cleaned up the PCB holes and found that of the three loose OEC's only one was salvable. The contacts were broken off too close to the OEC to be solderable. I have inserted and soldered the remaining one - being a TX OEC. I have also drilled up through the two OEC's from the PCB to allow for rigid anchoring of both. This I have done using 'jumper' wire soldered at both ends to the PCB. In order to test I shall lose contact with the Forum.
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Michael
Yes, Mooly, they are identical in all visible respects - except that LynxStudios cut off the black plastic anchor legs which are close to the pin-outs. Sorry the 'link' didn't work. Try copying this into yr Browser:
JyeTai Precision Industrial co
Now select 'Products' and hover the cursor next to the top blue blob and a red 'Jacks' will appear. Click on 'Optical Emission Contacts' and you'll get as much information as I was able to get. The pdf's can be down-loaded. There are several of them to inspect, but the oc-0803 only gives the 'Tranmit' type and its relevant pin-outs - as you'll see. Not very helpful. I am still hoping for an answer from: > jtm@jyetai.co.my < about their RX connector.
When I removed the three loose OEC's from the LS-ADAT PCB it was impossible to extract all the solder so with a high-speed very fine drill bit I drilled it out. I hope there aren't any filaments sandwiched inside it? - but I was extremely careful to keep in the middle!
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Michael
Maybe there is no receiver module available from that company. Looking at those pdf's it seems as though that could be the reason. The four you have been sent may just be different versions (like an IC with N or AN etc after its number) and that all are really the same, transmiters.
That's a thought, Mooly BUT!! Looking at the OEC's from the Lynx LS-ADAT they all look the same and all have OC-0803 in raised lettering under a Logo square containing [J.T.]. And since two of those are TX and two RX I think JyeTai produced both. They just don't admit it! (at least not on their 'Products' list. Strange. But I still hope to get a reply from them - and also from the Alibaba Trader from whom I received 4 (identical?) OEC's. They are also looking into this because I pointed out they come in pairs and would they verify the four they sent were indeed two pairs . . .
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Michael
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