Hi,
I would like to build a (high qualiity) SPDIF to optical (ST connector) conversion board for a CD Drive.
Of course, it could also be TTL --> Optical ST conversion, because I can take the signal at the TTL level instead of picking it after the SPDIF output.
I am looking for a high quality Optical conversion, not a crappy one... The ST standard is obviously preferred to the Toslink one (my DAC is ST only).
I have found several schematics for Toslink --> SPDIF, but I cannot find a good one for SPDIF --> ST (or maybe to TOSLINK because it can probably be adapted to ST).
Do you know if such a conversion has already be done ?
Thank you !
I would like to build a (high qualiity) SPDIF to optical (ST connector) conversion board for a CD Drive.
Of course, it could also be TTL --> Optical ST conversion, because I can take the signal at the TTL level instead of picking it after the SPDIF output.
I am looking for a high quality Optical conversion, not a crappy one... The ST standard is obviously preferred to the Toslink one (my DAC is ST only).
I have found several schematics for Toslink --> SPDIF, but I cannot find a good one for SPDIF --> ST (or maybe to TOSLINK because it can probably be adapted to ST).
Do you know if such a conversion has already be done ?
Thank you !
You might find something of interest here. If you have a TTL point you can take the signal from then you could drive the LED directly.
SPDIF with Optical DIY transmitter and super clean drive.
SPDIF with Optical DIY transmitter and super clean drive.
Interesting topic !!
I try to build something a little bit different, let me explain:
All I need is an optical output using the ST format: not the Toslink format. (I do not need at all the RCA/BNC output).
But my poor knowledge in the optical output subject makes me unable to adapt your schematic for a ST output instead of Toslink output !! i will be able to build it, but unable to adapt it....
Can you give me some information on how to replace the Toslink emitter by a ST emitter (and maybe any other change to achieve this replacement) ?
Thank ou very much,
I try to build something a little bit different, let me explain:
All I need is an optical output using the ST format: not the Toslink format. (I do not need at all the RCA/BNC output).
But my poor knowledge in the optical output subject makes me unable to adapt your schematic for a ST output instead of Toslink output !! i will be able to build it, but unable to adapt it....
Can you give me some information on how to replace the Toslink emitter by a ST emitter (and maybe any other change to achieve this replacement) ?
Thank ou very much,
I've zero practical experience of the ST format I'm afraid but I was thinking you could have made something similar to my project by using perhaps an ST coupler or chassis mounted coupler/socket and mounting a suitable LED within it.
If you have the TTL output available then you wouldn't need the electronics, just the LED and associated components.
If you have the TTL output available then you wouldn't need the electronics, just the LED and associated components.
Have a look here. I have used this appl. note with success. ST is just the physical connector, not a special format. The only thing you have to be aware of is the wavelength of your receiver in the dac. It has to match the transmitters wavelength (it´s usually 700-800 nm)
http://www.efo.ru/components/avago/catalog/files/pdf/AV02-0176EN.pdf
http://www.efo.ru/components/avago/catalog/files/pdf/AV02-0176EN.pdf
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