Main > Monitor/Video Forum
How to use SCART for our hobby
Steve248:
Hi,
My motovation for this post is I have just a new ArcadeVGA http://www.ultimarc.com/avgainf.html card and do not want to blow it up!
I bought a Sony Trinitron 27" TV (KV-29X5D) recently and want to connect it to the Ultimarc ArcadeVGA card and have read all of this thread but also got some advice from Andy at Ultimarc who suggested this post: http://homepage.ntlworld.com/callum.henderson/basement_boomera_000007.htm
I have followed the instructions on the website above as much as I can but could really do with some help to make sure I am doing everything correctly. I have attached an image from that link (I hope that is ok).
VGA 5 (Ground) > Scart Isolated (I have no idea what this means?)
VGA 10 > Scart Isolated (Once again, I do not know what this means.)
VGA Shield > Scart 21 (Shell / Ground) (Does this mean join the casing on both the Scart lead to the VGA casing?)
Above are the main questions I have. Can someone help me to understand what I am supposed to do with these?
Secondly, am I doing the right thing using this configuration fo ArcadeVGA with a Sony KV-29X5D?
Any help and advice would be greatly appreciated before I do something really stupid :-\
Many thanks in advance...
joecontra:
Maybe you should use an other schematic.
I attached the one I use.
Regards,
joecontra
Steve248:
Thank you, I will try.
This is so odd, this was a really active thread and now totally dead. This is really useful stuff.
Zebidee:
I try to monitor the thread, but don't have the same time anymore sinc doing back to full time work. Last month has been really busy as well.
However, most of these wiring questions have all be asked and answered before on this thread.
Steve, I find that schematic your first put up too confusing. The one joe contra posted is a better guide. However, you don't need to worry about the transistors and resistors on the sync line if you are using an arcadevga card or any ATI card. nVIDIA cards can also be used, so long as you make sure they are outputting on negative sync for both horz and vertical. in fact, any card will work so long as it is outputting on double negative.
However, you will need the 100ohm resistor on the wire going into SCART pin 16. also note that unless you have an arcadevga or some other ATIcard, you won't get 5v from VGA pin 9. A surer way to build your cable is with external 5v power source from an internal PC power connector.
Many tvs will work if you just put a wire bridge between Scart pins 16 and 20, which is a heck of a lot simpler and definitely worth a try.
joecontra:
Steve248
Thank you, I will try.
This is so odd, this was a really active thread and now totally dead. This is really useful stuff.
I'm here now, I keep eye on topic. :)
Zebidee
unless you have an arcadevga or some other ATIcard, you won't get 5v from VGA pin 9
I'm using NVIDIA card, and it provides +5V from pin 9.
you will need the 100ohm resistor on the wire going into SCART pin 16
It's in the diagram. :)
make sure they are outputting on negative sync for both horz and vertical
I saw some cases where the card didn't give negative sync, and it didn't let change this option.
With my card there is no problem with that.
But if the card provides only positive snyc signals there's also a solution, this one:
This is a sync merger circuit which is independent from the polarity of the incoming sync signals. On the output it gives only negative C-Sync.
To build this circuit is not that hard as it seems. I attached an image of it including an EEPROM chip.
Regards,
joecontra