Dieter wrote:
[ stuff about the 13W3 connector as used by Sun, SGI, ... ]
This looks good. It is almost a standard -- it does support either
composite sync or separate H & V sync --
Don't forget sync-on-green (3 BNC)
Actually that would be a software issue. Well actually, the composite
vs. H & V sync can also be make a software issue.
and it is the type of connector that we need for a high quality
monitor.
Is the analog part of the DVI connector not good enough?
I don't know if it is good enough for a 0.5 GHz dot clock. This is
probably the limit for 75 ohm cables with BNC connectors (which are
rated at 1 GHz) so we need to look into it. I asked someone what the
VSWR at 500 MHz for the VGA connections (75 ohm) of a mated DVI plug and
jack was. It really needs to less than 1.2:1 or the answer is 'NO' it
isn't good enough for the HiRes head.
I presume that "Hydra" cables are already available for 5 BNC
monitors and other adapters as well. This is an important
consideration if we were to implement our own 'standard' we would
need cables.
So... you're suggesting a 13W3 connector in addition to the 2
dual-link DVI connectors?
Assuming this card goes into a standard PCI slot (as opposed to the
Ethernet/ USB/FW idea), where are all these connectors supposed to
go?
I have cards that have more functions than will fit and they have
headers for some of the functions and the connectors either go on a
dummy card panel or on the case somewhere. We were already discussing
connecting the connector to the board with mini-coax.
--
JRT
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