Silicon Graphics / IRIX 13W3 and Sync on Green (SoG) solutions

fraserN64

New member
Aug 20, 2019
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sites.google.com
I picked up a 13W3 to VGA cable with the DIP switches, and the image in OP is helpful but I'd like to clarify what to do with the switches that show ON and OFF? Does it not matter? In which case I've only got #6 switch set to ON and the other 11 set to OFF.
Can anyone take a photo of their working DIP settings for SGI SOG? Thanks.
 

Elf

Storybook
Feb 4, 2019
567
155
43
Removing the sync pins on the VGA side of a BNC to VGA adapter? I would think the easiest solution on a set of BNC to BNC cables, or a BNC to VGA adapter that has separate BNC cables for H/V sync would just be not to connect the H/V sync to anything if you don't want it.

If it's a BNC to VGA adapter that connects the Green channel to H/V sync internally, then removing the pins might help for some monitors?
 

indigofan

Member
Jun 8, 2020
50
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Removing the sync pins on the VGA side of a BNC to VGA adapter? I would think the easiest solution on a set of BNC to BNC cables, or a BNC to VGA adapter that has separate BNC cables for H/V sync would just be not to connect the H/V sync to anything if you don't want it.

If it's a BNC to VGA adapter that connects the Green channel to H/V sync internally, then removing the pins might help for some monitors?
I acquired a SUN BNC to 13w3 cable and want to get it to work on an SGI. The monitor has BNC connectors and is a SGI Monitor. I believe from reading that I can remove Pin 7 and it should work. The LCD panel that I have does not support SOG. So just trying to figure it out before I start popping off pins on the cable.
 
Last edited:

Elf

Storybook
Feb 4, 2019
567
155
43
Oh, I see! BNC to 13W3, but Sun configuration. I apologize, I am not sure what would work in that situation, or what would be different between Sun and SGI cables.
 

indigofan

Member
Jun 8, 2020
50
19
8
Oh, I see! BNC to 13W3, but Sun configuration. I apologize, I am not sure what would work in that situation, or what would be different between Sun and SGI cables.
It requires some surgery..

 
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