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Main => Monitor/Video Forum => Topic started by: nipsmg on June 01, 2020, 09:14:21 am

Title: Neotec NT-2701 - P901 - RGB input signal pinout?
Post by: nipsmg on June 01, 2020, 09:14:21 am

I'm trying to figure out the pinout on a SF Rush so I can wire it to a GBS-8200 CGA/EGA/YUV -> VGA board.  The manual for Rush the Rock does not get into the pinouts of the wiring connectors.

It was connected to a NT-2701. 

On the NT-2701, the input signal plugs into a connector P901.  From right to left it looks like the pins go:

(https://i.imgur.com/3uAvELc.png)

VSYNC
HSYNC
Empty
Empty
BLUE
Empty
GREEN
Empty
RED

-----

However, the connector from the Rush the Rock board has 2 black wires in the 3rd and 4th pin (from the left).

(https://i.imgur.com/0OOrJlD.jpg)

I'm assuming these are ground?  They go back to the same pin on the Rush the Rock board. 

It would seem odd the NT-2701 would take a video signal without ground, but it's odd ground isn't called out on the connector.  I'm assuming the NT-2701 can take ground on those pins marked "empty".

Is it likely this is correct?  The GBS-8200 needs a ground for the input.

Thanks in advance for any help?

Title: Re: Neotec NT-2701 - P901 - RGB input signal pinout?
Post by: nipsmg on June 01, 2020, 10:12:14 am

Follow up - This appears to be correct, the black wires are ground.  After wiring up to the GBS-8200 I get a great picture.  Thanks.