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Hi all.
A test instrument has a monochrome CRT display, selects with cursors, its operation modes and displays data.
There is a control for brightness, and probably some internal trimmer for contrast. There is also a RGBIHV CGA jack for using an external color monitor.
What is likely the signal at the brightness or contrast controls wipers ? Could it be composite ? If so, I would like to tap there and feed video to a composite monitor instead of a RGB.
The intention is replacing its original CRT with a 7 inch LCD display, color or not. Suggestions are welcome.
( https://http2.mlstatic.com/monitor-...00-D_NQ_NP_914230-MLC26696623254_012018-F.jpg )
A test instrument has a monochrome CRT display, selects with cursors, its operation modes and displays data.
There is a control for brightness, and probably some internal trimmer for contrast. There is also a RGBIHV CGA jack for using an external color monitor.
What is likely the signal at the brightness or contrast controls wipers ? Could it be composite ? If so, I would like to tap there and feed video to a composite monitor instead of a RGB.
The intention is replacing its original CRT with a 7 inch LCD display, color or not. Suggestions are welcome.
( https://http2.mlstatic.com/monitor-...00-D_NQ_NP_914230-MLC26696623254_012018-F.jpg )