Thanks for the advice! Unfortunately, my previous search attempts on Google, AppleFritter and this very site were unsuccessful 
I'm aware of the plethora of video standards around the DE-9 connector... that's why I won't try to connect anything until I'm certain enough about the particular pinout of this card... Not sure if hooking a scope on every pin would allow me to detect the signals, though.
The utilities I tried were:
•Monitors control panel = only one monitor shown, SE/30 internal video
•TechTool 1.2.1
•Newer Technology Gauge Series Slot Info 1.0a
In the disk was the control panel Sigma Designs PageView 3.7, but outside the system folder. Maybe it has to be active in order to show up... or maybe the video is halted without a monitor and thus not visible for the system.
Re: The NuBus Video Card AD Scan Dump... that's great! I do remember the SuperMac Spectrum 24 card ad. I can't see any Copyright date on the card, but the manufacture date is 9034.
Funny that none of the crystals' (dot clock?) frequencies match the usual Apple specs: as you can see in the pic, they are 56.66 (close, but not equal to that of the Portrait Display and the 16"), 62.955 and 69.251 MHz
I'm aware of the plethora of video standards around the DE-9 connector... that's why I won't try to connect anything until I'm certain enough about the particular pinout of this card... Not sure if hooking a scope on every pin would allow me to detect the signals, though.
The utilities I tried were:
•Monitors control panel = only one monitor shown, SE/30 internal video
•TechTool 1.2.1
•Newer Technology Gauge Series Slot Info 1.0a
In the disk was the control panel Sigma Designs PageView 3.7, but outside the system folder. Maybe it has to be active in order to show up... or maybe the video is halted without a monitor and thus not visible for the system.
Re: The NuBus Video Card AD Scan Dump... that's great! I do remember the SuperMac Spectrum 24 card ad. I can't see any Copyright date on the card, but the manufacture date is 9034.
Funny that none of the crystals' (dot clock?) frequencies match the usual Apple specs: as you can see in the pic, they are 56.66 (close, but not equal to that of the Portrait Display and the 16"), 62.955 and 69.251 MHz