With you so far. On the scope, D1 and D2 are horizontal. D3 and D4 are vertical. Each pair of connectors has a vertical connection, D1 up and down. D2 up and down. And so on. Makes sense with what you're saying.
BUT, the part that makes NO sense is that there is a jumper from the top of D2 (horizontal) to the bottom of D3 (vertical). Remove said jumper, though, and lose everything on screen.
I just need to make sure that it's not either missing one other jumper, or this one's not connected right. Good possibility that it's been monkeyed with....or perhaps not.
I'm trying to get the scope into X-Y mode. I've studied the manual, and I'm not completely certain how to set it up
