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Re: 7912AD Fails start-up self-test (perhaps)


 

On Tue, Jul 3, 2018 at 02:29 am, Adrian wrote:
/g/TekScopes/album?id=62098

As you can see from the pix, I just got the XY display running and while
the display is odd in that it seems to be 'seeing double' (PSU ripple
somewhere?) it is stable at least.
Another thought: the trace output on the X-Y display might also be correct, but as if the intensity is set high so you're seeing the edges of a trace which has bloomed to fill half the screen. Do those two dominant horizontal lines move if you adjust the vertical position? Do they get closer together if you turn the intensity down? That's what I'd expect.

Chris

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