Yes, yes, I have read the sticky about searching the forum for questions like these
The issue is that for specific applications, the answers end up converging into different clusters and it takes a long time to search through all combinations of questions and answers...
At any rate, please bear with me, if you would.
I would like to purchase an instrument for two main purposes:
1) Analyze analog video signals, to diagnose issues with a machine that supposedly produces VGA VESA 640x480 output (~25MHz)
2) Analyze digital circuitry ahead of the DAC that produces said VGA output, and a variety of other digital busses that run at frequencies up to around 300MHz
I am vaguely aware of three main routes to achieve said results, and I would like to ask the experts here to weigh in on what makes the most sense (and bang for buck) with a budget of around $1500 (but I can be persuaded to spend some more if the advantage is substantial), or at least the pros and cons of each:
1) Old digital oscilloscope AND/OR logic analyzer, for example the Tek TLA714/715 (is it reasonable to analyze the VGA signal with a LA? perhaps with one analog and one digital board?)
2) New DSO/MSO from Rigol et al.
3) New PC-based combo of analog and digital scopes (are they fast enough?)
Thank you very much in advance!
Frio