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Old 08-29-2013, 12:38 PM
TinCanAlley's Avatar
TinCanAlley TinCanAlley is offline
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Join Date: Sep 2008
Location: So Cal, CA
Posts: 1,010
How do these waveforms look

I am still learning how to use this vintage scope, but I think with the new probe I'm getting there. Attached are two waveforms I got off the horizontal and vertical blanking test point (their connected base to collector). The 7875 waveform has some misc lines in it. I don't know if they're supposed to be there or not (scan of waveform from SM isn't very clear). The other wave from looks close except for spacing. I'm sure I haven't gotten the exact setup of the scope correct, but it's working much better with the new 10x probe I got.

Anyway, let me know what you think. Next step is to find the next test point in the horizontal circuit. I really need to get rid of these jail bars.
Attached Images
File Type: jpg Blanking Waveforms.jpg (146.4 KB, 16 views)
File Type: jpg Latest Video Blanking Small (2).jpg (50.8 KB, 28 views)
File Type: jpg Latest Video Blanking Small (4).jpg (44.6 KB, 25 views)
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