Quote:
Originally Posted by old_tv_nut
The spec for 41.25 attenuation at C1 is 24 dB or greater, which means it's Ok if it's higher on the scope (closer to the top, which equals zero signal) than shown in the illustration.
At C2: a 1 dB reduction in signal from the peak is the same as a 20% [correction - 10%] reduction. So the distance shown as 1 dB in the illustration should be 20% [correction - 10%] of the max height. (the sketch looks poorly drawn - more like 10%.) [Correction - the sketch looks correct]You are getting over 30% attenuation at the markers, so this indicates the curve is too narrow.
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old_tv_nut, thank you for the ongoing advice and help. I will follow back up hopefully with an improved alignment. Two quick items, first I transposed labeling C1 and C2 against the last pictures I posted, I wont edit my earlier post as your reply align with what I originally had labeled. Second I have Ch1 and Ch2 set to DC. Here are my scope settings, if something seem incorrect please advise:
