10-08-2015, 07:06 PM
(10-08-2015, 06:30 PM)AlanBeckett Wrote: Apparently there's a Plugin which is good for 10uV/Cm but I haven't got one - http://w140.com/tekwiki/wiki/5A22N I bet that takes some driving.
Wow - 10uV is getting silly! Though I'm not surprised that such a thing exists - after all, Tek wouldn't have been happy with Telequipment having the V3 plugin going to 50uV/div. And nice to have the variable BW too. The V3 has a 2.5kHz mode - not sure why 2.5 particularly, but I find it extremely useful.
Anyway, apologies for the thread drift
Looking at the schematic, it looks as if it ought to respond pretty quickly to the Gate signal - there's nothing to slug it especially. I guess it'll be easy enough to compare Gate input to CRT grid if you can think of an easy (and safe!) way to lose the DC offset. Have you got a x100 probe with a suitable voltage rating? I think mine might only be 1kV...
All said, however, if the Gate signal is coming from a decently-low source impedance, then it's hard to see where the problem might be.
I'm sure you'll get there
