Thanks to everyone who helped with calibration ideas.


Brendan
 

Finally finished my 485 I used a pg506 a afg3012 and a agilent 6634b for gain adjustments. This is as close as i could get. 1 ns at 20mV with the pg506 and 067-0681-01 TD pulser https://groups.io/g/TekScopes/photo/37195/13?p=Name,,,20,1,0,0 every adjustable capacitor on the vertical board for channel one needed replacing along with one in the main vertical transient response set.

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