Chuck,
Thank you for your help!
First I did the power supply 10V and DAC adjustment (performed the checks as per the manual). Then did the time marks (I'll upload tomorrow the photos). But then between step 17 and 23 I have failed miserably with all my digital scopes (Tek DSO 3054, LeCroy 9410, Agilent) which couldn't perform the stroboscopic display (the holdoff is not short enough), so I could only superimpose the time marks on the bench scope for the slower frequencies (had to switch off all the fancy features but still can't achieve fast re-triggering). Tomorrow I'll take my very old Tek 7834 eating dust in the celler and will repeat the steps 17 to 23 again in CAL01. Otherwise it is much clear now. Even without correcly overlaying time marks on the bench scope this time the CAL01 have completed and when 2445 is booted I can see that the horizontal timing is accurate.
Also it seems like even the semi-automated calibration procedure is very labor intensive.
Thanks for clarifying how to deal with the overlays. Looks like I can even superimpose the time marks on the center of the screen within the specified accuracy (0.2 square for 2/10 or 1.2 square for 4/28). Seems like I shouldn't get rid of my 7000 series scopes (I just was about to do that) since till this evening I couldn't find the good use for them ;)
Maxim
