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2465B trace and readout focus at different positions of focus knob


Mark Hatch
 

Hi,

Have a late model 2465B. Noticed today that the focus point for the readout is at one point on the focus knob. But it I also want to get an optimal focus for the trace, I need to turn the knob to a different position.

I guessing that I should first perform the 2465B CRT Adjustments (Grid Bias, High Drive Focus, and Edge Focus). Is this the right path here?

Focus knob is more or less in the center position when Readout is in focus and only a little off center with trace in focus.

Thanks

Mark


Chuck Harris
 

Yes, that is where the compromise that makes both
focus at about the same point happens.

Unfortunately, it is a compromise adjustment. The
readout is considered the designated loser in this
race.

-Chuck Harris

Mark Hatch wrote:

Hi,

Have a late model 2465B. Noticed today that the focus point for the readout is at one point on the focus knob. But it I also want to get an optimal focus for the trace, I need to turn the knob to a different position.

I guessing that I should first perform the 2465B CRT Adjustments (Grid Bias, High Drive Focus, and Edge Focus). Is this the right path here?

Focus knob is more or less in the center position when Readout is in focus and only a little off center with trace in focus.

Thanks

Mark






Mark Hatch
 

Thanks! I remember several years ago replacing the u400 hybrid because I had a distorted video (see https://www.youtube.com/watch?v=KGj_ssJxkEA&;t=42s ), but I suspect I never ran through the calibration procedures fully after that.

Regards,

Mark