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Random tube scope screenshot
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David Hess:

--- Quote from: TomKatt on February 14, 2023, 11:38:35 am ---Edit - re the OP... The 547 with the 4 channel 1A4 vertical (4 channels!) is pretty cool because you can view multiple timebases on 2 channels, almost like a true dual beam scope.  Nice!
--- End quote ---

The 4-bay 7000 mainframe oscilloscopes preserved that capability with a mode where one timebase is assigned to each vertical plug-in.
Alex Eisenhut:

--- Quote from: David Hess on February 15, 2023, 12:02:07 am ---
--- Quote from: TomKatt on February 14, 2023, 11:38:35 am ---Edit - re the OP... The 547 with the 4 channel 1A4 vertical (4 channels!) is pretty cool because you can view multiple timebases on 2 channels, almost like a true dual beam scope.  Nice!
--- End quote ---

The 4-bay 7000 mainframe oscilloscopes preserved that capability with a mode where one timebase is assigned to each vertical plug-in.

--- End quote ---

The 1A4 has something similar, there's a switch behind the plugin, it locks channels 1 and 2 to time base A of a 547 and 3 and 4 go to B.

Alex Eisenhut:

--- Quote from: basinstreetdesign on February 13, 2023, 04:28:39 am ---I have the same scope and a calibrated NTSC test-signal generator as well (Leitch CTG-210).  I sometimes make the same display just for old times sake.  But I do not have the 1A4 and wish I did.

--- End quote ---

Here's the junior edition:

https://www.ebay.ca/itm/175614472627

A bit dinged up and missing Nuvistors... but ...
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