Re: tek 7xx4 series brightness dimming after power on


Hello Alberto: Wonderful to have these vintage scopes, in perfect operation and on the bench!

Just checked, my 7904 (NOT A) has no variation in intensity after turn on, and the 7104 microchannel intensifier has a ferocious beam intensity timeout/limiter, I believe the 7104 time out is inversely proportioned to beam current. The more modern 2467/B also have the timeout but in a more advanced implimentation.

Chuck and Dennis, any comments?


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