Re: 2215 avoiding future CRT damage

tom jobe <tomjobe@...>

Thank you Hakan!
That is an excellent test that will probably work on other scopes to get an idea if the CRT is good.
Your contributions to Tekscopes are always good, and usually you are the only one on the planet that has the information you post.
tom jobe...

On 7/6/2018 11:08 AM, zenith5106 wrote:
So my CRT / filament is cooked then, by now, after nearly 40 years of use...
oh well... not much I can do about it, but at least if I find the trace too
dim at fast sweep speeds (haven't checked specifically for that yet), I will
know why and won't waste trying to "fix"/troubleshoot something that just
can't be cured ! :-(
At the time we had a simple procedure at our Field Office to determine
if the CRT should be replaced or not. I don't recall if it was an official procedure
or something we came up locally. We set the T/B to the fastest sweep speed with
X10 Magnifier, Hold Off to max, Auto Trig and no input signal. If the trace could
be seen with Intensity set to max , even just quite dim, the CRT was considered OK.


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