I don't have a manual, nor schematic, for a 465 scope. So I can't make
any guesstimates as to what the "impedance" level is for the circuitry
associated with the high voltage point that you have measured. Also, I
don't know whether any neon bulbs should be lit, or not lit; although I
suspect that any neon lamps associated with the CRT are probably surge
suppression devices and should be unlit under normal operation and
circumstances- although neon lamps in amplifier circuits are a different
matter, as they might be for level shifting (and therefore will be
normally lit). Perhaps other Tekscopes group members can comment.
Mike N4MWP
On 04/12/2016 12:07 PM, w7qed@... [TekScopes] wrote:
Hi Mike,
Mine does indeed have the 5kv option (aerospace surplus is wonderful...).
Given that I have the same reading on both these meters, I think it is
safe to assume the cathode voltage is undesirably low. But I will
borrow a proper probe later this week from a friend and make sure.
What do you think the output impedance is of that circuit, and how
much current can it handle?
Also, should those neon bulbs be lighting up in the high voltage
section? They are not right now, thought I'd ask.
Thanks,
--E
[Non-text portions of this message have been removed]
Mike Dinolfo