Re: Used Analog vs New Digital Scope

[EMAIL PROTECTED] (Cyber Vagrant) wrote in 
news:[EMAIL PROTECTED]:

>> For durability, Tektronix 500 series can't be beat. Beautiful sharp
>> display as well, which makes the displays on many newer 'scopes appear
>> pitiful.
> 
> I read good things about the displays, although I read that cleaning
> the cams that do some kind a switching is a delicate operation that
> has to be periodically done.
> 

The cam switches are used on later,solid-state scopes like the 465,475 and 
7000 series plug-ins,not the 500 tube-type scopes.They used ordinary wafer 
switches,with silver-plated contacts.

The 500 series CRTs are at end-of-life status,a gamble that they'll be 
useable for any length of time.The switches will be wearing out,too.

-- 
Jim Yanik,NRA member
jyanik-at-kua.net