25 May
2011
25 May
'11
9:15 a.m.
On 5/24/11 11:45 PM, Brent Hilpert wrote:
The P11 phosphor was available on the 7000 series crates and the 400 series (455,465,475)
portables as options. My 7844 has the pretty blue traces from the two-gun CRT as well as a
400 MHz backplane. I still make room and haul it out to make measurements requiring one of
the off-the-wall plug-ins with which Tek populated that line of scopes.
-> CRC
Of course,
just for vintage warm fuzzies, little can challenge an old
Tektronix scope. I recently acquired a Tek 561A from a friend locally.
Mmmm, vacuum tubes.... Turn on the scope, go get a beer while it warms
up, measure and test with confidence. -- Ian
Our radio museum here has several old 500-series tek scopes that I'd
love to refurbish and get working. There's a 4-channel plug-in in one of
them, too. Size, maintenance and fan noise might make them not-so-great
for regular use but it would be nice to be able to use them on occasion.
I loved the crispness of the trace and the blue tint of the phosphor in
the CRTs of that series. I wonder why Tek didn't continue using that
phosphor.