I still have a TEK 475A (with the DMM4 on top) and a TEK 11043A
mainframe scope.
The 475A is rock solid and is one of the best analog triggering scopes
ever made. The 11403A goes all the way up to 3GHz but, tbh, is was a
difficult to use touch screen scope. I still use both of them occasionally.
I had a Sony Tektronix Battery Operated 10 or 20 MHz scope ( I can't
remember which) that was lent out never to be seen again. The nicest
thing about it was that the two channels were completely electrically
isolated from each other.
My go to scopes now are a couple of PicoScope USB scopes with logic
analyzers and arbitrary function generators.
Here are the two TEK scopes. The 475A is showing both a sine and a
square wave at 1 MHz (chopped). The 11403A is showing a 1GHz sine wave
and 7 other unconnected traces just to show that is can display 8 traces
at once. The three plugins on the 11403A are, 4 trace 3000MHz/trace, 2
trace 1GHz/trace and 2 trace 50MHz Current Probe Amplifier.
On 4/1/2024 5:56 PM, Fred Cisin via cctalk wrote:
On Mon, 1 Apr 2024, Just Kant via cctalk wrote:
I have more then I need. All the working ones are HP w/color crts,
and as far as older, verifiably vintage tools (right down to the
680x0 processor in either) I have to admit I favor them as a brand.
Call we an oddball, weird egg, badges I wear with pride.
But who could resist the allure of the newer ultra portable, even
handheld units (some with bandwidth or sampling rates to 50mhz). I'm
a big cheapo. But there's no real reason to agonize over a 65 - 200$
or thereabouts acquisition. It's a bit tiring to wade through the
piles of availability. I favor a desktop unit, larger screen (but not
always, careful). But most of those need wall current I think? The
convenience of a handheld battery powered unit obviously has it's
benefits.
I will always love and dote upon my color crt based HPs. But the
damned things are so heavy, so unwieldy. Judy-Jude knocked my 54111d
over, hit the paved floor, shook the house. And still works! Built to
withstand an atomic bombardment.
I had a Tektronix 512,
and an NLS215 (battery powered portable) from a company that switched
over to making Kaypros. I gave it away at one of the first VCFs.
I guess that the vintage ones are no longer adequate.
--
Grumpy Ol' Fred
