I'm surprised some digital scope manufacturer hasn't implemented X-Y-Z
control as an option. Driving X-Y was fairly common for certain types
of signals. And many also used the Z input.
Back in the day there were many companies that made X-Y or X-Y-Z displays.
On 4/3/2024 10:01 AM, Guy Fedorkow via cctalk wrote:
Vintage computer enthusiasts might want to keep track of where to find
CRT-based analog oscilloscopes, for use as output devices.
The early MIT and Lincoln Labs computers used D/A converters to steer
and activate the beam on analog scopes to draw vector images.
Working on Whirlwind simulation, we've been able to get this technique
to work with "real" oscilloscopes, e.g., Tek 475, but we have not yet
found a single DSO that has X/Y _and_ Z inputs (let alone the required
phosphor fade).
Myself, I have a couple scopes with backups, so I'm not in the
market for another one. But others might consider the option...
/guy fedorkow
Date: Mon, 01 Apr 2024 22:33:38 +0000
From: Just Kant<[email protected]>
Subject: [cctalk] oscilloscopes
To: "General Discussion: On-Topic and Off-Topic Posts"
<[email protected]>
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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.
