Mastodawn

Definitely riding the struggle bus trying to fix this #Tektronix 4907 power supply. A pretty simple linear supply that blows a fuse 33% of the times you turn it on.

Things it's not:

Any of the loads
The two saltshaker-sized bulk capacitors
The crowbar on the +5V rail

Find the schematic on page 208 of this PDF if you'd like to play along...

Bosco Feb 1

An update on the lab floor renovation. The flooring is finished, and the lighting is installed. The door and electrical outlets are still missing. I could start planning the lab benches.
Soon the air conditioning will be installed.
#agilent #keysight #hp #tektronix #rohdeschwarz

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Aaron Jan 14

Okay that worked, functional red power indicator now. But nothing on the serial port...

Let's fire up another old #Tektronix friend. RESET and CLOCK look good ... as does activity on the address lines. Doubled checked Minicom too.

There's clearly Stuff(tm) happening on the address lines so I think the Z80 is trying to boot.

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Aaron Jan 14

Haven't fired up this old friend in years. The +5 output on the power supply should be perfect to smoketest the RC2014. #tektronix

Mark J. Blair Jan 10

I’d like to learn enough about lens system design to make an adapter to use this square format Instax camera as a scope camera for my cute little Tektronix 310A. #instax #oscilloscope #camera #tektronix #tektronix310a

Paul Jan 10

With a working GPIB connection (thanks @vk2bea !), I'm able to read out the full error log from my Tektronix TDS754D.

ERROR: diagnostic test failure, digDataFormatDiag, ERROR!!BYTE mode, in demux 200 ,i= 7 memBaseAdr 0x7380010= data = 5600, expectedData[i] = 5500"
ibterm>errlog:next?

I'm suspecting (and hoping) this is a bad ram chip). I have a tenuous understanding of the whole system, but I'm only seeing capture errors on some sweep rates, and dependent on which / how many channels are active.
It's an utterly bad-ass instrument, and I'd love to get it back to 100%

#tektronix #oscilloscope #GPIB #linux

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Paul Jan 2

This shelf is a _little_ high, but I liked the idea of fitting a 500 series scope under it. We’ll see if that plan holds.
I have to restrain myself from putting too much more stuff on here before I fasten the shelves and possibly put a finish on them. The network analyzer in particular is _heavy_ but it’s probably the beefiest thing going up there, so I wanted to do a deflection test. Turns out 1/4” steel brackets are strong.
#electronics #tektronix #oscilloscope #retrotech #workshop

Joost Rekveld Dec 23

I am not buying oscilloscopes anymore but my only portable (luggable) scope recently died, so I got something a lot smaller but still vintage: this cute Sony/Tektronix 335, from 1976 I believe.

#Tektronix #analogelectronics #SystemsThatMatter

N-gated Hacker News Dec 1

Ah, the thrilling saga of an ancient, hulking #Tektronix beast that finally escaped the dusty to-do list dungeons! ⚔️ Apparently, someone thought it'd be a laugh to reanimate this #electronics fossil, only to realize lifting it requires more muscles than brains. 🏋️‍♂️💡 And as expected, this riveting #rescue #mission made it to... exactly zero comments. 🎉
https://justanotherelectronicsblog.com/?p=1429 #Escape #Vintage #Humor #HackerNews #ngated

A vector graphics workstation from the 70s - jaeblog

A bit of history and a repair of a Tektronix 4051 graphical computer from 1975. What was this computer's place in history, what was it used for and what parts exploded when turning it on.

jaeblog

GripNews Dec 1

🌘 七〇年代的向量繪圖工作站：Tektronix 4051 修復與解析
➤ 從積灰的儲存室到重現光芒的向量時代
✤ https://justanotherelectronicsblog.com/?p=1429
作者詳細記錄了修復一部塵封已久的 Tektronix 4051 向量繪圖工作站的過程。這款 1975 年問世的機器，雖然外觀陳舊，但作者透過逐步除錯，從更換故障開關、修復電源變壓器連接線，到校準高壓顯示電路，最終成功使其恢復運作。文中亦深入介紹了 Tektronix 的發展歷史，特別是其早期在示波器領域的貢獻，以及如何運用儲存式 CRT 技術開發出早期的圖形終端機與工作站。作者並探討了 4051 的硬體架構、記憶體擴充方式，以及其在顯示技術上的獨特性，並分享了修復後的體驗與相關的軟體資源。
+ 太厲害了！看到這臺老機器重獲新生，感覺就像穿越時空一樣。作者的修復過程條理清晰，連我這個非專業人士都看懂了，真是高手在民間！
+ 這篇文讓我對 Tektronix 這個品牌有了全新的認識，原來他們不只做示波器。405
#電子工程 #復古電腦 #電腦修復 #Tektronix #向量繪圖

A vector graphics workstation from the 70s - jaeblog

A bit of history and a repair of a Tektronix 4051 graphical computer from 1975. What was this computer's place in history, what was it used for and what parts exploded when turning it on.

jaeblog