User:Qfissler

From TekWiki
Jump to navigation Jump to search

I might not be entirely neurotypical...

...and I sometimes apologise.

Born in London & based near London, UK.

I studied electronics engineering and love it. I find that it gives me a low level view of what systems are doing in my work with computers.

...and I work with computers a lot. I'm currently lead eng on some large gov cloud infra.

Been using Tek scopes for many, many years as a hobbyist.

I own a couple of scopes not on this wiki.

My life has changed a little and I've had to refine my planning... I've acquired a lot of equipment and it's quite a burden to catalogue, triage/assess and then plan for actual preservation and restoration... I'm looking forward to giving my favourite hobby more focus in my life - even re-organising my house to support it more...


Tektronix Today

Things I'm working on

Testing plugins

English has a habit of tripping us up... Especially as we use a variety of regional dialects here. I intend to create plugins for testing the mainframes, their power rails and some minimal features. Hopefully, along the way, I'll also gather ideas and notes to create test rigs for testing and calibrating plugins...

Inspired by some excellent plugins from Tek, Jared@NFM and others, and the fact that probing the backplane with test gear is a Royal Pita, I've cobbled some notes and parts together and intend to build something to test Telequipment, 7000 series, 5000 series and TM500 series mainframes.

Octopus

I have a 7CT1N but like the idea of making some of our old scopes more useful by adding something like the octopus idea... At its simplest, the octopus can output X-Y to a scope. With storage, we can compare traces with known-good components. With programmable hardware, we can run complicated and automated tests.

Repairs

I love repairing electronics - it's been a hobby for many years. I find it therapeutic to restore things to working order, as well as rewarding to see something recovered from a path to landfill. It's a fond memory of mine to have been greeted by nephews and nieces with excitement and pleas to get me to repair things they'd liked to play with...

I've been buying Tek and Telequipment gear cheap to support sharing my enthusiasm with folk wanting to learn about electronics. Some of the items I've acquired need repair! Some might be rare enough that I need to plan the work to include pausing for photos or even good lighting and commentary for video...

I'll add a table here ASAP as I think that I'll need to solicit info and encourage discussion...

I opened up a barn find 7904 and am disappointed to find that it has a dummy board where the readout board should be ie, it has the dreaded Opt. 1... On the plus side, after a little cleaning, I found that the layers of guano seem to have protected the outside somewhat... I'm very pleased to find that a spare readout board I have from a 7603 was the same as used in the 7904

I also have a 7504 barn find in similar condition...

Notes for other users

Photos and scans to add

I have some items for which there are currently no photos on the wiki. If you need anything, don't hesitate to ask in the item discussion page - I'm sure that you'll get our attention and motivate us to prioritise taking photos. The only items I currently remember are summarised here.

Item Summary Notes
TDS2012B Photos USB version of TDS2012. I'm amazed how accurate it is for frequency readout. I need to take photos for the wiki
WFM601E Photos Very similar to the WFM601 outside and internally - the decoding board is the most different - I have one with a late rev main board.
WFM601i Photos
1240 Seminar Workbook 1240 Workbook front page
1200C01 Ops Manual and 1983 corrections C1/783
2465 Opt.10 Instrument Interfacing Guide 24 page guide for interfacing the 2445 and 2465 Option 10 - I didn't find it online so will scan and save it here soon.

Colours

Gianni's book mentions that he used RAL 7034 to paint 3D printed knobs... Online, it looks too yellow - but on Gianni's scope, the colour looks correct!

I intend to collate colour info here. I'd love to find some original documentation and extract colour info...

Plugin Interfaces

Not sure if these photos have a place on the main wiki - the 7000 series are a lot deeper and a fraction wider. The TM500, 5000 series and Telequipment plugins share the same chassis glide extrusions - but locations and widths of the glide keys and pins on the backs of the plugins prevent mishaps :-). The 11000 series is almost identical to the 7000 series but for the top optional connector which is shaped to prevent plugging into the wrong frame.

The TM500 and 5000 series interfaces are very similar to the JAMMA (Japanese Arcade Manufacture Marketing Association) but some connections are paired and some have a notch which removes a connection position.

Connector summary

The various mainframe and plugin interfaces have different pitches to keep us on our toes. While the Tektronix seem to be numbered from the bottom of the connector, the Telequipment are numbered from the top.

Attribute TM500 5000 7000/11000 Telequipment 3S
Pitch 5/32" 5/32" 0.1" 0.15" 5/32"
Positions 28 28 38 16 6
Sides 2 2 2 1 2
Connections <56 56 76 15 12
Thickness 16" 16" 16" <⅟16" ? 16" ?
Notes Some connections use multiple positions.
Multiple and optional key slots.
Some positions free for local use.
JAMMA is almost identical
5000 series is almost identical
Cards have two key slots
JAMMA is almost identical
TM500 is almost identical
- Numbered from the top.
Key slot uses a position
Vertical slot has barrier at position 12
Horizontal slot has barrier at position 5
-

A pivot of that table: (See note below)

Pitch Positions Sides Connections Thickness Notes
TM500 5/32" 28 2 <56 16" Some connections use multiple positions.
Multiple and optional key slots.
Some positions free for local use.
JAMMA is almost identical
5000 series is almost identical
5000 5/32" 28 2 56 16" Cards have two key slots
JAMMA is almost identical
TM500 is almost identical
7000/11000 0.1" 38 2 76 16" -
Telequipment 0.15" 16 1 15 <⅟16" ? Numbered from the top.
Key slot uses a position
Vertical slot has barrier at position 12
Horizontal slot has barrier at position 5
3S 5/32" 6 2 12 16" ? -

TelequipmenT Type 43

I've got a manual for the TelequipmenT Type 43 (D43/D.43/D.43R/S.43) which is from 1965, the one on this wiki is newer - I think that mine is from before Tektronix bought Telequipment. The one I've got has appendices for plugins D, G and H which are not in the 1968 printing. I see that there might be separate manuals for the plugins on the wiki - I've not checked all three but I see that my appendix for the H plugin has different content. All I've spotted so far is that the one on the wiki doesn't list all of the transistors (though the schematic shows the types) and is missing the two variable inductors, L21 and L22, which are listed as:

2.2/5.1μH Variable Inductor (Brown/Yellow)

I might add this to the H plugin page or its Discussion section.

Repair notes

Some notes for going to other pages when completed.

LiI cells

I have Lithium Iodide cells in a 1240 and its 12RS01 RAM pack. Stamped 1983 and still showing 2.75 V in circuit with some bulge... I think that cell will get its own page for linking from the various device pages which contain one.

Notes to me

Wiki editing

I need to remind myself to refer to the style guide for this wiki:

...and the Category Tree ...and Article Templates ...and a couple of extra handy references


Table Generator

Have a look at this link!

If you see a table you want to edit, copy the rendered table from a page viewed in your browser (ie drag to select&highlight, then copy with Ctrl-C or right-click, copy) and paste it into the editor ("File", "Paste table data...") - from there, you can transpose/pivot and transform the table!

Parts

I've got a few notes re parts refs and BOMs for various scopes - I want to collate and present them here eventually. I found a couple of useful sources and need to be able to find them when I want them... This wiki is perfect for that.

I have over 1800 parts refs, many with generic part refs for ordering. I'll not share them until I improve them (some conflicting info needs cleaning/refinement).

Screws

In the UK, UNF and UNC threads are relatively rare and expensive with metric being the norm.

for 2465 and 465 feet

Working with PDFs

Extracting Part Refs

I had fun extracting lists of references to the 151-0367-00 transistor from the 475 service manual.

Get the text from the manual

$ pdftotxt 475_SM.pdf 475_SM.txt

The tables are split but remarkably consistent so it's not too difficult to work back and pick up the previous column

$ grep -B12 151-0367 475_SM.txt

Grab the refs I want and paste them into a text editor, then turn new lines into comma space...

I'll come back to this - I intend to simplify extraction of parts lists and other info (eg Manual change appendices) from the manuals so we can have useful cross reference and more.

OCR

The upload tasks page recommends that we overwrite a PDF if we OCR it - then all existing links would continue to work. I think that we should share more info about good OCR methods as mine seemed to be less good than ones I download from this wiki. I'll share notes about what works for me...

`ocrmypdf` seems to work very well - the recognised text lines up with the image text - best results so far.

Can extract pages from a pdf

pdfimages --all infile.pdf infile-extracted    # the last argument there is the prefix for the output file names

Remove any duff pages, rotate any pages which are better rotated, then img2pdf and ocrmypdf and then rebuild the pdf

Create PDF for images

$ img2pdf *.jpeg  --output T940-letter-June-1983.pdf

Running OCR

$ ocrmypdf T940-letter-June-1983.pdf T940-letter-June-1983-OCR.pdf

Experimental pages

475 video links and components

Testing cleaner links to videos and discrete component lookups

User:Qfissler/475-parts-test-page

Formats for big lists of parts

Reminder to test these on mobile and various.

Fractions

I learned recently that the thickness of the 7000 series plugin PCBs (and presumably others) is ⅟16". There's no unicode symbol for that so I thought I'd try and take note of these options:

Testing various options for formatting fractions
Rendered From this markup
1/16" 1/16"
⅟16" ⅟16"
1/16" 1/<sub>16</sub>"
16" ⅟<sub>16</sub>"
7/16" <sup>7/</sup><sub>16"</sub>
7/16" <sup>7</sup>/<sub>16"</sub>
7/16" <sup>7</sup><sub>/16"</sub>
7/16" <sup>7</sup>/<sub>16</sub>"
7/16" <sup>7</sup>/<sub>16</sub><sup>"</sup>


Test table: Portable accessories

This table was extracted from an OCR of the 38W-5158 brochure.

Series Probes Active probes Current probes Misc
2400 Series
2445 P6131 P6201 P6021 016-0720-00 Protective cover, waterproof, Blue Vinyl
2465 P6202A P6022 010-6131-01 Probe Package (for channels 3 & 4)
A6302/AM 503 016-0691-00 Rackmount conversion kit
A6303/AM 503 016-0096-00 Rear support kit (for rackmounted inst.)
016-0180-00 Polarized Collapsible Viewing Hood
016-0592-00 Folding Viewing Hood, Light-shielding
016-0566-00 Collapsible Viewing Hood, Binocular
346-0058-00 Carrying Strap
2300 Series
2335 P6108 P6201 P6021 016-0468-00 2335 Rack Adaptor Kit
2336 P6122 P6202A P6022
2337 P6130 A6302/AM 503
A6303/AM 503
2200 Series
2213 P6122 P6201 P6021 020-0672-00 Front panel cover and accessory pouch
2215 P6121 (2236) P6202A P6022 200-2520-00 Front panel cover
2235 P6130 A6302/AM 503 016-0677-00 Accessory pouch
2236 A6303/AM 503 016-0566-00 Viewing Hood
346-0058-00 Carrying Strap
016-0566-00 Carrying Case
016-0466-00 Rack Adaptor Kit (2213/2215/2235)
016-0015-00 2236 Rack Adaptor Kit
035-0175-00 CRT TV Graticule
337-2775-02 CRT Light Filter (clear)
010-6602-00 2236 only: Tektronix P6602 Temp. Probe
400 Series
485 P6101 P6201 P6021 016-0274-00 Folding Viewing Hood
P6106 P6202 P6022 016-0082-00 Folding Viewing Hood
P6056 A6302/AM 503 1105 Battery Power Supply
P6057 A6303/AM 503 016-0554-00 Rain Cover
P6063B 016-0558-00 Rack Adaptor
P6015
P6009
P6048
P6130
468 P6101 P6201 P6021 016-0566-00 Viewing Hood (Binocular)
P6105 P6202 P6022 016-0180-00 Folding Polarized Viewing Hood
P6062B A6302/AM 503 1105 or 1106 Battery Power Supply
P6015 A6303/AM 503 378-0726-01 Mesh Filter
P6009 016-0675-00 Rack Adaptor (468)
P6048
P6130
465M P6101 P6201 P6021 016-0180-00 Folding Polarized Viewing Hood
UVSM 425 aka AN/USM425(V) P6104 P6202 P6022 378-0726-01 Mesh Filter
P6015 A6302/AM 503 1105 Battery Power Supply
P6009 A6303/AM 503 040-0825-01 Rack Adaptor
P6130
466 P6101 P6202 P6021 016-0180-00 Folding Polarized Viewing Hood
464 P6105 P6201 P6022 016-0566-00 Collapsible Viewing Hood (Binocular)
P6062B A6302/AM 503 016-0365-00 Protective Cover
P6015 A6303/AM 503 378-0726-01 Mesh Filter
P6009 1105 Battery Power Supply
P6130 016-0675-00 Rack Adaptor
434 P6101 P6021 016-0180-00 Folding Polarized Viewing Hood
P6108 P6022 378-0682-00 Mesh Filter
P6009 A6302/AM 503 1105 Battery Power Supply
P6015 A6303/AM 503 016-0272-00 Rack Adaptor
P6120
300 Series
314 P6101 P6021 016-0297-00 Viewing Hood
305 P6149A P6022 378-0063-00 Mesh Filter
335 A6302/AM 503 1105 Battery Power Supply
A6303/AM 503 016-0612-00 Rain Cover (314, 335)
200 Series
212 NA NA NA 015-0231-00 Alligator Clip Kit
213 013-0084-01 Probe Tip to BNC Panel Connector
214 013-0096-00 Probe Tip to BNC Cable Connector
221 161-0077-01 Power Cable Adaptor Assembly
010-0378-01 10X Attenuator Package
016-0199-01 Viewing Hood
346-0104-00 Carrying Strap
016-0512-00 Carrying Case
T900 Series
T912 P6101 P6021 016-0340-00 Protective Cover
P6108 P6022 016-0361-00 Dust/Rain Jacket
P6062B A6302/AM 503
P6015 A6303/AM 503
P6120
P6007
T922R P6101 P6021 016-0377-00 Viewing Hood
P6108 P6022
P6062B A6302/AM 503
P6015 A6303/AM 503
P6120
P6007