Author Topic: EEVblog #559 - Auction Score  (Read 51893 times)

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Offline free_electron

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EEVblog #559 - Auction Score
« on: December 21, 2013, 04:30:34 pm »
Tek never made multimeters. They are escort designs
The Tc chip is an old Teledyne design. Microshit borged that when they acquired the semiconductor division from vishay. It included telefunken, teledyne and i believe a division of harris.

Teledyne was a big competitor for intersil a/d multimeter chips. The teledynes are really good chips

The fluke scopemeter was designed by philips of the netherlands. They sold their T&M group to fluke in early 90'

You can fix the tds220s like missing button and broken cal outputs with
Arts from the redtagged one. They use a stupid 7404 as buffer for cal output. The redtagged out of cal is unrepairable as the reference has gone off. It sits inside the big national semiconductor asic and that is unobtainium.

The tds3000 series : get the latest software from tek (if you cant grab it, i have it) you need 4 floppy disks. It updates to latest firmware and unlocks all options so you dont need those plugin modules. Tek released all options for free in the latest release firmware when they discontinued that series,

The three channel one probably has the center pin broken off the hybrid. Ive seen dat before. The mechanical construction is a bit flimsy on those.
To open the machine: look at the handle left and right. The round pivot point: pop the disk off. There is a black and white block in there. Look carefully for a little metal pin. It looks like a little rivet. Using nippers ( pliers cant grab it) pull that pin out. Its about 2 cm long.
Then take the black and white plastic block and rotate it 1/4turn(hold handle steady). The bloack can now be removed.

The handle will now be off. Remove 3 screw in back (one around power plug, two on gpib module) and lift case off.

Pop the metal lid off the analog inputs (you need to remove fan assembly. 2 cables and 2 screws.)

Take a look at the center pin of the bnc . It connects using a tabto the maxtek hybrid. Most likely sheared off there.


Opening the tds 220: take the handle , put it vertical, now pull the two vertical pieces outward. Thes removes the handle. There are two hidden screws under there.
There is a screw in battery compartment too i believe.
Pull out the power button ( you risk breaking off the switch if you dont do this) then remove back panel. Easy peasy
« Last Edit: December 21, 2013, 04:57:10 pm by free_electron »
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Offline WattSekunde

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Re: EEVblog #559 - Auction Score
« Reply #1 on: December 21, 2013, 05:03:54 pm »
 :o :o :o :o :o :o :o :o :o

Congratulations Dave! Awesome heap of gear. There are a lot of tds3054 from Australia an USA on ebay from 2k to 5k. Unbelievable.

I am very envious!  :-\
 

Offline mikeselectricstuff

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Re: EEVblog #559 - Auction Score
« Reply #2 on: December 21, 2013, 06:27:02 pm »
..so what did you pay for it all?

I've seen stuff like that go for near-retail at some non-online auctions, and mega-bargains are rare on anything that looks remotely valuable - the real bargains are often in the "weeds" of boxes of random oddments.
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Offline Legit-Design

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Re: EEVblog #559 - Auction Score
« Reply #3 on: December 21, 2013, 06:31:04 pm »
This video is unlisted. Only those with a link can see it. To watch my eevblog episodes I go directly to youtube. Also my phone alerts when something I like has been released on youtube.
 

Offline trackman44

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Re: EEVblog #559 - Auction Score
« Reply #4 on: December 21, 2013, 06:49:36 pm »
I hope Dave can give away some of those Tek DMMs. Would love to own one. Great catch by the way :D

Will
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Offline pickle9000

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Re: EEVblog #559 - Auction Score
« Reply #5 on: December 21, 2013, 06:53:45 pm »
I have a DMM916 (purchased new) and use it as my regular meter, it has fantastic function selections a fast meter to set. The biggest fail is the backlight.

 

Offline max-bit

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Re: EEVblog #559 - Auction Score
« Reply #6 on: December 21, 2013, 07:12:29 pm »
I join up for questions Mike
How much you paid for the items, or for all?
 

alm

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Re: EEVblog #559 - Auction Score
« Reply #7 on: December 21, 2013, 07:42:02 pm »
Tek never made multimeters. They are escort designs
Including the TX3/TX5 meters? They may have been produced by Escort, but I thought they were actually designed by Tek. Didn't Fluke at some point sue Tektronix and eventually buy the Tek DMM business, at which point the TX3/TX5 became the 183/185?

The fluke scopemeter was designed by philips of the netherlands. They sold their T&M group to fluke in early 90'
Sold just for the Scopemeters I believe. Didn't Fluke discontinue most of the Philips bench instruments within a couple of years or so?

The tds3000 series : get the latest software from tek (if you cant grab it, i have it) you need 4 floppy disks. It updates to latest firmware and unlocks all options so you dont need those plugin modules. Tek released all options for free in the latest release firmware when they discontinued that series,
Nope, they only enabled the advanced triggering, FFT and part of the TDS3VID option (the video triggering, not the waveform monitor and other features), but not the other options like limit testing, telecom masks and advanced analysis (the latter is nice, it enables statistics on measurements and some other neat features). It's trivial to hack the option modules (they're just I2C EEPROMs with the option as text string), however. Someone even posted a string (something like TDS3ENG) that when put in the EEPROM enabled all of the options.
 

Offline Jay_Diddy_B

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Re: EEVblog #559 - Auction Score
« Reply #8 on: December 21, 2013, 07:44:13 pm »
Hi,

The Tektronix DM870 is particularly interesting. In around 1996 Fluke sued Tektronix because the DM870 looked too similar to the Fluke 80 series meter. (Kind of like Apple versus Samsung).

As part of the settlement Tektronix agreed not use a yellow holster and they changed the number from DM870, too close to 87. That is the reason why the other Tektronix DMMs are blue.

Here is a reference that I found:


EVERETT, Wash., April 28 /PRNewswire/ -- Fluke Corporation (NYSE

: FLK) announced today that the trade dress infringement lawsuit it filed against Tektronix, Inc. (NYSE: TEK) on June 21, 1996, in Federal District Court in Seattle has been concluded with the entry of a final order.

 On August 16, 1996, the district court in Seattle preliminarily enjoined Tektronix from selling and advertising its 800 Series digital multimeters (DMMs) in the United States. On April 24, 1997, the district court entered a final order permanently enjoining Tektronix from marketing and selling their 800 Series DMMs and 510 and 520 digital thermometers (DTMs). The permanent injunction was entered after Fluke and Tektronix reached an agreement that Tektronix, without admitting liability, would stop selling and advertising dark DMMs, DTMs and other handheld, portable electronic test tools with significant digital multimeter functionality, having yellow holsters or borders around the perimeter of the products. The scope of the agreement is worldwide and applies to present and future products sold by Tektronix.

 "We are pleased with this result," said Bill Parzybok, Fluke chairman and chief executive officer. "We will continue to take legal action whenever necessary to protect Fluke's trade identity symbols from unlawful infringement so that customers may continue to rely on them as source indicators of high quality Fluke products."

 Fluke's mission is to be the leader in compact, professional electronic test tools. Fluke's products are used by technicians and engineers in installation, maintenance, service, manufacturing test and quality functions in a variety of industries throughout the world. Fluke, founded in 1948, has approximately 2,500 employees worldwide and distributes its products in over 100 countries. The company's worldwide headquarters are in Everett, Washington, USA, with European sales and service headquarters located in Eindhoven, The Netherlands.

SOURCE Fluke Corp.





Now both companies are now owned by Danaher.


Note to Dave: Do not add a yellow holster to uCurrent  :P

Jay_Diddy_B
 

Online Hydrawerk

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Re: EEVblog #559 - Auction Score
« Reply #9 on: December 21, 2013, 08:26:41 pm »

Wow, how much dit it cost??  :-+ :-+
Amazing machines. https://www.youtube.com/user/denha (It is not me...)
 

Offline lewis

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Re: EEVblog #559 - Auction Score
« Reply #10 on: December 21, 2013, 08:39:13 pm »
You lucky bugger! I bet you paid sod all for that lot....

That wobbly BNC is a dry joint on the ground, wouldn't necessarily show up as a dodgy waveform using the probe compensation output. I had the same problem, very very simple fix.

There seems to be two kinds of auction: 1) everything sells for more than you can buy it new because everyone knows what it is, and 2) everything sells for pence (or cents) because no-one knows what it is.

Did I mention you're a lucky bugger?
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Offline Legit-Design

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Re: EEVblog #559 - Auction Score
« Reply #11 on: December 21, 2013, 08:45:27 pm »
Looks like Dave is testing how many views/whatever the video gets if he doesn't fully publish it on youtube. He posted this on eevblog.com and on twitter. Why run away from a goose that lays golden eggs?
 

Offline jancumps

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Re: EEVblog #559 - Auction Score
« Reply #12 on: December 21, 2013, 09:02:43 pm »
That may be because it's a scheduled video release?
 

Offline BBQ

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Re: EEVblog #559 - Auction Score
« Reply #13 on: December 21, 2013, 09:18:21 pm »
Nice, i guess it counts as tax refund.  :-+
 

Offline nathanpc

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Re: EEVblog #559 - Auction Score
« Reply #14 on: December 21, 2013, 09:35:12 pm »
Christmas arrived earlier for Dave. :)
 

Offline EEVblog

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Re: EEVblog #559 - Auction Score
« Reply #15 on: December 21, 2013, 09:40:57 pm »
You lucky bugger! I bet you paid sod all for that lot....

No, I paid a lot for it, more than you think, it was a risk. But low enough for me to make a decent profit on it all.
 

Offline EEVblog

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Re: EEVblog #559 - Auction Score
« Reply #16 on: December 21, 2013, 09:42:26 pm »
This video is unlisted. Only those with a link can see it. To watch my eevblog episodes I go directly to youtube. Also my phone alerts when something I like has been released on youtube.

I released it on my blog site first before Youtube, it's something I'm trialing.
 

Offline EEVblog

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Re: EEVblog #559 - Auction Score
« Reply #17 on: December 21, 2013, 09:43:32 pm »
Tek never made multimeters. They are escort designs

Thought so, that was going to be my guess.
Thanks for the tips.
 

Offline Len

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Re: EEVblog #559 - Auction Score
« Reply #18 on: December 21, 2013, 09:46:31 pm »
I released it on my blog site first before Youtube, it's something I'm trialing.
Why? Are too many people watching your videos??
 

Offline EEVblog

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Re: EEVblog #559 - Auction Score
« Reply #19 on: December 21, 2013, 09:49:02 pm »
Why? Are too many people watching your videos??

Because the blog website is where the majority of my ad revenue comes from, so I need to provide an incentive for people to visit it more regularly. At present I'm not doing that, which is rather foolish.
 

Offline nitro2k01

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Re: EEVblog #559 - Auction Score
« Reply #20 on: December 21, 2013, 09:59:55 pm »
I noticed a few dangling traces in that multimeter. I saw similar ones on the bottom side as well, which I confirmed go down to the ground terminal. Which I'm guessing makes them shielding traces. (If they were guard traces proper, I guess they would have been exposed.)

Another curious thing is the CPU frequency, 3.579545 MHz. This value is otherwise used as the NTSC colorburst frequency. I guess they've chosen that frequency because the crystals were available dime a dozen at the time, because I can't think of another practical reason to use that particular frequency in a non-video related producted.

"Gold" in the menu probably refers to the color of the silkscreened text, which they thought sounded "better" (ie wankier) than just shift. Or it was a character limitation on the smaller digit display. And maybe the units were binned exactly because the backlight had failed.
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline volodimirk

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Re: EEVblog #559 - Auction Score
« Reply #21 on: December 21, 2013, 10:16:58 pm »
 Oh , what a view...

i have just got into electronics, though i have been a passive viever of Dave for a year+ already...

I have repaired my dad`s faulty cheap $5 chinese voltmeter - and here i am with my old "made-in-USSR" 25W soldering iron frying my fist PCBs

doubt i can afford myself such a multimeter , but please let me know somehow if any of these will be going on sale.
especially osciloscopes....
tey are GORGEOUS!!!!

Greetings form Ukraine

Vladimir
« Last Edit: December 21, 2013, 10:18:52 pm by volodimirk »
 

Offline JoannaK

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Re: EEVblog #559 - Auction Score
« Reply #22 on: December 21, 2013, 10:30:15 pm »
TDS220 obsolete? .. good grief.. I have 20Mhz 1 channel russian cro..   :rant:
 

Online dr.diesel

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Re: EEVblog #559 - Auction Score
« Reply #23 on: December 21, 2013, 10:34:24 pm »
TDS220 obsolete?

Obsolete yes, but still very useful.  I still use my TDS210 all the time over my Rigol 4000 series.  Like Dave said, no fan, completely silent, a pleasure to use when appropriate!


Offline taiteki

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Re: EEVblog #559 - Auction Score
« Reply #24 on: December 21, 2013, 10:50:21 pm »
awesome, the simpson 260 are in really very good conditions.  :clap:
 


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