Author Topic: Fluke SL935 Resistance Standard project (rare prototype teardown included)  (Read 14329 times)

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Offline TiN

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Wonder what TEA got to greedy TiN this time? You guys will never guess, but many would surely want this!  :popcorn:



Hint, it made by Fluke, uses something from Fluke 732B, but it is no 732B.  ;)





Read the rest about SL935

EDIT 8 May 2017:

Livestream recording of SL935 cable connections fix and assembly in 732B-7001 chassis.



Schematics for resistor standard was recovered, and oven settings captured.

Initial data after reassembly with oven working revealed <0.5ppm difference to standalone measurement I made week ago.

« Last Edit: May 08, 2017, 02:26:57 PM by TiN »
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Online TheSteve

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Re: Magical package from hidden Fluke utopia lands.
« Reply #1 on: April 28, 2017, 02:42:05 PM »
I know! But I won't say...
VE7FM
 

Offline NANDBlog

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Re: Magical package from hidden Fluke utopia lands.
« Reply #2 on: April 28, 2017, 07:01:24 PM »
Something with a battery, powered all the time?
 

Offline Echo88

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Re: Magical package from hidden Fluke utopia lands.
« Reply #3 on: April 28, 2017, 07:03:17 PM »
You must have a very good position on Santas Naughty or Nice-List.
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #4 on: April 28, 2017, 09:02:08 PM »
Yes, battery, and supposed to be powered all the time. :)
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Offline Alex Nikitin

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Re: Magical package from hidden Fluke utopia lands.
« Reply #5 on: April 28, 2017, 09:25:45 PM »
Hmm... 5790B  :o ?

Cheers

Alex
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #6 on: April 28, 2017, 09:28:00 PM »
5790B don't have battery to power. :)
Actually the thing it rather small. It's only 30% of the package on the photo on the left side, rest is 5700A transformer assembly  :-/O
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Offline dr.diesel

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Re: Magical package from hidden Fluke utopia lands.
« Reply #7 on: April 28, 2017, 09:33:31 PM »
No idea, but I already want at least 3-4 of them. 
 
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Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #8 on: April 28, 2017, 10:25:09 PM »
I wouldn't mind few spares too.
Oh, did I mention it's black?
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Offline Kefka Palazzo

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Re: Magical package from hidden Fluke utopia lands.
« Reply #9 on: April 28, 2017, 11:13:43 PM »
Fluke 732a?
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #10 on: April 29, 2017, 12:00:12 AM »
You saw black Fluke 732A's? :) Last time I've checked those are beige white.
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Offline ManateeMafia

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Re: Magical package from hidden Fluke utopia lands.
« Reply #11 on: April 29, 2017, 12:18:44 AM »
“I know what this is. This is an espresso machine. No, no wait. It’s a snow cone maker. Is it a water heater?”
 

Offline nadona

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Re: Magical package from hidden Fluke utopia lands.
« Reply #12 on: April 29, 2017, 12:19:22 AM »
732B
Ha-ha-ha. That's good, too!
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #13 on: April 29, 2017, 12:21:22 AM »
It's not 732B, but it does have three digits in model number.  :-DMM
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Offline ManateeMafia

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Re: Magical package from hidden Fluke utopia lands.
« Reply #14 on: April 29, 2017, 12:23:50 AM »
Something made by a competent artisan?  :popcorn:
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #15 on: April 29, 2017, 12:26:05 AM »
I've heard so. Surely parts used came right from some serious gray beard-designed gear. 
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Offline Jeroen3

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Re: Magical package from hidden Fluke utopia lands.
« Reply #16 on: April 29, 2017, 12:28:10 AM »
792?

Else why even make us?
Quote
You guys will never guess
« Last Edit: April 29, 2017, 12:29:51 AM by Jeroen3 »
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #17 on: April 29, 2017, 12:33:30 AM »
Nope, 792A is about twice as large than this, even without battery block.

And I've already posted about 792A, so that cat is out...

I'm just curious who is hardcore enough precision-nut to know about this thing, as I discovered it just few weeks ago. Was enough for me to start throwing cash at seller though.  :palm:
« Last Edit: April 29, 2017, 12:35:32 AM by TiN »
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Offline Jeroen3

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Re: Magical package from hidden Fluke utopia lands.
« Reply #18 on: April 29, 2017, 12:42:12 AM »
It's either long EOL or my google skills are in poor shape today. I'm not a precision-nut either.
But my last guess is an 752. It has no battery though.

Nothing else really fits the shape that is in catalog today. And you don't have pictures of it on your website.
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #19 on: April 29, 2017, 12:45:34 AM »
752A not black either.

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Offline SvanGool

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Re: Magical package from hidden Fluke utopia lands.
« Reply #20 on: April 29, 2017, 01:20:50 AM »
Fluke 731B  :-/O
# Don't hurry, the past will wait. #
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #21 on: April 29, 2017, 01:31:39 AM »
Hm, it's sorta black. But no, I have no interest in 731's, sorry. :P
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Offline Jeroen3

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Re: Magical package from hidden Fluke utopia lands.
« Reply #22 on: April 29, 2017, 01:37:11 AM »
Did you buy a temperature reference?
 

Offline HighVoltage

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Re: Magical package from hidden Fluke utopia lands.
« Reply #23 on: April 29, 2017, 01:38:37 AM »
It's not 732B, but it does have three digits in model number.  :-DMM
May be 4 x 732B to make a 734A full rack?
There are 3 kinds of people in this world, those who can count and those who can not.
 

Offline TiN

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Re: Magical package from hidden Fluke utopia lands.
« Reply #24 on: April 29, 2017, 01:47:19 AM »
Left 732B is not in the sequence.

No, it's not one 732B, not two 732B, not any amount of 732B's :)
Well, maybe it's 30% of 732B, but anyhow it doesn't have this model number.
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