Solartron 7081 - Mods & More for 8.5 Digit Voltmeter
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- Опубликовано: 28 июл 2024
- The first 500 people to use this link will get a 2 month free trial of Skillshare Premium Membership: skl.sh/marcoreps14
Alarm Clock & Bench DMM 🙄 bit.ly/2vGPV4y
DMMCheck Plus Reference www.welectron.com/DMMCheck-Pl...
TS100 with USB-PD aka Otter Iron: github.com/Jan--Henrik/Otter-...
Behind the scenes stuff sometimes: / marcoreps
Datron Milling Bits datronshop.de/
(used in this vid: 6mm 4in1 0068806A 20k RPM 700mm/min feed)
Resistor Encyclopedia by zlymex www.eevblog.com/forum/metrolo...
'KX' LTZ1000 Reference xdevs.com/article/kx-ref/
My LTZ1000 video • Ultra Precision Voltag...
Solartron 7081 Modding doc.xdevs.com/docs/SOLARTRON/...
In this video we are taking a closer look at a special precision voltmeter that was so far ahead of its time that it is still a powerful tool today. I am taking a few measurements of an LTZ1000A voltage reference to turn them into statistics. Then I am taking apart the Solartron Schlumberger 7081 bench top voltmeter to find opportunities for improvement. I am CNC machining a new front panel segment to fit Pomona 3770 low thermal EMF binding posts. Finally I am installing an ultra-precision LTZ1000A voltage reference, but the new components have to settle down before we can see any results. 
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"There we go, finally it's nice and ugly." - My mother, when I hit puberty.
i dont mean to be so off topic but does someone know a tool to log back into an instagram account??
I stupidly lost the login password. I would love any tricks you can give me
@Diego Trace I really appreciate your reply. I found the site through google and I'm in the hacking process atm.
Takes quite some time so I will reply here later with my results.
@Diego Trace it worked and I actually got access to my account again. I'm so happy:D
Thanks so much, you really help me out :D
@Trent Kamden You are welcome :D
I'm still stuck trying to get good at Arduino. But when I get a notification that Marco Reps has posted a new video, I sit and wait to be godsmacked at his brilliance. Imagine Marco And Dave Jones collaborating on building some over engineered contraption!!!
@misterfixit *gobsmacked
@@physicsguybrian ya. Realized that after i hit send.
Dave Jones is waaay too lazy to work on this stuff...
Love the Kreosan reference at 8:42
Believe that was thought emporium, not kreosan?
@@albertogregory9678 This one GWq6L94ImX8
Real WiFi Trap DIY💥 / Free Internet Rifle V 2.0 on Kreosan English channel
Gotta love that Clickspring call-out :)
I like the Vsauce call out better.
@@1800Supreme I think you might be right. I can't decide. At any rate, I wrote my comment before getting to. that point of the video.
Wonder if he already discovered the infamous Diresta...
Damn you Marco, I was happy with my 34401A and you have to show off this 8.5 digit ridiculousness...
Home brew anodize : LOTS of distilled water wash after every step. You also need to do a quick soak in sodium hydroxide as the first step to clean and do a minor etch before the acid anodize. It will also strip the ano off and you can try again.
Was about to sleep, but couldn't resist staying up another 17 minutes :D
me tooo
Well... Sleep tight. 😬
Same here
I wish I could give you a million likes for that joke hahahahahahaahahahah "it's full of chips and very accurate, so you might like it too" I'm still laughing hahahaha
Took me a bit to get it, that's very advanced.
Awww maannnn, I don't get it. Someone explain?
@@dreggory82 The device in the video has computer chips, and it is very accurate. A CNC machine has metal chips (shavings from the cutting) and it's a very accurate machine.
It's a joke aimed at a very narrow group of people lol
Superglue and ramen!? Lol I remember the guy, but just stop now haha.
I’m not gonna lie I learn almost nothing when watching your videos, but god damn you’re hilarious with that Patrick batemen style verbiage. I still watch them all you should consider more diy videos. Regardless great channel 🤙🏻
I feel similarly. Most of this stuff goes right over my head, but I really enjoy the dry humor and his general narration style.
The attention to detail and the build quality are quite impressive. Good video.
Just wanted to say I love your electronic repair videos just as much as I love your CNC and mechanical videos.
... not so casually plugs in USB-C TS100...
（ ﾟДﾟ）
ts80?
@@marc_frank Nope, TS100 with USB-PD mod I guess
He's mentioned it in a video before
I love this channel, because of it I'm aware how much I'm don't know yet
What sort of ground strap do I need to protect myself from the shocking puns??
For the weaker puns, a 10mm² wire stripped and wound around your neck is enough. For the strongest, a ground rod directly through your skull MAY be safe.
wow! What a project and what a great presentation!
Thanks for the ongoing 7081 content. I now wish I had bought the one from my old calibration lab when I left the company; probably could have got it for a song, since no one else understood how it worked (probably threw it in the garbage with a few months). Not that I'd have any practical use for it other than a piece of nostalgia furniture.
yesterday I was wondering why Marco reps didn't upload a new video yet. And here it is.
Wonderfull equipment. Excellent video !
For anodizing, you need to degrease the part really well and then place it in a mild sodium hydroxide solution before you put it in the electrolyzing bath. You also should position the part so that bubbles can't build up on any surfaces.
Interesting as always 👍
Thanks for sharing 👍😀
I almost shat myself when I saw the ramen & superglue.
Doing me some Reps. Gotta keep in ship shape!
Thank for uploading!
Gonna be tired tomorrow, but I need to watch it now
I admire your knowledge. 100% top-spec german knowledge.
You are easily one of my favorite RUclipsrs. If not THE... lol
Thumbs up for the Ramen-Hack! This was so deep youtuber humour, I guess almost nobody gets it.
I wanna see a crossover episode where Marco and the dude from AVE tear apart a CNC machine
I too have the madness that is precision measurement, although i'm in the very early stages (just a mild throat irritation), I just copied Dave Jones's microcurrent circuit and layed out a PCB myself, and armed with my 30 year old Fluke, a 3v battery and a 50m resistor made from 5 10m ebay specials, I delight in nanoamp precision with a dash of picoamps on the side.
When macro reps uploaded a video it is a good day!
A Marco Reps video released on my birthday! How lucky is that? ;-)
there are about 359 times as many subscribers as there are days is a year ;)
"...a fun little diversion."
Nurse, I need some more Zoloft!
😂
Whoa whoa, type C TS100?
I guess bedtime's a little late... :D
I would love to get my hands on that Fluke to fix, I already did a 5200A 19 part videos series!
An open pan full of sulfuric acid next to a super-accurate, hyper-expensive instrument PCB... hmm, what could go wrong? :D
Anything could, including things not involving any acid, such as the sky falling. The only question that actually matters though is, what did?
Damn now I have a volt meter deficiency .
Datron....the stuff dreams are made of!
"Gold and violet go goes together..." Lol, awesome!
Pretty interesting, dude!!! 😃
Wait, wait wait, wait, wait.... is that another TS100 with a PD chip? I just build some USB C PD - XT60 Adaptors for my kit (Wich also contains Lenovo Old to xt, barreljack to xt and 12V car adaptor to xt .... ohh and a xt to xt step up converter) Can you elaborate on that ?
The watch made me subscribe.
Pure Gold
I do not have any technical skills (this is why probably I watch the other ones doing technical stuff), but in this case (channel), I came for the storyline and for the jokes. Very cool jokes!!
13:14 nice touch ;) hey vsauce, Michael here
great job
Thanks for uploading the Solartron front panel file to Thingiverse. I may go this route with my 7081, but I need to quantify the Fischer setup first. A question about your 7081 front panel replacement: Did you solder the original input leads to the new binding posts or go the mechanical crimp route?
It would be cool to see another video on anodization if you have any parts in mind that would be suitable candidates
That directional sound got me fucked up in my dark bedroom
I've susbscirbed to this channel just to hear you say Skillshare.
Hey Marco maybe I'm a fool for asking but could you maybe make a video about these "exotic" or generally extremely good electronic parts? Greetings
Hmmh, the LTZ1000 will be more stable over long periods, but will it produce less noise than a 1N829 in shorter periods?
I had a motherboard with that type of cap on it, I thought they would all be going that way but the solid state caps they use now are different somehow, also this one literally called them military grade solid state (which I thought was just because solid state was new back then)
More Reps 😍🤩
Nice watch. Mine looks similar but doesn't specify the time in text.
At 0:30 you mention repairing a 7081 in 2018. Did you make a video of that? I can't find it on your youtube or Patreon site.
Why was the super cap that replaced the battery in the first video about the 7081 removed?
@marco reps Shouldn't those meters have an air gap of 8 or more inches in between each one since being stacked increased the temperature of the meters on the inside?
"but it's full of chips..."... nice one!!!
1:55 Not so calm and stable if you keep getting Hangouts notifications ...
Can you measure plant electrical response / nerves and smaller organisms such as worm nerves with this device similar to Jagadish Bose's brilliant work?
Actually that is a different Datron you are thinking of. They were a British company which was absorbed into Wavetek back in the early 90s.
I am sure he was joking and knows that very well. There seems to be a few different Datrons about. One does motor racing timing I seem to recall. I have a Datron 1081 on my bench as I recall. Will have to check as it could be a lesser model. Never been able to afford a 1281.
Any news about the 2001 oled replacement?
Clear housing TS-100 soldering iron!! 😱 What is this witchcraft?! Didn't see that option when I purchased mine from Amazon.
Banggood has TS100 shells. I think they're about 10 bucks.
@@Leif_YT awesome! Thank you 😁
you're impressed by the clear housing and not the USB C soldering capability of this TS 100! are you mad ?!
@@tenns not mad. I have one, just not with the clear housing. It's a fantastic iron. Especially when you supply it with 24V goodness. Oh that heat up time! 😁
What do you do with all the Aluminium Chips? Can you sell them or mold into something new?
Hey, how about cleaning the inside of the readout face plate?
I have to compliment you on your English.
Fluke 5700A?
Somebody is quite rich, i guess.
That thing sold for 6999$-best offer price, OMG
Nice new terminals, btw!
Still cheap, not even 10% of the modern replacement (5730A)
Do you have a video on your cnc build?
@4:14 what happened to your pace Soldering station?
Ima sign up for classes to learn how to scribble with a magic marker.
1:17
*high pitched voice* "oh i 'member !"
Funny!
Thanks
so your target audiences retired Engineersim sure the 155k viers really enjoy it :D
I have the same watch
yeah can you talk us through the type c on your TS100 please...please.
I love being told where my self esteem shoud be by a votmeter
WTF TS-100 with type C?
Sir i noticed from time lapse that the variance in humidity levels could be affecting some of your capacitant vowels... Just fyi.. carry on
I have a solartron but never used it due to the ridiculous cost of the front panel connector. Would like to copy your mod. I would prefer to 3d print as my cnc machine is still under construction.
I have no idea why youtube recommended me this channel and I have no idea what is going on but I want to learn more but I am so lost.
10µV StD renders 8 1/2 digits into 6 1/2 digit performance only. 3458A at NPLC 100, 16 samples, delivers about 200nV StD (~ 0.02ppm) instead, which includes already the stability/noise of the references measured, i.e. LTZ1000 based, or from 5442A calibrator.
Question is, if something heavily drifts inside your 7081, like pre-amps or +/- reference amplifier, or if the A/D has a principle flaw.
I assume all supply voltages and shielding has been measured to not be the root cause.
Noise for DCV is not specified at all, if I haven't overlooked something!?
hm with the super slow sample rate 7081 could probably be called NPLC 2600, but I didn't use the digital filter at all before ... might be worth testing? 16 samples?
PSUs were tested, but not up to voltnut standards ... I've seen some nice DIY power rail probes in the eevblos forum, which one should I build? zlymex?
nope, can't find an official DCV noise spec either
I just wrote down these numbers of the 3458A statistics as a comparison. In your case, you might record measurements to PC, at a faster rate, 7 1/2 dig, to visually analyse, if that high StD really comes from high noise, or instead from drift. In first case, you get a noisy, but constant baseline, in the other case a drifting baseline, which might show lesser noise.
The PSUs should only have low ripple and the correct voltages, as you mentioned that the capacitors were OK, and did not replace them. Nothing fancy volt-nutting about that. I just wondered about your comment in the video, that the 7081 is known to be noisy, or so.
You have not seen my tutorial on anodizing didn't you?
Fastest click of the day
Hi will you make 4s li ion 5200mah 14.8v bms balancer circuit for irobot roomba vacuum cleaner? Get auto cutter! Let me turn the battery off when fully charged. Now everyone is using these robots, everyone watches and benefits ...
So did it get better than 20ppm?
You are brilliantly hilarious
You should make a about how to buy old stuffs from eBay. Really
4:37 that discord noise....
How did you know that I'm a cnc fan
Yes me like chips and dip, i mean chips and currency, chips and accuracy i wanted to say. Hum this reminds of when the hungry man was ask: What is 2+2? He said 4 loafs.
Schlumberger is internally pronounced "schlumber jay." I know this because of an indoctrination session their reps presented in college. Fracking is very cool, very legal
What cad program is that?
Someone list all the referenced RUclips videos
Little specs of sulfuric acid everywhere... And a little bit of vapor traveling through the room into all those fancy devices...
More CNC videos please, anything with CNC in the title!!
Maybe I’m stupid but why would you need 8.5 digit precision? I think with 3 digits you are covered when tinkering around with electronics?
Are you a collector?
You normally don't but he has caught the dreaded "Volt Nut" disease and it's sort of like insulin for a diabetic to be PC. Once infected its also very easy to contract the "Time Nut" disease as well. Been there but currently in remission.
too many references here captain
What is about of the Time references