Author Topic: USA calibration club (Read 141526 times)

bitseeker · « **Reply #625 on:** March 29, 2018, 09:10:04 pm »

Oh, yeah. I forgot you can get scanner cards for the 2000 and 2001. The 2700 can use two cards, but the card models are different than for 200x.

vindoline · « **Reply #626 on:** March 31, 2018, 01:44:56 pm »

Quote from: cellularmitosis on March 29, 2018, 06:39:56 pm

I know this club has been dormant for a while, but cool things should be coming pretty soon

Now I'm feeling the pressure to finish my various voltnut projects so I have something to compare!

Echo88 · « **Reply #627 on:** March 31, 2018, 02:34:28 pm »

@cellularmitosis: Please do a post about the remote-controlled-lab from TiN/ManateeMafia. Im curious how this works.

cellularmitosis · « **Reply #628 on:** March 31, 2018, 06:25:34 pm »

Quote from: vindoline on March 31, 2018, 01:44:56 pm

Quote from: cellularmitosis on March 29, 2018, 06:39:56 pm
I know this club has been dormant for a while, but cool things should be coming pretty soon

Now I'm feeling the pressure to finish my various voltnut projects so I have something to compare!

I keep running into similar thoughts. "Oh wait, I need to go back in time and age this thing for 3 months so that I can use it..."

cellularmitosis · « **Reply #629 on:** March 31, 2018, 06:32:53 pm »

Quote from: Echo88 on March 31, 2018, 02:34:28 pm

@cellularmitosis: Please do a post about the remote-controlled-lab from TiN/ManateeMafia. Im curious how this works.

Actually, I might have to turn the mic over to TiN and ManateeMafia! I was shown a few pictures in the xdevs chatroom, and it was briefly described, but I am a bit scant on details, and I am very curious!

What other sort of unobtanium gear do they have in that lab? How did MM and TiN come to this arrangement? Perhaps TiN wanted to take advantage of some foreign ebay deals, but didn't want to pay for overseas shipping, so MM agreed to host the equipment in exchange for being allow to occasionally crack the lid and breathe in some vintage metrology fumes?

I'm also curious about how good TiN's estimate of his uncertainties has gotten -- I think he paid $$$ to have fluke calibrate something directly one time, and I'd imagine that's about as good as it gets (surely they have a JJ on premises?).

And on how many continents does TiN have calibration history accumulating now???

hwj-d · « **Reply #630 on:** March 31, 2018, 06:39:05 pm »

I wish i could come in to your "USA" calibration club.

(have several px'es to throw in ...

)

cellularmitosis · « **Reply #631 on:** March 31, 2018, 06:55:47 pm »

Quote from: hwj-d on March 31, 2018, 06:39:05 pm

I wish i could come in to your "USA" calibration club.
(have several px'es to throw in ... )

I've shipped to Andreas and it wasn't that expensive. I say you are in

TiN · « **Reply #632 on:** March 31, 2018, 07:04:57 pm »

Quote

foreign ebay deals, but didn't want to pay for overseas shipping

That is not how it started, and never was a goal. But few deals might slipped thru eventually. MM just couldn't resist when I packed both of my K2002's, stash of KX LTZ REF's and showed up at the airport

. That's how it started, and now we help each other to dispose whatever cash available on more rusty broken equipment.

I'd prefer to have mic off, when not relevant

. In general picture, we do rotations for our volt and ohm standards on periodic term (with intervals longer than desired, after all this is just hobby). For what we do, there is near zero value of any single time calibration, no matter how good it is. Because you anchor internal lab calibrations to that standard, but are completely at the mercy of unknown drift rate. So need to have at least three calibrations in same conditions with good uncertainty to establish good confidence in transfers. This is our main goal since 2015 or so, using best standards we can get hands on to minimize chances of errors. And thousands of kilometers between us cost pretty penny too.

hwj-d · « **Reply #633 on:** March 31, 2018, 07:15:48 pm »

Quote from: cellularmitosis on March 31, 2018, 06:55:47 pm

Quote from: hwj-d on March 31, 2018, 06:39:05 pm
I wish i could come in to your "USA" calibration club.
(have several px'es to throw in ... )

I've shipped to Andreas and it wasn't that expensive. I say you are in

Yes, that would be very nice.

Seriously, I already have some offers from some nice forum participants for calibrating after burn in. After that, i would spend one to let go it around to the club, if that makes any sense. But Andreas (€: and others, of course) makes much better things than me for such a project.

kj7e · « **Reply #634 on:** April 04, 2018, 01:58:33 am »

Been in contact with a member here regarding a second pair of eyes on my 10v reference box. I've done all I can with it, time to send it off and have someone else measure and play with it some. Hope he will post his measurements here.

I may have gone a little overboard on the shipping container

bitseeker · « **Reply #635 on:** April 04, 2018, 02:53:15 am »

Wow, beautiful packing job! And that 3456 looks mighty nice.

cellularmitosis · « **Reply #636 on:** April 04, 2018, 08:40:53 am »

tres cool!

zhtoor · « **Reply #637 on:** April 04, 2018, 10:18:47 am »

planning on becoming a fluke competitor?

best regards.

-zia

TiN · « **Reply #638 on:** April 04, 2018, 10:22:25 am »

kj7e
It's amazing, considering that my hobby projects never get to this stage

.

Quote

time to send it off and have someone else measure and play with it some. Hope he will post his measurements here.

I wonder who would that be

.
This build definately deserves full review and testing.

IconicPCB · « **Reply #639 on:** April 04, 2018, 11:27:07 am »

Does the pushbike provide emergency power to the reference?

kj7e · « **Reply #640 on:** April 04, 2018, 02:29:07 pm »

Quote from: IconicPCB on April 04, 2018, 11:27:07 am

Does the pushbike provide emergency power to the reference?

Funny you mention that, I live in the mountains at elevation. We see ice and snow and only have one utility power line path to the homes up here. We loose power a few times a year, so I have my home office on a large UPS and two generators for the home. The push bike provides me with emergency power, Ill put it 50-100 miles with 4,000'-10,000' ele gain a week. I also have a Beta 300RR for more extreme enduro/trials riding (not quite as good as Tim Coleman).

hwj-d · « **Reply #641 on:** April 04, 2018, 03:35:40 pm »

Quote

I also have a Beta 300RR for more extreme enduro/trials riding (not quite as good as Tim Coleman).

OT
Supernice.

Have a Honda Transalp PD10 (Nickname: Transe) $:=\$

Zucca · « **Reply #642 on:** April 04, 2018, 09:16:31 pm »

A M A Z I N G , is it an SRAM Eagle 12 speed?

kj7e · « **Reply #643 on:** April 04, 2018, 09:22:02 pm »

Yes, with an oval 32 front.

kj7e · « **Reply #644 on:** April 06, 2018, 03:59:19 pm »

Teaser, I got word it arrived safely this morning, I was told this photo was taken after about 20 min of warm up...

TiN · « **Reply #645 on:** April 06, 2018, 06:00:21 pm »

Oi oi, it's -3ppm off

Thanks for update.
I wonder who is next in food chain for this awesome box

kj7e · « **Reply #646 on:** April 06, 2018, 06:12:13 pm »

I told him to keep it for a week or two and play with it. So it looks like my DMM7510 may be a few PPM off one of his 3458's, so which is right

TiN · « **Reply #647 on:** April 06, 2018, 06:27:00 pm »

Of course fancy blingy DMM7510. Never trust those rusty HP's out there

.

bitseeker · « **Reply #648 on:** April 07, 2018, 02:04:42 am »

You guys crack me up!

cellularmitosis · « **Reply #649 on:** April 10, 2018, 09:52:15 pm »

Quote from: cellularmitosis on March 29, 2018, 06:39:56 pm

Also, my hermetic resistors are on their way back from Andreas, after which I can send a set over to TiN to finish his cal club FX reference.

Hermetic resistors are en route to TiN!

$\$\Omega\$$ $\$\Omega\$$ $\$\Omega\$$


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Author Topic: USA calibration club (Read 141526 times)

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