Author Topic: PTB at the Maker Faire in Hannover  (Read 3991 times)

0 Members and 1 Guest are viewing this topic.

Offline Echo88

  • Regular Contributor
  • *
  • Posts: 227
  • Country: de
Re: PTB at the Maker Faire in Hannover
« Reply #25 on: August 27, 2017, 06:49:12 AM »
JJA?  :scared:
 

Offline tggzzz

  • Super Contributor
  • ***
  • Posts: 5919
  • Country: gb
    • Having fun doing more, with less
Re: PTB at the Maker Faire in Hannover
« Reply #26 on: August 27, 2017, 02:58:09 PM »
Photos or never happen'd.  :-DMM

Yeah :(

I was going to take my camera but it wouldn't have easily fitted in my handbaggage. Really.

Shame, because I would have liked to take some photos of their equipment (etc, he said tantalisingly), and other things at the Faire.
There are lies, damned lies, statistics - and ADC/DAC specs.
Gliding aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Online TheSteve

  • Supporter
  • ****
  • Posts: 2154
  • Country: ca
  • GHz or bust
Re: PTB at the Maker Faire in Hannover
« Reply #27 on: August 27, 2017, 04:55:22 PM »
Photos or never happen'd.  :-DMM

Yeah :(

I was going to take my camera but it wouldn't have easily fitted in my handbaggage. Really.

Shame, because I would have liked to take some photos of their equipment (etc, he said tantalisingly), and other things at the Faire.

No camera in your phone?
VE7FM
 
The following users thanked this post: bck

Offline tggzzz

  • Super Contributor
  • ***
  • Posts: 5919
  • Country: gb
    • Having fun doing more, with less
Re: PTB at the Maker Faire in Hannover
« Reply #28 on: August 28, 2017, 03:30:48 AM »
Photos or never happen'd.  :-DMM

Yeah :(

I was going to take my camera but it wouldn't have easily fitted in my handbaggage. Really.

Shame, because I would have liked to take some photos of their equipment (etc, he said tantalisingly), and other things at the Faire.

No camera in your phone?

Certainly not. A camera in a phone; what will they think of next! It does, however do SMS (but not MMS, obviously).
There are lies, damned lies, statistics - and ADC/DAC specs.
Gliding aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline try

  • Contributor
  • Posts: 39
Re: PTB at the Maker Faire in Hannover
« Reply #29 on: August 28, 2017, 05:57:59 AM »
Hi ttggzzz,

it was a pleasure meeting you! The reaction of the other users clearly show that they missed the event except for e61_phil that I met the day after. Kind of sad as people are alreading setting up calibration clubs trying to reduce uncertainty but not joining the opportunity to do so at the fair. What a pity!

Did you know that the multimeter that measured your Transcell 10V reference was calibrated the day before?  8)
There is not too much uncertainty left about it. I hope it does not drift alot.

I am too tired now to provide metrology porn pictures as we continued calibrating at home after the fair closed and I still have a cold. Maybe another time?  ^-^

Did you pass Hannover customs without any hassle or did they ask you to disconnect the battery inside for security reasons?   :rant:
« Last Edit: August 28, 2017, 06:04:45 AM by try »
 

Offline tggzzz

  • Super Contributor
  • ***
  • Posts: 5919
  • Country: gb
    • Having fun doing more, with less
Re: PTB at the Maker Faire in Hannover
« Reply #30 on: August 28, 2017, 07:00:30 AM »
Did you pass Hannover customs without any hassle or did they ask you to disconnect the battery inside for security reasons?   :rant:

Absolutely no problem whatsoever in either direction, carrying everything as hand baggage :) I suspect it helped that I needed 4 trays for the x-ray, two for the usual bags/clothing and two for electronic equipment including a small multimeter with leads. There was a long queue, and they probably guessed I would have been delighted to discuss things with them :)

Plus I'm old and I probably look more silly that threatening :)

I'm now stuck at Heathrow waiting for the coach, and I will be interested to see if the voltage is the same when I get home. Could x-rays shift anything?

Please pass on my thanks to your colleague that showed me the Tek 6R1; I missed saying goodbye.
« Last Edit: August 28, 2017, 07:02:29 AM by tggzzz »
There are lies, damned lies, statistics - and ADC/DAC specs.
Gliding aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline try

  • Contributor
  • Posts: 39
Re: PTB at the Maker Faire in Hannover
« Reply #31 on: August 28, 2017, 03:59:26 PM »
Did you pass Hannover customs without any hassle or did they ask you to disconnect the battery inside for security reasons?   :rant:

Absolutely no problem whatsoever in either direction, carrying everything as hand baggage :) I suspect it helped that I needed 4 trays for the x-ray, two for the usual bags/clothing and two for electronic equipment including a small multimeter with leads. There was a long queue, and they probably guessed I would have been delighted to discuss things with them :)

Plus I'm old and I probably look more silly that threatening :)
I'd say you are a friendly and polite voltage extremist. ;)
Quote

I'm now stuck at Heathrow waiting for the coach, and I will be interested to see if the voltage is the same when I get home. Could x-rays shift anything?

I guess so because I remember reading about robot breakdowns in Fukushima. But I honestly have no clue regarding the effects of little doses. You will have to return next year and extend the analysis of voltage references in terms of temperature, humidity and pressure to radiation.  8)

Quote
Please pass on my thanks to your colleague that showed me the Tek 6R1; I missed saying goodbye.

Well, I'm just a visitor at the fair. Will let you know nevertheless because I took a note of somebody's email address from the booth aside named "Wellenkino" (wave cinema) with all the beautiful old Tektronix oscilloscopes.

A little hint for other readers regarding the metrology porn not yet disclosed:

Balls of steel are not the best ones.
 

Offline TiN

  • Super Contributor
  • ***
  • Posts: 2942
  • Country: tw
  • Volt-bolt
    • xDevs.com
Re: PTB at the Maker Faire in Hannover
« Reply #32 on: August 28, 2017, 09:06:00 PM »
Sure, ball of pure silicon is much better :) Right next to watt balance  :=\ .
xDevs.com | Have test gear documentation to share? Upload here! No size limits, firmware dumps and teardown photos welcome.
 

Offline lowimpedance

  • Frequent Contributor
  • **
  • Posts: 824
  • Country: au
  • Watts in an ohm?
Re: PTB at the Maker Faire in Hannover
« Reply #33 on: August 28, 2017, 09:30:00 PM »
Sure, ball of pure silicon is much better :) Right next to watt balance  :=\ .
LOL. ................. any one else wanna Avogadro at this one too.. :P
You call that current ?.......
I'll show you current !
 the odd multimeter or 2 or 3 or 4...or........never mind
 

Offline Henrik_V

  • Contributor
  • Posts: 32
  • Country: de
  • “ground” is a convenient fantasy
Re: PTB at the Maker Faire in Hannover
« Reply #34 on: August 28, 2017, 10:39:58 PM »
We had a Si- Ball at the Faire :)   No fake, one of the first series (pure Si28 and Si29) , mono cristal, about 1kg , and pretty close to a perfect ball. I'm still impressed that I was allowed to bring it there regarding the price tag ... something between 'priceless' and ???

And we actually had a JJA, a Quatum-Hall-standard  and a JAWS (a JJA AWG) there too, naked without bottle.

« Last Edit: August 28, 2017, 10:42:53 PM by Henrik_V »
Greetings from Germany
Henrik

The number you have dialed is imaginary, please turn your phone 90° and dial again!
 
The following users thanked this post: TiN, Twoflower, 2N3055

Offline Echo88

  • Regular Contributor
  • *
  • Posts: 227
  • Country: de
Re: PTB at the Maker Faire in Hannover
« Reply #35 on: August 28, 2017, 11:34:09 PM »
Since you mention the Si-ball and remind me of the picture from the PTB-website where the temperature of it is measured by a thermocouple: Do you by any chance know Mr. Dietmar Drung? Please ask him if he maybe has a spare pdf of detailed schematics of his superior chopper amplifier.  ;D
 

Offline Twoflower

  • Regular Contributor
  • *
  • Posts: 226
  • Country: de
Re: PTB at the Maker Faire in Hannover
« Reply #36 on: August 29, 2017, 05:20:20 AM »
Yes I was really surprised to see one of these round Si balls. Thank you for the nice chat on the first day, giving some interesting insights of your work.

And I really hope that I can be there if you do a "Tag der offenen Tür" event.

By the way here's a picture of the precious gem.
 

Offline lowimpedance

  • Frequent Contributor
  • **
  • Posts: 824
  • Country: au
  • Watts in an ohm?
Re: PTB at the Maker Faire in Hannover
« Reply #37 on: August 29, 2017, 11:00:29 AM »
Interesting transport container ! , some one at PTB is now wondering what happened to his drawer handle :D. (clearly standards lab issue  ;) ).
Nice 'ball' BTW. and this is what metrology nuts love to see.... nice pictures of very expensive shiny artifacts...    :-+

You call that current ?.......
I'll show you current !
 the odd multimeter or 2 or 3 or 4...or........never mind
 

Offline Henrik_V

  • Contributor
  • Posts: 32
  • Country: de
  • “ground” is a convenient fantasy
Re: PTB at the Maker Faire in Hannover
« Reply #38 on: August 29, 2017, 05:02:26 PM »
Interesting transport container ! , some one at PTB is now wondering what happened to his drawer handle :D. (clearly standards lab issue  ;) ).
Nice 'ball' BTW. and this is what metrology nuts love to see.... nice pictures of very expensive shiny artifacts...    :-+
Well, IKEA isn't that far away  ;)

We are Makers too, we make units  8)

Pictures are nice, but gageheads thrill .. see it with own eyes .... nealy touch it .. (just two layers of (plexi)glas inbetween)    ;D
Greetings from Germany
Henrik

The number you have dialed is imaginary, please turn your phone 90° and dial again!
 

Offline doktor pyta

  • Regular Contributor
  • *
  • Posts: 163
  • Country: pl
    • RF Scientific
Re: PTB at the Maker Faire in Hannover
« Reply #39 on: August 31, 2017, 05:06:44 AM »
Marco Reps prepared a video:


 
The following users thanked this post: Andreas, kj7e, zhtoor


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf