First Light: IET HSVR + KVD = 05.000000V @ 18.5 Degrees C

[GEOelectronics]

With a temp. rating 0-50 C, 1ppm/C

22V input from regulated bench supply to an IET High Stability Voltage Reference module, or HSVR-6.3, specified at 6.2998V (ref. NIST). At first power-on it read 6.299995V then started settling down.

1.000000V and 5.000000V via a 10k Ohm Kelvin Varley Divider.

Measurements made with factory calibrated Keysight 34770A, auto-caled @ 18.5 C (stable) and set to 1G input.

HSVR has been sitting in its original packing and box for over a decade, never powered up until today.


George Dowell (Geo)

PICTURES LINK:

http://www.qsl.net/k/k0ff/VOLT_NUTS/IET_HSVR_6.3-FIRST%20_LIGHT/

[Vgkid]

So you bought it , I was eyeing it on epay.
Will we see a teardown?

[zhtoor]

you need VOLTAMYCIN 

welcome to volt-nut-land.

best regards.

-zia

[GEOelectronics]

"So you bought it , I was eyeing it on epay.
Will we see a teardown?"

Referring to the regulator?
No teardown but I did x-Ray it, not what I expected inside.

George Dowell

[zhtoor]

"So you bought it , I was eyeing it on epay.
Will we see a teardown?"

Referring to the regulator?
No teardown but I did x-Ray it, not what I expected inside.

George Dowell

can you share the x-ray images?

best regards.

-zia

[HighVoltage]

I watched this one on ebay as well.
Yes, it would be nice to see some xray pictures

Here is the datasheet from the IET website.

[zhtoor]

Hello George,

i am interested in how this unit is put together,
any schematics available by any chance? any date codes? year of manufacture?

best regards.

-zia

[GEOelectronics]

Hi Zia. No schematic, we'll be lucky to get them to tell about which technology is in there.
Yes I have all the other information and will be happy to share it with you privately but not for publication online.
Along with the normal documents came a certificate good for 15% off the first recalibration at IET.

With luck, next weekend we will have an AD2702SD to try. Both these devices squeeze good performance out of a non-oven protected reference and I wanted to investigate that type technology first.
George Dowell