: Friday, March 02, 2018 12:23 PM
To: volt-nuts@febo.com
Subject: Re: [volt-nuts] Precision high resistance measurements / calibration
of HP 4339B high-resistance meter.
Oops - I think I didn't send this message properly yesterday - here goes again.
Ed
Yes, David, unless you go to very ex
Oops - I think I didn't send this message properly yesterday - here goes
again. Ed
Yes, David, unless you go to very extreme measures, you won't see real R
values that have any practical meaning beyond E12 ohms or so. Most
practical insulation Rs may be around E12-E14 tops, unless you go to
s
On 2 March 2018 at 09:22, Andre wrote:
> Maybe one bad resistor? I've read that tin whiskering can occur even on
> relatively recent equipment, slower than lead free but still a problem.
> I'd do a visual inspection just to see, shouldn't be an issue.
> -A
>
An issue with fingerprints would not
r. David Kirkby
Sent: 02 March 2018 03:16:24
To: Discussion of precise voltage measurement
Subject: [volt-nuts] Precision high resistance measurements / calibration of HP
4339B high-resistance meter.
I pickup up an HP/Agilent (front says HP, rear says Agilent) 4339B
high-resistance meter from
I pickup up an HP/Agilent (front says HP, rear says Agilent) 4339B
high-resistance meter from eBay. The 4339B has an internal supply up to
1000 V, an ammeter to measure current, and obviously computes resistance
from Ohms Law. It is supposed to work up to 16 Peta ohms (1.6x10^16 ohms),
which would
