[volt-nuts] AC Voltage Measurement Standards

[Todd Micallef]

Ben,

Do you have the 4921 Current Shunt Adapter option for the 4920? I have not
found any information on it other than what is listed in the 4920 user's
handbook.
It mentions the unit simulates the impedance of a 540B. The guide says that
the instructions are included with the 4921. Do you happen to have a copy
of that document?

The 4920 user's guide is on the KO4BB website.

Thanks,

Todd


On Thu, Jul 10, 2014 at 5:17 AM, ben <ben at veritechmeasurements.com.au>
wrote:

> Hello,   For my 5cents worth, I also found Fluke 8506A's to be satisfactory
> - so long as they work. I only have one good remaining unit that does AC
> volts as well as DC.  I like the HP 3458A for AC volts, but always need to
> apply corrections for serious AC volts work.    A better solution I now use
> is the Datron 4920 units which are an order of magnitude more accurate than
> the 3458A across their full bandwidth. However, be aware of their input
> impedance and selection of cables - always use short coaxial. The 4920
> impedance is around 100k to 400kohm (mostly frequency dependant) and this
> also varies during its sampling period. Otherwise they are great units, in
> the same ball park as a Fluke 5790 but way cheaper.  For an AC source I
> thoroughly recommend the Datron 4200 or 4700 series, which are also way
> cheaper than the near equivalent Fluke 5700.
> Ben
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