[Test-Equipment] rms voltmeter?

[J Forster]

There are a number of sine wave AC and AC/DC calibrators made by Fluke, HP, and
maybe ESI, Valhalla, and others. Try Google or the Tucker site. Many are
multi-dial units settable to 1.23456 Volts or whatever. They are not really
common outside of standards and calibration labs because they are of limited
use.

Tektronix makes square wave calibrators.

Best,
-John


Sandy wrote:

> Anyone know what sort of "standard" one usually uses to calibrate an "AC"
> indicating instrument?
>
> I don't know of any "voltage standard" that is available unless I've been
> overlooking somethng.
>
> It's much easier to find a DC voltage source that's accurate.  Where does
> one find an "accurate" (1% MAX or tighter)?
>
> 73,
> Sandy W5TVW