[sdiy] Trying to establish confidence in my test equipment

[Tom Arnold]

On Wed, Mar 08, 2006 at 10:59:33AM -0800, Chris Manders wrote:
> http://www.farnell.com/datasheets/23333.pdf
> 
> 5.000V and 10.000V exact references. I have the
> calibration details downloaded off the net for both
> the two meters I have. I could use these reference ICs
> to generate voltages to calibrate them!

+- .1% or, I believe +-5mv.

I think to be a usable reference it'd have to be a 5.0000 reference +- .01%
because then any error would be small enough as to be beyond what your ear
would notice.

The Analog Devices AD584 is .05% initial accuracy although they say on the
datasheet the 5.000v part is +-3mv max. ( AD584L )

National Appnote AN-161 ( using the LM199 ) and AN42 from Linear
Technologies ( several different chips used ) might be good starting points.

I'm trying to find some currently made high-accuracy voltage references just
from a curiousity standpoint.  HP doesnt seem to make the modules they used
to like I have, but I'm sure someone does.

And yes, when it comes to a reference standard, I am kinda anal retentive, I
do in fact own a Cesium clock too and not a pansy HP one but one of 10 my
dad built in the Army for testing relativity in the 1950s...
( I think its genetic )

-- 
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