On Mar 3, 9:30 am, MassiveProng
wrote:
On 2 Mar 2007 13:06:24 -0800, "David L. Jones"
Gave us:



On Mar 2, 7:32 pm, MassiveProng
wrote:
On 1 Mar 2007 23:53:14 -0800, "David L. Jones"
Gave us:

Hardly, it would be perfectly adequate for the job actually.

Wrong. That could easily leave the scope over 6% off.

It takes a much finer source to calibrate a device than the final
accuracy of the device being calibrated, dip****.

Not in this case.
If he used a meter with 0.5% accuracy on DC volts then he could check
and adjust his scope's vertical scale to the same 0.5% accuracy.

And if you start crapping on about the tolerance of the resistor chain
adding up etc, then you haven't thought about this one hard enough...

If you set a scope up with 0.5% accurate source validator, the scope
will NOT have that accuracy level. It will ONLY have that accuracy
level at that set point, and that is even questionable.

Which is why you do it for each range and then spot check it to see
that there is no funny business. Perfectly valid technique for home
calibration of a scope vertical scale.

Dave