[SI-LIST] Re: Multimeter or Oscilliscope

The advice you got is correct.  Good multimeters have much more 
resolution than scopes.  Just don't buy a junk one from the auto parts 
store.  Fluke, Agilent, and Keithley all make good instruments that are 
worth the price.  Benchtop 6 1/2 digit multimeters can routinely be had 
for about $1300 - $1700 depending on bells and whistles.  Multimeters 
use multi slope integration methods for self-calibration and 
measurement.  This has a natural tendency to filter out noise.

Steve
Han Li wrote:
> Hi, experts
> Maybe it isn't a suitable  question for si group. I want to measure a DC
> output precisely. Should I use a multimeter or a digital oscilliscope?
> I found there always are some minor voltage differences between these two
> equipments.
> I prefer a multimeter, for I think an oscilliscope is so sensitive that  it
> may capture a lot of noises which affect the result.
> But Someon told me using multimeter is because  the multimeter is much more
> accurate than oscilliscope's the vertical channel.
>
> On the other hand, most multimeters these days are digital ones which use an
> AD.Dose this means a multimeter would also be sensitive to noises and will
> capture them during test, resulting a less acurate value?
>
> Which one is better for DC output voltage measurement?
>
> Any thoughts are welcome.
> BTW: papers or weblinks are also OK.
>
>
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