[SI-LIST] Re: Measuring Power supply Ripple and Noise

Jaiso,
soldering a coaxial cable directly to the board works very well. The
common-mode noise rejection is good. Set the 'scope to 50 ohms.

Power supply boards commonly have CM noise on them and this is a real
problem with single-ended X10 probes. An active differential probe can work
well.

   Dave Cuthbert

On Wed, Nov 12, 2008 at 11:46 PM, Jaison Fernandez
<jaisonf@xxxxxxxxxxxxxxx>wrote:

> Hai all,
> I am trying to characterize the power integrity of of a board (that having
> a
> system clock running at 400Mhz and DDR memory)
> What is the type of probe (Single ended or differential) is best suited for
> measuring power supply ripple and noise in the board.(I am using Tek GHz
> Oscilloscope for this purpose)
> Can any one give any document regarding measuring power integrity of a
> board.
>
>
>
>
> With Warm Regards,
>
> JAISON FERNANDEZ
>
>
>
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