FreeLists / si-list / [SI-LIST] Re: Low Load Probe Suggestions

["Mark Randol" <Mark.Randol@xxxxxxxxxx>]

I know about the Agilent and Tek probes, and yes to update to the latest
and greatest I need to do a little homework.  However...

Mostly I'm wondering if any of you have run across other vendors out
there making interesting probe products.

--
Mark Randol, RF Evaluation & Application Engineer
ON Semiconductor
901 S. Mopac Expressway
Barton Oaks 4, Suite 343
Austin, TX 78746
512-329-5640 (voice), 512-329-8151 (FAX)
=20
=20

> -----Original Message-----
> From: olaney@xxxxxxxx [mailto:olaney@xxxxxxxx]=20
> Sent: Wednesday, September 12, 2007 1:08 PM
> To: Mark Randol
> Cc: si-list@xxxxxxxxxxxxx
> Subject: Re: [SI-LIST] Low Load Probe Suggestions
>=20
> For input capacitance that low, you need a FET probe like the=20
> Tek P6245.=20
> Do your homework at the Tek and Agilent websites and I'm sure=20
> you'll find what you want.
>=20
> Orin
> =20
> On Wed, 12 Sep 2007 10:09:33 -0700 "Mark Randol"=20
> <Mark.Randol@xxxxxxxxxx>
> writes:
> > I realize this is like asking gear heads what motor oil=20
> they prefer,=20
> > but for low loading what probes do you prefer?  I know what=20
> I've used,=20
> > but just wondering what else might be available.
> >=20
> > I'd prefer <1pF capacitance and at least 100kohm resistance. =20
> > Bandwidth
> > up to at least 500MHz, preferably into GHz.  Low frequency=20
> should push=20
> > towards 10kHz.  Tip voltages typically <5V, almost always <15V.
> > Some
> > wiggle room is allowed in the 'specs'.
> >=20
> > Regards,
> > --
> > Mark Randol, RF Evaluation & Application Engineer ON Semiconductor
> > 901 S. Mopac Expressway
> > Barton Oaks 4, Suite 343
> > Austin, TX 78746
> > 512-329-5640 (voice), 512-329-8151 (FAX) =3D20 =3D20
> >=20
> > > -----Original Message-----
> > > From: si-list-bounce@xxxxxxxxxxxxx=3D20 =20
> > >[mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Doug Smith
> > > Sent: Wednesday, September 12, 2007 1:30 AM
> > > To: emc-pstc; SI-List
> > > Subject: [SI-LIST] Fluorescent light noise =3D20  Hi Everyone, =
=3D20 =20
> > >For years the electronic fluorescent light over the table I=3D20  =
do=20
> > >many of my experiments has been putting "fuzz" in some=3D20  scope=20
> > >measurements. So, I decided to measure what was going=3D20  on. =
This=20
> > >month's Technical Tidbit on my site is:
> > >=3D20
> > > Abstract: Electronic fluorescent lights are capable of=3D20 =20
> > >generating significant EMI. The nature of the EMI=20
> resulting=3D20  from=20
> > >internal switching used by such a light is presented.=3D20  The=20
> > >amplitudes measured are significant and could affect high=3D20 =20
> > >impedance analog circuits.
> > >=3D20
> > > The results are surprising in the amplitude observed at=20
> 48=3D20  kHz.=20
> > >Go to http://emcesd.com .  The picture of the scope=3D20  probe and =

> > >fluorescent light is the link to the article.
> > >=3D20
> > > Doug
> > > --
> > > -------------------------------------------------------
> > >      ___          _       Doug Smith
> > >       \          / )      P.O. Box 1457
> > >        =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D          Los =
Gatos, CA=20
> > 95031-1457
> > >     _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
> > >   /  /\  \ ] /  /\  \     Mobile:  408-858-4528
> > > |  q-----( )  |  o  |    Email:   doug@xxxxxxxxxx
> > >   \ _ /    ]    \ _ /     Website: http://www.dsmith.org
> > > -------------------------------------------------------
> > >=3D20
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