[SI-LIST] Re: GS or GSG microprobes
- From: "Istvan Novak" <istvan.novak@xxxxxxxxxxxxxxxx>
- To: <lgiacott@xxxxxxxxx>, "SI-List" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 13 Feb 2002 08:25:48 -0500
Luca,
GSG probes are useful for applications where your device to be measured, or
at least its probe-connection area, has the same GSG connection scheme.
This can happen in some co-planar traces/strips on the surface. For regular
single-ended or differential traces and surface-mount components, I would
suggest the GS probe.
Istvan Novak
SUN Microsystems
----- Original Message -----
From: "Luca Giacotto" <lgiacott@xxxxxxxxx>
To: "SI-List" <si-list@xxxxxxxxxxxxx>
Sent: Wednesday, February 13, 2002 3:41 AM
Subject: [SI-LIST] GS or GSG microprobes
>
> Hi all!
>
> I'm about to buy two microprobes (cascade ACP-40) for characterizing
> PCB-level components (microstrips, caps,...). I'm considering a pitch of
> 600 um. And I have to choose between the ground-signal (GS) and the
> ground-signal-ground (GSG) versions.
>
> The GSG clearly has better electrical performances, but I doubt the
> mechanical constraints (pads planarity, vias layout) may be more
> important in such applications, thus the GS one may be more advantageous.
>
> As money is a bounded ressource... I'd like to ask you for
> comments/experiences before choosing.
>
> Thanks in advance,
> Luca
>
> --
> Luca Giacotto <lgiacott@xxxxxxxxx>
>
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