9 Nov
2005
9 Nov
'05
6 a.m.
Subject: Re: Nicolet 4094 Digtial Storage Scope?
From: "Joe R." <rigdonj at cfl.rr.com>
Date: Wed, 09 Nov 2005 08:31:14 +0000
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
At 10:29 AM 11/8/05 -0800, Dwight wrote:
>>From: "Joe R." <rigdonj at cfl.rr.com>
FWIW I also found message on the net that indicatd
that the probes for
these need more capacitance compensation than most probes provide so a
"standard" set of probes may not work perfectly on it. Some brands of
probes and some older Tektronix probes do have adaquete adjustment and do
work fine. Right now I'm using a set of probes from one of my other scopes
and I don't want to mess with their adjustment so I'm just putting up with
the distortion. I'll find an extra set of probes and try to adjust them and
dedicate them to this scope.
Joe
Probe compensation is a trivial thing and it's nominally done whenever
a probe is used with a scope when it's use was unknown. The range of
adjustment is usually enough that any proble works with any scope.
I've only had rare problems with this and usually with elcheapo probes.
Some probes have higher capacitance for example 1x and long cable 10x
probes. It's not a bad thing only something to be aware of as SOME
circuits and measurements are sensitive to the capacitance and results
may vary. Usually it's very high impedence or fast HF designs that are
most likely to show this.
Allison