[Test-Equipment] probe question

[J. Forster]

OK. Most 7xxx probes have both that grounding ring just behind the tip and
the place for the clip closer to the cable entry point.

The ring is usuaally used with a two-prong adapter with a spring loaded
needle point spaced 3/8" or 1/2" off to the side.

I usually use the rear connection and ground lead.

BTW, the probe is almost certainly just a 4950 Ohm resistor in parallel
with a variable cap of roughly 0.5 to 1.5 pF. That is connected via low C
cable to the PI.

Best,

-John

================




> John,
>
> No the pix indicates its a small ring that goes
> over the outer of the tip surely to somewhat minimize lead inductance,
> etc.
>
> Larry
>
> At 01:08 PM 5/29/2011, you wrote:
>>The ground "clip" is likely a 3" lead with a #6-32 screw on one end and
>>the "U" clip on the other, as I mentioned previously.
>>
>>Are you sure it's not 5000 Ohms at DC and 1500 Ohms at high frequency?
>>
>>-John
>>
>>===============
>>
>>
>>
>> > I forgot to mention there is an included 3"
>> > ground clip and other accessories. The ground clip is 175-0249-00.
>> >
>> > Larry
>> > At 11:44 AM 5/29/2011, you wrote:
>> >>Hi. While going through my Tek probes, I came
>> >>across a strange one. Although the P6057 was not
>> >>listed in the Tek chart I found on the WWW, I
>> >>found several descriptions for it. It's: 100X 5K
>> >>ohms .5 Watts What's puzzling is there is no
>> >>ground wire. It has a VERY low capacity (around
>> >>1pF), and it's supposed to be good to 1 GHz. I
>> >>don't know if there is a part missing. It
>> >>doesn't appear so and the description states no
>> >>grd ref. It DOES have an "IDENT" button. Any
>> >>help out there? ron N4UE -----Original
>> >>Message----- From: John Sehring
>> >><wb0eq at yahoo.com> To: Tektronix O'scope
>> >><TekScopes at yahoogroups.com> Sent: Sun, May 29,
>> >>2011 10:19 am Subject: [TekScopes] ESR meter ESR
>> >>meter kit ordered today from EVB (nice guy, that
>> >>Vitor). Thanks again for big helps. Roger,
>> >>wilco, over & out! 'Nuf said. --John Sehring
>> >>VE6/WB0EQ Okotoks, Alberta Canada __._,_.___
>> >>Reply to sender | Reply to group | Reply via web
>> >>post | Start a New Topic Messages in this topic
>> >>(93) Recent Activity: New Members 10 New Photos
>> >>12 Visit Your Group MARKETPLACE Find useful
>> >>articles and helpful tips on living with
>> >>Fibromyalgia. Visit the Fibromyalgia Zone today!
>> >>Stay on top of your group activity without
>> >>leaving the page you're on - Get the Yahoo!
>> >>Toolbar now. Switch to: Text-Only, Daily Digest
>> >>• Unsubsccribe • Terms of Use . __,_._,___
>> >>_______________________________________________________________
>> >>Test-Equipment mailing list Home:
>> >>http://mailman.qth.net/mailman/listinfo/test-equipment
>> >>Help: http://mailman.qth.net/mmfaq.htm Post:
>> >>mailto:Test-Equipment at mailman.qth.net This list
>> >>hosted by: http://www.qsl.net Please help
>> >>support this email list: http://www.qsl.net/donate.html
>> >
>> > ______________________________________________________________
>> > Test-Equipment mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/test-equipment
>> > Help: http://mailman.qth.net/mmfaq.htm
>> > Post: mailto:Test-Equipment at mailman.qth.net
>> >
>> > This list hosted by: http://www.qsl.net
>> > Please help support this email list: http://www.qsl.net/donate.html
>> >
>> >
>>
>>
>>______________________________________________________________
>>Test-Equipment mailing list
>>Home: http://mailman.qth.net/mailman/listinfo/test-equipment
>>Help: http://mailman.qth.net/mmfaq.htm
>>Post: mailto:Test-Equipment at mailman.qth.net
>>
>>This list hosted by: http://www.qsl.net
>>Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Test-Equipment mailing list
> Home: http://mailman.qth.net/mailman/listinfo/test-equipment
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Test-Equipment at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>