Tetkronix Probe Ground Lead with Screw End - Page 1
Forum section: electronics / testgear

author: Electro Fan
author_rank: Super Contributor
timestamp: October 24, 2015, 10:11:12 pm
content: Anyone have any links to the Tektronix accessories that were intended to go on the screw end of this probe ground lead? (Or generally know what was intended to be connected to the screw lead?) I presume it was something like an alligator clip or hook, etc?? Thanks

author: dadler
author_rank: Unknown
timestamp: October 24, 2015, 10:16:32 pm
content: Two nearly identical looking accessories came with my HP 10020A resistive divider set, along with the corresponding shrouded alligator clips. So if I had to guess, I'd say alligator clips

author: Electro Fan
author_rank: Super Contributor
timestamp: October 24, 2015, 10:24:23 pm
content: Quote from: dadler on October 24, 2015, 10:16:32 pmAny chance you can look inside the attachment point on the alligator clips (or other accessories) and see if there are really threads inside the alligator clips (or other accessories), or if they are just regular non-threaded pressure fit connections? Thx

author: Electro Fan
author_rank: Super Contributor
timestamp: October 24, 2015, 11:09:06 pm
content: Quote from: dadler on October 24, 2015, 10:40:53 pmThat is pretty definitiveHappen to have any model/part numbers on the alligator clips? HP/Agilent 5061-1258, perhaps?Thanks

author: tggzzz
author_rank: Super Contributor
timestamp: October 24, 2015, 11:14:04 pm
content: Quote from: dadler on October 24, 2015, 10:16:32 pmThe HP10020A is a lovely probe to use. I have three, and I like the spear ground tip so much I made some for my other probes; seehttps://entertaininghacks.wordpress.com/2015/04/23/scope-probe-accessory-improves-signal-fidelity/But if you have a 1.5GHz HP10020A probe, why would you "ruin" its HF performance by sticking 150nH in series with it?

author: dadler
author_rank: Unknown
timestamp: October 24, 2015, 11:17:29 pm
content: The datasheet that came with the HP divider set shows HP part # 5061-1258.Google yielded this result:http://www.ebay.com/itm/Agilent-HP-Keysight-5061-1258-Alligator-Clip-/251022621280The thread pitch is ~.85mm, the smooth shaft diameter is ~2.38mm, and threaded diameter is ~3.39mm. If these dimensions match yours, then the HP part above may fit your tek adapter.FYI the part #s for the cable pieces are 10020-61602/10020-61603. Here is an eBay link to the short one:http://www.ebay.com/itm/10020-61602-Agilent-HP-2-in-Ground-Cable-Assembly-/271148086105

author: dadler
author_rank: Unknown
timestamp: October 24, 2015, 11:21:02 pm
content: Quote from: tggzzz on October 24, 2015, 11:14:04 pmI've never actually used these ground leadsI've always used the "spanner ground" (spear?), part# 5060-0549.I made an offer of $150 to a seller on eBay for the resistive divider set, which I thought was a pretty good deal. I don't think it's ever been used, and included all of the accessories.

author: MarkL
author_rank: Unknown
timestamp: October 26, 2015, 02:28:34 am
content: Quote from: Electro Fan on October 24, 2015, 10:11:12 pmTektronix calls it a "ground lead stud". It has a 6-32 thread. An alligator clip is the only thing I've ever seen that goes on the end, and it's threaded too. The Tektronix part number for the alligator clip is 344-0046-00.Mine look a little different from the HP ones, pics below. This one is from a P6131 accessory set.These guys have them on their web site for $1/ea (really?):http://www.bmisurplus.com/products/ask/41024-tektronix-344-0046-00-alligator-clips

author: vk6zgo
author_rank: Super Contributor
timestamp: October 26, 2015, 02:39:49 am
content: Quote from: MarkL on October 26, 2015, 02:28:34 amYeah,all the big old clunky "classic" Tek probes (& some of the smaller,more modern ones) used screw on alligator clips like that.I've only seen the more "high tech" looking HP ones once or twice over the years,as most of my Employers used Tektronix probes on all their 'scopes.HP 'scopes were fairly rare,too,if it came to that.