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On Fri, Dec 24, 2021 at 05:42 AM, Dave Peterson wrote: > > There are many fine points to learn regarding the TDR use. I think the most > valuable thing you can do at this point is to play with it.

Good day, wow, I think Harvey has covered it all pretty nicely. May I just add that a TM500 mainframe such as a TM501/502/503?still makes a?nice platform for DIY projects. You can buy a defect

There are many fine points to learn regarding the TDR use. I think the most valuable thing you can do at this point is to play with it. Presumably you have no pressing need for this and you can take

BTW, you’ll see in the pictures that the 2003 calibration seals are still intact. So I’m not gonna touch it unless something breaks.

Hello, For those who have followed my thread on the purchase of the 7704A with the 7S12, you May remember that yesterday my 7623 blew tons of smoke out the back when I turned it on. So I removed the

TM500 units have proven to be very handy for me, I have them on almost every workbench, and have several of the high end scope modules, plus all the other goodies. Look for the later polycarbonate

Raymond and Harvey, Yes I read about it being fragiles in that regard. I do keep a 50Ω load on it when not in use. And thanks to Raymond, now I do not forget to discharge the cables. I put some more

UT-141 50 ohm Hardline, which is used to make the TEK jumper on the 7S12, has a MIL number RG-405. If there where enough people (say 5) who wanted one, I have the professional tools to make them. They

The following photos have been uploaded to the 7704A with 7S12 ( /g/TekScopes/album?id=270997 ) album of the [email protected] group. * 9E84D86B-97A0-474A-8B0A-7FFCDD051F4A.jpeg (

Reminds me of one of my college programming classes that was centered around designing small logic circuits. In one lecture, the professor held up a piece of wire that was approximately that same

In the same boat, I made my own. I did a little research on the physics of coax and electromagnetic propagation (speed of light) in it, and found that for RG-174 8 inches of cable takes approximately

Yep, can't get there from here.? You might consider building a curve tracer in a TM500 or TM5000 frame, though.? Assuming you need one. Harvey

Replies interleaved: The TM500 series is older, and generally does not have a microprocessor in it.? The TM5000 series has a microprocessor, HPIB interface (which can be ignored if you don't need it

Boy oh boy, I miss ChuckHarris!! larry

Oh I forgot to include that all my test point voltages are spot on.

It might be however it might not be as well. Given the cost of some of the TM equipment on the secondary market I have seen lately when I take in to account the "power frame" and the plugin with what

Tim, The velocity factor of these semi-rigid patch cables is about 0.67 . For instance the 1 ns cable (015-1023-00) measures about 20 cm (insertion length). There is no indication like RGxxx on these

Ok I’m going to give more details as I left a few out. When I received this it had no power and it turned out to be the infamous tantalum cap in the HV section, replaced with electrolytic. I then

I have the original one, and I have two chinese sma semirigid cable, blue, that I have not tested yet. If you want I can test risetime of the two wires and post the results

oops confused my TEK 7000 scope plug-ins 7CT1N with the adjacentes pile of TM500 stuff.... https://w140.com/tekwiki/wiki/7CT1N Jon