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Learn to solve the Rubik’s Cube easy with this simple beginner method: ruclips.net/video/9spDGBeWl1o/видео.html www.kevingittemeier.com/how-to-solve-rubiks-cube-easy/
The fact that the OEM leads are so short made me think that accuracy goes down as the lead length goes up. I know the DE5000 has a zero function to compensate for capacitance and inductance of the parallel lines, but that zero function is done at one frequency and one exact position of the two lines, with no current flowing. Serious accuracy won't ever be important for my purposes, but it would be interesting to see how accurate measurements are. Since you didn't destroy the original TL-21 you might be able to compare one with the other in a little experiment. At the end you allude to another video, I'll go to check that out next.
Learn to solve the Rubik’s Cube easy with this simple beginner method: ruclips.net/video/9spDGBeWl1o/видео.html www.kevingittemeier.com/how-to-solve-rubiks-cube-easy/
The TL200 clips and cables do not work for me with the TI-21. But the Atoplee clip and it's cables does. I believe that the problem is with the lack of shielding on the wires of the TL200 - even though they're 4-wire. During calibration I was getting passes and fails in open, and mostly fails with shorted: random EMF pickup, I think. I'm sourcing coax to try with the TL200, and I think it will work perfectly then.
Thanks for the info. I wondered the same about the shielding. More expensive model LCR meters like Agilent/Keysight only have 2 wire and no shielding which I found odd. It didn’t really get great reviews despite the cost and the brand being very good. Look for future giveaways on my channel - Also be sure to follow on Social Media for Giveaways & Announcements: Instagram: instagram.com/ktfg_9 Twitter: twitter.com/KTFG9 Facebook Page: facebook.com/KTFG1 Reddit: www.reddit.com/user/KTFG Pinterest: www.pinterest.com/KTFG9 *Soon to have another giveaway with the next tutorial.* My Website: www.kevingittemeier.com
@@KTFG There is a lot to say about 2-wire. I've just wired the TL200 clips with stereo cable. I'm iffy about it's capacitance but at a little over 2 feet each it may be okay... Will do the TL-21 end tomorrow and post how it goes. As a side note, I may have had better luck with unshielded 2 wire clips if there was a solid connection between the guard terminal of the TL-21 and something in close electromagnetic proximity to the TL-200 clips... On the other hand if it's unshielded two wire, shouldn't it be a twisted pair? I missed that possibility too. The TL200 clips might work if the pairs can be twisted first, maybe. Just a thought.
Shazam! Using shielded stereo cable with the TL200 clips works. I tested some stuff and did a comparison with the Atoplee set-up. Inductance, capacitance and resistance values are very nearly identical. Q and D factors in inductors and capacitors respectively are very comparable, but vary a little. I'll feel better if I can get some low capacitance cable at least as nice as what the Atoplee uses, but the pricing that I've seen for a limited length - about 10 feet - of thin, low capacitance coaxial cable is ridiculous! Checking revealed that the repurposed stereo cables have about twice the capacitance of the cables that came with the Atoplee clips. Luckily the DE-5000 can accommodate the difference. Besides, this difference may be much smaller than between the TL-21s original pair of 2 wire clips and the Atoplee set-up with it's 75 ohm characteristic impedance cables of longer than 7cm length blah blah blah. A nice confirmation of theory, and that the DE-5000 has "authority", is the way the measured cable capacitance roughly doubles ("roughly" pointing to an unavoidable consequence of two unequal cable lengths - a 5cm or 2 inch difference in length within the body of the TL200 clips) when the jaws of a clip are closed (two cable capacitances in parallel) compared to open (only one cable capacitance measured). These capacitance measurements are between the center conductor and shield, of course, and the capacitance goes up significantly (jaws closed only) when the shield of one cable is connected with the other cable's shield from the same clip - the final configuration within the TL-21. Of course, the shields are left unconnected, and insulated from all else, within the clip. A main calibration thing to watch for is the way the jaws of the two TL200 clips close on each other: the "crocodiles" have to be "nose to nose" and 90 degrees relative to each other so that the 4 jaws, or rows of teeth, all short to each other. Otherwise a FAIL will result in the shorting phase of calibration. And during the open phase of calibration, the jaws of each clip must be left alone (left closed) - the OPEN phase means keeping both clips electrically unconnected, or open. As you point out, the upper and lower jaws of the original clips are not isolated. This clip end shorting of the -1 to -2 and of +1 to +2 circuits is probably insignificant just because of the short lead length. It t seems that at any lead length the shield connection is completely necessary.
You don't need Kelvin clips for large value components such as electrolytic/film capacitors and large inductors. The Kelvin connection is only required when the inductance or capacitance of the flyleads are an appreciable percentage of the measured inductance/capacitance.
I couldn’t get this LCR meter to calibrate with regular leads. The Agilent/Keysight uses regular leads. What about accurate ESR readings of electrolytics?
Even those with the banana plugs aren't four-wire for the LCR meter you have. I'm in the same situation. I wish they made one of those adapters that gave five banana plugs (the extra for guard), then you could plug in normal four-wire leads. I'll have to hack up my TL-21 as you are doing.
The Kevlin Clips in this VideoAtoplee Kelvin Alligator BNC Test Lead Set for LCR Meter: amzn.to/2tEfyz6 TestHelper TL200 LCR Meter Kelvin Clip 4mm Banana Plug: amzn.to/2KykeA4 Tl-21 Alligator Test Lead Case (for DE-5000 LCR Meter) amzn.to/2KjUuZf
How do you test resistance with 4 contact points ? Like how do you check a resistor with less then 1 ohm, just clip it in to each end of the alligator ?
+Metaldetector Experimenter Kind of crazy. Not sure why they don’t offer optional accessories. I am about to start on a modification that will allow any banana jack kelvin clips to be used. Those don’t have a shield so should not fail a calibration or have quality control (construction) issues.
Der De-5000 amzn.to/2yQxFa2
Atoplee Kelvin Alligator BNC Set: amzn.to/2tEfyz6
TestHelper TL200 Kelvin Clip 4mm Banana Plug: amzn.to/2KykeA4
Tl-21 Alligator Test Lead Case (for DE-5000 LCR Meter) amzn.to/2KjUuZf
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Learn to solve the Rubik’s Cube easy with this simple beginner method:
ruclips.net/video/9spDGBeWl1o/видео.html
www.kevingittemeier.com/how-to-solve-rubiks-cube-easy/
DE-5000 TL-21 Kelvin Clip Upgrade: ruclips.net/video/rgqQRzZM80Q/видео.html
Learn to solve the Rubik’s Cube easy with this simple beginner method:
ruclips.net/video/9spDGBeWl1o/видео.html
www.kevingittemeier.com/how-to-solve-rubiks-cube-easy/
The fact that the OEM leads are so short made me think that accuracy goes down as the lead length goes up. I know the DE5000 has a zero function to compensate for capacitance and inductance of the parallel lines, but that zero function is done at one frequency and one exact position of the two lines, with no current flowing. Serious accuracy won't ever be important for my purposes, but it would be interesting to see how accurate measurements are. Since you didn't destroy the original TL-21 you might be able to compare one with the other in a little experiment. At the end you allude to another video, I'll go to check that out next.
Electronics Testing & Equipment Playlist:
ruclips.net/p/PL5bXe_lvrKgafjJs6-U55nnVdQg0XOamu.
Elevator Playlist:
ruclips.net/p/PL5bXe_lvrKgYLfOnklNKxszUxS7CQHTSI.
Learn to solve the Rubik’s Cube easy with this simple beginner method:
ruclips.net/video/9spDGBeWl1o/видео.html
www.kevingittemeier.com/how-to-solve-rubiks-cube-easy/
2x2 Rubik's Cube Beginner Tutorial
How To Solve 2x2 Rubik's Cube: So Easy A 3 Year Old Can Do It: ruclips.net/video/UYCeyu_pbTI/видео.html
The TL200 clips and cables do not work for me with the TI-21. But the Atoplee clip and it's cables does. I believe that the problem is with the lack of shielding on the wires of the TL200 - even though they're 4-wire. During calibration I was getting passes and fails in open, and mostly fails with shorted: random EMF pickup, I think. I'm sourcing coax to try with the TL200, and I think it will work perfectly then.
Thanks for the info. I wondered the same about the shielding.
More expensive model LCR meters like Agilent/Keysight only have 2 wire and no shielding which I found odd. It didn’t really get great reviews despite the cost and the brand being very good.
Look for future giveaways on my channel - Also be sure to follow on Social Media for Giveaways & Announcements:
Instagram: instagram.com/ktfg_9
Twitter: twitter.com/KTFG9
Facebook Page: facebook.com/KTFG1
Reddit: www.reddit.com/user/KTFG
Pinterest: www.pinterest.com/KTFG9
*Soon to have another giveaway with the next tutorial.*
My Website: www.kevingittemeier.com
@@KTFG There is a lot to say about 2-wire. I've just wired the TL200 clips with stereo cable. I'm iffy about it's capacitance but at a little over 2 feet each it may be okay... Will do the TL-21 end tomorrow and post how it goes.
As a side note, I may have had better luck with unshielded 2 wire clips if there was a solid connection between the guard terminal of the TL-21 and something in close electromagnetic proximity to the TL-200 clips... On the other hand if it's unshielded two wire, shouldn't it be a twisted pair? I missed that possibility too. The TL200 clips might work if the pairs can be twisted first, maybe. Just a thought.
Shazam! Using shielded stereo cable with the TL200 clips works. I tested some stuff and did a comparison with the Atoplee set-up. Inductance, capacitance and resistance values are very nearly identical. Q and D factors in inductors and capacitors respectively are very comparable, but vary a little. I'll feel better if I can get some low capacitance cable at least as nice as what the Atoplee uses, but the pricing that I've seen for a limited length - about 10 feet - of thin, low capacitance coaxial cable is ridiculous!
Checking revealed that the repurposed stereo cables have about twice the capacitance of the cables that came with the Atoplee clips. Luckily the DE-5000 can accommodate the difference. Besides, this difference may be much smaller than between the TL-21s original pair of 2 wire clips and the Atoplee set-up with it's 75 ohm characteristic impedance cables of longer than 7cm length blah blah blah.
A nice confirmation of theory, and that the DE-5000 has "authority", is the way the measured cable capacitance roughly doubles ("roughly" pointing to an unavoidable consequence of two unequal cable lengths - a 5cm or 2 inch difference in length within the body of the TL200 clips) when the jaws of a clip are closed (two cable capacitances in parallel) compared to open (only one cable capacitance measured). These capacitance measurements are between the center conductor and shield, of course, and the capacitance goes up significantly (jaws closed only) when the shield of one cable is connected with the other cable's shield from the same clip - the final configuration within the TL-21. Of course, the shields are left unconnected, and insulated from all else, within the clip.
A main calibration thing to watch for is the way the jaws of the two TL200 clips close on each other: the "crocodiles" have to be "nose to nose" and 90 degrees relative to each other so that the 4 jaws, or rows of teeth, all short to each other. Otherwise a FAIL will result in the shorting phase of calibration. And during the open phase of calibration, the jaws of each clip must be left alone (left closed) - the OPEN phase means keeping both clips electrically unconnected, or open.
As you point out, the upper and lower jaws of the original clips are not isolated. This clip end shorting of the -1 to -2 and of +1 to +2 circuits is probably insignificant just because of the short lead length. It t seems that at any lead length the shield connection is completely necessary.
Teşekkür ederim. Çift kablolu krokodillerin kablo yapısını merak ediyordum. Çok yararlı video oldu benim için.
You don't need Kelvin clips for large value components such as electrolytic/film capacitors and large inductors. The Kelvin connection is only required when the inductance or capacitance of the flyleads are an appreciable percentage of the measured inductance/capacitance.
I couldn’t get this LCR meter to calibrate with regular leads.
The Agilent/Keysight uses regular leads.
What about accurate ESR readings of electrolytics?
@@KTFG You do have a point about the ESR accuracy. Best stick to Kelvin leads then.
Off the subject but here is how Emily from the videos solved a Rubik’s Cube at 3 years old: ruclips.net/video/9spDGBeWl1o/видео.html
2x2 Rubik's Cube Beginner Tutorial
How To Solve 2x2 Rubik's Cube: So Easy A 3 Year Old Can Do It: ruclips.net/video/UYCeyu_pbTI/видео.html
Even those with the banana plugs aren't four-wire for the LCR meter you have. I'm in the same situation. I wish they made one of those adapters that gave five banana plugs (the extra for guard), then you could plug in normal four-wire leads. I'll have to hack up my TL-21 as you are doing.
+blargg
Here is a simple TL-21 mod ruclips.net/video/rgqQRzZM80Q/видео.html.
Did this one first but will be doing banana jack mod next.
The Kevlin Clips in this VideoAtoplee Kelvin Alligator BNC Test Lead Set for LCR Meter: amzn.to/2tEfyz6
TestHelper TL200 LCR Meter Kelvin Clip 4mm Banana Plug: amzn.to/2KykeA4
Tl-21 Alligator Test Lead Case (for DE-5000 LCR Meter) amzn.to/2KjUuZf
How do you test resistance with 4 contact points ?
Like how do you check a resistor with less then 1 ohm, just clip it in to each end of the alligator ?
Watch this video
ruclips.net/video/0vMvCVyOp9g/видео.html
so, what is conclusion ? which is best ...
Neither is best it just really depends on what type clips you need, large alligator or small
@@KTFG will get both
A little bit short more like way too short!
+Metaldetector Experimenter
Kind of crazy. Not sure why they don’t offer optional accessories. I am about to start on a modification that will allow any banana jack kelvin clips to be used.
Those don’t have a shield so should not fail a calibration or have quality control (construction) issues.