| Products > Test Equipment |
| Sensitive LCR Meter Measurements |
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| Martin72:
The ST28006A test fixture arrived today and I'll be taking it home with me at the weekend. Here are 2 pictures, from the outside the almost 270€ expensive ST version and mine from Aliexpress hardly differ. But after opening it.... ;) |
| KungFuJosh:
How do the plastic holders compare in shape? |
| Martin72:
I'll take direct detail/comparison pictures at the weekend, but what I noticed was that the spring is smoother on the ST fixture. |
| mawyatt:
You can adjust the spring tension by removing the plunger case and/or the end cap. We prefer more pressure on the DUT for better DUT terminal contact. Make a shield like the ST version, you can use a Cu plate/foil or just Aluminum L Bracket. Also make sure the 4 BNCs are electrically well connected to the case, and the cover has good electrical connection to the base case thru the 2 screws holding it on. A little rework and the cheap SMD fixture will be almost as good as the expensive one :-+ Best, |
| Martin72:
I think I will install some kind of second housing made of sheet brass. But first I will repeat the measurements on the ST2830/ET3503, i.e. 10p, 100p and 1n, once with my fixture, then with the ST fixture. Let's see if we can see anything. |
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