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| Siglent SDS1104X-E In-Depth Review |
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| Strat_84:
The Hameg HZ53 is rated for a much lower voltage (1.2kV vs 2.5kV), it looks the same as the TT-HV150 even though specifications differ. I'm starting to wonder if they just didn't hide the grounded part in the 2.5kV version for safety reasons. Maybe a risk of arcing at high voltage ? On Testec 600V probes the metal part goes down to the black plastic next to the tip, on the 1.5kV probe it doesn't go as low and there's some white plastic in between, and on the 2.5kV one it's all covered. |
| 2N3055:
--- Quote from: Strat_84 on May 25, 2018, 04:33:23 pm ---The Hameg HZ53 is rated for a much lower voltage (1.2kV vs 2.5kV), it looks the same as the TT-HV150 even though specifications differ. I'm starting to wonder if they just didn't hide the grounded part in the 2.5kV version for safety reasons. Maybe a risk of arcing at high voltage ? On Testec 600V probes the metal part goes down to the black plastic next to the tip, on the 1.5kV probe it doesn't go as low and there's some white plastic in between, and on the 2.5kV one it's all covered. --- End quote --- I think you're right, definitely creepage distance will be different. But anyway, that means that Performa1's probe cannot be used with coaxial converter or ground spring... |
| tautech:
Neither of my 100x probes have ground springs but the metal sleeve comes all the way to near the tip like any other probe. http://www.pintek.com.tw/product_detail/landersound/img.php?Company_SN=6002&case=19272 The 1000x 8KV one I have has a long fixed reference lead and NO grounding anywhere near the tip: http://www.pintek.com.tw/product_detail/landersound/img.php?Company_SN=6002&case=127265 Here's the 1kx on the Probe Cal SDS1104X-E Normal acquisition Averages engaged |
| Performa01:
--- Quote from: tautech on May 25, 2018, 08:14:13 pm ---The 1000x 8KV one I have has a long fixed reference lead and NO grounding anywhere near the tip: http://www.pintek.com.tw/product_detail/landersound/img.php?Company_SN=6002&case=127265 --- End quote --- Yes, but we can forgive it that since it's only rated for 40MHz. The TESTEC TT-HV250 on the other hand, has a specified bandwidth of 300MHz, which is totally unrealistic without proper HF grounding at the probe end. |
| Hydron:
RE the testec probe, if you take off the black plastic sleeve (just pull firmly) then the red plastic clip guide thing, you can put the black plastic sleeve back on with enough clearance to fit the BNC adapter. Spring clip would need the sleeve to be left off entirely. If you're poking around with the spring then you're probably using it for the low capacitive loading rather than high voltage so having a metal bit exposed to touch is less of an issue. As for performance, I've tested these with a very fast rise time source and they behave rather well. Couldn't get the compensation 100% perfect in my setup (dead flat top of the waveform was elusive) but it was still a pretty good performance, especially for the price. Biggest downside I see is the friction fit spring clip - is a bit of a "how ya doing" way to retain it and they can come off easier than they should, especially as they get used a bit. |
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