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| Playing with Probes: Guessing game. |
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| BillyO:
--- Quote from: jonpaul on March 05, 2023, 01:37:49 pm ---Interesting to compare your probe responses to a zero cost, low L ghz Zo... --- End quote --- I have a home made Z0 probe, but it's not made with very good cable. I guess I could try to make another. |
| jonpaul:
For a Zo probe, the BW and pulse abberation, transients response is of course à function of the cable impedance , discontinuility, legnth. We,have,used Belden RG174 /U thin coax, 30..60cml. The best cables are very WB coax like Belden 1694. Tektronix made 50 cm précision 50 ohm coax BNC See tektronix probe circuit books http://www.davmar.org/concepts.html and Belden Cable app notes,and specs. Jon |
| H3g3m0n:
Anyone know if the Hantek - PP-300 is legit or some knock off? The Hantek website only lists up to PP-200 and I don't think they have scopes above 250Mhz. Although they do have PP-250's in some of the screenshots of the 250Mhz scopes so maybe they just haven't updated it. |
| BillyO:
--- Quote from: H3g3m0n on March 09, 2023, 11:31:57 am ---Anyone know if the Hantek - PP-300 is legit or some knock off? --- End quote --- I ordered mine off Amazon.ca. They came in exactly the same packaging as the probes I got with my Hantek USB scope. None of them have Hantek written on them or on the "documentation" that came in the pouches. If you ask me I think Hantek just buy whatever from whoever. I don't think they make probes. https://www.amazon.ca/gp/product/B07P6DWRLZ |
| H3g3m0n:
--- Quote from: BillyO on March 09, 2023, 05:07:12 pm ---They came in exactly the same packaging as the probes I got with my Hantek USB scope. None of them have Hantek written on them or on the "documentation" that came in the pouches. --- End quote --- The PP-150 I got with my DSO2C10 does have Hantek written on the documentation, the documentation covers PP-80/150/200. But the probe itself just has PP-150 on the sticker, no Hantek branding. It's also a gray version (Hantek lists PP-XX0 and PP-XX0B with the B being the black version's). My one didn't come with a grounding spring (intentional as the documentation had no mention of one). I think the higher spec ones, (or maybe the black ones) do come with a grounding spring though. I think 150Mhz DSO2X15's come with black PP-200's since they need more bandwidth. I recently have ordered a PP-250 from Aliexpress, not yet arrived. I don't really have a good way to test them myself (and don't really have the knowledge). I'll see if there is any branding or not (not that really means much coming from Aliexpress). --- Quote from: BillyO on March 09, 2023, 05:07:12 pm ---If you ask me I think Hantek just buy whatever from whoever. I don't think they make probes. --- End quote --- Wouldn't surprise me. But I would be skeptical about a cheap unbranded PP-300 probe really being 300Mhz though. They might all be PP-60's rebranded and sold at different price points. |
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