Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Cursitor Doom Newsgroups: sci.electronics.design Subject: Scope Probes off Ebay Date: Sun, 07 Apr 2024 14:51:29 +0100 Organization: A noiseless patient Spider Lines: 14 Message-ID: <4l851jte21egs8mmkqou4proepifknb7v7@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Date: Sun, 07 Apr 2024 13:51:31 +0200 (CEST) Injection-Info: dont-email.me; posting-host="047d140331540669533227d2fbe449a7"; logging-data="2968644"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19muYT3t6Hy670cmahbeAxLCxNSEMXERwE=" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:fj0d1lNf5L4BpIegdNN9ZXiNSdg= Bytes: 1829 I never learn. I bought a used "Agilent 500Mhz probe" off Ebay for 50 quid as the highest bandwidth probe I thought I had was a 150Mhz Tek one. Anyway, I have a large selection of old probes lying around so decided to check to make sure the "Agilent" one was genuine. Not surprisingly it turns out it isn't. I haven't calculated what it's real bandwidth is. I've established it's not as sensitive as the 150Mhz one and that's all I need to know. Whilst I was going through this palarva, I tested a old probe I came across that I've never used before and was amazed at the improvement in signal I got with it. I've just Googled its part number and it turns out it's a 3.5Ghz passive probe! I never even knew I had one so fast. I would never have ordered the "500Mhz" one if I'd known I had this forgotten-about one already. So the fake's going back for a refund and I won't be ordering any more probes from anywhere in the forseeable future.