• EEVblog 1715 - Euler Precision eSAP-30 3GHz Active Probe REVIEW EEVblogOctober 23, 2025EEVblog,ReviewsComments Offon EEVblog 1715 - Euler Precision eSAP-30 3GHz Active Probe REVIEW3,290 Views Facebook Twitter LinkedIn Swiss company Euler Precision have a new 3GHz active probe on Crowd Supply, let’s take a look.https://www.crowdsupply.com/euler-precision/esap-30 00:00 - The Euler Precision eSAP-30 Active Probe01:26 - The problem with passive probes, Capacitance Reactance03:31 - Unboxing05:55 - Open Source?06:46 - It’s all about the probe accessories08:08 - Measurement report10:02 - Real world measurement using Keysight reference probe11:57 - Testing the Euler probe with a flat flex probe interface13:13 - Let’s probe it even better…15:55 - Noise comparison test16:09 - Teardown19:26 - 700MHz passive probe comparison20:48 - Conclusion Forum:https://www.eevblog.com/forum/blog/eevblog-1715-euler-precision-esap-30-3ghz-active-probe-review/ Podcast:Download

Article Summaries:

  • Swiss maker Euler Precision has launched the eSAP‑30, a 3 GHz active probe available on Crowd Supply. In EEVblog episode 1715, the reviewer unboxes the probe, discusses the limitations of passive probes (capacitance reactance), and examines the probe’s accessories and open‑source potential. Performance is benchmarked against a Keysight reference probe and a 700 MHz passive probe, with noise‑comparison tests and real‑world measurements on a flat‑flex interface. A teardown reveals the internal design, and the reviewer concludes that the eSAP‑30 offers competitive bandwidth and noise performance for high‑frequency probing.

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