TSP #226 - Saker 50kV Common-Mode Fiber Isolated Active Probe (XFVP) Review, Teardown & Experiments
In this episode Shahriar reviews the Saker fiber-optically isolated active voltage probe XFVP. The fully galvanically isolated probe can reject common-mode signals in the tens of thousands of volts range. Signals with fast rising common-mode can also be rejected thanks to its high bandwidth of beyond 250MHz. Information about the Saker probe can be found here:
https://saker-mv.com/fiber-isolated-voltage-probe/
This review is organized as follows:
00:00 – Introduction & optical probe overview, principle of operation, dividers and accessories
05:07 – Full teardown of the probe head, probe body and 500x attenuator box
09:28 – Differential probe versus an optically isolated probe architecture
11:22 – Excess noise, SNR, dynamic range, THD and auto-calibration experiments
18:13 – Measured bandwidth of probe, S-parameters, gain ripple, phase response and group delay
19:47 – Measuring a GaN switching behavior with 400V of common-mode signal swing
27:03 – Concluding remarks
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