Oscilloscope probes for high-voltage signal measurements

November 05, 2014 // By Graham Prophet
Keysight Technologies has introduced 200-, 300- and 500-MHz, high-voltage probes with a wider input range, higher common-mode rejection ratio and optimised accessories, for testing switching power supplies or power devices and for measuring motor drives and vehicle buses.

The N2804A differential probe has up to 300-MHz bandwidth and ±300-Vdc + peak AC of the maximum differential input range, allowing engineers to use it for a broad range of power applications. The N2805A 200-MHz differential probe comes with a 5-m input cable, which allows engineers to easily reach DUTs over long distances.

The probes have a differential input resistance of 4 MΩ and low input capacitance of 4 pF to minimise circuit loading. The N2804A and N2805A probes are compatible with Keysight oscilloscopes with a 50-Ω AutoProbe interface, which automatically configures the scope for the probe.

The Keysight 10076C 100:1 passive probe with 66.7-MΩ input resistance provides the voltage and bandwidth engineers need for making high-voltage measurements referenced to the ground with low input loading. The probe provides 500-MHz bandwidth when used in conjunction with a spring ground tip to reduce inductive ground loading.

Keysight; www.keysight.com/find/differential / www.keysight.com/find/10076C