Rigol PHA1150 – 100 MHz 1500 V Differential Voltage Probe

The Rigol PHA1150 is a 100 MHz differential voltage probe engineered for high-voltage measurements up to 1500 V. Dual attenuation settings (50X and 500X) deliver measurement ranges of ±150 V and ±1500 V respectively, with maximum common-mode voltage rated to ±1500 V (DC + peak AC). The probe combines high input impedance (10 MΩ between differential inputs), low input capacitance (<2 pF between inputs), and ≤3.5 ns rise time to capture transient events with precision. Strong common-mode rejection and selectable 5 MHz bandwidth limiting reduce noise on low-frequency signals. USB Type-C powered operation (5 V, 1 A) enables field deployment via standard adapters or portable supplies.

– Technical Specifications

• Bandwidth: 100 MHz (-3 dB); 5 MHz selectable limit with low-pass network
• Rise Time: ≤3.5 ns
• Attenuation: 50X (±150 V), 500X (±1500 V)
• Maximum Common-Mode Voltage: ±1500 V (DC + peak AC)
• Input Impedance: 5 MΩ ±1% (each input to ground); 10 MΩ ±1% (between inputs)
• Input Capacitance: <4 pF (input to ground); <2 pF (between inputs)
• Input Referred Noise: <50 mV @ 50X, <300 mV @ 500X
• Propagation Delay: 16 ns
• Output Impedance: 50 Ω
• Accuracy: ±2%
• Safety Rating: 600 V CAT III, 1000 V CAT II (voltage-to-earth)

– Key Features

• Dual-range attenuation for flexible measurement spanning from 150 V to 1500 V
• Audible and visual overrange alarm with manual disable
• Auto-memory function preserves last working configuration
• 1 m cable with BNC output for direct connection to oscilloscopes and data acquisition systems
• Supplied with alligator clips (CAT II 1000 V, CAT III 600 V) and insulated plunger hooks

– Typical Applications

• Power supply topology characterization
• Switching frequency analysis on low-impedance rails
• Floating or referenced high-voltage signal acquisition
• Common-mode noise rejection in multi-phase systems

– Compatibility & Integration

Standard BNC output integrates with oscilloscopes and digitizers from all major manufacturers. USB Type-C power input accepts standard adapters, oscilloscope USB ports, or mobile power banks (5 V, 1 A minimum).