Yokogawa PX8000 Precision Power Scope, 100 MS/s, 20 Hz to 6.4 kHz

The Yokogawa PX8000 Precision Power Scope is a 12-bit, 100 MS/s power measurement instrument engineered for high-accuracy, time-based analysis of instantaneous voltage and current waveforms. It bridges traditional power analyzers and oscilloscopes, delivering ±(0.1% of reading + 0.1% of range) basic power accuracy across 45 Hz to 66 Hz. The instrument displays up to 16 waveforms simultaneously on a 10.4-inch TFT LCD and captures transient phenomena with oscilloscope-level precision, making it essential for research and development in renewable energy, power electronics, motor drives, and high-efficiency inverter development.

Technical Specifications

• A/D Converter: 12-bit resolution


• Sampling Rate: Up to 100 MS/s


• Basic Power Accuracy: ±(0.1% of reading + 0.1% of range) at 45–66 Hz


• Display: 10.4-inch TFT LCD, 1024×768 XGA


• Simultaneous Waveforms: Up to 16 Voltage Measurement


• Bandwidth: DC and 0.1 Hz to 20 MHz (–3 dB, typical)


• Input Ranges: 1.5/3/6/10/15/30/60/100/150/300/600/1000 Vrms (direct input) Current Measurement


• Direct Input Bandwidth: DC and 0.1 Hz to 10 MHz (–3 dB)


• Sensor Voltage Input Bandwidth: DC and 0.1 Hz to 20 MHz (–3 dB)


• Direct Input Ranges: 10 mA to 5 Arms


• External Sensor Input Ranges: 50 mV to 10 Vrms Power & Supply


• Power Consumption: Maximum 200 VA (up to 400 VA with /PD2 option)


• Rated Supply: 100–120 VAC / 220–240 VAC (auto-switching)


• Rated Frequency: 50/60 Hz


• Withstand Voltage: 1500 VAC for one minute


• Insulation Resistance: 10 MΩ minimum at 500 VDC

Key Features

• Real-time power sampling through simultaneous voltage and current multiplication


• Transient power measurement and cycle-by-cycle trend analysis (up to 4 million points)


• Harmonic analysis supporting harmonics to the 500th order


• 2-channel FFT analysis for frequency-domain inspection


• Frequency measurement: ±0.1% accuracy, 5 MHz maximum, full 5-digit display resolution


• Harmonics measurement fundamental frequency range: 20 Hz to 409.6 kHz (PLL source)


• Specific time-period measurement via cursor-defined intervals


• De-skew function for waveform alignment

Typical Applications

• Power electronics and converter design validation


• Motor drive efficiency and transient analysis


• Renewable energy system characterization


• High-efficiency inverter development and commissioning


• Harmonic distortion assessment in complex load environments

Physical Specifications

• Weight: Approximately 6.5 kg (without certain options)