PX8000 Precision Power Scope


Many general-purpose oscilloscopes have options for making power measurements, but the PX8000 Precision Power Scope from Yokogawa is an oscilloscope dedicated to power measurements.

Traditional power measurement instruments cannot provide accurate time measurements; oscilloscopes are not designed to measure power. The PX8000 is the world's first precision power scope, bringing oscilloscope-style time-based measurement to the world of power measurement. It can capture voltage and current waveforms precisely, opening up applications and solutions for a huge variety of emerging power measurement problems. 

In addition to measuring power on one-hase to three-phase AC mains, other applications include:

  • Motor and inverter testing
  • Wind turbine power measurements
  • Reactor-loss measurements on inverter boost circuits
  • Transient responses for motors used in industrial robots
  • Wireless chargers
  • Power-distribution networks

To make the measurements these applications demand, the PX8000 can calculate power simultaneously with measuring voltage and current. Using on-screen cursors, you can get power measurements over any time interval. Like any oscilloscope, the PX8000 can capture anomalies on voltage, current, or power waveforms.

Voltage, current, and power waveforms can have both fundamental frequencies and harmonics and you often need to measure them in both the time domain and the frequency domain. With FFT analysis, you can see up to the 500th harmonic that switching loads can place on a power-distribution network. In addition, the PX8000 can display waveforms using an X-Y display. That lets you see the relationship of speed and torque in motors.

Because it's based on the ScopeCorder, the PX8000 has a wide range of communications capabilities such as GPIB, Ethernet, USB IRIG, and video output. USB ports also let you attach external storage for transferring data to a PC for analysis. Oscilloscope-related connections include trigger in/out and an external clock input.

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PX8000 Precision Power Scope (3.49 MB)

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