Display of Measured Waveforms
Measured voltages and currents are sampled at high speed (maximum 5 MS/s). Power is calculated from the data along with accurately displayed waveforms.

Display Examples:
 

Correlate between displayed waveforms and calculated power values.
Waveform displays and calculated values (e.g. power values) are based on sampled data stored in internal memory, so they are correlated with each other.

Check measurement effectiveness easily.
Measured waveform and calculated values can be checked at the same time to prevent erroneous measurements.

No probe needed for waveform measurements.
Voltage and current waveforms can be measured without using oscilloscope differential probes and current probes. The PZ4000 can make waveform measurements much more accurately than with conventional oscilloscopes.

Wide Bandwidth, High-Precision Measurements
Measurements can be made over a wide frequency range (DC up to 2MHz), making it possible to measure power loss on electronic components, high-frequency lighting equipment, and other devices.

Display Examples:
 

Measurements on inverter lighting equipment
 with a fundamental wave of approximately 50kHz.

Loss measurement
during high-frequency capacitor driving (500kHz)

High-precision power measurements at high frequency.
Waveform displays and calculated values (e.g. power values) are based on sampled data stored in internal memory, so they are correlated with each other.

Lamp current measurement in fluorescent bulbs.
With the PZ4000, you can measure the lamp current of fluorescent bulbs using a Delta Computation function. The function computes the difference of the instantaneous values between the output current of electric ballast and a cathode current.

Loss measurement when actual load is applied to electronic components.
With the PZ4000, you can measure power loss resulting from actual load applications, instead of evaluating characteristics based on small signals using an LCR meter or an impedance analyzer.

Power measurements on extremely low-frequency signals.
Take full advantage of the 4M word internal memory (optional, enough for 4 million samples) to obtain precise measurements of extremely  low-frequency (several mHz) signals.

Dynamic Capturing of Load Fluctuations
Internal memory (maximum 4M words) stores your measurements. You can calculate and display voltage, current, and power values for specific portions of the total memory (equivalent to 100k words of data). The display makes it easy to see how the load fluctuates with time.

Display Examples:
 

Inrush current measurement
 in an inverter-type cleaner.

Efficiency evaluation when inverter output is turned on in a cooking machine using induction heating.

Inrush current and power measurements (at switch-on).
In the past, it was necessary to measure inrush current and power values at power-on using measuring instruments such as oscilloscopes. The PZ4000 performs these measurements much more accurately and greatly simplifies this procedure.

Power measurements in specific states (specific spans in internal memory).
Power measurements on equipment with fluctuating loads are normally obtained by measuring the energy in certain operating patterns over a long time period using an integration function. The average power value is then calculated. In contrast, the PZ4000 lets you make power measurements over a specific period defined by adjustable cursors. This reduces the time required for measurements.

Graphical Power Analysis
The PZ4000 lets you analyze harmonics (up to 500th order) using high-speed sampling. With the FFT calculation function, you can perform spectrum analysis in the high-frequency range (up to 2.5MHz). Analysis results are displayed on spectrum graphs. In addition, vectors showing the fundamental components of distorted waveforms can be displayed to give a visual presentation of the load balance in a 3-phase power supply system.
 

Spectrum analysis of current power
 in inverter output.

Fundamental wave vector display
 in inverter output.

Distorted wave power spectrum analysis.
With the PZ4000, you don't need a frequency analyzer to perform spectrum analysis on the carrier component of an inverter. Up to now, this type of analysis has been difficult. A major advantage with the PZ4000 is that you can input signals directly without using probes. This removes any error due to probe tolerance.

Load balance evaluation for three-phase powered equipment.
The vector display using the harmonic analysis function lets you visually know the condition of each phase in a 3-phase circuit equipment. This makes evaluation simpler than when calculations are performed manually based on numerical data.