Yokogawa
Isolation and power modules target AI and e-mobility
Yokogawa Test & Measurement has introduced two new modules for data acquisition systems: the 720252 isolation module and the 720301 power measurement module. Both address validation and measurement tasks in applications such as e-mobility, energy storage, and AI infrastructure.
The 720252 isolation module operates at 1 MS/s with 16-bit resolution and extends the DC offset adjustment range compared to conventional oscilloscopes. This enables precise measurement of very small voltage and current variations, for example in battery cells or sensor signals.
Its offset function compensates a wide range of DC bias components, including battery voltage and DC current. At the same time, the module allows simultaneous observation of DC levels and superimposed small-signal fluctuations down to 1 mV/div.
For low-frequency analysis, the offset function features a steep roll-off characteristic, enabling the capture of variations in the 0 to 10 Hz range. A high input impedance (>1 GΩ) further reduces the measurement impact on devices with very low internal resistance.
The module is compatible with the ScopeCorder series SL2000, DL950, and DL350.
Power measurement with guaranteed DC/AC waveform accuracy
The 720301 power measurement module combines voltage and current inputs in a single unit, reducing setup complexity. It measures voltage and current waveforms with guaranteed DC/AC waveform accuracy and integrates with the power analysis functions of the DL950 and SL2000 systems.
It supports user-defined measurement intervals starting at 0.1 ms as well as cycle-by-cycle power calculations. In addition, trigger functions based on power parameters and harmonic components are available.
Beyond electrical signals, the module enables synchronized acquisition of additional parameters such as temperature, strain, acceleration, and acoustic signals. It also supports integration with in-vehicle communication protocols including CAN-FD, LIN, and SENT.
Requirements driven by energy and AI applications
The expansion of energy storage systems—from EV batteries to UPS installations in data centers—increases the demand for precise validation methods. Applications in AI systems and data centers require the analysis of small fluctuations superimposed on DC signals as well as accurate power measurements.
The 720252 supports high-resolution fluctuation analysis in battery cells with typical voltages around 4.2 V while minimizing measurement impact on cells with very low internal resistance. The 720301 addresses accurate power measurement in high-speed data acquisition environments, for example in transient analysis of electric drives or load variations in UPS systems.
Typical applications
Typical use cases for the 720252 include fluctuation analysis in EV battery cells, low-frequency signal analysis in AI systems and power supplies, and measurements in R&D and quality control.
The 720301 is used for transient analysis in electric drives and backup power systems. It also enables synchronized acquisition of power and multi-domain signals as well as the analysis of load fluctuations in UPS and emergency power applications.
