High and low price current probe depth measurement, the gap is more than a little parameter

In current measurement, waveform quality directly determines the direction of research and development and product reliability. Many engineers uphold the "enough" mentality, weighing between low-cost probes and high-precision testing, but ignoring the fatal defects of cheap products in high-frequency, high-current, high-precision scenarios.

The low-cost probe hides three hidden dangers: 1 temperature drift and baseline drift. Temperature changes will cause a large shift of zero point and the long-term test waveform will be out of control. The 2 is a precision "word game", the normal temperature parameters are acceptable, the precision drops sharply under extreme working conditions, and the stability of the whole temperature range is poor. The 3 is bandwidth virtual standard and phase distortion, high frequency transient measurement waveform distortion, misleading engineering design. For research and development, laboratories and other scenarios that need to produce credible data, cheap probes can not achieve measurement traceability, reproducible, but buried a huge risk.

  "ETA5301 (low price) and ETA560310U (high price) measured comparison chart"

 During the test, the difference between the waveforms generated by the two probes was visible to the naked eye. The waveform amplitude of the low-cost probe is significantly smaller than that of the high-cost probe, the high-frequency response is insufficient, and the small current measurement error soars. The ETA560310U relies on a dual-range design (30A/5A), one-key switching takes into account large current monitoring and small current analysis, and the waveform details are clear. Its Hall and transformer collaborative technology, with automatic zero function, effectively suppress baseline drift and electromagnetic interference, test repeatability and stability far more than low-cost products.

 Comparison of cheap probe and high price probe waveform

 In real research and development scenarios, cheap probes can easily cause signal misjudgment, extend the problem location cycle, and even cause design errors. The ETA560310U can completely retain the signal rising edge, peak oscillation and other key data, to achieve "what you see is true" reliable measurement.

  Physical Comparison of ETA5301 and ETA560310U Product Parameters

As a domestic high-quality probe, EY ETA560310U relies on the core technology of magnetoelectric sensing to achieve a balance between accuracy and cost, and its cost performance is better than imported products. It uses real waveforms to prove that good instruments do not pay for the parameter table, but only for the perfect match between physical reality and test results.

For R & D teams and laboratories, giving up the short-term savings of cheap probes and choosing high-precision and high-stability current probes can eliminate test bottlenecks and ensure R & D efficiency and product quality with engineering certainty.