ADC Delay Tuning Sweep

Servosila SC-120 servo drives come with an ADC Delay Tuning function designed to enhance ADC performance.

The raw chart of un-filtered ADC data illustrates that the noise in measurements of motor phase currents is significantly dependent on ADC timing.

If ADC sampling is initiated prematurely relative to the servo drive's switching pulse, MOSFET ringing and amplifier settling become pronounced, as observed at the beginning of the chart.

Conversely, if ADC sampling is initiated too late, the sampling process extends to the end of the low-side pulse, resulting in outright data corruption, as observed at the end of the chart.

The optimal "quiet zone" is situated between these extremes. The ADC Delay Tuning function identifies this most optimal sampling point.