XS series operating manualXS user manual v0.55 - 21 -Detection of capacitive samplesBefore starting a test, it is possible to detect whether the sample is properly connected to the unit or not.This is possible provided that the sample to test has a capacitive value of at least 10nF. If the detectionis activated, a pulse of 100V magnitude and of 1s duration is generated, right before the hipot test starts.The capacity value is deduced from the current measured during this pulse. If the capacity valuededuced is high enough, the sample is considered detected and the test continues. Otherwise, the test isstopped, and the hipot voltage is not generated.By default, the detection threshold is set to 10nF. When the EXPERT mode is activated, it is possible toconfigure this detection threshold between 5nF and 10nF by 1nF steps and between 10nF and 1000nFby 10nF steps.Precision on the detection threshold : ±40%Ex: To detect samples of at least 10nF capacitive value, a threshold of at least 10nF(1-40%)=5nF shouldbe set to ensure that the absence/presence of the sample will be detected every time. Likewise, adetection threshold of 10nF ensures the detection of absence/presence of samples with capacitivevalues of at least 10nF/(60%) = 17nF.
