FTR-01H series portable digital fault recorder and analysis system which has been ... 40-60Hz, 25°C: 0.5%Test function: Generator unloaded test, Generator short circuit test, Excitation unloaded test, Magnet lost test ... 8 Analogue input channels of mutual AC/DC (4 channels per group), one adapter for one group.2 ... channel: 64(total), 16 channel per group, with power supply or none.According to customer