Comparison table by model Model number B2901B Number of channels 1 or 2 Output range Max. voltage 210 V Max. current (DC) 3.03 A Max. current (Pulse) 10.5 A Source resolution Digit 5.5 digit Min. voltage 1 μV Min. current 1 pA Lowest current range 100 nA Measurement resolution Digit  6.5 digit Min. voltage 100 nV Min. current 100 fA Min. trigger interval 20 μs Max. trigger count  Infinite Max. data buffer size100,000 Limit test Yes Fast transient mode Yes Easy file access  Yes View mode Single view Yes Dual view Yes (B2902B) Graph view Yes Roll view No