2286A Data Logging System: Measures up to 100 channels per mainframe (expandable to 1,500 channels). DC voltage and current, AC voltage, resistance, frequency, thermocouples, RTDs, strain gauges, and event-totalizing. Employs pseudo-channel and math function capabilities. 3.5-inch disk drive for data and program storage. Data output to 40-column internal printer, RS-232C, or disk drive. Fluke's most powerful stand-alone data logger, expandable to 1500 channels. Precision measurements on a wide variety of inputs. 3.5" floppy drive, MS-DOS compatable and pseudo-channels provide computing power without writing software. 12 volt operat.