The Model 8600A is a compact and light-weight digital multimeter (DMM). It features a 4% digit display, push-button selection of range and function, auto polarity, self locating decimal point, self zeroing to eliminate offset uncertainties, and overload protection for all ranges. Autoranging can be selected when the ac volts, dc volts or kiloohms functions are selected. Several options and accessories for the 8600A are available (see Section 6). Push-button controls allow the selection of five ac and dc voltage ranges, five ac and dc current ranges, and six resistance ranges. The measurement capabilities of the 8600A range from 10 microvolts to 1199.9 volts ac and dc, 10 nanoamperes to 1.9999 amperes ac and dc, and 10 milliohms to 19.999 megohms. The front-panel readout features a 4% digit display using light emitting diodes (LED’s). The display includes a self locating decimal point and a + or - polarity indicator. Full-scale readout is 19999 for all ranges and functions except the 1200 volt ac and dc range, which is 11999. A blinking 18888 readout indicates that the 8600A is being operated in an overload condition and provides a test for all segments in the display. Front panel input connectors are banana type and provide separate connections for current, and volt-ohm inputs. Both the current and volt-ohm inputs are referenced to a common input which is isolated from earth ground and can operate at a potential of up to ±1000V dc or peak V ac with reference to earth ground. The overload features of the 8600A include a fused current input and an overvoltage protected volt-ohm input. This protection applies for any function and range selected. 1-7. Several options and accessories are available for use with the 8600A.