1-2. The Model 8000A is a compact and light-weight digital multimeter (DMM). It features a 3Vz 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. Several options and Accessories are also available for use with the 8000A, 1 -3. 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 8000A range from 100 microvolts to 1199 volts ac and dc, 100 nanoamperes to 1.999 amperes ac and dc, and 100 milliohms to 19.99 megohms. 14. The front-panel readout features a 3lA 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 1999 for all ranges and functions except the 1200 volt ac and dc range, which is 1199. A blinking full-scale readout indicates that the 8000A is being operated in an overrange condition. 1-5. Front panel input connectors are banana type and provide separate connections for common, current, and volt-ohm inputs. Both the current and volt-ohm inputs are referenced to the common input. Common is isolated from earth ground and can operate at a potential of up to ± 1.200 volts peak with reference to earth ground. 1-6. The overload features of the 8000A 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 8000A, The options are listed and described in Table 1-1, and option compatibility is defined in Table 1-2. Desired options must be specified at time of purchase. The Accessories are listed and described in Table 1-3. Accessories are compatible with all options and can be ordered at time of purchase or after purchase. Detailed information concerning each option and accessory is given in Section 6 of this manual. 1-8. Input power for the 8000A is available in one-of- three versions. These are: 100 volts, 50 to 400 Hz; 115 volts, 50 to 400 Hz; and 230 volts, 50 to 400 Hz. The desired version must be specified at the time of purchase. Overall operation of the 8000A is the same for all versions of input power.