Standard and Optional Measurement Facilities Basic Configuration When purchased without options, the 1271 is an enhanced high quality DC Voltmeter. The basic configuration offers the following measurement capabilities: • Selectable 5 1/2 to full 8 1/2 digits resolution at high read rates. • DC Voltage in five ranges from lOnV to 1100V. • External trigger. • Flexible and easy to use Menu Control. • Extensive Math, Limit testing, Specification and Max/Min computations. • Selfcal internal calibration. • Autocal external calibration. • Fully IEEE-488.2 programmable. To extend its functional range beyond DC Voltage measurement, the instrument can be expanded by adding purchasable options, providing further measurement capability: 10 True RMS AC Voltage, from lOOnV to 1100V, DC and 10Hz to 1MHz, optimized for high speed. 12 True RMS AC Voltage, from lOOnV to 1100V, DC & 1 Hz to 1MHz, opumized for high accuracy. 20 2-wire and 4-wire Resistance from l^uQ to 2G£1 True Q and Low Current Q modes. 30 DC and AC Current option. (DC Current requires Option 20). (AC Current requires Options 10 or 12 and 20 ). 40 Comprehensive Ratio providing two identi­cal rear input channels, A and B. 70 Analog output. 90 Rack mounting.