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The Keithley 480 is an easy-to-use, sensitive picoammeter that resolves 1pA. Simple controls, LED display, shielded BNC input, high normal mode rejection, and excellent overload specifications make it easy to use. The 480 measures DC current from 1pA per digit (2nA full range) to 2mA, with 31/2-digit precision. Seven ranges cover the full span of low-current measurements. The input is simply connected to the circuit under test, the appropriate range selected, and the current is read from the four 0.5 in LED digits with appropriate decimal point and polarity indication. Decade range of 1nA to 1mA, 1 pA to 1 uA resolution, and accuracy of 0.5%. The unit measures DC current from 1pA per digit (2nA full range) to 2mA, DC voltage input 20V to 600V.
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