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The Keithley 2425 SourceMeter combines a precise, low-noise, highly stable DC power supply with a low-noise, highly repeatable, high-impedance multimeter. It has 0.012% basic accuracy with 5½-digit resolution. At 5½ digits, the SourceMeter delivers 520 readings/second over the IEEE-488 bus. At 4½ digits, it can read up to 2000 readings/second into its internal buffer. The unit has broad source and measurement ranges: Source voltage from 5µV to 105V; measure voltage from 1µV to 105V. Capabilities. Source DC or pulse voltage from 5µV to 105V; measure voltage from 1µV to 105.5V. Source DC current from 500pA to 3.15A; measure DC current from 100pA to 3.165A. Source pulse current from 500pA to 10.5A. Measure resistance from 10µohm (<10µohm in manual ohms) to 21.1Mohm. Maximum DC source power is 110W. Concurrent measurements of all three functions over the remote interface. Source-measure sweep capabilities (linear and logarithmic staircase sweeps, source sweep list of up to 2500 points, memory sweep of up to 100 instrument setups). 6-wire ohm measurement with programmable I-source or V-source with V or I clamp. 4-quadrant source and sink operation. Up to 12 stages of limit testing with a built-in comparator for pass/fail testing. Digital I/O for stand-alone binning operations or interface to component handler. Programming language and remote interfaces. The SourceMeter uses the SCPI programming language and two remote interface ports (IEEE-488/GPIB and RS-232C).
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