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Source Measure Unit — Simultaneously generates and measures voltage or current with high accuracy. Distinct from power supplies: SMUs engineered for precision characterization, not continuous power delivery. Extensive experience with Keithley 2410 (€15k) warrants strong recommendation. Keithley 2470 provides more economical alternative (€12k). Keithley's Low Level Measurements Handbook (complimentary PDF) constitutes mandatory reading for precision electrical measurements.
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Words versus actions