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Meter Development

We have successfully redesigned meters to meet LBL safety requirements, approved by EH&S Electrical Safety on April 9, 2010. The production of the first 150 units was completed by April 30, 2010, with ongoing burn-in, calibration, and variability testing. We are slated to deliver 750 meters by June. The system captures metered data from laptops every 15 seconds, with detailed storage and analysis capabilities at LBNL, including automated power level identification, energy consumption metrics, and statistical distributions for comprehensive performance evaluation.

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Meter Development

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  1. Meter Development • Redesigned meters to LBL safety requirements • Approved by EH&S Electrical Safety on 9 April 2010 • Production of first 150 meters complete 30 April 2010 • Burn in, calibration, variability testing underway • 750 meters scheduled for delivery in June

  2. Example Metered Data Laptop 2 Laptop 1

  3. Example Metered Data • Sample taken every 15s • Stored to database at LBNL • Analysis tools: • Automated power level identification • Fraction of time/energy in mode • Total energy consumption • Histograms • Cumulative distributions Charging after battery powered use Idle state in new laptop

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