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HOME    |    ABOUT    |    MARKETS    |    PRODUCTS    |    SUPPORT    |    CONTACT US (C) Copyright CopecoProducts 2011 Power Quality Solutions - FAQs 4. What are measurement levels 1,2,3? Measurement Level 1 – RMS values only (default in Activar). Measurement Level 2 – RMS values + THD (default in Equalizer) Measurement Level 3 – RMS values + THD + Harmonic spectrum + Waveforms. All systems can be upgraded to higher measurement level.     HOME    |    ABOUT    |    MARKETS    |    PRODUCTS    |    SUPPORT    |    CONTACT US