3.4 Harmonic Analysis Output Quantities
All Metrology 32-bit harmonic analysis output quantities are prefixed “Metrology_Har_Out_”. The start address is 0x20088338. The Metrology module generates the following primary output measurement quantities for each measurement interval, per-phase quantities with each phase designated by the subscript “_x” (where x = [A, B, C] for voltage channels and x = [A, B, C, N] for current channels).
Internal scaling allows accurate harmonic analysis for integration periods of up to 16 seconds for up to full-scale magnitude input waveforms.
| Register Offset | Name | Access Mode | Name | Format | Num Bytes | Min Value | Max Value | Default | Units |
|---|---|---|---|---|---|---|---|---|---|
| 0 | I_A_m_R | R | The real part of DFT result for current, phase A, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 31 | V_A_m_R | R | The real part of DFT result for voltage, phase A, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 62 | I_B_m_R | R | The real part of DFT result for current, phase B, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 93 | V_B_m_R | R | The real part of DFT result for voltage, phase B, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 124 | I_C_m_R | R | The real part of DFT result for current, phase C, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 155 | V_C_m_R | R | The real part of DFT result for voltage, phase C, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 186 | I_N_m_R | R | The real part of DFT result for current, phase N (neutral), m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 217 | I_A_m_I | R | The imaginary part of DFT result for current, phase A, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 248 | V_A_m_I | R | The imaginary part of DFT result for voltage, phase A, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 279 | I_B_m_I | R | The imaginary part of DFT result for current, phase B, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 310 | V_B_m_I | R | The imaginary part of DFT result for voltage, phase B, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 341 | I_C_m_I | R | The imaginary part of DFT result for current, phase C, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |
| 372 | V_C_m_I | R | The imaginary part of DFT result for voltage, phase C, m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Volt samp scaled |
| 403 | I_N_m_I | R | The imaginary part of DFT result for current, phase N (neutral), m-th harmonics (from m=1 to m=31) | sQ13.18 | 31*4 | - | - | - | Amp samp scaled |