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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MAXQ3183-RAN+ датащи(PDF) 79 Page - Maxim Integrated Products |
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MAXQ3183-RAN+ датащи(HTML) 79 Page - Maxim Integrated Products |
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79 / 102 page  Low-Power, Multifunction, Polyphase AFE with Harmonics and Tamper Detect ______________________________________________________________________________________ 79 Number of Scan Frames per DSP Cycle (NS) (0x040) The NS register defines the fundamental timing for the electricity meter. It defines a DSP cycle in terms the period of the ADC scan frame. Generally, this register is calculated and updated automatically by the MAXQ3183 firmware based on the zero-crossing detection, and whether noise rejection (REJ_NS) and averaging (AVG_NS) are enabled. Host code can write to this register in order to set the desired DSP cycle duration. The duration of one scan frame (tFR) is represented as 0x00010000. Filter Coefficients Line Cycle Noise Rejection Filter (REJ_NS) (0x02C) This register establishes the sensitivity of the NS rejection filter setting. NS is a measure of the line frequency. If a line cycle occurs that is shorter or longer than the line cycle represented in the NS register, this filter determines whether the cycle is used to update the NS value. For more information, see the NS register description. If this register is zero, noise rejection is disabled for the line cycle counter. Bit: 15 14 13 12 11 10 9 8 Name: Line Cycle Noise Rejection Filter High Byte Reset: 0x00 Bit: 7 6 5 4 3 2 1 0 Name: Line Cycle Noise Rejection Filter Low Byte Reset: 0xC8 Bit: 31 30 29 28 27 26 25 24 Name: Integer Portion, High Byte Reset: 0x03 Bit: 23 22 21 20 19 18 17 16 Name: Integer Portion, Low Byte Reset: 0x28 Bit: 15 14 13 12 11 10 9 8 Name: Fractional Portion, High Byte Reset: 0x00 Bit: 7 6 5 4 3 2 1 0 Name: Fractional Portion, Low Byte Reset: 0x00 |
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