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ADIS16488 Datasheet(PDF) 26 Page - Analog Devices |
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ADIS16488 Datasheet(HTML) 26 Page - Analog Devices |
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26 / 36 page  ADIS16488 Data Sheet Rev. B | Page 26 of 36 BAROMETERS The BR_BIAS_HIGH register (see Table 98) and BR_BIAS_LOW register (Table 99) provide an offset control function and use the same format as the output registers, BAROM_OUT and BAROM_LOW. Table 98. BR_BIAS_HIGH (Page 2, Base Address = 0x42) Bits Description (Default = 0x0000) [15:0] Barometric pressure bias correction factor, high word Twos complement, ±1.3 bar measurement range, 0 bar = 0x0000, 1 LSB = 40 µbar Table 99. BR_BIAS_LOW (Page 2, Base Address = 0x40) Bits Description (Default = 0x0000) [15:0] Barometric pressure bias correction factor, low word Twos complement, ±1.3 bar measurement range, 0 bar = 0x0000, 1 LSB = 40 µbar ÷ 216 = ~0.00061 µbar RESTORING FACTORY CALIBRATION Turn to Page 3 (DIN = 0x8003) and set GLOB_CMD[6] = 1 (DIN = 0xA240, DIN = 0xA300) to execute the factory calibration restore function. This function resets each user calibration register to zero, resets all sensor data to 0, and automatically updates the flash memory within 72 ms. See Table 114 for more information on GLOB_CMD. POINT OF PERCUSSION ALIGNMENT CONFIG[6] offers a point of percussion alignment function that maps the accelerometer sensors to the corner of the package identified in Figure 24. To activate this feature, turn to Page 3 (DIN = 0x8003), then set CONFIG[6] = 1 (DIN = 0x8A40, DIN = 0x8B00). See Table 74 for more information on the CONFIG register. PIN 1 PIN 23 POINT OF PERCUSSION ALIGNMENT REFERENCE POINT. SEE CONFIG[6]. Figure 24. Point of Percussion Reference Point |
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