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ADIS16488A Datasheet(PDF) 27 Page - Analog Devices |
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ADIS16488A Datasheet(HTML) 27 Page - Analog Devices |
27 / 35 page ![]() Product Overview Online Documentation Design Resources Discussion Sample & Buy Data Sheet ADIS16488A Rev. C | Page 27 of 35 BAROMETERS The BR_BIAS_HIGHregister(seeTable99)andBR_BIAS_LOW register (Table 100)provide an offset control function and use the same format as the outputregisters,BAROM_OUTand BAROM_LOW. Table 99. 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 100. BR_BIAS_LOW(Page2, 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 = 0x8240, DIN=0x8300)toexecutethefactorycalibration restorefunction.Thisfunctionresets eachusercalibration register to 0, resets all sensor data to 0, and automatically updatesthe flash memory within 72 ms. SeeTable115 for moreinformation on GLOB_CMD. POINT OF PERCUSSIONALIGNMENT CONFIG[6]offersa pointofpercussion alignment function that mapstheaccelerometer sensorstothecorner of the package identified in Figure 24. To activate this feature, turn to Page3 (DIN = 0x8003), then set CONFIG[6]= 1 (DIN = 0x8A40, DIN = 0x8B00). See Table 75 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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