ADIS16480SLASHPCBZ datasheet(33/40 Pages) AD

33 / 40 page

Data Sheet

ADIS16480

Rev. 0 | Page 33 of 40

BAROMETERS

The BR_BIAS_HIGH register (see Table 130) and

BR_BIAS_LOW register (Table 131) provide an offset

control function and use the same format as the output

registers, BAROM_OUT and BAROM_LOW.

Table 130. 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 131. 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 = 0x8240, DIN = 0x8300) 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 146 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 25. To activate this feature, turn to Page 3

(DIN = 0x8003), then set CONFIG[6] = 1 (DIN = 0x8A40,

DIN = 0x8B00). See Table 106 for more information on the

CONFIG register.

PIN 1

PIN 23

POINT OF PERCUSSION

ALIGNMENT REFERENCE POINT.

SEE CONFIG[6].

Figure 25. Point of Percussion Reference Point

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