The following is said about IIM-46234: "The performance of the thermal related specification was improved by performing custom thermal calibration for every module in the temperature range (-40 to 85°C)."
I understand this means that the thermal bias is achieved to be 0 when the sensor is at 25 ºC.
Are the measured biased (in the temperature range -40 to +85ºC) provided to the user along with the unit, for each bought unit?
(that info, if provided, can be used by the user to compensate the bias with the measured temperature for the IIM-46234)
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Hello,
To temperature compensate an IMU, you need to measure the offset at three different temperature points: cold, room temperature, and hot. At each of these points, the offset is recorded, and the slope of the offset versus temperature is determined. This slope is then saved in IIM-46234 and used to adjust the readings based on the current temperature of IIM-46234. Since the compensation is already performed within IIM-46234 itself, we don't provide that info.
Dear MOD_Mustafa
Thank you very much for the provided response.
However, I think some information is still missing for me. The document DS-000300-IIM-46234 is showing internal registers, where the user can introduce values for external measured bias and external measured misalignment. See Section 7.16 (for instance, point 8 in pages 52 and 53). The correction applied internally by the unit is (or seems to be) adding a fixed value for the bias (or offset) and a fixed value for the misalignment.
I have not found any register in which I can include coefficients of bias as function of temperature.
Can you please clarify what are those parameters to be loaded (or where are they reported)?
Do you confirm that the parameter values related to the bias vs temperature for a specific unit IIM-46234 are to be loaded by the user?
Said differently: Are those parameter values related to the bias vs temperature loaded within the unit IIM-46234 in the factory, before the unit is sold and provided to us?
Regards
Alfredo