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Strange readings from gyro x axis on ADIS16405

Question asked by dotVleq0 on May 7, 2012
Latest reply on May 8, 2012 by dotVleq0

Hi, I have a question regarding an ADIS16405 that I bought new last fall and have been using for the last couple of weeks. It started out that the gyro bias on all the axes were of comparable size (< .5 deg/s) and the bias stability matched the specifications. Suddenly, however, the x axis gyro has started giving a much larger bias, sometimes well over 3 deg/s, and it is not very stable. I have attached a 3-minute plot of the x axis gyro measurement from when the sensor was just sitting on my desk. I'm pretty sure something is not right about this, so I'm wondering if it means I need to get the sensor replaced or if there might be some other explanation.