Errors in ADIS16488

Hi again, NevadaMark

In our project we can generate a case, when we see simultaniously tree errors in the ErrorStatus register of ADIS16488: SPI, overrange and self-test. We can say, that this result is repeatable and we achieve every time we reconstruct these conditions. These conditions include active angular vibrations around one of the axes. Additionally we can definetely say, that we don't perform self-test at this time.

So the question is the following: is it possible that these errrors really occur at the same time, or we have an SPI problem and just read some wrong data? And how the sensor behaves if an overrange error occurs? Will its functionality degrade somehow or it fully restores as soon as the measured parameters return within allowed range?

Thank you for your assistance in advance

UPDATE: When the error occurs none registers (including Product_ID) cannot be read properly, so I cannot be sure which error it is. However, the SPI flag occurs with more often than other. It also seems, that the sensor can receive some commands, as software reset and reinitialization bring it back to life.

Any ideas about the error? Is thee an easier way to recover than the reset?

  • It would appear like basic function cannot be verified, since the PROD_ID is not reading correctly during these conditions. Without a better understanding of the conditions, it is hard to narrow down most likely causes.  I would start with basics: connection?  What does the current going in to the device look like during these conditions? Are you able to quantify the inertial conditions through a reference sensor?

  • Finally we foound out that the problem was connected with an electromagnetic impulse, probably affecting the SPI line. But still I cannot understand, why the sensor could not resume to the operational state. Anyway, Thanks for your help.

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