[Paparazzi-devel] Auto Zero wiht IDG500

[Prof. Dr.-Ing. Heinrich Warmers]

Hi,
knows  someone   what is to do with the auto zero  input  of the IDG500 
rate sensor.
Let it free?  Set it to 3.V level? Connect it to an output to the micro 
controller to generate a pulse?
We saw yesterday that the measures turn left was 220 grd/s    to right  
170 grd/s and the true value  was 198 grd/s as we fixed the pin to zero.
The gain was  in a wrong range.
After let the input disconnected we notice a other gain the the values 
were 196 grd/s  and 206 grd/s.
What is the benefits of using the the auto zero feature?

Heinrich