We found that the new moog valve installed in Frame5 GT with MarkVie control was showing more than 5% difference in feed back and command in the lower side.
Tried to adjust null bias current. but it has to be increased to 5.5 % to get the feed back and command nearly equal.
So we tried to adjust the mechanical null bias screw very slightly CCW direction after keeping the valve in 25% open position. Position and feed back become normal. Null bias current is kept as before 1.94 %. We started the unit and found normal.
I read in this forum that it is not advisable to adjust mechanical null bias??? Please comment.
Tried to adjust null bias current. but it has to be increased to 5.5 % to get the feed back and command nearly equal.
So we tried to adjust the mechanical null bias screw very slightly CCW direction after keeping the valve in 25% open position. Position and feed back become normal. Null bias current is kept as before 1.94 %. We started the unit and found normal.
I read in this forum that it is not advisable to adjust mechanical null bias??? Please comment.