Would you PLEASE answer the questions in Post 17? Troubleshooting doesn't need to be this difficult.
If the servo shaft rotates +/- 90 degrees when connected directly to the GI650 and the skew is manually changed, I agree that the problem is not the servos.
At this point in the testing results, I would be unable to determine if the problem is the GI650, the wiring or the feedhorn.
Let's start with the questions in Post 17 then test additional hardware and functions in a flow chart from there.
In addition, does the servo motor shaft rotate +/- 90 degrees when manually adjusting the skew for both Horizontal and Vertical polarities? Or does the servo motor shaft only rotate when manually adjusting the skew on one of the polarities? If so, which polarity?
If the servo shaft rotates +/- 90 degrees when connected directly to the GI650 and the skew is manually changed, I agree that the problem is not the servos.
At this point in the testing results, I would be unable to determine if the problem is the GI650, the wiring or the feedhorn.
Let's start with the questions in Post 17 then test additional hardware and functions in a flow chart from there.
In addition, does the servo motor shaft rotate +/- 90 degrees when manually adjusting the skew for both Horizontal and Vertical polarities? Or does the servo motor shaft only rotate when manually adjusting the skew on one of the polarities? If so, which polarity?