In one of the moog servo valve I found this sentence that
"The dither frequency depends on the electrical characteristics of the valve", I want to find a reference to this,
I wonder if you help me to ensure about that.
the moog document has been attached.

 

hi,
This link covers the operation of Moog controllers.
E
http://www.google.co.uk/url?sa=t&rc...3F01FfCRq7CpcLw&bvm=bv.84349003,d.ZGU&cad=rja