P
Peter
Hi,
I am trying to find out the signals used by the KFC225 roll servo. The
generic part number is KS0271C. Most of the pins are pretty obvious
from their names. I have a schematic showing the connections between
the autopilot and the servo itself, but for example I don't fully
understand the functions of the "input" and "input reference" inputs -
presumably it is some kind of a differential input, but I don't know
what the specs on the voltage swings is. Also there are some error
signals which go back to the computer.
The really puzzling thing is that during certain times at the power-up
self test, and at all times afterwards, there is a 1.4kHz sinewave of
about 100mV P-P superimposed onto the DC voltage on the "input" signal
(the "reference" signal is clean though). I don't know if this is a
fault of the computer, or whether it is intentional.
Would anyone familiar with the basic principles of autopilots be able
to shine any light on this?
I would like to know this because I am trying to repair one whose
power amp has burnt out, to keep as a standby.
Peter.
I am trying to find out the signals used by the KFC225 roll servo. The
generic part number is KS0271C. Most of the pins are pretty obvious
from their names. I have a schematic showing the connections between
the autopilot and the servo itself, but for example I don't fully
understand the functions of the "input" and "input reference" inputs -
presumably it is some kind of a differential input, but I don't know
what the specs on the voltage swings is. Also there are some error
signals which go back to the computer.
The really puzzling thing is that during certain times at the power-up
self test, and at all times afterwards, there is a 1.4kHz sinewave of
about 100mV P-P superimposed onto the DC voltage on the "input" signal
(the "reference" signal is clean though). I don't know if this is a
fault of the computer, or whether it is intentional.
Would anyone familiar with the basic principles of autopilots be able
to shine any light on this?
I would like to know this because I am trying to repair one whose
power amp has burnt out, to keep as a standby.
Peter.
