Raytheon Anschütz AP02-S01, Manual

Page: 121 / 166

PILOTSTAR D
Autopilot
4--17
Edition: March 13, 2009
3060.DOC012
4.8 Installation of the Feedback Unit (Type 101--529)
NOTE Prior to adjustment, the autopilot is to be switched
into the STANDBY mode.
Set the steering mode selector to
MANUAL CON-
TROL .
HAND AUTO
Measuring instrument:
A commercial voltmeter is to be made available as a measuring instrument.
Pre--condition:
The feedback unit has been mounted according to Dimensional Drawing
101--529 HP006 and electrically connected (with a toothed--belt transmission, the belt
pulley is centrically to be mounted onto the rudder stock).
The casing cover is to be removed.
The connection box has been mounted according to Dimensional Drawing
102--863 HP005 and electrically connected.
4.8.1 Adjusting the Feedback Potentiometer
(See Circuit Diagram 101--529 HP007)
The feedback potentiometer (R3) is axially connected to the pulley (s. Fig. 4--1).
Pre--condition:
Set rudder to exactly midships position (0

) via manual control.
Connect the voltmeter (DC measuring range) to the following test points (TP):
TP 1

TP 2 +
The voltmeter will indicate a voltage level of b 10 V.
Balancing:
Turn the pulley until the voltmeter reads 0V.