Simrad ROBERTSON AP45 - Manual (Page 82)

Page 5-32 Robertson AP45 Autopilot
Installation
Simrad Robertson AS
Egersund - Norway
Fig. 5-38 RI9 Input signal selection
Note!
When changing from voltage to current signal (or vice versa), the indicator may
have to be recalibrated. In this case, or if the Gain and Offset trimpot’s for other
reasons are maladjusted, the following calibration procedure should be carried out:
1. Take the rudder to midship position.
2. Use trimpot “O” (R23) to calibrate RI9 to indicate zero rudder angle.
3. Move the rudder to e.g. 40 degrees (starboard or port). Use trimpot “G” (R22) to
calibrate RI9 to show the same angle as the rudder is set to (or the same angle
as shown on the autopilot display in “Debug” mode).