Specifications

Chapter 4: Calibration

4.1 Introduction

Before using the Rudder Angle Indicator instrument for navigational purposes, it

must be aligned with the Rudder Reference Transducer to counter any offset and

ensure that the rudder position is accurately monitored.

4.2 Rudder angle offset adjustment

Rudder angle offset adjustment removes any deviation between the reading on

the ST60+ Rudder Angle Indicator display and the Rudder Reference Transducer.

To adjust for any offset, proceed as follows:

1. Center the rudder and check that the display analog pointer is within ±7° of

zero. If the analog pointer reading exceeds the limits ±7°, the Rudder Refer-

ence Transducer should be realigned in order to avoid scale inaccuracies (see

Chapter 3, Installation

2. With the rudder centered, press and hold the

set button for 2 seconds. The

instrument will emit an audible beep to indicate that you are in calibration

mode.

Note:

You can enter calibration mode only when the instrument is in master mode. If the

instrument is in repeater mode and you attempt to enter calibration mode, the instrument

will beep twice when the

set

button is released, to indicate an invalid button press.

3. Use the < (decrement) and/or > (increment) buttons to adjust the Rudder

Angle Indicator display pointer to the zero position in 1° steps, or press and

hold either

< or > for rapid change.

4. Press the

set button for 2 seconds to save the new setting and exit calibration

mode.

Note:

If, during calibration, no button is pressed for a period of 60 seconds, calibration

mode is exited without change.

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