Sperry Marine Visionmaster FT ECDIS, User Manual

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ECDIS User Guide Navigation Tools
65900012 6-5
Sensor Data Sources
Heading Source Values
The Heading folder is divided into two areas;
Sensors and Alignment.
The Sensors area lists the available heading
sensor sources with the active sensor source
and its current value in highlight.
The Alignment area shows alignment information
applicable to each of the alignable heading
sensors in the system. The Value field enables
the operator to align a heading sensor prior to
selecting it.
Sensors
The system supports the acquisition of analogue heading data via synchro
and stepper interfaces and serial heading data via a serial port on the
PCIO. The Sensors area may display the analogue data (Gyro) and the
serial data (HDT - true heading) and will allow selection between the two
data values.
If the heading data becomes invalid while the ECDIS is in Course Up mode
the presentation mode will switch to North Up after 30 seconds.
To change the Heading sensor source, do the following :
1. Tick the button next to the source. Whenever the sensor source is
about to be changed a window prompts you to confirm the change.
2. To confirm click the Yes button, or to return to the existing sensor
source and value click the No button.
3. Where the sensor is changed the heading values shown against
the selected sensor source are applied. The HDG readout shown
in the Indicator Display and the ship's heading marker also change
to reflect the new sensor value.