Dual Gyro Interface For Dnv Naut-Aw - Furuno FEA-2107 Operator's Manual

Electronic chart display and information system (ecdis)

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Dual Gyro Interface for DNV NAUT-AW

DNV NAUT-AW requires dual gyro interface for a track control system, which consists of the ECDIS and a

Trackpilot. The benefit of this arrangement is that loss of a single gyro does not interrupt track control. The track

control system can continue smoothly with a backup gyro.

Dual gyro interface is accomplished by connecting two gyros (Gyro 1 and Gyro 2) directly to the Trackpilot. A

selection switch (first priority Gyro selector) is used to choose heading source for Trackpilot, ECDIS and common

gyro distribution unit. The ECDIS indicates the state of "First priority Gyro Choose selector" switch on the

Speed/Course page of the Sensors dialog box, with the text indication "active" or "backup" in the Gyro 1 or Gyro 2

Smoothing is added for smooth transition (i.e., without unexpected large rudder movements) from one gyro source

to another gyro source. This smoothing is used both for user requested changes (i.e., user change position of "First

priority Gyro Choose selector") and for automatic changes (i.e., automatic continuation with backup source).

First priority

Gyro selector

Gyro 2 through Trackpilot

Distribution

Unit for Gyro

(Selected gyro

(Gyro 1 or Gyro 2)

Gyro data distribution for track control system

IEC-61162-1 ($XxHDT)

Stepper/Synchro

19. Navigation Sensors

Fea-2107-bb Fea-2807