Tokyo Keiki TG-8000 Series, Operator'S Manual

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(2) Countermeasures when GNSS communication abnormality is generated
CAUTION
●
When an alert related to GNSS (alert code "c" or "d") is generated and the true heading
of the gyrocompass has not been determined, once turn the steering mode to
"MANUAL" or "Non Follow Up", then determine the true heading because erroneous
heading information (repeater signal and serial signal) is possible to be outputted to the
outside. Refer to "3.4.5 (2) Countermeasures when GNSS communication abnormality
is generated" in Chapter 3 Operating Method, for determination method of the true
heading.
CAUTION
●
Determination of the true heading may cause large change of the outputted heading
information. During the automatic navigation, great care should be taken because
large course change may be happened.
The true heading which is currently indicated and outputted to the external is the
corrected value based on the corrected value immediately before GNSS alert was
generated.
1. When "GNSS" is selected as the ship's speed input system, select the other
mode than "GNSS".
(Refer to "3.4.1 (7) Setting of the ship's speed input system" in this chapter.)
2. When "GNSS" is selected as the latitude input system, select the other mode
than "GNSS".
(Refer to "3.4.1 (4) Setting of the latitude input system" in this chapter.)
3. As the true heading indication is blinking showing the true heading calculated
based on the changed ship's speed and latitude, determine this true heading by
pushing ACK / ENT switch
④
.
4. The true heading indication goes lit and the true heading outputted to the external
is also determined.
(3) Countermeasures when external heading sensor related communication
abnormality is generated
CAUTION
●
When an alert related to the external heading sensor (alert code "E", "F", "L" and "n") is
generated, the heading information (repeater signal and serial signal) immediately
before the alert was generated is outputted to the outside.
Once turn the steering mode to "MANUAL" or "Non Follow Up", and then determine the
true heading.
After the true heading is determined, the heading of this system is outputted to the
outside.
CAUTION
●
Determination of the true heading may cause large change of the outputted heading
information. During the automatic navigation, great care should be taken because
large course change may be happened.