Simrad GC80/85 Double System Controller
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988-12721-001
5 Heading information between sensors should be selected by
external serial command.
6 Physical separation in the system should be achieved in all respects
as specified.
7 Character size and other display features and indications should
meet the requirement of IEC22288.
8 Dual serial output circuits should be installed.
9 Gyrocompass should cover the performance requirement based on
the IMO performance standard up to latitude 75 deg.
The GC80/85 Double System Controller unit covers international
performance requirements (IEC61924) and notations specified by other
classification bodies.
2.2 Precautions in use
The GC80/85 Double System Controller unit displays and outputs bearing
information. Although the system continually checks for faults while the
system is running, failures or malfunctions may occur.
Any errors in input information will generate an alarm. These errors may
also cause large jumps in the output bearing from the gyrocompass. If this
happens, any external equipment depending on the bearing output from
GC80/85 Double System Controller unit should be operated manually or
switched to other bearing sensors.
To assure long time safe operation, the following precautions should be
taken:
- Assure that the operator is familiar with the use of the gyrocompass.
- Read the safety precautions in this manual.
- Perform daily checks to maintain normal system operation. Refer to
“MAINTENANCE”, page 22 onwards.
- Before taking any measures, check the navigational condition
around the vessel for safety and stop at non-dangerous sea areas.
- If any unusual behavior is observed during daily inspections, the
cause should be found and corrected. If necessary, the local Simrad
dealer should be contacted. Refer to www.navico-commercial.com
for a list of Certified Dealers and Distributors.
- If any alarm is generated, verify the reason for the alarm. Take
appropriate measures by following the directions in the alert list.
2.3 System components
The new Double system has been developed on the concept of 2 sets of
standard single gyrocompass systems having serial heading outputs with
the new system controller unit.
A GC80/85 Double System Controller unit includes the following units:
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