Consilium SELUX ST, Installation And Service Manual

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INSTALLATION AND SETTING
1.11 Rev. E
1.6 Serial Gyro
A Standard or Fast NMEA Gyro can be connected on Alpha PCB TB9
Connect it according the guidelines defined in Chapter 2 Serial Interfaces.
1.7 Speed LOG
In case of analogue signal the speed log is connected to TB14 on the Alpha
PCB. There are several connections depending on the type of log installed.
Most of the single axis analogue speed logs are shorting-type (relays contact),
in this case the signal shall be connected between PIT and GND on TB14.
In case of NMEA signal the speed log also can be connected to Alpha PCB
input TB2.See the serial interface chapter for accepted sentences.
WARNING
THE HEADING SENSOR, A GYRO EQUIPMENT OR EQUIVALENT, SHOULD
BE ABLE TO SUSTAIN A RATE OF TURN UP TO 20°/S ACCORDING TO
IMO RESOLUTION MSC.192(79) AND MSC.116(73) FOR THD DEVICES.
IF THE INTERFACE IS ANALOGUE THE MINIMUM TURN RATE SHOULD
BE 12°/S.
FOR A DIGITAL INTERFACE THE HEADING REFRESH SHOULD BE MORE
THAN 20HZ, UP TO 50HZ.
IF THE GYRO UPDATE RATE IS UNDER THE PREVIOUS STATED VALUES
THE TRACKING PERFORMANCE CAN BE SERIOUSLY DEGRADED WITH
INCREASING ERRORS ON TARGET VECTOR DURING THE OWN SHIP
CHANGE OF COURSE.