Tổng quan hệ thống GMDSS phục vụ TKCN. Năm 1979,Tổ chức Hàng Hải quốc tế (International Maritime Organization IMO) đã tổ chức hội nghị về vấn đề tìm kiếm và cứu nạn trên biển. ... Hệ thống mới được tự động hóa và sử dụng sóng vô tuyến trái đất và vệ tinh cho báo động cấp cứu và các thông tin theo sa
Trang 1Cau hoi When an external MF DSC test is carried out, a fault condition is displayed on the
transmitter Immediate action should be taken to
A isolate the antenna and retest
B check the location of MF transmitter fuses in the operational manual
C consult the fault finding guide in the operational manual
D carry out an internal DSC test as per the operational manual
Cau hoi DSC equipment operating on VHF Ch.70 should be tested
A daily by means of a test call with a coast station
B weekly by means of an internal test
C weekly by means of a test call with a coast station
D daily by means of an internal test
Cau hoi EPIRBs should be checked and tested
Cau hoi An on-load test of the radio batteries can be done by operating the transmitter on
full power and with the battery charger
A on while observing the discharge current
B off while observing the battery voltmeter
C off while observing the discharge current
D on while observing the battery voltmeter
Cau hoi A full specific gravity check of a liquid lead acid battery should be carried out
D once per international voyage
Cau hoi When making RT test signals for transmitter adjustment, the call should include
A the position of the station making the test
B an indication of the mode of emission being used
C an indication of the frequency to be used
D the identification of the station making the test
Cau hoi At least once per month a test should be carried out to check
A the correct functioning of the NAVTEX receiver
B each SART for signs of damage
C the reserve source of energy, when it is not a battery
D that each printer has an adequate supply of paper
Cau hoi The following equipment should be tested at least once a month
A SART, EPIRB and handheld VHF sets
Trang 2B operation of 2182 kHz receiver
C each printer for adequate paper
D reserve source of energy if it is not a battery
Cau hoi The following equipment should be tested at least once a week
A SART, EPIRB and handheld VHF sets
B reserve source of energy if it is not a battery
C operation of 2182 kHz receiver
D each printer for adequate paper
Cau hoi EPIRBs should be tested without using the satellite system at intervals not to exceed
once a
Cau hoi MF DSC equipment should be tested
A monthly, by means provided by the equipment
B weekly, by contacting a coast station
C weekly, by means of an internal test
D monthly, by contacting a coast station
Cau hoi The battery voltage of the GMDSS radio installation should be checked
C at start of voyage only
Cau hoi The print out of a Navtex self test shows a signal test pass but a noise test fail
Immediate action should be taken to
A check that the receiver is set up to receive the correct message types
B consult the fault finding guide in the operational manual
C check the amplifier fuses
D check receiver is set up to receive stations for your area
Cau hoi The following equipment should be tested at least once a month and details entered
into radio log
A SART, EPIRB and handheld VHF sets
B reserve source of energy if not a battery
C each printer for adequate paper