IEC 61097-6-2019 pdf free.Global maritime distress and safety system (GMDSS)-Part 6: Narrowband direct-printing telegraph equipment for the reception of navigational and meteorological warnings and urgent information to ships (NAVTEX).
The EUT shall, unless otherwise agreed, be set up by the test laboratory following instructionscontained in the userlinstallation manual. The test laboratory shall ensure that the EUT isoperating normally before testing commences.
The tests to this standard may be performed on one or more units of the EUT as agreed betweenmanufacturer and test laboratory.At least one EUT shall in addition to its normal operation beprovided with
a) a test point at the processor output to the printing device (EUTs with an lNS or printer interface shall utilize them for the tests); the level and format of the signal shall be stated bythe manufacturer;
b) suitable means to either output to the printing device or give access to examine with an external device the contents of the message storage and/or message identifier storage; themeans shall be stated by the manufacturer;
c) a method of clearing all stored messages and/or message identifiers from non-volatile memory; and
d) a method of pre-loading a message and/or message identifier file into non-volatile memory by an external device so that the non-volatile memory may be filled or nearly filled withmessages.This file shall be provided by the manufacturer and shall be referred to as the’standard test file (STF)’ in this document.
The test laboratory shall be capable of
a) generating NAVTEX transmissions,on each specified receive frequency，with all possible variations of B1 B2 B3 B4 characters in accordance with the technical format specified inITU-R Recommendation M.540. The calibrated apparatus shall also be capable ofgenerating incorrect signals,and
b) generating the standard test signals contained in 5.5 for transmission to the EUT.
No adjustments are permitted to the EUT throughout the complete test program except forremoval and application of primary power as required by the test procedures, changing of paperrolls where appropriate and changes to internal settings where required to allow the test to beconducted.
A performance test is required at various points in the test sequence.An inability to meet theperformance test or failure of any test required by the test procedure shall be considered acritical failure, and the test shall be terminated.
A performance check is required at various points in the test sequence.An inability to meet theperformance check or failure of any test required by the test procedure shall be considered acritical failure,and the test shall be terminated.
The values of all parameters of EUT conditions/states measured or observed, respectively,during each of the tests prescribed in the procedures of this standard, shall be duly recorded andsubmitted to the appropriate national authority as part of the required test approval data set.Themeasurement accuracy of each value (or set of values) shall also be reported in the test data.A completed summary of test results shall also be submitted to the appropriate nationalauthority.
Except as specified by the test procedures, opening of the unit is not allowed.
The performance test(PT) is a receiver call sensitivity test (refer to 9.1 ) with the test signal at theapplicable STS level.
A performance check(PC) is a receiver call sensitivity test (refer to 9.1) with the test signal+6 dB relative to the applicable STS level.IEC 61097-6 pdf download.