Nhi\u1ec1u ng\u01b0\u1eddi ngh\u0129 r\u1eb1ng thi\u1ebft b\u1ecb VHF DSC l\u00e0 \u0111\u1ec3 \u201ctrang b\u1ecb cho c\u00f3\u201d. Nh\u01b0ng th\u1ef1c t\u1ebf, hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o hi\u1ec3u bi\u1ebft v\u00e0 thao t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/strong>.<\/p>\n D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng m\u1eb9o v\u00e0 kinh nghi\u1ec7m th\u1ef1c chi\u1ebfn<\/strong> \u0111\u01b0\u1ee3c \u0111\u00fac k\u1ebft t\u1eeb ch\u00ednh c\u00e1c thuy\u1ec1n tr\u01b0\u1edfng, s\u1ef9 quan v\u00f4 tuy\u1ebfn v\u00e0 k\u1ef9 s\u01b0 h\u00e0ng h\u1ea3i \u0111\u00e3 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb n\u00e0y trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t.<\/p>\n Kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u201cb\u1ea5m n\u00fat \u0111\u1ecf\u201d. V\u1edbi thi\u1ebft b\u1ecb nh\u01b0 NVR-3000<\/strong>, n\u00fat DISTRESS c\u1ea7n \u0111\u01b0\u1ee3c nh\u1ea5n gi\u1eef > 5 gi\u00e2y, sau \u0111\u00f3 l\u1ef1a ch\u1ecdn lo\u1ea1i t\u00ecnh hu\u1ed1ng (ch\u00ecm t\u00e0u, ch\u00e1y, ng\u01b0\u1eddi r\u01a1i xu\u1ed1ng n\u01b0\u1edbc\u2026) n\u1ebfu c\u00f3 th\u1eddi gian.<\/p>\n \ud83d\udca1 M\u1eb9o:<\/p>\n Hu\u1ea5n luy\u1ec7n \u0111\u1ecbnh k\u1ef3<\/strong>: m\u00f4 ph\u1ecfng t\u00ecnh hu\u1ed1ng kh\u1ea9n c\u1ea5p v\u00e0 thao t\u00e1c th\u1eadt<\/p>\n<\/li>\n L\u00e0m quen v\u1edbi c\u00e1ch chuy\u1ec3n k\u00eanh 16 nhanh ch\u00f3ng<\/strong> sau khi g\u1eedi DSC<\/p>\n<\/li>\n D\u00e1n h\u01b0\u1edbng d\u1eabn t\u00f3m t\u1eaft ngay b\u00ean c\u1ea1nh thi\u1ebft b\u1ecb<\/p>\n<\/li>\n<\/ul>\n \ud83d\udccc Ghi nh\u1edb: N\u1ebfu kh\u00f4ng c\u00f3 t\u1ecda \u0111\u1ed9 GPS, t\u00edn hi\u1ec7u DSC s\u1ebd kh\u00f4ng mang theo v\u1ecb tr\u00ed<\/strong>, l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee9u n\u1ea1n khi s\u1eed d\u1ee5ng VHF DSC<\/p>\n M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb nh\u01b0 NVR-3000 c\u00f3 th\u1ec3 t\u00edch h\u1ee3p GPS b\u00ean trong, ho\u1eb7c cho ph\u00e9p k\u1ebft n\u1ed1i GPS ngo\u00e0i th\u00f4ng qua c\u1ed5ng NMEA 0183.<\/p>\n \ud83d\udca1 M\u1eb9o:<\/p>\n N\u1ebfu t\u00e0u c\u00f3 radar\/GPS chung, chuy\u1ec3n t\u00edn hi\u1ec7u NMEA sang thi\u1ebft b\u1ecb VHF<\/strong><\/p>\n<\/li>\n Ki\u1ec3m tra t\u00edn hi\u1ec7u GPS tr\u00ean m\u00e0n h\u00ecnh: n\u00ean hi\u1ec3n th\u1ecb LAT\/LON li\u00ean t\u1ee5c<\/p>\n<\/li>\n \u0110\u1eb7t c\u1ea3nh b\u00e1o n\u1ebfu t\u00edn hi\u1ec7u GPS m\u1ea5t (nhi\u1ec1u thi\u1ebft b\u1ecb cho ph\u00e9p c\u1ea5u h\u00ecnh)<\/p>\n<\/li>\n<\/ul>\n <\/p>\n Nhi\u1ec1u thuy\u1ec1n vi\u00ean s\u1eed d\u1ee5ng VHF DSC khi g\u1eb7p nguy c\u1ea5p<\/strong>, trong khi thi\u1ebft b\u1ecb n\u00e0y c\u00f2n h\u1ed7 tr\u1ee3:<\/p>\n G\u1ecdi c\u00e1 nh\u00e2n (Individual Call): h\u1eefu \u00edch khi li\u00ean l\u1ea1c v\u1edbi t\u00e0u g\u1ea7n, g\u1ecdi c\u1ea3ng<\/p>\n<\/li>\n G\u1ecdi nh\u00f3m (Group Call): cho \u0111\u1ed9i t\u00e0u, nh\u00f3m c\u00f4ng-te-n\u01a1\u2026<\/p>\n<\/li>\n G\u1ecdi an to\u00e0n (Safety Call): khi c\u00f3 c\u1ea3nh b\u00e1o v\u1ec1 th\u1eddi ti\u1ebft, ch\u01b0\u1edbng ng\u1ea1i\u2026<\/p>\n<\/li>\n<\/ul>\n \ud83d\udca1 M\u1eb9o:<\/p>\n C\u00e0i s\u1eb5n danh b\u1ea1 MMSI t\u00e0u th\u01b0\u1eddng xuy\u00ean li\u00ean l\u1ea1c<\/p>\n<\/li>\n D\u00f9ng t\u00ednh n\u0103ng quay l\u1ea1i (Recall) \u0111\u1ec3 xem c\u00e1c tin \u0111\u00e3 nh\u1eadn<\/p>\n<\/li>\n Thi\u1ebft b\u1ecb nh\u01b0 NVR-3000 c\u00f3 b\u1ed9 nh\u1edb l\u01b0u t\u1ed1i \u0111a 20\u201330 tin DSC g\u1ea7n nh\u1ea5t<\/p>\n<\/li>\n<\/ul>\n <\/p>\n \u0110\u1eb7c bi\u1ec7t v\u1edbi t\u00e0u \u2265 100m ho\u1eb7c c\u00f3 nhi\u1ec1u khu v\u1eadn h\u00e0nh, vi\u1ec7c m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng DSC ra nhi\u1ec1u \u0111i\u1ec3m<\/strong> l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n \ud83d\udca1 M\u1eb9o:<\/p>\n D\u00f9ng micro ph\u1ee5 g\u1eafn t\u1ea1i boong ho\u1eb7c bu\u1ed3ng tr\u1ef1c<\/p>\n<\/li>\n K\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o \u00e2m thanh ra loa PA<\/p>\n<\/li>\n N\u1ed1i thi\u1ebft b\u1ecb v\u00e0o recorder DSC \u0111\u1ec3 l\u01b0u l\u1ea1i to\u00e0n b\u1ed9 log li\u00ean l\u1ea1c<\/p>\n<\/li>\n<\/ul>\n \ud83d\udccc V\u1edbi NVR-3000, c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng qua c\u1ed5ng REMOTE MIC ho\u1eb7c AUDIO OUT.<\/p>\n Kinh nghi\u1ec7m t\u1eeb nhi\u1ec1u \u0111\u1ed9i t\u00e0u cho th\u1ea5y: thi\u1ebft b\u1ecb h\u1ecfng nh\u1eb9 th\u01b0\u1eddng ch\u1ec9 ph\u00e1t hi\u1ec7n khi… c\u1ea7n d\u00f9ng<\/strong>. Do \u0111\u00f3 c\u1ea7n:<\/p>\n Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00fat DISTRESS m\u1ed7i th\u00e1ng<\/p>\n<\/li>\n G\u1eedi tin test call (DSC test) \u0111\u1ebfn t\u00e0u kh\u00e1c<\/p>\n<\/li>\n Ghi nh\u1eadt k\u00fd test \u0111\u1ec3 l\u01b0u l\u1ea1i th\u00f4ng tin ph\u1ee5c v\u1ee5 ki\u1ec3m \u0111\u1ecbnh<\/p>\n<\/li>\n<\/ul>\n \ud83d\udca1 D\u00f9ng ch\u1ee9c n\u0103ng \u201cSELF TEST\u201d n\u1ebfu thi\u1ebft b\u1ecb c\u00f3 h\u1ed7 tr\u1ee3. NVR-3000 cho ph\u00e9p test n\u1ed9i b\u1ed9 to\u00e0n b\u1ed9 m\u1ea1ch truy\u1ec1n ph\u00e1t ch\u1ec9 trong 1 ph\u00fat.<\/p>\n\u2705 1. Hi\u1ec3u r\u00f5 ch\u1ee9c n\u0103ng g\u1ecdi c\u1ea5p c\u1ee9u \u2013 v\u00e0 luy\u1ec7n thao t\u00e1c th\u1eadt<\/strong><\/h3>\n
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\u2705 2. K\u1ebft n\u1ed1i v\u1edbi GPS \u2013 \u01b0u ti\u00ean lo\u1ea1i t\u00edch h\u1ee3p ho\u1eb7c h\u1ed7 tr\u1ee3 NMEA<\/strong><\/h3>\n
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\u2705 3. S\u1eed d\u1ee5ng g\u1ecdi c\u00e1 nh\u00e2n, g\u1ecdi nh\u00f3m, g\u1ecdi an to\u00e0n \u2013 ch\u1ee9 kh\u00f4ng ch\u1ec9 g\u1ecdi kh\u1ea9n c\u1ea5p<\/strong><\/h3>\n
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\u2705 4. K\u1ebft n\u1ed1i ph\u1ee5 ki\u1ec7n: micro ph\u1ee5, loa ngo\u00e0i, b\u00e1o \u0111\u1ed9ng ph\u00f2ng l\u00e1i<\/strong><\/h3>\n
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\u2705 5. Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3: t\u1ef1 test \u2013 kh\u00f4ng ch\u1edd \u0111\u1ebfn ng\u00e0y \u0111\u0103ng ki\u1ec3m<\/strong><\/h3>\n
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\ud83e\udded Checklist t\u1ed1i \u01b0u s\u1eed d\u1ee5ng VHF DSC<\/strong><\/h3>\n