{"id":1343,"date":"2025-12-18T02:43:05","date_gmt":"2025-12-18T02:43:05","guid":{"rendered":"https:\/\/www.cxjsmartcard.com\/?p=1343"},"modified":"2025-12-18T02:47:33","modified_gmt":"2025-12-18T02:47:33","slug":"troubleshooting-rfid-access-cards-what-to-do-when-read-range-drops","status":"publish","type":"post","link":"https:\/\/www.cxjsmartcard.com\/vi\/troubleshooting-rfid-access-cards-what-to-do-when-read-range-drops\/","title":{"rendered":"Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u1ebb truy c\u1eadp RFID: Ph\u1ea3i l\u00e0m g\u00ec khi ph\u1ea1m vi \u0111\u1ecdc gi\u1ea3m?"},"content":{"rendered":"<p>M\u00e1y \u0111\u1ecdc th\u1ebb ki\u1ec3m so\u00e1t ra v\u00e0o c\u1ee7a b\u1ea1n tr\u01b0\u1edbc \u0111\u00e2y nh\u1eadn di\u1ec7n th\u1ebb r\u1ea5t d\u1ec5 d\u00e0ng. Gi\u1edd \u0111\u00e2y, m\u1ecdi ng\u01b0\u1eddi ph\u1ea3i &quot;\u00e1p s\u00e1t&quot; th\u1ebb v\u00e0o m\u00e1y \u0111\u1ecdc. K\u1ebft qu\u1ea3 l\u00e0 c\u00f3 h\u00e0ng d\u00e0i ng\u01b0\u1eddi x\u1ebfp h\u00e0ng, nh\u1eefng cu\u1ed9c g\u1ecdi ph\u00e0n n\u00e0n v\u00e0 ph\u1ea3i \u0111i\u1ec1u \u0111\u1ed9ng th\u00eam nh\u00e2n vi\u00ean. C\u1ea3m gi\u00e1c nh\u01b0 \u0111\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1ebb, nh\u01b0ng ph\u1ea7n l\u1edbn th\u1eddi gian \u0111\u00f3 l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1... <strong>s\u1ef1 c\u1ed1 h\u1ec7 th\u1ed1ng<\/strong>\u2014C\u00f3 \u0111i\u1ec1u g\u00ec \u0111\u00f3 \u0111\u00e3 thay \u0111\u1ed5i trong chu\u1ed7i RF.<\/p>\n\n\n\n<p>T\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 gi\u1ea3m ph\u1ea1m vi \u0111\u1ecdc RFID m\u1ed9t c\u00e1ch th\u1ef1c t\u1ebf v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n. T\u00f4i s\u1ebd n\u00f3i th\u1eb3ng th\u1eafn: ki\u1ec3m tra nhanh tr\u01b0\u1edbc, s\u1eeda ch\u1eefa s\u00e2u h\u01a1n sau. V\u00e0 t\u00f4i s\u1ebd li\u00ean h\u1ec7 \u0111i\u1ec1u n\u00e0y v\u1edbi nh\u1eefng g\u00ec b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i trong c\u1ea5u h\u00ecnh l\u1ea7n sau \u0111\u1ec3 v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1 kh\u00f4ng ti\u1ebfp di\u1ec5n.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n \u0111ang thu th\u1eadp ch\u1ee9ng ch\u1ec9 v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, <strong>Th\u1ebb th\u00f4ng minh CXJ<\/strong> x\u00e2y d\u1ef1ng tr\u1ef1c ti\u1ebfp t\u1eeb nh\u00e0 m\u00e1y <strong>S\u1ea3n xu\u1ea5t theo \u0111\u01a1n \u0111\u1eb7t h\u00e0ng (OEM\/ODM) th\u1ebb RFID, th\u1ebb nh\u1eadn d\u1ea1ng, v\u00f2ng \u0111eo tay, nh\u00e3n v\u00e0 mi\u1ebfng d\u00e1n RFID.<\/strong>, Th\u00eam v\u00e0o \u0111\u00f3 l\u00e0 m\u00e3 h\u00f3a v\u00e0 c\u00e1 nh\u00e2n h\u00f3a. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng v\u00ec m\u1ed9t l\u00f4 d\u1eef li\u1ec7u s\u1ea1ch c\u1ed9ng v\u1edbi d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh s\u1ebd gi\u00fap b\u1ea1n tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng l\u1ed7i &quot;ng\u1eabu nhi\u00ean&quot; sau n\u00e0y.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.cxjsmartcard.com\/vi\/\">Nh\u00e0 s\u1ea3n xu\u1ea5t RFID t\u00f9y ch\u1ec9nh | Th\u1ebb OEM\/ODM, Th\u1ebb &amp; V\u00f2ng \u0111eo tay<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-e5257fd\" id=\"gspb_image-id-gsbp-e5257fd\"><img decoding=\"async\" src=\"https:\/\/www.cxjsmartcard.com\/wp-content\/uploads\/2025\/12\/Troubleshooting-RFID-Access-Cards-What-to-Do-When-Read-Range-Drops-4.webp\" data-src=\"\" alt=\"\" loading=\"lazy\" width=\"676\" height=\"676\"\/><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"rfid-read-range-drops-quick-triage-for-access-control\">Ph\u1ea1m vi \u0111\u1ecdc RFID gi\u1ea3m: c\u1ea7n nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n \u0111\u1ec3 ki\u1ec3m so\u00e1t truy c\u1eadp.<\/h2>\n\n\n\n<p>Tr\u01b0\u1edbc khi \u0111i\u1ec1u ch\u1ec9nh b\u1ea5t k\u1ef3 c\u00e0i \u0111\u1eb7t n\u00e0o, h\u00e3y th\u1ef1c hi\u1ec7n ba thao t\u00e1c n\u00e0y. Ch\u00fang h\u1ea7u nh\u01b0 kh\u00f4ng t\u1ed1n k\u00e9m v\u00e0 gi\u00fap nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh l\u1ed7i.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ki\u1ec3m tra b\u1eb1ng th\u00f4ng tin x\u00e1c th\u1ef1c \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn l\u00e0 h\u1ee3p l\u1ec7.<\/strong><br>H\u00e3y l\u1ea5y m\u1ed9t th\u1ebb nh\u00e2n vi\u00ean m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y v\u1eabn ho\u1ea1t \u0111\u1ed9ng t\u1ed1t. N\u1ebfu th\u1ebb \u0111\u00f3 c\u0169ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, \u0111\u1eebng \u0111\u1ed5 l\u1ed7i cho th\u1ebb ng\u01b0\u1eddi d\u00f9ng n\u1eefa. V\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 n\u1eb1m \u1edf \u0111\u1ea7u \u0111\u1ecdc th\u1ebb.<\/li>\n\n\n\n<li><strong>H\u00e3y th\u1eed nghi\u1ec7m c\u00f9ng m\u1ed9t th\u1ebb nh\u1eadn d\u1ea1ng tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ecdc th\u1ebb kh\u00e1c.<\/strong><br>N\u1ebfu n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf n\u01a1i kh\u00e1c, v\u1ea5n \u0111\u1ec1 c\u1ee7a b\u1ea1n n\u1eb1m \u1edf c\u1ee5c b\u1ed9: m\u00f4i tr\u01b0\u1eddng, c\u00e1ch l\u1eafp \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a c\u00e1nh c\u1eeda \u0111\u00f3.<\/li>\n\n\n\n<li><strong>X\u00e1c nh\u1eadn lo\u1ea1i t\u1ea7n s\u1ed1 RFID (LF, HF\/NFC, UHF)<\/strong><br>T\u1ea7n s\u1ed1 th\u1ea5p (LF, 125 kHz) v\u00e0 t\u1ea7n s\u1ed1 cao\/NFC (HF\/NFC, 13,56 MHz) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t truy c\u1eadp. T\u1ea7n s\u1ed1 si\u00eau cao (UHF) c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc xa h\u01a1n, nh\u01b0ng ch\u1ec9 khi to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho UHF. \u0110\u1eebng mong \u0111\u1ee3i h\u1ec7 th\u1ed1ng ch\u1ea1m th\u1ebb ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ed5ng ki\u1ec3m so\u00e1t t\u1ea7m xa. \u0110\u1ecbnh lu\u1eadt v\u1eadt l\u00fd kh\u00f4ng quan t\u00e2m \u0111\u1ebfn c\u1ea3m x\u00fac c\u1ee7a ch\u00fang ta.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"troubleshooting-map-symptom-check-fix-what-to-spec-next-time\">S\u01a1 \u0111\u1ed3 quy tr\u00ecnh kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 (tri\u1ec7u ch\u1ee9ng \u2192 ki\u1ec3m tra \u2192 s\u1eeda ch\u1eefa \u2192 nh\u1eefng g\u00ec c\u1ea7n ki\u1ec3m tra l\u1ea7n sau)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 (ti\u00eau \u0111\u1ec1 lu\u1eadn \u0111i\u1ec3m)<\/th><th>Nh\u1eefng \u0111i\u1ec1u b\u1ea1n s\u1ebd nh\u1eadn th\u1ea5y<\/th><th>Ki\u1ec3m tra nhanh<\/th><th>S\u1eeda ngay<\/th><th>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho \u0111\u1ee3t tri\u1ec3n khai ti\u1ebfp theo (Th\u1ebb th\u00f4ng minh CXJ)<\/th><\/tr><\/thead><tbody><tr><td><strong>Thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh: kim lo\u1ea1i, ch\u1ea5t l\u1ecfng, \u0111\u1ed9 \u1ea9m l\u00e0m l\u1ec7ch t\u1ea7n s\u1ed1.<\/strong><\/td><td>\u201cH\u00f4m qua th\u00ec \u1ed5n, h\u00f4m nay c\u1ea7n li\u00ean l\u1ea1c.\u201d<\/td><td>C\u00f3 ph\u1ea3i ai \u0111\u00f3 \u0111\u00e3 l\u1eafp th\u00eam t\u1ea5m kim lo\u1ea1i, ph\u1ee5 ki\u1ec7n c\u1eeda m\u1edbi, t\u1ee7 l\u1ea1nh, hay gi\u00e1 \u0111\u1ec3 \u00f4 \u01b0\u1edbt \u1edf g\u1ea7n \u0111\u00f3 kh\u00f4ng?<\/td><td>Di chuy\u1ec3n \u0111\u1ea7u \u0111\u1ecdc, th\u00eam kho\u1ea3ng c\u00e1ch, tr\u00e1nh m\u1eb7t sau b\u1eb1ng kim lo\u1ea1i.<\/td><td>\u0110\u1ed1i v\u1edbi b\u1ec1 m\u1eb7t kim lo\u1ea1i, h\u00e3y ch\u1ecdn c\u00e1c t\u00f9y ch\u1ecdn d\u00e1n tr\u1ef1c ti\u1ebfp l\u00ean kim lo\u1ea1i nh\u01b0... <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/nfc-tags\/\">Th\u1ebb NFC<\/a> ho\u1eb7c <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/anti-metal-abs-uhf-rfid-tags\/\">Th\u1ebb RFID UHF ABS ch\u1ed1ng kim lo\u1ea1i<\/a><\/td><\/tr><tr><td><strong>Ngu\u1ed3n \u0111i\u1ec7n y\u1ebfu l\u00e0m gi\u1ea3m ph\u1ea1m vi \u0111\u1ecdc.<\/strong><\/td><td>T\u1ed1c \u0111\u1ed9 \u0111\u1ecdc d\u1eef li\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh, \u0111\u1eb7c bi\u1ec7t t\u1ec7 h\u01a1n v\u00e0o gi\u1edd cao \u0111i\u1ec3m.<\/td><td>B\u1ed9 ngu\u1ed3n c\u00f3 b\u1ecb thay th\u1ebf kh\u00f4ng? D\u00e2y c\u00e1p DC c\u00f3 d\u00e0i kh\u00f4ng?<\/td><td>S\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n ph\u00f9 h\u1ee3p, r\u00fat ng\u1eafn d\u00e2y d\u1eabn, h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n g\u1ecdn g\u00e0ng.<\/td><td>Ngu\u1ed3n \u1ed5n \u0111\u1ecbnh, c\u00e1c l\u00f4 h\u00e0ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh + m\u00e3 h\u00f3a t\u1eeb <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/services\/\">D\u1ecbch v\u1ee5 RFID OEM\/ODM<\/a><\/td><\/tr><tr><td><strong>Vi\u1ec7c c\u0103n ch\u1ec9nh \u0103ng-ten ho\u1eb7c \u0111\u1ea7u \u0111\u1ecdc t\u1ea1o ra c\u00e1c v\u00f9ng ch\u1ebft.<\/strong><\/td><td>Ch\u1ec9 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u1edf m\u1ed9t g\u00f3c \u0111\u1ed9.<\/td><td>Gi\u00e1 \u0111\u1ee1 \u0111\u1ea7u \u0111\u1ecdc c\u00f3 b\u1ecb l\u1ecfng, nghi\u00eang ho\u1eb7c va ch\u1ea1m kh\u00f4ng?<\/td><td>Si\u1ebft ch\u1eb7t, s\u1eafp x\u1ebfp l\u1ea1i, chu\u1ea9n h\u00f3a c\u00e1ch ng\u01b0\u1eddi d\u00f9ng hi\u1ec3n th\u1ecb huy hi\u1ec7u.<\/td><td>Thi\u1ebft k\u1ebf b\u1ec1n b\u1ec9 h\u01a1n, ch\u1ecbu \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 s\u1eed d\u1ee5ng cao: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-keyfobs\/\">M\u00f3c kh\u00f3a RFID<\/a> ho\u1eb7c <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-bracelets\/\">V\u00f2ng \u0111eo tay RFID\/NFC<\/a><\/td><\/tr><tr><td><strong>D\u00e2y c\u00e1p, \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn.<\/strong><\/td><td>\u201cSau khi b\u1ea3o tr\u00ec th\u00ec t\u00ecnh tr\u1ea1ng c\u00f2n t\u1ec7 h\u01a1n\u201d<\/td><td>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i m\u1edbi? \u0110\u1ea7u n\u1ed1i b\u1ecb h\u1ecfng?<\/td><td>Th\u00e1o c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, thay th\u1ebf c\u00e1p\/\u0111\u1ea7u n\u1ed1i.<\/td><td>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng tem\/nh\u00e3n trong qu\u00e1 tr\u00ecnh gia c\u00f4ng: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-inlay\/\">L\u1edbp ph\u1ee7 RFID<\/a><\/td><\/tr><tr><td><strong>Kh\u00f4ng ph\u1ea3i do ng\u01b0\u1eddi \u0111\u1ecdc: t\u1ea5m th\u1ebb tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc h\u01a1n.<\/strong><\/td><td>Ch\u1ec9 m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng b\u1ecb l\u1ed7i<\/td><td>Th\u1ebb c\u00f3 b\u1ecb n\u1ee9t, cong, m\u00f2n kh\u00f4ng, hay \u0111\u01b0\u1ee3c c\u1ea5t gi\u1eef b\u1eb1ng k\u1eb9p kim lo\u1ea1i trong v\u00ed kh\u00f4ng?<\/td><td>Thay th\u1ebf huy hi\u1ec7u b\u1ecb h\u1ecfng, h\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng.<\/td><td>Ch\u1ea5t li\u1ec7u t\u1ed1t h\u01a1n + in \u1ea5n + m\u00e3 h\u00f3a t\u1ed1t h\u01a1n: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-cards\/\">Th\u1ebb RFID<\/a><\/td><\/tr><tr><td><strong>C\u00e0i \u0111\u1eb7t tr\u00ecnh \u0111\u1ecdc c\u00f3 th\u1ec3 b\u1ecb t\u1eaft m\u1ed9t c\u00e1ch v\u00f4 t\u00ecnh.<\/strong><\/td><td>Sau khi kh\u1edfi \u0111\u1ed9ng l\u1ea1i\/c\u1eadp nh\u1eadt, ph\u1ea1m vi ph\u1ee7 s\u00f3ng gi\u1ea3m.<\/td><td>So s\u00e1nh c\u1ea5u h\u00ecnh v\u1edbi c\u1ea5u h\u00ecnh c\u01a1 b\u1ea3n<\/td><td>Kh\u00f4i ph\u1ee5c c\u00f4ng su\u1ea5t\/\u0111\u1ed9 nh\u1ea1y TX, kh\u00f3a c\u00e0i \u0111\u1eb7t<\/td><td>Ki\u1ec3m so\u00e1t d\u1eef li\u1ec7u c\u1ea5p l\u00f4 + b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m t\u1eeb <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/services\/\">D\u1ecbch v\u1ee5 RFID OEM\/ODM<\/a><\/td><\/tr><tr><td><strong>\u0110\u00f4i khi \u0111\u00f3 ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1eadt l\u00fd: LF\/HF \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n.<\/strong><\/td><td>B\u1ea1n s\u1ebd kh\u00f4ng bao gi\u1edd c\u00f3 \u0111\u01b0\u1ee3c &quot;t\u1ea7m b\u1eafn xa&quot; khi u\u1ed1ng bia t\u01b0\u01a1i.<\/td><td>X\u00e1c nh\u1eadn t\u1ea7n su\u1ea5t + k\u1ef3 v\u1ecdng<\/td><td>Thi\u1ebft k\u1ebf l\u1ea1i lu\u1ed3ng ng\u01b0\u1eddi d\u00f9ng (v\u00f9ng ch\u1ea1m), \u0111\u1eebng theo \u0111u\u1ed5i nh\u1eefng th\u1ee9 vi\u1ec3n v\u00f4ng<\/td><td>N\u1ebfu b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n ph\u1ea1m vi ph\u1ee7 s\u00f3ng r\u1ed9ng, h\u00e3y ch\u1ecdn c\u00e1c th\u1ebb UHF nh\u01b0... <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/anti-metal-abs-uhf-rfid-tags\/\">Th\u1ebb RFID UHF ABS ch\u1ed1ng kim lo\u1ea1i<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"environment-changes-are-the-usual-suspect-metal-liquid-humidity-detune-the-field\">Thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh: kim lo\u1ea1i, ch\u1ea5t l\u1ecfng, \u0111\u1ed9 \u1ea9m l\u00e0m l\u1ec7ch t\u1ea7n s\u1ed1.<\/h2>\n\n\n\n<p>\u0110\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 kinh \u0111i\u1ec3n ki\u1ec3u &quot;ch\u1eb3ng c\u00f3 g\u00ec thay \u0111\u1ed5i&quot;... ngo\u1ea1i tr\u1eeb vi\u1ec7c v\u1ecb tr\u00ed \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111\u00e3 thay \u0111\u1ed5i. Ai \u0111\u00f3 l\u1eafp m\u1ed9t t\u1ea5m kim lo\u1ea1i s\u00e1ng b\u00f3ng ph\u00eda sau \u0111\u1ea7u \u0111\u1ecdc. Ho\u1eb7c m\u1ed9t t\u1ea5m che c\u1ed5ng xoay m\u1edbi. Ho\u1eb7c m\u1ed9t t\u1ee7 l\u1ea1nh \u0111\u1ef1ng \u0111\u1ed3 u\u1ed1ng ngay c\u1ea1nh t\u01b0\u1eddng. \u0110\u1ed9t nhi\u00ean, t\u00edn hi\u1ec7u b\u1ecb l\u1ec7ch v\u00e0 v\u00f9ng \u0111\u1ecdc c\u1ee7a b\u1ea1n b\u1ecb m\u1ea5t k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<p>C\u1ea3m nh\u1eadn th\u1ef1c t\u1ebf: l\u1ed1i v\u00e0o ph\u00f2ng t\u1eadp, kh\u1eafp n\u01a1i \u0111\u1ec1u b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9. C\u00e1c th\u00e0nh vi\u00ean b\u1eaft \u0111\u1ea7u th\u1ef1c hi\u1ec7n \u0111i\u1ec7u nh\u1ea3y &quot;g\u00f5 g\u00f5 g\u00f5&quot; v\u1ee5ng v\u1ec1. Nh\u00e2n vi\u00ean n\u00f3i &quot;th\u1ebb kh\u00f4ng t\u1ed1t&quot;. Kh\u00f4ng. M\u00f4i tr\u01b0\u1eddng \u1edf \u0111\u00e2y \u0111ang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c k\u1ebft \u0111\u00f4i.<\/p>\n\n\n\n<p>Nh\u1eefng g\u00ec hi\u1ec7u qu\u1ea3 trong th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00e3y t\u1ea1o m\u1ed9t kho\u1ea3ng c\u00e1ch nh\u1ecf gi\u1eefa \u0111\u1ea7u \u0111\u1ecdc v\u00e0 kim lo\u1ea1i. Ngay c\u1ea3 m\u1ed9t kho\u1ea3ng c\u00e1ch nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 gi\u00fap \u00edch.<\/li>\n\n\n\n<li>Di chuy\u1ec3n \u0111\u1ea7u \u0111\u1ecdc \u0111\u1ebfn m\u1ed9t v\u1ecb tr\u00ed \u00edt g\u00e2y kh\u00f3 ch\u1ecbu h\u01a1n (kh\u00f4ng ph\u1ea3i ngay tr\u00ean khung kim lo\u1ea1i).<\/li>\n\n\n\n<li>N\u1ebfu &quot;gi\u1ea5y ch\u1ee9ng nh\u1eadn&quot; c\u1ee7a b\u1ea1n th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t th\u1ebb g\u1eafn tr\u00ean thi\u1ebft b\u1ecb kim lo\u1ea1i, \u0111\u1eebng s\u1eed d\u1ee5ng nh\u00e3n d\u00e1n th\u00f4ng th\u01b0\u1eddng. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i th\u1ebb \u0111\u01b0\u1ee3c g\u1eafn tr\u1ef1c ti\u1ebfp l\u00ean kim lo\u1ea1i, v\u00ed d\u1ee5 nh\u01b0... <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/nfc-tags\/\">Th\u1ebb NFC<\/a> (c\u00e1c t\u00f9y ch\u1ecdn tr\u00ean kim lo\u1ea1i) ho\u1eb7c <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/anti-metal-abs-uhf-rfid-tags\/\">Th\u1ebb RFID UHF ABS ch\u1ed1ng kim lo\u1ea1i<\/a>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-6d73a80\" id=\"gspb_image-id-gsbp-6d73a80\"><img decoding=\"async\" src=\"https:\/\/www.cxjsmartcard.com\/wp-content\/uploads\/2025\/12\/Troubleshooting-RFID-Access-Cards-What-to-Do-When-Read-Range-Drops-2.webp\" data-src=\"\" alt=\"\" loading=\"lazy\" width=\"676\" height=\"676\"\/><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"weak-power-supply-shrinks-read-range\">Ngu\u1ed3n \u0111i\u1ec7n y\u1ebfu l\u00e0m gi\u1ea3m ph\u1ea1m vi \u0111\u1ecdc.<\/h2>\n\n\n\n<p>S\u00f3ng RF ph\u00e1t ra t\u1eeb ngu\u1ed3n \u0111i\u1ec7n. N\u1ebfu ngu\u1ed3n \u0111i\u1ec7n y\u1ebfu, tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb c\u0169ng y\u1ebfu. \u0110\u1ea7u \u0111\u1ecdc c\u00f3 th\u1ec3 v\u1eabn s\u00e1ng \u0111\u00e8n, n\u00ean m\u1ecdi ng\u01b0\u1eddi cho r\u1eb1ng ngu\u1ed3n \u0111i\u1ec7n v\u1eabn t\u1ed1t. Nh\u01b0ng kho\u1ea3ng c\u00e1ch \u0111\u1ecdc m\u1edbi cho bi\u1ebft s\u1ef1 th\u1eadt.<\/p>\n\n\n\n<p>C\u00e2u chuy\u1ec7n l\u1ed7i th\u01b0\u1eddng g\u1eb7p: ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t thay th\u1ebf b\u1ed9 ngu\u1ed3n b\u1eb1ng &quot;b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec c\u00f3 s\u1eb5n trong xe&quot;. Ho\u1eb7c s\u1eed d\u1ee5ng d\u00e2y c\u00e1p DC d\u00e0i nh\u01b0ng ti\u1ebft di\u1ec7n nh\u1ecf. Khi c\u00f3 t\u1ea3i, \u0111i\u1ec7n \u00e1p gi\u1ea3m. Ph\u1ea1m vi \u0111o c\u0169ng gi\u1ea3m. Nghe c\u00f3 v\u1ebb nh\u00e0m ch\u00e1n, nh\u01b0ng n\u00f3 x\u1ea3y ra r\u1ea5t th\u01b0\u1eddng xuy\u00ean.<\/p>\n\n\n\n<p>H\u00e3y l\u00e0m nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u1eafp l\u1ea1i \u0111\u00fang b\u1ed9 ngu\u1ed3n.<\/li>\n\n\n\n<li>R\u00fat ng\u1eafn \u0111\u01b0\u1eddng d\u00e2y DC, s\u1eafp x\u1ebfp d\u00e2y g\u1ecdn g\u00e0ng, tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i kh\u00f4ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/li>\n\n\n\n<li>Sau khi s\u1eeda xong, h\u00e3y ghi l\u1ea1i th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n: &quot;v\u00f9ng \u0111\u1ecdc b\u00ecnh th\u01b0\u1eddng&quot; v\u00e0 c\u1ea5u h\u00ecnh c\u1ee7a \u0111\u1ea7u \u0111\u1ecdc.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu b\u1ea1n qu\u1ea3n l\u00fd nhi\u1ec1u c\u1eeda ra v\u00e0o, ch\u00ednh b\u1ea1n trong t\u01b0\u01a1ng lai s\u1ebd c\u1ea3m \u01a1n b\u1ea1n v\u00ec \u0111\u00e3 ch\u1ecdn c\u00e1c lo\u1ea1i th\u1ebb c\u00f3 c\u1ea5u tr\u00fac nh\u1ea5t qu\u00e1n v\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c minh. \u0110\u00f3 l\u00e0 l\u00fac quy tr\u00ecnh l\u00e0m vi\u1ec7c theo ti\u00eau chu\u1ea9n nh\u00e0 m\u00e1y ph\u00e1t huy t\u00e1c d\u1ee5ng\u2014nh\u01b0 th\u1ebb th\u00f4ng minh CXJ. <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/services\/\">D\u1ecbch v\u1ee5 RFID OEM\/ODM<\/a> \u0110\u1ec3 m\u00e3 h\u00f3a v\u00e0 ki\u1ec3m tra.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"antenna-or-reader-alignment-creates-dead-zones\">Vi\u1ec7c c\u0103n ch\u1ec9nh \u0103ng-ten ho\u1eb7c \u0111\u1ea7u \u0111\u1ecdc t\u1ea1o ra c\u00e1c v\u00f9ng ch\u1ebft.<\/h2>\n\n\n\n<p>M\u1ed9t \u0111\u1ea7u \u0111\u1ecdc \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t l\u1ec7ch v\u00e0i \u0111\u1ed9 c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m ch\u1ebft k\u1ef3 l\u1ea1. Ng\u01b0\u1eddi d\u00f9ng h\u1ecdc c\u00e1ch &quot;t\u00ecm \u0111i\u1ec3m t\u1ed1i \u01b0u&quot;, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n v\u1ec1 c\u01a1 b\u1ea3n \u0111ang hu\u1ea5n luy\u1ec7n ng\u01b0\u1eddi d\u00f9ng th\u1ea5t b\u1ea1i.<\/p>\n\n\n\n<p>Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u01b0\u1eddi \u0111\u1ecdc c\u00f3 \u0111ang l\u01a1 l\u00e0 kh\u00f4ng?<\/li>\n\n\n\n<li>Gi\u00e1 treo t\u01b0\u1eddng c\u00f3 b\u1ecb x\u00ea d\u1ecbch kh\u00f4ng?<\/li>\n\n\n\n<li>C\u00f3 ph\u1ea3i ai \u0111\u00f3 \u0111\u00e3 \u0111\u00e2m v\u00e0o n\u00f3 b\u1eb1ng xe \u0111\u1ea9y kh\u00f4ng?<\/li>\n<\/ul>\n\n\n\n<p>S\u1eeda ch\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110i\u1ec1u ch\u1ec9nh l\u1ea1i v\u00e0 si\u1ebft ch\u1eb7t.<\/li>\n\n\n\n<li>D\u00e1n nh\u00e3n \u0111\u01a1n gi\u1ea3n &quot;v\u00f9ng ch\u1ea1m&quot; cho ng\u01b0\u1eddi d\u00f9ng. \u0110\u00fang v\u1eady, n\u00f3 r\u1ea5t \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng n\u00f3 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n th\u01b0\u1eddng xuy\u00ean l\u00e0m h\u1ecfng th\u1ebb (ph\u00f2ng t\u1eadp th\u1ec3 d\u1ee5c, tr\u01b0\u1eddng h\u1ecdc, c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng), h\u00e3y c\u00e2n nh\u1eafc chuy\u1ec3n t\u1eeb th\u1ebb gi\u1ea5y sang c\u00e1c \u0111\u1ecbnh d\u1ea1ng b\u1ec1n h\u01a1n. M\u00f3c kh\u00f3a c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c va \u0111\u1eadp v\u00e0 r\u01a1i r\u1edbt t\u1ed1t h\u01a1n nhi\u1ec1u: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-keyfobs\/\">M\u00f3c kh\u00f3a RFID<\/a>. \u0110\u1ed1i v\u1edbi c\u00e1c b\u1ec3 b\u01a1i, s\u1ef1 ki\u1ec7n v\u00e0 nh\u00e2n vi\u00ean kh\u00f4ng mu\u1ed1n mang theo b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec, h\u00e3y s\u1eed d\u1ee5ng v\u00f2ng \u0111eo tay: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-bracelets\/\">V\u00f2ng \u0111eo tay RFID\/NFC<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cables-connectors-and-adapters-steal-rf-energy\">D\u00e2y c\u00e1p, \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn.<\/h2>\n\n\n\n<p>L\u1ed7i n\u00e0y xu\u1ea5t hi\u1ec7n sau khi ai \u0111\u00f3 \u0111\u00e3 &quot;s\u1eeda ch\u1eefa&quot; n\u00f3. H\u1ecd k\u00e9o d\u00e0i d\u00e2y c\u00e1p, th\u00eam b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i r\u1ebb ti\u1ec1n ho\u1eb7c b\u1ea5m \u0111\u1ea7u n\u1ed1i sai c\u00e1ch. \u0110\u01b0\u1eddng truy\u1ec1n t\u00edn hi\u1ec7u RF b\u1ecb m\u1ea5t n\u0103ng l\u01b0\u1ee3ng. Ph\u1ea1m vi thu h\u1eb9p. S\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 t\u0103ng l\u00ean.<\/p>\n\n\n\n<p>Ki\u1ec3m tra nhanh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00e3y t\u00ecm mua c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ho\u1eb7c kh\u1edbp n\u1ed1i m\u1edbi.<\/li>\n\n\n\n<li>Ki\u1ec3m tra b\u1eb1ng c\u00e1ch l\u1eafc nh\u1eb9 c\u00e1c \u0111\u1ea7u n\u1ed1i. N\u1ebfu ch\u1ec9 \u0111\u1ecdc \u0111\u01b0\u1ee3c khi b\u1ea1n ch\u1ea1m v\u00e0o d\u00e2y c\u00e1p, th\u00ec b\u1ea1n \u0111\u00e3 t\u00ecm ra v\u1ea5n \u0111\u1ec1.<\/li>\n<\/ul>\n\n\n\n<p>S\u1eeda ch\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00e1o b\u1ecf c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n\n\n\n<li>Thay th\u1ebf c\u00e1c d\u00e2y c\u00e1p\/\u0111\u1ea7u n\u1ed1i b\u1ecb h\u1ecfng.<\/li>\n\n\n\n<li>H\u00e3y gi\u1eef cho c\u00e1c l\u01b0\u1ee3t ch\u1ea1y ng\u1eafn v\u00e0 g\u1ecdn g\u00e0ng.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n c\u0169ng s\u1eed d\u1ee5ng nh\u00e3n ho\u1eb7c tem d\u00e1n (th\u1ebb kh\u00e1ch, m\u00e3 s\u1ed1 t\u00e0i s\u1ea3n, h\u1eadu c\u1ea7n), th\u00ec t\u00ednh \u1ed5n \u0111\u1ecbnh c\u0169ng r\u1ea5t quan tr\u1ecdng. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u chuy\u1ec3n \u0111\u1ed5i c\u00f3 t\u00ednh nh\u1ea5t qu\u00e1n nh\u01b0... <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-inlay\/\">L\u1edbp ph\u1ee7 RFID<\/a> V\u00e0 <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-sticker-labels\/\">Nh\u00e3n d\u00e1n RFID<\/a>. \u00cdt bi\u1ebfn th\u1ec3 h\u01a1n, \u00edt \u0111i\u1ec1u k\u1ef3 l\u1ea1 h\u01a1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"it-s-not-the-reader-the-card-got-harder-to-read\">Kh\u00f4ng ph\u1ea3i do ng\u01b0\u1eddi \u0111\u1ecdc: t\u1ea5m th\u1ebb tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc h\u01a1n.<\/h2>\n\n\n\n<p>\u0110\u00f4i khi v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1 n\u1eb1m \u1edf th\u1ebb \u2013 nh\u01b0ng kh\u00f4ng ph\u1ea3i v\u00ec con chip \u201c\u0111\u1ed9t nhi\u00ean h\u1ecfng\u201d. Th\u00f4ng th\u01b0\u1eddng, th\u1ebb b\u1ecb n\u1ee9t, cong ho\u1eb7c \u0111\u01b0\u1ee3c c\u1ea5t trong v\u00ed kim lo\u1ea1i. Ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng x\u1ebfp nhi\u1ec1u th\u1ebb ch\u1ed3ng l\u00ean nhau v\u00e0 th\u1eafc m\u1eafc t\u1ea1i sao th\u1ebb l\u1ea1i b\u1ecb nh\u1ea7m l\u1eabn.<\/p>\n\n\n\n<p>N\u00ean l\u00e0m g\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra c\u00e1c th\u1ebb b\u1ecb l\u1ed7i. T\u00ecm ki\u1ebfm c\u00e1c \u0111\u01b0\u1eddng n\u1ee9t, v\u1ebft cong, v\u1ebft n\u1ee9t \u1edf c\u1ea1nh.<\/li>\n\n\n\n<li>H\u00e3y h\u1ecfi h\u1ecd mang n\u00f3 nh\u01b0 th\u1ebf n\u00e0o. B\u1ea1n s\u1ebd nghe nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi v\u00f4 l\u00fd, nh\u01b0ng h\u1ecfi nh\u01b0 v\u1eady c\u0169ng c\u00f3 \u00edch.<\/li>\n\n\n\n<li>Thay th\u1ebf l\u00f4 h\u00e0ng nh\u1ecf b\u1ecb h\u01b0 h\u1ecfng v\u1ec1 m\u1eb7t v\u1eadt l\u00fd.<\/li>\n<\/ul>\n\n\n\n<p>Khi \u0111\u1eb7t h\u00e0ng l\u1ea1i, h\u00e3y ch\u1ecdn ch\u1ea5t li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng v\u00e0 nh\u00e0 cung c\u1ea5p c\u00f3 kh\u1ea3 n\u0103ng in \u1ea5n v\u00e0 m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch. CXJ Smart Card cung c\u1ea5p d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh. <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-cards\/\">Th\u1ebb RFID<\/a> V\u1edbi c\u00e1c t\u00f9y ch\u1ecdn chip\/t\u1ea7n s\u1ed1 v\u00e0 kh\u1ea3 n\u0103ng c\u00e1 nh\u00e2n h\u00f3a, n\u00f3 th\u1ef1c s\u1ef1 gi\u00fap v\u1eadn h\u00e0nh m\u01b0\u1ee3t m\u00e0 h\u01a1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-05cb038\" id=\"gspb_image-id-gsbp-05cb038\"><img decoding=\"async\" src=\"https:\/\/www.cxjsmartcard.com\/wp-content\/uploads\/2025\/12\/Troubleshooting-RFID-Access-Cards-What-to-Do-When-Read-Range-Drops-3.webp\" data-src=\"\" alt=\"\" loading=\"lazy\" width=\"676\" height=\"676\"\/><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"reader-settings-can-get-turned-down-by-accident\">C\u00e0i \u0111\u1eb7t tr\u00ecnh \u0111\u1ecdc c\u00f3 th\u1ec3 b\u1ecb t\u1eaft m\u1ed9t c\u00e1ch v\u00f4 t\u00ecnh.<\/h2>\n\n\n\n<p>C\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m. Kh\u00f4i ph\u1ee5c c\u1ea5u h\u00ecnh. M\u1ed9t &quot;th\u1eed nghi\u1ec7m t\u1ea1m th\u1eddi&quot; m\u00e0 ai \u0111\u00f3 qu\u00ean ho\u00e0n t\u00e1c. Chuy\u1ec7n n\u00e0y th\u01b0\u1eddng x\u1ea3y ra.<\/p>\n\n\n\n<p>H\u00e3y l\u00e0m nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>So s\u00e1nh c\u00e1c c\u00e0i \u0111\u1eb7t hi\u1ec7n t\u1ea1i v\u1edbi c\u00e0i \u0111\u1eb7t c\u01a1 b\u1ea3n c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n<li>Kh\u00f4i ph\u1ee5c c\u00f4ng su\u1ea5t\/\u0111\u1ed9 nh\u1ea1y TX khi c\u1ea7n thi\u1ebft.<\/li>\n\n\n\n<li>N\u1ebfu c\u00f3 th\u1ec3, h\u00e3y kh\u00f3a c\u00e0i \u0111\u1eb7t ho\u1eb7c h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp qu\u1ea3n tr\u1ecb.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu b\u1ea1n x\u1eed l\u00fd c\u00e1c l\u00f4 d\u1eef li\u1ec7u l\u1edbn, \u0111\u1eebng coi d\u1eef li\u1ec7u l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ee9 y\u1ebfu. M\u00e3 h\u00f3a v\u00e0 x\u00e1c minh d\u1eef li\u1ec7u n\u00ean l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a k\u1ebf ho\u1ea1ch mua s\u1eafm, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t vi\u1ec7c ph\u1ea3i l\u00e0m g\u1ea5p g\u00e1p v\u00e0o ph\u00fat cu\u1ed1i. \u0110\u00f3 ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/services\/\">D\u1ecbch v\u1ee5 RFID OEM\/ODM<\/a> l\u00e0 d\u00e0nh cho.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sometimes-it-s-just-physics-lf-hf-is-near-field-by-design\">\u0110\u00f4i khi \u0111\u00f3 ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1eadt l\u00fd: LF\/HF \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n.<\/h2>\n\n\n\n<p>N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng LF ho\u1eb7c HF\/NFC, b\u1ea1n \u0111ang s\u1ed1ng trong v\u00f9ng ph\u1ee7 s\u00f3ng g\u1ea7n. Ch\u1ea1m nh\u1eb9 ho\u1eb7c ti\u1ebfp x\u00fac g\u1ea7n l\u00e0 \u0111i\u1ec1u b\u00ecnh th\u01b0\u1eddng. \u0110\u1eebng h\u1ee9a h\u1eb9n v\u1edbi ng\u01b0\u1eddi d\u00f9ng tr\u1ea3i nghi\u1ec7m t\u1ea7m xa tr\u1eeb khi b\u1ea1n thi\u1ebft k\u1ebf l\u1ea1i c\u00f4ng ngh\u1ec7.<\/p>\n\n\n\n<p>N\u1ebfu doanh nghi\u1ec7p th\u1ef1c s\u1ef1 c\u1ea7n kho\u1ea3ng c\u00e1ch \u0111\u1ecdc xa h\u01a1n (khu v\u1ef1c xe ra v\u00e0o, l\u00e0n \u0111\u01b0\u1eddng c\u1ed5ng, \u0111i\u1ec3m ngh\u1ebdn t\u00e0i s\u1ea3n), h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng UHF v\u1edbi lo\u1ea1i th\u1ebb ph\u00f9 h\u1ee3p. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng nhi\u1ec1u kim lo\u1ea1i, c\u00e1c t\u00f9y ch\u1ecdn UHF tr\u00ean kim lo\u1ea1i nh\u01b0... <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/anti-metal-abs-uhf-rfid-tags\/\">Th\u1ebb RFID UHF ABS ch\u1ed1ng kim lo\u1ea1i<\/a> l\u00e0 m\u1ed9t con \u0111\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"rfid-product-categories-for-access-control-and-related-scenarios\">C\u00e1c lo\u1ea1i s\u1ea3n ph\u1ea9m RFID d\u00e0nh cho ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n li\u00ean quan<\/h2>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch \u0111\u01a1n gi\u1ea3n &quot;n\u00ean d\u00f9ng c\u00e1i g\u00ec \u1edf \u0111\u00e2u&quot;, g\u1eafn li\u1ec1n v\u1edbi c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf (kh\u00f4ng ph\u1ea3i l\u00fd thuy\u1ebft):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1ebb ra v\u00e0o c\u1eeda v\u00e0 th\u1ebb nh\u00e2n vi\u00ean ti\u00eau chu\u1ea9n: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-cards\/\">Th\u1ebb RFID<\/a><\/li>\n\n\n\n<li>Th\u1ebb th\u00e0nh vi\u00ean ph\u00f2ng t\u1eadp, quy\u1ec1n s\u1eed d\u1ee5ng b\u00e3i \u0111\u1eadu xe, th\u1ebb m\u00f3c ch\u00eca kh\u00f3a: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-keyfobs\/\">M\u00f3c kh\u00f3a RFID<\/a><\/li>\n\n\n\n<li>S\u1ef1 ki\u1ec7n, c\u00f4ng vi\u00ean n\u01b0\u1edbc, khu ngh\u1ec9 d\u01b0\u1ee1ng, b\u1ec7nh vi\u1ec7n: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-bracelets\/\">V\u00f2ng \u0111eo tay RFID\/NFC<\/a><\/li>\n\n\n\n<li>T\u00e0i s\u1ea3n, k\u1ec7, th\u00f9ng carton, nh\u00e3n theo d\u00f5i: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-sticker-labels\/\">Nh\u00e3n d\u00e1n RFID<\/a><\/li>\n\n\n\n<li>Phi c\u00f4ng, chuy\u1ec3n \u0111\u1ed5i, s\u1ea3n xu\u1ea5t nh\u00e3n s\u1ed1 l\u01b0\u1ee3ng l\u1edbn: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/rfid-nfc-inlay\/\">L\u1edbp ph\u1ee7 RFID<\/a><\/li>\n\n\n\n<li>B\u1ec1 m\u1eb7t kim lo\u1ea1i, d\u1ee5ng c\u1ee5, thi\u1ebft b\u1ecb, l\u1eafp \u0111\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/anti-metal-abs-uhf-rfid-tags\/\">Th\u1ebb RFID UHF ABS ch\u1ed1ng kim lo\u1ea1i<\/a><\/li>\n\n\n\n<li>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng NFC (ch\u1ea1m, gh\u00e9p n\u1ed1i, \u00e1p ph\u00edch th\u00f4ng minh, nh\u1eadn di\u1ec7n kim lo\u1ea1i): <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/nfc-tags\/\">Th\u1ebb NFC<\/a><\/li>\n\n\n\n<li>D\u1ecbch v\u1ee5 tr\u1ecdn g\u00f3i bao g\u1ed3m t\u00f9y ch\u1ec9nh, m\u00e3 h\u00f3a v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng: <a href=\"https:\/\/www.cxjsmartcard.com\/vi\/services\/\">D\u1ecbch v\u1ee5 RFID OEM\/ODM<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Your access control reader used to catch badges easily. Now people have to \u201ckiss\u201d the card to the reader. You get queues, angry calls, and extra truck rolls. It feels like a card problem, but most of the time it\u2019s a system problem\u2014something changed in the RF chain. I\u2019m going to walk you through a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1345,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"#gspb_image-id-gsbp-05cb038 img,#gspb_image-id-gsbp-6d73a80 img,#gspb_image-id-gsbp-e5257fd img{vertical-align:top;display:inline-block;box-sizing:border-box;max-width:100%;height:auto}","footnotes":""},"categories":[33],"tags":[],"class_list":["post-1343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application-insights"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/posts\/1343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/comments?post=1343"}],"version-history":[{"count":2,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/posts\/1343\/revisions"}],"predecessor-version":[{"id":1349,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/posts\/1343\/revisions\/1349"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/media\/1345"}],"wp:attachment":[{"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/media?parent=1343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/categories?post=1343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cxjsmartcard.com\/vi\/wp-json\/wp\/v2\/tags?post=1343"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}