{"id":114,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/envelope-spectrum\/"},"modified":"2026-05-23T22:36:25","modified_gmt":"2026-05-23T22:36:25","slug":"envelope-spectrum","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ms\/glossary\/envelope-spectrum\/","title":{"rendered":"Apakah Spektrum Sampul Surat? Analisis Isyarat Terdedah"},"content":{"rendered":"<h1>Memahami Spektrum Sampul<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-1\/\" title=\"Pengimbang mudah alih &amp; Penganalisis getaran Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit lengkap penyeimbang mudah alih dan penganalisis getaran\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ms\/product-category\/devices\/\" rel=\"tag\">Peranti<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-1\/\" title=\"Pengimbang mudah alih &amp; Penganalisis getaran Balanset-1A\">Pengimbang mudah alih &amp; Penganalisis getaran Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + VAT (jika berkenaan)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/vibration-sensor\/\" title=\"Penderia getaran\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Pandangan dekat sensor getaran Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ms\/product\/vibration-sensor\/\" title=\"Penderia getaran\">Penderia getaran<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + VAT (jika berkenaan)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Penderia Optik (Takometer Laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Penderia Optik (Takometer Laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ms\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Penderia Optik (Takometer Laser)\">Penderia Optik (Takometer Laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + VAT (jika berkenaan)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit pengimbangan rotor Vibromera: kes pembawa, perapi isyarat berbilang saluran, penganalisis genggam, tapak magnet, sensor getaran dan kabel bergelung.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ms\/product-category\/devices\/\" rel=\"tag\">Peranti<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + VAT (jika berkenaan)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ms\/wp-json\/wp\/v2\/glossary\/114?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ms\/product\/magnet-stand\/\" title=\"Magnetic Stand Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Pangkalan magnet.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 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class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p>The <strong>spektrum sampul<\/strong> ialah kekerapan <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/spectrum\/\">spektrum<\/a> diperoleh dengan mengira <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/fft\/\">FFT<\/a> sampul \u2014 isyarat terdemodulasi amplitudo \u2014 dihasilkan semasa <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/envelope-analysis\/\">analisis sampul<\/a>. Ia mendedahkan <em>kadar pengulangan<\/em> hentaman dan modulasi tertanam dalam <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/vibration\/\">getaran<\/a>, yang menjadikannya teknik paling berkuasa tunggal untuk mengesan <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bearing-defects\/\">cacat bantalan elemen bergulir<\/a>. Di mana spektrum kecepatan standard menampilkan frekuensi pembawa \u2014 resonansi struktur yang dipukul oleh dampak \u2014 spektrum envelope menunjukkan kadar terjadinya dampak tersebut, memetakan secara langsung ke <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bearing-fault-frequencies\/\">frekuensi kerosakan galas<\/a> BPFO, BPFI, BSF dan FTF.<\/p>\n<p>Dengan kata lain, spektrum envelope untuk diagnostik bantalan adalah seperti spektrum biasa untuk <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/unbalance\/\">ketidakseimbangan<\/a> and <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/misalignment\/\">salah jajaran<\/a>: alat utama yang memungkinkan deteksi awal kerusakan. Alat ini mengekstrak frekuensi diagnostik yang bersih dari &#8220;kebisingan&#8221; frekuensi tinggi yang tidak dapat diselesaikan oleh spektrum kecepatan.<\/p>\n<h2>1. Cara Spektrum Envelope Dihasilkan<\/h2>\n<p>Cacat lokal \u2014 serpihan pada lintasan, lubang pada rol \u2014 mengenai kontak keras sekali setiap kali lewat dan membangkitkan resonansi alami bantalan pada beberapa kHz. Resonansi tersebut adalah <em>pembawa<\/em>; rangkaian dampak reguler <em>memodulasi<\/em> amplitudo pembawa. Proses envelope menghilangkan pembawa dan mempertahankan modulasi:<\/p>\n<ol>\n<li><strong>Penapis jalur-lulus:<\/strong> mengisolasi pita frekuensi tinggi yang kaya dengan energi resonansi (umumnya 1\u201310 kHz), membuang getaran frekuensi rendah dari ketidakseimbangan dan salah penyelarasan. Sebuah <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/band-pass-filter\/\">penapis laluan jalur<\/a> melakukan tugas ini.<\/li>\n<li><strong>Deteksi envelope (<a href=\"https:\/\/vibromera.eu\/ms\/glossary\/demodulation\/\">penyahmodulatan<\/a>):<\/strong> menyetarakan sinyal terpotong dan melacak garis besar amplitudnya \u2014 envelope.<\/li>\n<li><strong>Filter low-pass:<\/strong> meratakan envelope untuk menghilangkan riak pembawa sisa apa pun.<\/li>\n<li><strong>FFT:<\/strong> mengubah envelope ke domain frekuensi.<\/li>\n<li><strong>Keputusan:<\/strong> spektrum envelope yang puncaknya berada pada laju pengulangan dampak.<\/li>\n<\/ol>\n<p>Ide kunci adalah bahwa frekuensi modulasi yang dipulihkan oleh rantai ini <em>adalah<\/em> frekuensi kerusakan bantalan. Pembawa frekuensi tinggi hanya bertindak sebagai pengantara, berbunyi setiap kali cacat dipukul.<\/p>\n<h2>2. Membaca Spektrum Envelope<\/h2>\n<h3>Bantalan sehat<\/h3>\n<ul>\n<li>Aras envelop keseluruhan yang rendah.<\/li>\n<li>Jejak rata atau landai lembut tanpa puncak yang jelas.<\/li>\n<li>Lantai bunyi pada atau di bawah kepekaan alat.<\/li>\n<\/ul>\n<h3>Galas yang rosak<\/h3>\n<ul>\n<li><strong>Puncak utama:<\/strong> pada frekuensi kesalahan galas \u2014 <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bpfo\/\">BPFO<\/a>, <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bpfi\/\">BPFI<\/a>, <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bsf\/\">BSF<\/a> atau <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/ftf\/\">FTF<\/a>.<\/li>\n<li><strong>Harmonik:<\/strong> 2\u00d7, 3\u00d7, 4\u00d7 daripada frekuensi kerosakan muncul dan bertambah apabila kecacatan semakin teruk.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/sidebands\/\">Jalur sisi<\/a>:<\/strong> berjarak pada sangkar (FTF) atau <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/running-speed\/\">kelajuan larian<\/a> (1\u00d7) selang di sekeliling puncak kesalahan, mencerminkan modulasi beban semasa cacat mengorbit masuk dan keluar zon beban.<\/li>\n<li><strong>Lantai yang tinggi:<\/strong> lantai bunyi keseluruhan meningkat apabila kerosakan permukaan tersebar.<\/li>\n<\/ul>\n<p>Puncak yang sepadan memberitahu anda <em>yang<\/em> elemen telah gagal: puncak pada BPFO menunjukkan trek luar, BPFI ke trek dalam, BSF ke elemen bergiling, dan FTF ke sangkar. Kerana BPFI dan BSF berputar melalui zon beban, ia dimodulasikan amplitud dan oleh itu dikelilingi oleh jalur sisi; cacat BPFO dalam zon beban pegun biasanya tidak.<\/p>\n<h2>3. Mengapa Ia Mengatasi Spektrum Piawai<\/h2>\n<p>Tiga sifat menjadikan spektrum envelop tidak dapat digantikan untuk kerja galas:<\/p>\n<ul>\n<li><strong>Pengesanan awal:<\/strong> ia secara rutin menandai kerosakan awal berkali-kali bulan \u2014 sering 6 hingga 18 \u2014 sebelum kesalahan menjadi jelas dalam spektrum halaju, memberikan masa hadapan maksimum untuk alat ganti dan perancangan. Ia sensitif kepada micro-spall yang menghasilkan hampir tiada tenaga pada skala halaju.<\/li>\n<li><strong>Tandatangan kesalahan yang jelas:<\/strong> kerana ketakseimbangan dan salah jajaran ditapis keluar sebelum demodulasi, frekuensi kesalahan dan jalur sisi mereka berdiri dengan bangga terhadap latar belakang yang bersih, jauh lebih mudah dibaca daripada spektrum jalur lebar yang sesak.<\/li>\n<li><strong>Tangkapan acara tenaga rendah:<\/strong> impak kecil membawa tenaga yang boleh diabaikan pada frekuensi rendah tetapi merangsang resonans frekuensi tinggi dengan cekap. Pemprosesan envelop menguatkan tepat isyarat diagnostik frekuensi tinggi yang lemah ini.<\/li>\n<\/ul>\n<p>Inilah sebabnya analisis envelop duduk bersama <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/shock-pulse-method\/\">kaedah denyutan kejutan<\/a> and <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/spike-energy\/\">tenaga lonjakan<\/a> sebagai tunjang pemantauan keadaan galas, dan mengapa <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/kurtosis\/\">kurtosis<\/a> sering meningkat seiring dengan tahap amplitudo.<\/p>\n<h2>4. Alur Kerja Interpretasi Langkah demi Langkah<\/h2>\n<p>Untuk mengubah plot amplitudo menjadi diagnosis:<\/p>\n<ol>\n<li><strong>Hitung frekuensi cacat<\/strong> untuk bantalan terpasang \u2014 BPFO, BPFI, BSF dan FTF \u2014 dari geometrinya dan kecepatan poros. Kami <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/bearing-defect-frequencies\/\">Kalkulator Frekuensi Kecacatan Galas<\/a> mengembalikan keempat frekuensi tersebut dalam hitungan detik, dan <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/harmonic-frequency-calculator\/\">Pengira Frekuensi Harmonik<\/a> membantu memetakan ordo.<\/li>\n<li><strong>Cari spektrum<\/strong> untuk puncak pada frekuensi tersebut, mengizinkan toleransi \u00b15% untuk slip dan perhitungan.<\/li>\n<li><strong>Konfirmasi dengan harmonik<\/strong> \u2014 cacat bantalan asli menunjukkan deret, bukan puncak tunggal.<\/li>\n<li><strong>Periksa jarak pita samping<\/strong> untuk konfirmasi tambahan sumber cacat.<\/li>\n<li><strong>Diagnosis dan tingkatkan level<\/strong> cacat dari elemen yang cocok dan amplitudo.<\/li>\n<\/ol>\n<p>Skala keparahan kasar, dinyatakan dalam g percepatan amplitudo, membantu memprioritaskan tindakan: sebuah <strong>peringkat awal<\/strong> cacat (\u22480,5\u20131 g) menunjukkan puncak tunggal kecil \u2014 pantau bulanan; sebuah <strong>awal<\/strong> cacat (\u22481\u20133 g) menunjukkan puncak jelas dengan satu atau dua harmonik \u2014 pantau mingguan dan rencanakan penggantian dalam berbulan-bulan; sebuah <strong>sederhana<\/strong> cacat (\u22483\u201310 g) menunjukkan puncak kuat, banyak harmonik dan pita samping \u2014 rencanakan penggantian dalam berminggu-minggu; dan sebuah <strong>lanjutan<\/strong> cacat (&gt;10 g) menunjukkan amplitudo sangat tinggi, banyak harmonik dan lantai yang terangkat \u2014 ganti segera. Ambang batas pasti tergantung pada ukuran dan kecepatan bantalan, jadi selalu interpretasikan terhadap <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/baseline\/\">garis dasar<\/a> dan milik anda sendiri <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/trending\/\">Trening<\/a> sejarah.<\/p>\n<h2>5. Menerapkan Spektrum Amplitudo di Lapangan<\/h2>\n<p>Dalam <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/condition-monitoring\/\">pemantauan keadaan<\/a> program, spektrum sampul wajar digunakan pada setiap laluan galas: trendkan amplitud sampul pada setiap frekuensi kerosakan dan anda memperoleh amaran jauh lebih awal \u2014 dan jauh lebih khusus \u2014 berbanding trend getaran keseluruhan sahaja. Dalam penyelesaian masalah, ia sangat berguna apabila tahap keseluruhan tinggi tetapi spektrum standard kabur, apabila masalah galas disyaki, apabila anda mesti mengesahkan bahawa penggantian benar-benar wajar, atau apabila anda perlu mengenal pasti <em>yang<\/em> galas dalam rangkaian berbilang galas yang sedang gagal. Instrumen mudah alih dua saluran seperti <a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-1\/\">Balanset-1A<\/a> membolehkan juruteknik menangkap getaran frekuensi tinggi secara terus pada setiap perumah dengan <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/accelerometer\/\">akselerometer<\/a>, jadi lawatan lapangan yang sama yang memeriksa <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/residual-unbalance\/\">baki ketidakseimbangan<\/a> selepas kerja pengimbangan juga boleh menyaring galas untuk kerosakan yang baru bermula.<\/p>\n<h2>6. Spektrum Sampul berbanding Analisis Sampul<\/h2>\n<p>Dua istilah ini sering digunakan secara saling ganti, tetapi wajar untuk mengekalkan hierarkinya dengan jelas. <strong>Analisis sampul<\/strong> ialah proses lengkap \u2014 penapisan jalur laluan, nyahmodulasi dan FFT. The <strong>isyarat sampul<\/strong> ialah bentuk gelombang nyahmodulasi domain masa, iaitu produk perantaraan. The <strong>spektrum sampul<\/strong> ialah plot frekuensi akhir, hasil yang benar-benar ditafsir oleh penganalisis. Ringkasnya, spektrum sampul ialah keluaran analisis sampul, dan ia merupakan piawaian emas untuk pengesanan kecacatan galas: keupayaannya mendedahkan frekuensi kerosakan jauh sebelum ia muncul dalam spektrum standard, digabungkan dengan tanda yang jelas dan khusus elemen, menjadikannya bahagian yang amat diperlukan dalam mana-mana set alat penyelenggaraan ramalan untuk peralatan berputar.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/\">\u2190 Kembali ke Indeks Utama<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Ketahui tentang spektrum sampul surat, FFT isyarat sampul surat daripada penyahmodulatan, mendedahkan frekuensi kesalahan galas dengan mengekstrak kadar pengulangan kesan daripada resonans frekuensi tinggi.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-114","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/114\/revisions"}],"predecessor-version":[{"id":101282,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/114\/revisions\/101282"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/media?parent=114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/categories?post=114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/tags?post=114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}