{"id":138,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/holospectrum\/"},"modified":"2026-05-23T22:36:49","modified_gmt":"2026-05-23T22:36:49","slug":"holospectrum","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/tt\/glossary\/holospectrum\/","title":{"rendered":"What is Holospectrum? Full Spectrum Analysis"},"content":{"rendered":"<h1>Understanding Holospectrum<\/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\/tt\/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\/tt\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer 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 full kit portable balancer and vibration analyzer\" 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\/tt\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tt\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer Balanset-1A\">Portable balancer &#038; Vibration analyzer 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\">&euro;<\/span>1,975.00<\/span> + VAT (if applicable)<\/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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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\/tt\/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\/tt\/product\/vibration-sensor\/\" title=\"Vibration sensor\">\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=\"Balanset-1A vibration sensor close-up\" 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\/tt\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tt\/product\/vibration-sensor\/\" title=\"Vibration sensor\">Vibration sensor<\/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\">&euro;<\/span>90.00<\/span> + VAT (if applicable)<\/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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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\/tt\/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\/tt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">\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=\"Optical Sensor (Laser Tachometer)\" 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\/tt\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">Optical Sensor (Laser Tachometer)<\/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\">&euro;<\/span>124.00<\/span> + VAT (if applicable)<\/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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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\/tt\/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\/tt\/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=\"Vibromera rotor balancing kit: carry case, multi-channel signal conditioner, handheld analyzer, magnetic base, vibration sensors, and coiled cables.\" 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\/tt\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tt\/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\">&euro;<\/span>6,803.00<\/span> + VAT (if applicable)<\/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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?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\/tt\/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\/tt\/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=\"Magnet base.\" 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\/tt\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tt\/product\/magnet-stand\/\" title=\"Magnetic Stand Insize-60-kgf\">Magnetic Stand Insize-60-kgf<\/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\">&euro;<\/span>46.00<\/span> + VAT (if applicable)<\/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=\"\/tt\/wp-json\/wp\/v2\/glossary\/138?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-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\" 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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><strong>Holospectrum<\/strong> \u2014 also called the full spectrum \u2014 is an advanced frequency-analysis technique in <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/rotor-dynamics\/\">rotor dynamics<\/a> that processes simultaneous X and Y (horizontal and vertical) <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/vibration\/\">vibration<\/a> measurements to separate shaft motion into <em>forward<\/em> precession (orbiting in the same direction as rotation) and <em>backward<\/em> precession (orbiting against rotation). Unlike a conventional <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/spectrum\/\">spectrum<\/a>, which shows only vibration magnitude, the holospectrum displays both positive frequencies (forward) and negative frequencies (backward). That extra dimension gives complete information about the direction of a rotor&#8217;s orbital motion \u2014 information that is decisive when diagnosing instabilities, separating forced from self-excited vibration, and characterising rotor-dynamic behaviour.<\/p>\n<p>The technique is used chiefly with <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/proximity-probe\/\">proximity probe<\/a> measurements (XY pairs) on critical turbomachinery, where it exposes phenomena that are flatly invisible in standard single-axis spectra. It is an expert-level tool for rotor-dynamics specialists troubleshooting complex vibration in turbines, compressors, and generators.<\/p>\n<h2>1. Theoretical Basis<\/h2>\n<h3>Forward versus Backward Precession<\/h3>\n<p>The whole technique turns on one idea: a shaft centre traces an <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/orbit\/\">orbit<\/a>, and that orbit has a direction.<\/p>\n<ul>\n<li><strong>Forward precession:<\/strong> the shaft centre orbits in the same direction as shaft rotation \u2014 by far the most common case.<\/li>\n<li><strong>Backward precession:<\/strong> the shaft orbits opposite to the rotation direction, which signals specific, often serious, problems.<\/li>\n<li><strong>Significance:<\/strong> the direction of precession points directly at the excitation mechanism, and therefore at the fault type.<\/li>\n<\/ul>\n<h3>The Limitation of a Standard Spectrum<\/h3>\n<ul>\n<li>A single-axis FFT cannot tell forward from backward precession.<\/li>\n<li>Both appear as the same frequency component on the plot.<\/li>\n<li>The direction information is simply lost.<\/li>\n<li>That leaves a genuine ambiguity in the interpretation \u2014 two very different conditions can look identical.<\/li>\n<\/ul>\n<h3>How Holospectrum Resolves It<\/h3>\n<ul>\n<li>It processes the X and Y measurements together rather than one at a time.<\/li>\n<li>It mathematically separates the directional components.<\/li>\n<li>Forward precession maps to positive frequencies.<\/li>\n<li>Backward precession maps to negative frequencies.<\/li>\n<li>The outcome is a complete characterisation of the rotor&#8217;s motion, with no directional ambiguity.<\/li>\n<\/ul>\n<h2>2. Applications and Diagnostics<\/h2>\n<p>Because direction encodes mechanism, the holospectrum is at its most powerful when a fault is defined by how the shaft moves rather than merely how much.<\/p>\n<h3>Instability Diagnosis<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tt\/glossary\/oil-whirl\/\">Oil whirl and whip<\/a>:<\/strong> appear at negative frequencies, showing the backward precession characteristic of the early instability.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tt\/glossary\/steam-whirl\/\">Steam whirl<\/a>:<\/strong> shows as a <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/sub-synchronous\/\">sub-synchronous<\/a> backward component.<\/li>\n<li><strong>Identification:<\/strong> the holospectrum immediately separates an instability from ordinary <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/unbalance\/\">unbalance<\/a> \u2014 a distinction that can be agonisingly slow to make any other way.<\/li>\n<\/ul>\n<h3>Forced versus Self-Excited Vibration<\/h3>\n<ul>\n<li><strong>Unbalance (forced):<\/strong> a strong forward component at 1\u00d7, with minimal backward content.<\/li>\n<li><strong>Instability (self-excited):<\/strong> a significant backward component.<\/li>\n<li><strong>Distinction:<\/strong> crystal-clear in the holospectrum, ambiguous in a standard spectrum \u2014 see <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/rotor-instability\/\">rotor instability<\/a> for the underlying mechanism.<\/li>\n<\/ul>\n<h3>Rotor Rub Detection<\/h3>\n<ul>\n<li><a href=\"https:\/\/vibromera.eu\/tt\/glossary\/rotor-rub\/\">Rubbing<\/a> often creates backward components.<\/li>\n<li>The friction forces at the contact drive reverse precession.<\/li>\n<li>The holospectrum reveals that rub-related backward motion directly.<\/li>\n<\/ul>\n<h3>Gyroscopic Effects<\/h3>\n<ul>\n<li>Forward and backward <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/whirl\/\">whirl<\/a> modes split to different frequencies under the <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/gyroscopic-effect\/\">gyroscopic effect<\/a>.<\/li>\n<li>The holospectrum shows both modes clearly and separately.<\/li>\n<li>That makes it a powerful way to validate a rotor-dynamic model against reality.<\/li>\n<\/ul>\n<h2>3. Data Requirements<\/h2>\n<h3>An XY Measurement Pair<\/h3>\n<ul>\n<li>Two perpendicular vibration measurements are required \u2014 there is no single-channel shortcut.<\/li>\n<li>They typically come from an XY proximity-probe pair.<\/li>\n<li>The two probes must be mounted 90\u00b0 apart spatially.<\/li>\n<li>Synchronised sampling of both channels is essential.<\/li>\n<\/ul>\n<h3>Relative Phase<\/h3>\n<ul>\n<li>The quadrature relationship between X and Y is what enables direction to be determined.<\/li>\n<li>If X leads Y by 90\u00b0, the precession is forward.<\/li>\n<li>If X lags Y by 90\u00b0, the precession is backward.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/tt\/glossary\/phase\/\">Phase<\/a> accuracy is therefore critical \u2014 an error here corrupts the very thing the holospectrum exists to measure.<\/li>\n<\/ul>\n<h2>4. Reading the Display<\/h2>\n<h3>Holospectrum Layout<\/h3>\n<ul>\n<li><strong>Horizontal axis:<\/strong> frequency \u2014 positive for forward, negative for backward.<\/li>\n<li><strong>Vertical axis:<\/strong> <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/amplitude\/\">amplitude<\/a>.<\/li>\n<li><strong>Zero at centre:<\/strong> zero frequency sits at the middle of the plot.<\/li>\n<li><strong>Right side:<\/strong> forward precession components (+1\u00d7, +2\u00d7, and so on).<\/li>\n<li><strong>Left side:<\/strong> backward precession components (\u22121\u00d7, \u22122\u00d7, and so on).<\/li>\n<\/ul>\n<h3>Typical Patterns<\/h3>\n<h4>Healthy Rotor<\/h4>\n<ul>\n<li>A large forward component at +1\u00d7 from residual unbalance.<\/li>\n<li>Small or absent backward components.<\/li>\n<li>The signature of normal, forced vibration.<\/li>\n<\/ul>\n<h4>Oil Whirl<\/h4>\n<ul>\n<li>A significant component at a negative sub-synchronous frequency.<\/li>\n<li>For example \u22120.45\u00d7 \u2014 backward, at about 45% of rotor speed.<\/li>\n<li>A diagnostic fingerprint for bearing-induced instability in a <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/journal-bearing\/\">journal bearing<\/a>.<\/li>\n<\/ul>\n<h4>Misalignment<\/h4>\n<ul>\n<li>A strong +2\u00d7 forward component.<\/li>\n<li>Minimal backward content.<\/li>\n<li>Confirms that the <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/misalignment\/\">misalignment<\/a> is producing forced, not self-excited, vibration.<\/li>\n<\/ul>\n<h2>5. Advantages<\/h2>\n<h3>Diagnostic Clarity<\/h3>\n<ul>\n<li>Distinguishes instability from unbalance at a glance.<\/li>\n<li>Identifies rotor-rub conditions.<\/li>\n<li>Characterises complex rotor motion that defeats single-axis analysis.<\/li>\n<li>Removes diagnostic ambiguity rather than merely reducing it.<\/li>\n<\/ul>\n<h3>Completeness<\/h3>\n<ul>\n<li>Delivers full information about the orbital motion.<\/li>\n<li>No information is discarded, as it is with single-axis analysis.<\/li>\n<li>The result is a complete rotor-dynamic picture.<\/li>\n<\/ul>\n<h2>6. Limitations<\/h2>\n<h3>It Requires XY Measurements<\/h3>\n<ul>\n<li>It cannot be applied to single-axis data.<\/li>\n<li>It needs proximity-probe pairs, or synchronised <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/accelerometer\/\">accelerometers<\/a>.<\/li>\n<li>That means more instrumentation, and more cost.<\/li>\n<\/ul>\n<h3>Complexity<\/h3>\n<ul>\n<li>It is more involved than a standard spectrum.<\/li>\n<li>It demands a working understanding of precession.<\/li>\n<li>Its interpretation needs genuine expertise.<\/li>\n<li>It is not a routine, everyday analysis technique.<\/li>\n<\/ul>\n<h3>Limited Field of Application<\/h3>\n<ul>\n<li>It is aimed primarily at rotor-dynamic issues.<\/li>\n<li>It is less useful for <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/bearing-defects\/\">bearing defects<\/a> or <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/gear-defects\/\">gear faults<\/a>.<\/li>\n<li>It is a specialised tool, not a general-purpose one.<\/li>\n<\/ul>\n<h2>7. When to Use Holospectrum \u2014 and When Not To<\/h2>\n<h3>Appropriate Cases<\/h3>\n<ul>\n<li>Suspected rotor instability.<\/li>\n<li>Investigation of sub-synchronous vibration.<\/li>\n<li>Diagnosis of a suspected rub.<\/li>\n<li>Troubleshooting of critical turbomachinery.<\/li>\n<li>Validation of rotor-dynamic models against measured behaviour.<\/li>\n<\/ul>\n<h3>Not Needed For<\/h3>\n<ul>\n<li>Routine unbalance or misalignment, which standard methods handle well.<\/li>\n<li>Bearing-defect analysis.<\/li>\n<li>Single-axis measurements, where it cannot be computed at all.<\/li>\n<li>General machinery surveys.<\/li>\n<\/ul>\n<h2>8. Holospectrum and Routine Field Balancing<\/h2>\n<p>It is worth being clear about where the holospectrum sits relative to everyday work. Most rotor problems an engineer meets are ordinary unbalance, correctable on-site with a portable two-channel instrument such as the <a href=\"https:\/\/vibromera.eu\/tt\/product\/balanset-1\/\">Balanset-1A<\/a>, which reads 1\u00d7 amplitude and phase in the machine&#8217;s own bearings and verifies <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/residual-unbalance\/\">residual unbalance<\/a> against the <a href=\"https:\/\/vibromera.eu\/tt\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> grades. The holospectrum enters only when balancing fails to solve the problem \u2014 when a stubborn sub-synchronous or backward component suggests an instability or a rub rather than a heavy spot. In that sense the two are complementary: routine balancing dispatches the common faults, and the holospectrum is reserved for the genuinely rotor-dynamic puzzles that remain.<\/p>\n<p>In summary, holospectrum analysis is an advanced rotor-dynamics technique that gives a complete picture of orbital motion by separating forward and backward precession. It demands XY instrumentation and real expertise, but in return it delivers diagnostic insight \u2014 especially for instabilities and rubs \u2014 that is simply unobtainable from conventional single-axis spectral analysis, making it an essential tool for the specialist working on complex rotor-dynamic problems in critical turbomachinery.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/tt\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about holospectrum (full spectrum), advanced vibration analysis separating forward and backward rotor precession components for detailed rotor dynamics diagnosis.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-138","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/glossary\/138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/glossary\/138\/revisions"}],"predecessor-version":[{"id":101286,"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/glossary\/138\/revisions\/101286"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/media?parent=138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/categories?post=138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/tt\/wp-json\/wp\/v2\/tags?post=138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}