{"id":4592,"date":"2020-09-22T18:05:00","date_gmt":"2020-09-22T16:05:00","guid":{"rendered":"https:\/\/www.cercle-credo.com\/continuity-test-what-power-for-vfl-pens\/"},"modified":"2022-03-29T15:50:22","modified_gmt":"2022-03-29T13:50:22","slug":"continuity-test-what-power-for-vfl-pens","status":"publish","type":"post","link":"https:\/\/www.cercle-credo.com\/en\/continuity-test-what-power-for-vfl-pens\/","title":{"rendered":"Continuity test: what power for VFL pens?"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-zoomin\" style=\"border:1px solid #e5e5e5;\"><img width=\"370\" height=\"524\" title=\"continuitytest\" src=\"https:\/\/www.cercle-credo.com\/wp-content\/uploads\/2020\/09\/testdecontinuite.png\" alt class=\"img-responsive wp-image-4122\" srcset=\"https:\/\/www.cercle-credo.com\/wp-content\/uploads\/2020\/09\/testdecontinuite-200x283.png 200w, https:\/\/www.cercle-credo.com\/wp-content\/uploads\/2020\/09\/testdecontinuite.png 370w\" sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 370px\" \/><\/span><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:10px;margin-bottom:10px;width:100%;\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_3_4 3_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:75%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.56%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.56%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p class=\"p1\" style=\"text-align: justify;\"><strong><span class=\"s1\">The purpose of this application note is to provide technical and safety details on the choice and use of a visual fault locator (VFL \u2013 Visual Fault Locator) commonly called a \u201cred light pen\u201d used to test fiber continuity. monomode optics (also usable for multimode fibers).<\/span><\/strong><\/p>\n<hr>\n<p class=\"p1\" style=\"text-align: justify;\">Today, <b>mainly class 2 VFL<\/b> laser pens (a reminder on the classification of lasers is proposed in paragraph 3 and in the appendix) are currently used and widely deployed. They comply with the safety level and do not require any protection device. Other pens of higher power and therefore of higher class appear on the market. It seemed important to us to specify their real performance and their conditions of use.<\/p>\n<hr>\n<p style=\"text-align: center;\"><strong>You can download it by completing the form below: <\/strong><\/p>\n<p style=\"text-align: center;\"><div class=\"frm_forms  with_frm_style frm_style_style-formidable\" id=\"frm_form_14_container\" >\n<form enctype=\"multipart\/form-data\" method=\"post\" class=\"frm-show-form  frm_pro_form \" id=\"form_testdecontinuite4a874a47b3ad3514329cabf20d2ecb96132e78abd9162741d97d2\"  >\n<div class=\"frm_form_fields \">\n<fieldset>\n<legend class=\"frm_screen_reader\">Test de continuit\u00e9 : quelle puissance pour les stylos VFL ?<\/legend>\r\n\r\n<div class=\"frm_fields_container\">\n<input type=\"hidden\" name=\"frm_action\" value=\"create\" \/>\n<input type=\"hidden\" name=\"form_id\" value=\"14\" \/>\n<input type=\"hidden\" name=\"frm_hide_fields_14\" id=\"frm_hide_fields_14\" value=\"\" \/>\n<input type=\"hidden\" name=\"form_key\" 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id=\"frm_email_14\" name=\"frm_verify\" value=\"\"  \/>\n\t\t\t<\/div>\n\t\t<input name=\"frm_state\" type=\"hidden\" value=\"O\/QxoKmsxhZIcMNVF9X8QdXCyxCk\/1tLHzQDWetZOmc=\" \/><div class=\"frm_submit\">\r\n\r\n<button class=\"frm_button_submit frm_final_submit\" type=\"submit\"   formnovalidate=\"formnovalidate\">T\u00e9l\u00e9charger la 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