Struggling to identify faults, validate polarity or ensure quality mechanical connector terminations in your fiber optic cables? Visual Fault Locators (VFLs) are a valuable tool that make troubleshooting fast and efficient. Let's dive into everything you need to know about mastering VFLs. Common Indicators of a Cable Break Signal Loss or Interruption: If data transmission is interrupted, it could indicate a break or severe bend. Physical. Finding a fiber fault typically involves the following steps: 1. However, physical damage can disrupt this infrastructure and cause significant network issues. When fiber cables sustain damage, specialized repair techniques help. To ensure the quality and continuity of fiber optic services, it is essential to identify and locate fiber optic cable faults as quickly and accurately as possible.