Easy-to-use Cable Tester Checks Integrity Of Copper Cables Commonly Found In Domestic Commercial Or Industrial Voice Data Or Video Installations Including Telephone Wiring Data Network & Video and security Cabling Advanced Tdr (time Domain Reflectometry) Measures Cable Length & Provides Distance To Fault Information Identifies Wiring Errors Instantly & Displays Results All On One Screen Quickly Determines Which Media Service Is Running Over Cables Such As Isdn Pbx & Poe offers All Standard Copper Testing Including: Coaxial F-type (video) Rj11 and 12 (voice) Rj45 (data) Connectors For Copper Cable Testing Wiremap For Miswires Split Pairs Shorts & Opens Analog Tone Generator Voltage Protection Shielded Cable Testing Single Screen Results