可用于長達 2500 英尺（762 米）的兩芯或多芯電纜
可從任何電纜線對的一個末端瞬間測量出離開路或故障位置的距離
取得的 SmartTone™ 音頻發(fā)生器能夠可靠識別線對
測量電纜橋架上的電纜距離
電源接通時持續(xù)測量
顯示距離讀數(shù)而不是波形
大號 LED 顯示屏
高電壓檢測
防潮
單按鈕操作
附加的電源線選件可用于同軸電纜（F 連接器）及其他應用。
產品功能
這是一種易于使用、價格具有競爭力的三合一工具，將故障定位儀、電纜導線管理器和采用 SmartTone™ 技術的音調發(fā)生器組合在一起。只需從任何兩芯或多芯電纜的一端，即可在長 2500 英尺（7620 米）的距離內進行測量。易于在電氣電線、線、安全電線和同軸電纜上找到離開路或短路位置的距離。結果以距離讀數(shù)的形式顯示，而不是顯示波形，因此，它是供對時域反射測量 （TDR） 不熟悉的技術人員使用的理想工具。無需拉動新的電線或盲目地將墻壁打開，即可找到和修復電纜問題。由于在電源接通時持續(xù)進行測量，因此更易于發(fā)現(xiàn)間歇故障。
非常適用于卡車和倉庫中的電纜存貨管理，可通過快速評估需求和更精確地管理電纜存貨，針對各種任務進行安排。取得的 SmartTone 技術提供了 5 種不同音調，以便對導線和線對進行精確識別，甚至在帶電電纜附近。 在將導線接觸在一起以及將電纜對的遠端瞬時短接時，SmartTone 技術將改變所發(fā)出音頻的音調。通過從探頭聽到的這種音調變化，能夠可靠地確認正確的電纜對。如果意外地夾在一個通電線對上（高達 250VAC），那么測量工具中的電壓檢測功能將立即發(fā)出一個聲音報警。
Power of operation 4 AA alkaline batteries, provide 50 hours Reverse Battery Protection No damage to the tester will occur if the batteries are installed backwards. Input Protection 250 V rms ac, continuous or intermittent Moisture If the tester is exposed to water, some may get inside, but it will suffer NO DAMAGE. See the moisture notes in the Maintenance section. Impedance Range 35 Ω to 330 Ω with auto-compensation within this range. Cables with an impedance outside this range will not be properly tested and may produce erratic or incorrect readings. Maximum Length 2500 feet on most cable types, and 500 feet on very lossy cables. The tester will feet on very lossy cables. The tester will display –Err if the cable is too long to be correctly measured. Representative Maximum 2500 feet: CAT-5 Twisted Pair Minimum No minimum length Minimum non-zero Length reading is 2 feet Length Accuracy ±2 feet for cables less than 10 feet ±5 feet for cables longer than 10 feet and shorter than 200 feet ±3 % and ±5 feet for cables longer than 200 feet High Voltage Detection An ac voltage of more than 5 V rms will trigger the High Voltage Warning. Measurement Rate Maximum of 4 complete measurements per second, decreasing to 2 seconds per measurement based on cable size and uniformity. VOP Adjustable from -20- to -99-, retained during power off. Default to -66- when batteries are changed. Measurement Technology Time Domain Reflectometry （TDR） with 50 Ω drive impedance, 6 V maximum pulse height. Low Battery Indicator flashes when battery voltagefalls below 4.1 V Tone Injection Approximay 1 kHz at an amplitude of 80 % of battery voltage. Variable frequency and cadence. Tone characteristic is changed as cable condition changes to “normal-open” from any other condition. Cable Type Virtually all two or more conductor cables Temperature Range Operating Storage 32 °F to 131 °F （0 °C to 55 °C） -40 °F to 158 °F （-40 °C to 70 °C） Humidity Operating Storage 0 % to 80 % 0 % to 100 % Weight 1 lb with batteries and clip leads Operating Altitude 10,000 ft max Certifications and Compliance Conformité Européenne. Conforms to relevant European Union directives. CAN/CSA-C22.2 No. 60950-1-03 CAN/CSA-C22.2 No. 1010.1-92 CSA-C22.2 No. 1010.1B-97, UL/ANSI 3111-1
Cable Length
2000 feet: 12/2 ac Wire
1000 feet: RG-6/U TV Coax
500 feet （150 meters）: RG-174/U Coax
