2500 feet: CAT-5 Twisted Pair 2000 feet: 12/2 ac Wire 1000 feet: RG-6/U TV Coax 500 feet: RG-174/U Coax Minimum Length: No minimum length Minimum non-zero 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 O drive impedance, 6 V maximum pulse height Low Battery: Indicator flashes when battery voltage falls below 4.1 V Tone Injection: Approximately 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 Operating Storage: 32 ?F to 131 ?F (0 ?C to 55 ?C) -40 ?F to 158 ?F (-40 ?C to 70?C) |