AEMC CA7027 Cable Tester

The Fault Mapper Pro® Model CA7027 is a hand-held graphical  TDR (Time Domain Reflectometer) designed for identifying and locating faults on  power and communication cables, given access to one end only.

The Fault Mapper Pro® measures cable length and  indicates the length and distance to cable faults to a range of 9 ft (3 m) to  19,000 ft (6000m) on virtually any type of cable. It injects a series of pulses  into the cable under test. The velocity at which the pulses travel is determined  by the type of cable, which is known as the velocity of propagation (Vp) of the  cable. The Velocity of Propagation (Vp) is adjustable between 1% and 99%  enabling accurate calibration to the cable under test.

Data Sheet




  • 11 range scales indicating cable faults and terminations up to 19,000  ft (6000m) in feet or meters
  • Detects opens, shorts, taps, faulty taps, bridge taps, splitters,  high resistance, wet cables, splices and more
  • Identifies impedance mismatches
  • Works with twisted pair, parallel and coaxial cable
  • Selectable cable impedance (25Ω, 50Ω, 75Ω, 100Ω)
  • Over-voltage protection up to 250V
  • Adjustable cursor assists in locating faults and termination
  • Built-in tone generator for tracing and locating cables
  • Large high-visibility blue electroluminescent backlit display

  • Determine length of cable runs
  • Find cable faults and the distance to them
  • Determine degradation of cables due to moisture and other  contaminants
  • Trace and identify cables
  • Determine telephone cable connections and the length to them