Model CA7026 , Cable Fault Mapper®

(Telephone Cable Tester/Graphical TDR)

AEMC® Model CA7026 , Cable Fault Mapper®  (Length Tester, Alphanumeric TDR)


  • Hand-held Graphical TDR(Time Domain Reflectometer)
  • Detects opens and shorts
  • Detects taps, faulty taps, bridge taps, splitters, high resistance, wet cables, splices and more
  • Identifies impedance mismatches
  • Indicates cable faults and terminations up to 11,700 ft or 3500m (user selectable)
  • Works with twisted pair, parallel and coaxial cable
  • Selectable cable impedance (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
  • Auto-Ranging scale
  • Large 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

Product Description:

The Fault Mapper Pro® Model CA7026 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 Model CA7026 measures cable length, and indicates the distance to cable faults and terminations to a range of 11,700 ft or 3500m (user selectable), on virtually any type of cable of two or more conductors. The Model CA7026 shows a reflection profile of the cable under test as an oscilloscope-like trace on a 128 x 64 pixel graphical LCD. A movable cursor can be aligned with points on the trace; the distances displayed will automatically update to the cursor position.The Model CA7026 has a selectable impedance facility allowing it to be matched to the cable under test. This automatically eliminates the transmission pulse from the display, enabling easier identification of short range faults and terminations. The Velocity of Propagation (Vp) is adjustable between 1% and 99% enabling accurate calibration to the cable under test. ***The Model CA7026 incorporates an oscillating tone generator that is detectable with a standard tone receiver, for use in the tracing and identification of cables.

Range @ Vp = 70%
11,700 ft or 3500m (user selectable)
Ranges @ Vp = 70% 670, 1470, 2900, 5830 & 11,700 ft(220, 440, 870, 1750 & 3500m)
Resolution Approximately 1% of selected range
±1% of range
Range Selection Automatic range selection against cursor position
Minimum Cable Length 12 ft (4m)
Minimum 3 pixel return on a fault at 6000 ft (2000m)
Vp (Velocity of Propagation
Adjustable from 0 to 99% in 1% steps
Output Pulse
+5V into an open circuit or +1.5V into 50Ω load; 25ns min to 2.15μs dependent on range
Output Impedance
Selectable between 50, 75 & 100Ω
Tone Generator
Oscillating tone 810 to 1110Hz
Scan Rate
Single shot or 6.7 pulses per second(operator selectable)
Voltage Warning
Triggers @ >10VAC/DC
Display Resolution
128 x 64 pixel graphical LCD
Display Backlight
Blue electroluminescent
Power Source
4 x 1.5V AA Alkaline batteries
After 3 minutes
English, French, German, Spanish, Portuguese, Italian
Battery Life
Standby mode >4000 hrsContinuous testing >7.5 hrs
Storage Temperature
-4° to 158°F (0° to 70°C); 5 to 95% RH non-condensing
Operating Temperature
32° to 112°F (0° to 40°C); 5 to 95% RH non-condensing
6000 ft (2000m) max
6.5 x 3.5 x 1.5″ (165 x 90 x 37mm)
12 oz (350g)
Safety Ratings
EN 61010-1, EN 60950, EN 61326-1
CE Mark
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