• 1001-790
  • Usually ships in 1-2 weeks



  • Dual cursors for pinpointing faults
  • Auto set-up for instant use
  • 2 ns pulse width virtually eliminates dead zones
  • Unique trace HOLD feature for comparison between cables
  • IP54 rating
  • Designed for use on all metallic cable pairs
  • Ranges: 30ft, 75ft, 300ft, 750ft, 3000ft, 7500ft, and 15,000ft
  • ±1% of range accuracy
  • 5 to 122°F (-15 to 50°C) operating temp

What's in the Box

  • Hard carry case
  • Miniature clip test lead set
  • Bed of nails test lead set
  • Socket BNC to 2x4mm 50Ohm
  • User guide CD


The Megger CFL 510G Time Domain Reflectometer is a hand held, compact Time Domain Reflectometer for locating faults on metallic cables. It has a minimum resolution of 0.1m/0.3ft and a 5km/15,000ft maximum range depending on velocity factor selected and cable type.

Four output impedances (25, 50, 75, and 100Ω) are available and a velocity factor between 0.2 and 0.99 will meet any cable test requirements.

The CFL510G has a simple selection option which, together with a four-way control switch, offers an intuitive operation for the user.

This CFL510G is primarily designed for linemen in both the communication and power industries. Specific capabilities include:

Telephony: Provides fast and accurate results when uncovering transmission related problems. Designed to be carried on a linesman's belt and used in the first line of defense when diagnosing and locating cable faults. Specific line activities by this unit are:

  • Bridge taps and splices
  • Presence of water in the cable
  • Opens in tip/ring or sheath
  • Shorts between tip, ring, and/or sheath
  • Capacitive networks
  • Load coils
  • Wet splices and high-resistance splices

CATV/Cellular: Ideal for testing the physical integrity of cables within a network. The unit is also capable of locating illegal cable taps. Specific cable conditions identified include:

  • Bends or crimps in the cable
  • Cuts or shorts in the cable
  • Taps and splits
  • Water saturation

Power: An ideal tool for identifying faults on secondary power cables. This unit identifies:

  • Burnouts in aluminum conductors
  • Good splices, wet splices, and high-resistance splices
  • Shorts between phases