Time Domain Reflectometer (TDR) 3271 - Cable Fault Finder


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What's special about this fault finder?

  • Low cost digital cable length meter / TDR
  • Built-in tone generator for cable tracing & identification
  • Compact, ergonomic design - weighs less than 8 oz.
  • Simple operation with automatic distance display
  • Internal library of 39 standard cable types
  • Click for More Features

This TDR is a hand-held Digital Cable Length Meter / TDR Fault Locator designed to both measure the length of copper communication cables and distance to a fault. Advanced signal processing techniques enable it to identify opens and short circuits, and directly indicate the fault distance on an alpha-numeric LCD.

TR-3271 TDR- Cable Length Meter and Tone Generator 6-1/2" x 9-3/4" x 3" 1.2 lb

This LAN Tester is not intended for use on powered wires or cables. All wires or cables MUST be non-powered, non-grounded and non-connected.



TR-10-4275 Universal Carrying Case 7-1/2"H x 6"W x 1-1/2"D 0.25 lb

  • Suitable for testing all types of communication cables
  • CE rated, UL listed
  • 3-year manufacturer warranty against defects

An internal library of standard cable types enables accurate measurement on communication cables without the necessity of entering Velocity of Propagation (VOP) information. For non-standard cables, the VOP is adjustable from 0-99%. The Triplett TDR incorporates an oscillating tone generator, that is detectable with a standard tone probe such as the Triplett Hound or Hound 2 Probe, for use in the tracing and identification of pairs within a cable. Housed in a tough ABS plastic case and supplied complete with test leads and a protective tool-belt holster, the Triplett TDR is designed and manufactured to international standards for quality, safety, and reliability.


Approximate Range Coaxial Cable 6400 ft
Structured Wiring 2500 ft
Telephone Cable 2500 ft
Resolution 1 ft < 300 ft & 3 ft > 300 ft
Accuracy ± 2 feet - Cables up to 10 ft
± 5 feet - Cables 10 to 200 ft
± 3% - Cables longer than 200 ft
Cable Library 39 Standard Cable Types
Output Impedance 50, 75 & 100 Ohms
Velocity of Propagation Adjustable 0 to 99%
Tone Generator Oscillating 810 - 1110Hz
Display Dot Matrix LCD
Connector Type BNC
Power Supply 1 - 9 Volt Battery
Battery Life Approx. 2000 Tests
Operating Temperature 5 to 122 deg. F
Storage Temperature -4 to 158 deg. F
Dimensions 8 x 3 x 1.5 inches
Weight 8 oz.
Safety IEC61010-1
EN 60950
EMC: BS/EN 61326-1
Includes Padded Cordura Holster, Test Lead Adaptor w/ Alligator Clip, 9V battery







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by PowerReviews
Triplett-JewellCable Length Meter And Tone Generator

(based on 1 review)

Ratings Distribution

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  • 1 Stars



Reviewed by 1 customer

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Paid for itself

By Rick

from Fort Lauderdale

About Me Low bandwidth user


  • Compact
  • Easy To Set Up


  • None so far

Best Uses

  • General troubleshooting

Comments about Triplett-Jewell Cable Length Meter And Tone Generator:

Bought this for a specific troubleshooting job and it worked well beyond expectation. It found the problem in moments, paid for itself faster than it took to buy it!

  • Primary use:
  • Business

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