Time Domain Reflectometers

TDR (time-domain reflectometer) cable fault locators are electronic instruments that locate faults in metallic cables (such as a twisted wire). They use time-domain reflectometry (reflection of sound waves) to detect issues in cables. TDR cable fault locators are commonly used to locate issues in a connector, printed circuit board, or other electrical paths.

How do TDR cable fault locators work?

TDR cable fault locators work by measuring the reflection of waves along a conductor. To measure the reflections, the TDR will transmit a signal to the conductor and listen for any reflected sound waves as they return. If the conductor is operating correctly, there will be no reflection displayed on the screen of the cable fault locator and the incident signal of the cable will be discharged. If there are reflections present, then the signal will be reflected to the TDR fault locator and diagnosed for errors that will be displayed on the screen.

When are TDR cable fault locators used?

TDR cable fault locators are commonly used for in-place testing of very long cable, where the length of cable to be tested makes them impractical to remove.

Why Choose RS Components for a Time Domain Reflectometer?

RS Comprehensive range of TDR’s available from Megger, with our technical advisors on hand to answer questions or if you need advice. RS Components offers free next day delivery.


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Description Price Best Accuracy Maximum Range Minimum Pulse Width Pulse Amplitude Output Impedance Velocity Factor/Propagation Velocity Interface Type Battery Life Battery Type Height Length Minimum Operating Temperature Model Number p Weight
RS Stock No. 764-2825
Mfr. Part No.1001-788
BrandMegger
£980.00
Each
Units
- 5000m 4000ns 5V Pk-Pk 25 Ω, 50 Ω, 75 Ω, 100Ω 0.99 - 14 h AA 230mm 115mm -15°C TDR1000/3 600g
RS Stock No. 764-2834
Mfr. Part No.1002-227
BrandMegger
£635.00
Each
Units
±1 % 5000m 4000ns 5V Pk-Pk 25 Ω, 50 Ω, 75 Ω, 100Ω 0.99 - 14 h AA 230mm 115mm 15°C TDR500/3 600g
RS Stock No. 764-2828
Mfr. Part No.1001-789
BrandMegger
£1,000.00
Each
Units
- 5000m 4000ns 5V Pk-Pk 25 Ω, 50 Ω, 75 Ω, 100Ω 0.99 - 14 h AA 230mm 115mm -15°C TDR1000/3P 600g
RS Stock No. 891-9769
Mfr. Part No.1005-021
BrandMegger
£3,330.00
Each
Units
±1 % 20000m - - 25 Ω, 50 Ω, 75 Ω, 100 Ω, 125 Ω, 140Ω 0.2 → 0.99 - 12 h Li-Ion 55mm 290mm -15°C TDR2050 1.7kg
RS Stock No. 891-9772
Mfr. Part No.1007-077
BrandMegger
£2,645.00
Each
Units
±1 % 20000m - - 25 Ω, 50 Ω, 75 Ω, 100 Ω, 125Ω 0.2 → 0.99 - 12 h Li-Ion 55mm 290mm -15°C TDR2010 1.7kg
RS Stock No. 181-5019
Mfr. Part No.1007-068
BrandMegger
£2,430.00
Each
Units
±1 % 20000m - - 125Ω 0.2 → 0.99 USB 12 h Li-Ion 55mm 290mm -15°C TDR2000/3P 1.7kg
RS Stock No. 181-5018
Mfr. Part No.1007-064
BrandMegger
£2,360.00
Each
Units
±1 % 20000m - - 125Ω 0.2 → 0.99 USB 12 h Li-Ion 55mm 290mm -15°C TDR2000/3 1.7kg