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  2. Fluke Corporation - Wikipedia

    en.wikipedia.org/wiki/Fluke_Corporation

    Fluke Corporation is an American manufacturer of industrial test, measurement, and diagnostic equipment, including electronic test equipment. It was started in 1948 by John Fluke while he was employed at General Electric .

  3. Cable tester - Wikipedia

    en.wikipedia.org/wiki/Cable_tester

    A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable. More advanced cable testers can measure the ...

  4. Copper cable certification - Wikipedia

    en.wikipedia.org/wiki/Copper_cable_certification

    The delay skew test is used to find the difference in propagation delay between the fastest and slowest set of wire pairs. An ideal skew is between 25 and 50 nanoseconds over a 100-meter cable. The lower this skew the better; less than 25 ns is excellent, but 45 to 50 ns is marginal.

  5. Cable fault location - Wikipedia

    en.wikipedia.org/wiki/Cable_fault_location

    The conventionally used aid in cable fault testing and location is the cable test van. The van is installed with conventional cable measuring systems for quickly reaching the location of any cable fault. In 20 years that followed, over 2000 fault location vehicles were manufactured, more than half of which were intended for the former USSR.

  6. Time-domain reflectometer - Wikipedia

    en.wikipedia.org/wiki/Time-domain_reflectometer

    These traces were produced by a commercial TDR using a step waveform with a 25 ps risetime, a sampling head with a 35 ps risetime, and an 18-inch (0.46 m) SMA cable. [9] The far end of the SMA cable was left open or connected to different adapters. It takes about 3 ns for the pulse to travel down the cable, reflect, and reach the sampling head.

  7. VLF cable testing - Wikipedia

    en.wikipedia.org/wiki/VLF_cable_testing

    The on-test failure rates on a cable system are in the range of 0.2 to 4% for 30 min tests performed at the IEEE 400.2 voltage levels. IEEE Std. 400.2 provides suggested time and voltage test levels but exact parameters are not possible since defect growth rates are not known and can vary widely.

  8. The best artificial Christmas tree we've ever tested is 40% ...

    www.aol.com/lifestyle/balsam-hill-black-friday...

    The discount you unlock will be dependent on how you customize your tree. We tested the 6.5' tree with clear incandescent lights. If you opt for the 6.5' tree without lights, it's only $299 today ...

  9. Attenuation-to-crosstalk ratio - Wikipedia

    en.wikipedia.org/wiki/Attenuation-to-crosstalk_ratio

    Attenuation-to-crosstalk ratio (ACR) is a parameter that is measured when testing a communication link, which represents the overall performance of the cable. [1] AcR is a mathematical formula that calculates the ratio of attenuation to near-end crosstalk for each combination of cable pairs. [ 2 ]