![]() ![]() Field instruments using these technologies typically require paired-conductor cables to measure length. Generally, hand-held, cable length measurement instruments use capacitance or time domain reflectometry (TDR) technology. Finally, the experience gained through measuring cable lengths in the field may improve the installers’ ability to estimate future jobs more accurately. ![]() A cable length measurement can also identify cable faults and damage by measuring the length of a cable to an open or short fault as may be required when a cable is severed or damaged.įield-based cable length measurements on freshly installed cable runs provide immediate, accurate billing information, reducing time required to issue invoices, thereby improving cash-flow. This helps prevent callbacks for troubleshooting of poor performing networks or re-installation requests due to non-compliance with cabling standards. A need to measure cable length can arise when an installer wants to simply know the amount of cable remaining on an open spool or in a box, to ensure that a sufficient amount of cable is on-hand before starting a job.Ī quantitative measure of cable length for a freshly installed run can be used to ensure compliance with internationally recognized standards such as TIA/EIA-568 which specifies maximum recommended cable length runs.Ī quick length measurement can identify or prevent cabling runs that are out of specification.
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