Testing is incomplete without testing for intermittent errors: a cable can pass continuity testing, yet fail intermittence testing. This same cable, if installed, could cause a critical failure - perhaps resulting in loss of life. Testing for intermittent errors is carried out using a continuous rapid stream of short test pulses … each one sweeping through the full set of test points. Known sometimes as the ‘continuous’ test, the test signal itself is sometimes mistakenly believed to be continuous. The higher the pulse rate, the more accurate the result as there is a higher statistical likelihood of ‘capturing’ the random moment of error. Testers that offer an intermittence test mode but at a slow rate will pass cables that fail on systems with high rates. Testers with the highest rates (and therefore most accurate results) will have USB interfaces. Some testers allow this rate to be adjustable, and can be set as fast as 11ms/cycle.
For greatest flexibility, and more intelligible reports, check whether the system allows tolerances to be optionally defined as % or absolute terms, as well as asymmetrically (e.g. +0%/-10%). Asymmetric tolerancing will allow you to pass more product than using more constrained test parameters (e.g. +10%/-10%).
CableEye is an expandable and upgradable diagnostic and Pass/Fail Cable and Harness Test System that’s PC-based. It’s used for assembly, prototyping, production, and QC of standard or custom wire cables and harnesses, and comes in six models:
Low Voltage: M2U-basic, M2U
For diagnostic and Pass/Fail Testing - Find, display, log, & document: continuity (opens, shorts, miswires), and intermittent connections
Low Voltage: M3U, M3UH For all of the above plus resistance (contact, isolation, embedded), and diodes (orientation, forward voltage, reverse breakdown).
Low Voltage and High Voltage: HVX, HVX-21 For all of the above plus HiPot (dielectric withstand voltage and insulation resistance).
Experience CableEye first-hand. See how your own cables and connectors can be auto-detected and accurately represented on our graphic-rich, touch screen compliant GUI. Find cable problems fast, and understand why customers tell us "... we can not live without CableEye" (Kabelservice), declaring it the "... best, easiest to use, system" (Digital Video Products).
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