KB12 Long Cable Testing - Knowledge Base article #12.
This article describes how to test very long cables. The standard autotest is supported by the TestPro up to 600m. There is also a special test mode for cables from 500m to 1000m in length. These situations are becoming more common with the growth in Cat 3 IoT and low speed building automation applications. Testing of these longer cables typically will require a special test limit, as using Standards-based limits will fail due to Length, Delay, Resistance and Insertion Loss. Please contact AEM technical support at customercare@aem-test.com for information on custom limits. The steps for using the Long Cable test mode are outlined below.
- On the TestPro Main unit, press Settings, then Test Settings.
- Look for Long Cable Mode, then turn on Long Cable Mode.
- Important! Repeat steps 1 and 2 above for the TestPro Remote unit. Both Main and Remote must be set to Long Cable mode.
- Perform project Setup as usual, selecting the correct Test Limit and Cable in the project profile.
- Select Cable Certification, then Autotest. The results will be displayed. In the example here, we see a failed result when using a Standards-based test limit. Please contact AEM for information about custom limits for long cables.
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KB12 Long Cable Testing