Cable Tester

This topic contains 7 replies, has 5 voices, and was last updated by  Daniel Shwartzberg 1 year, 3 months ago.

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  • #754

    What is the Best recommended Cable Tester?

    Can the Fluke DTX1800 be used as a definitive tester and Certify  HDBaseT Cabling?

    #762
    HDBaseT Alliance
    HDBaseT Alliance

    Hello,

    Any tester for cat cables will work for HDBaseT.  Fluke is definitely a good option in this respect!

    #780

    The videos in the HDBaseT expert section reference cable testers that can specifically test the HDBaseT link.  Can you please elaborate on this?  Is there a list of such products?

    Finally, what criteria would be most critical to test (i.e. what tests should be completed)?  Testing a network cable for 1000 Mbps vs. 1 Gbps vs. 10 Gbps is different.  What tests would be most beneficial to predict HDBaseT performance?

    #784
    HDBaseT Alliance
    HDBaseT Alliance

    Any tester that test Cat cables will work with HDBaseT – there is nothing specific about HDBaseT in terms of testing cables.  HDBaseT was designed to work with Cat5e or above cables that have been certified according to the TIA standards.  Of course, higher grade cables will provide you with better performance (and the same is true for shielded ones).  But you should have no problem with regular cables.  The Fluke is a good option to test for cable (the tester provides the parameters it tests for), and Quantum Data offers testing of the application itself (ie, it will transmit video over your link to test the whole system).  Most cable manufacturers will stand behind their certified cables and guarantee performance, so you shouldn’t have to worry there.  Hope this helps.

    #3860
    HDBaseT Alliance
    HDBaseT Alliance

    As the need from the market arose,  several Alliance members have designed testers specifically for HDBaseT installations.

    A simple google search for “HDBaseT tester” will result in several testers designed to test HDBaseT end-to-end, using the HDBaseT link protocol.

    These testers provide in depth analysis and reports on the HDBaseT link.

    #3864
    Daniel Shwartzberg
    HDBaseT Alliance

    Hi everyone,

    I just wanted to be sure that everything is clear on this topic.

    There are testers for category cables which use Ethernet as the test protocol. They send Ethernet packets across the cable, and so are optimized for testing the performance of the cable for Ethernet installations.

    But the HDBaseT protocol differs from Ethernet. For example, while Ethernet is a symmetrical link (e.g. 10Gb/s in both directions), HDBaseT is asymmetrical (Spec 2.0 is 8Gb/s in the main direction and up to 300Mb/s in the return direction). And there are many other differences between how HDBaseT works and how Ethernet works. So if you take an Ethernet tester to check a cable being fitted in an HDBaseT installation, it will only give you a limited insight into how the cable will perform when running HDBaseT data packets. It will certainly identify very obvious defects in the cable (such as open wires or shorts), but will not be able to fully certify the cable for HDBaseT operation.

    To get a full understanding of the quality of an HDBaseT installation, you need to use  an HDBaseT tester. As written in the previous post, there are a number of testers on the market specifically designed for testing cabling for HDBaseT installations. For example, companies like MSolutions, Quantum Data and Astrodesign offer HDBaseT test equipment. Please refer to their websites to find out which tester best meets your requirements.

    Hope all is clear now!

    Daniel

    #4294

    so would you say that a 90 metre cable that tests and meets the specifications for TIA Cat5e should therefore be capable of running 4k at 4:2:0  ?

    #4295
    Daniel Shwartzberg
    HDBaseT Alliance

    Hi Sean,

    As a general statement, you are correct – HDBaseT was designed to run over standard Cat5e cabling. However, to answer your question fully we need to consider which version of the HDBaseT spec the products on each end of the link support. For example, Spec 1.0 products do not support 4K at anything beyond 70m of Cat5e, while Spec 2.0 products are designed to run 4K over 90m of compliant Cat5e cabling (when I say 4K, I refer to video formats with a pixel clock of 297MHz, such as 4K/30/4:4:4 or 4K/60/4:2:0). And the new Spec 3.0 products now hitting the shelves will run using Cat6a to achieve such cable lengths.

    Another point to take into consideration is whether this is a single Cat5e cable run or a bundle. Cat5e has lower reslience to crosstalk than, say, Cat6a, meaning that when running higher-bandwidth video formats over a bundle of 90m Cat5e cables special care needs to be paid to how the cables are managed/routed in the first 20m from the source (where the signal strength is highest and the crosstalk most extreme). These are the same practises that should be followed for structured cabling, so if you are familiar with those you will be covered for HDBaseT bundling also.

    For more information, may I strongly recommend you take our new online HDBaseT Master Program which covers in detail how HDBaseT works, as well as cabling requirements and installation best practises. You can find out more here: https://experts.hdbaset.org/

    Daniel

     

     

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