Bad patch cord at main / remote reported on DTX CableAnalyzer
NOTA: If you are testing using a 500 MHz test limit, please update your testers first.
When running an Autotest using the Channel Adapters, you may see Bad patch cord at main or Bad patch cord at remote.
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Una ejemplo de pantalla se muestra a continuación:
- La causa es (las torsiones no mantenidas) una terminación baja del conector RJ45 en el latiguillo.
- Este latiguillo no se certificó.
- Los estándares exigen a los fabricantes de comprobantes eliminar los efectos del adaptador de canal.
- Eso incluye la clavija RJ45 insertado en el adaptador de canal.
- ¿Qué sucede si ese conector RJ45 no se termina bien? Nada. Mientras el resto del enlace esté bien, debemos informar de un PASA.
- However, the DTX CableAnalyzer will detect a poorly terminated patch cord.
- The DTX CableAnalyzer takes a look in the Time Domain to see how good/bad the NEXT is in just the Channel Adapters.
- If it exceeds a pre-dertimed level*, it will not implement the Channel Adapter cancellation and give the warning above.
- Solución a mensaje de error de latiguillo: reemplazar/reparar latiguillo.
* Predetermined level
The trigger value is 34 dB @ 100 MHz in the Channel Adapter for Category 5e and 6. This is quite a relaxed value. To trigger this warning, the termination of the RJ45 plug must be significantly less than desirable. For Category 3, this is relaxed even further to 25 dB @ 100 MHz. For Class F, it is set to 52 dB @ 100 MHz. We implemented a new trigger value of 28 dB @ 100 MHz for Category 6A / Class EA in Version 2,22. It was previously set at 34 dB which was too sensitive.
