User Manual

CableIQ฀Qualification฀Tester฀
Users฀Manual฀
28฀
Signal฀Performance฀Results฀
avv23f.eps฀
Note฀
Signal฀performance฀results฀for฀cables฀
less฀than฀13฀ft฀(4฀m)฀long฀may฀be฀
unreliable.฀฀
A Qualified/unqualified฀result฀for฀the฀signal฀
performance.฀Signal฀performance฀includes฀
crosstalk,฀insertion฀loss,฀and฀return฀loss.฀For฀
1000BASE-T,฀ELFEXT฀(equal-level฀far-end฀
crosstalk)฀is฀also฀tested.฀
B Information฀about฀the฀signal฀performance:฀
• Qualified฀for฀<application฀name>:฀The฀cabling฀will฀support฀the฀
application.฀
• No฀Signal฀Performance฀tests฀needed฀for฀qualification:฀Appears฀
for฀the฀Telco฀and฀Wiremap฀only฀tests.฀
• Wiring฀fault!฀Not฀tested.:฀The฀tester฀does฀not฀evaluate฀signal฀
performance฀if฀there฀is฀a฀wiremap,฀length,฀or฀delay฀skew฀fault.฀฀
• Connection฀fault:฀A฀localized฀crosstalk฀fault฀was฀detected.฀
Localized฀faults฀are฀usually฀caused฀by฀bad฀connections.฀Check฀
the฀cabling฀at฀the฀location฀given.฀See฀the฀Appendix฀for฀other฀
causes฀of฀crosstalk฀faults.฀฀
• Distributed฀cable฀faults:฀Crosstalk฀or฀an฀impedance฀problem฀was฀
detected฀along฀most฀or฀all฀of฀the฀cabling.฀The฀cabling฀is฀of฀poor฀
quality฀or฀is฀the฀wrong฀category฀for฀the฀selected฀application.฀
-continued-฀
Figure฀11.฀Signal฀Performance฀Results฀
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