AS NZS 14763.3:2017 pdf free

AS NZS 14763.3:2017 pdf free.Information technology – Implementation and operation of customer premises cabling
Dust, dirt and other contaminants at the interfaces to the cabling under test or at interfaces of the test cords and at the interface to the test equipment may produce misleading results and in some cases damage the cabling under test.
Connector end faces on the test cords shall be inspected in accordance with Annex B. If they are dirty or contaminated they should be cleaned following the recommendations of Annex H and re-inspected. If the connectors on the test cords are damaged and/or fail to meet the requirements of Annex B, the test cords shall be replaced.
Connector end faces on the cabling under test shall be inspected in accordance with Annex B.If they are dirty or contaminated they should be cleaned following the recommendations of Annex H and re-inspected in accordance with Annex B. If the connectors on the cabling under test are damaged and/or fail to meet the requirements of Annex B,then the failure shall be reported with the recommendation that the connector be replaced.
External effects (for example, environmental, electromagnetic or physical) can affect the test equipment and thereby influence the measured results. Test equipment shall be operated per manufacturer’s specifications. Unless manufacturer specifications provide other information,test equipment shall be allowed to stabilise at the test environment for at least 15 min prior to readings being taken.
The tail test cord shall be
a) longer than the attenuation dead zone of the OTDR (see Annex C for further details),
b) long enough for a reliable straight-line fit to be made to the backscatter trace following the dead zone (C3 to C4 in Figure 11)， so that reliable attenuation measurements may be carried out). For example, in multimode installations the length of the tail test cord should be at least 75 m. For single-mode fibre installations the length of the tail test cord should be at least 150 m,
c) terminated at one end with one or more reference connectors compatible with the interface to the installed cabling.AS NZS 14763.3 pdf free download.