4-20 Cabling the Metallic Loop Test Access Ports
HN4000 Hardware Installation Guide 920550-5020 Rev 14
4.7.4 Cabling the MLT Ports for TDR, Tone, and Short Tests - All HN4000e Stack
Figure 4‐15showsastackwithallHN4000eswitches.Inthisconfiguration,youdonotneedto
cabletheMLTportstorunTDR,tone,andshorttestsifyouareusingtheTDR,tone,andshort
testcommands’defaultsofautomaticallysourcingthetestfromthespecifiedPME’sswitch.
For
example,thefollowingcommandrunsatonetestonPMEnumber14ofHN4000eswitch1:
config tone set 2bpme 1/14
Whenyouexecutethiscommand,thePME’shostswitch(switch1)automaticallygeneratesthe
tone.
Figure 4-15 An all HN4000e Switch Stack
TheremaybesituationswhereyouwanttouseaswitchotherthantheoneonwhichthePME
undertestishosted.Inthiscase,youmustcabletheswitches’MLTportsasshowninFigure 4‐
14onpage 4‐19.Thiswouldenableyoutoexecutecommandslikethe
following,whereswitch
3isgeneratingtheTDRsignalforPMEnumber14onswitch1:
config tone set 2bpme 1/14 source 3
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