User Manual

CableIQ฀Qualification฀Tester฀
Users฀Manual฀
40฀
avv48f.eps฀
A Length฀of฀the฀cabling.฀This฀example฀shows฀
approximate฀length฀(
≈).฀Length฀may฀be฀
approximate฀or฀may฀not฀be฀shown฀(
−฀−฀−)฀if฀the฀
port฀does฀not฀produce฀a฀reflection.฀This฀occurs฀with฀
newer฀hubs฀and฀switches฀that฀use฀common-mode฀
termination.฀
Length฀may฀fluctuate฀or฀be฀obviously฀too฀high฀if฀the฀
port’s฀impedance฀fluctuates฀or฀varies฀from฀the฀
cable’s฀impedance.฀When฀in฀doubt,฀disconnect฀the฀
cable฀from฀the฀port฀to฀get฀an฀accurate฀length฀
measurement.฀
B The฀type฀of฀port฀detected:฀
• 10BASET,฀100BASETX,฀1000BASET:฀An฀Ethernet฀port฀that฀
communicates฀at฀10,฀100,฀or฀1000฀Mb/s฀(megabits฀per฀
second).฀Ports฀may฀support฀multiple฀speeds.฀FDX฀indicates฀
a฀full-duplex฀port,฀which฀can฀transmit฀and฀receive฀data฀at฀
the฀same฀time.฀Speed฀and฀duplex฀information฀are฀reported฀
only฀for฀autonegotiating฀ports.฀
• INACTIVE฀PORT:฀The฀port฀shows฀no฀electrical฀activity.฀The฀
port฀may฀be฀unused,฀or฀the฀device฀may฀be฀turned฀off.฀
• Device:฀The฀port฀does฀not฀appear฀to฀be฀a฀standard฀
Ethernet฀port.฀
• NP:฀A฀“next฀page”฀flag฀was฀detected฀in฀the฀port’s฀
broadcast฀of฀capabilities.฀In฀most฀cases,฀this฀indicates฀the฀
port฀has฀1000BASE-T฀capability;฀however,฀ports฀made฀by฀
some฀manufacturers฀broadcast฀this฀status฀flag฀without฀
supporting฀1000BASE-T.฀฀
C Signal฀direction.฀This฀example฀shows฀a฀port฀that฀can฀
transmit฀or฀receive฀on฀either฀pair฀(Auto-MDIX).฀
-continued-฀
Figure฀15.฀Discover฀Mode฀Results฀for฀Twisted฀Pair฀Cabling฀(cont.)฀