User Manual

CableIQ฀Qualification฀Tester฀
Users฀Manual฀
56฀
Locating฀Crosstalk฀and฀Impedance฀
Faults฀on฀Twisted฀Pair฀Cabling฀
The฀Find฀Crosstalk฀Fault฀and฀Find฀Impedance฀Fault฀
functions฀let฀you฀quickly฀check฀cable฀pairs฀for฀crosstalk฀
and฀impedance฀faults฀on฀twisted฀pair฀cabling.฀
Crosstalk฀is฀unwanted฀signal฀transmission฀between฀cable฀
pairs.฀Crosstalk฀can฀cause฀transmission฀errors฀in฀twisted฀
pair฀networks.฀
Impedance฀is฀electrical฀resistance฀to฀ac฀signals,฀such฀as฀
data฀and฀CATV฀transmissions.฀Impedance฀changes฀cause฀
signal฀reflections฀that฀can฀disrupt฀network฀operation฀and฀
cause฀poor฀CATV฀reception.฀฀
To฀find฀crosstalk฀or฀impedance฀faults:฀
Note฀
If฀you฀use฀patch฀cords฀at฀the฀near฀or฀far฀end฀
during฀crosstalk฀or฀impedance฀tests,฀Fluke฀
Networks฀recommends฀patch฀cords฀at฀least฀2฀m฀
long.฀
1 Connect฀the฀tester฀to฀twisted฀pair฀cabling.฀A฀
wiremap฀adapter฀or฀ID฀locator฀is฀not฀required.฀
2 Turn฀the฀rotary฀switch฀to฀DIAG.฀
3 Use฀
D฀to฀highlight฀Find฀Crosstalk฀Fault฀or฀Find฀
Impedance฀Fault;฀then฀press฀H฀or฀J.฀
4 To฀change฀the฀transmission฀standard,฀press฀
H฀or฀
J,฀use฀AD฀to฀select฀a฀standard;฀then฀press฀
H.฀
5 To฀select฀a฀cable฀pair฀or฀pairs฀to฀test,฀press฀
D฀to฀
highlight฀the฀pair(s),฀press฀H฀or฀J,฀use฀AD฀
to฀select฀a฀pair฀or฀pairs;฀then฀press฀H.฀
6 Press฀
P฀to฀start฀the฀test.฀
Table฀3฀describes฀the฀crosstalk฀and฀impedance฀fault฀
messages.฀
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