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SCAN-LAN VI
NOTE
When the NEXT test is performed, both ends are tested.
6.2.2 V
IEWING
NEXT S
UMMARY
R
ESULTS
The NEXT of each pair combination is compared to the selected cable test
standard and PASS or FAIL is indicated.
6.2.3 M
ARGINAL
T
EST
R
ESULTS
A PASS* or FAIL* result (PASS or FAIL with an asterisk) indicates that a
measured NEXT value is close enough to the Test Standard that it is within
the SCAN-LAN VI’s measurement uncertainty. As a result, the PASS or FAIL
judgment is uncertain, and therefore the SCAN-LAN VI cannot determine
with confidence whether the link conforms to the Test Standard.
To resolve link tests with marginal measured results:
1. Reduce the measurement uncertainty. If you are currently using a Level I-
rated Performance Module, replace it with a Level II-rated Performance
Module and retest. If the test result is still marginal, or if you are already
using a Level II-rated Performance Module, go to the next step.
2. Recheck the link installation, focusing on connection points. Refer to
Chapter 8, Testing Twisted-Pair Cable
, for suggestions on causes for
excessive NEXT. Correct the installation, if possible, and retest.
6.2.4 V
IEWING
D
ETAILED
NEXT R
ESULTS
The worst measured crosstalk is shown in the detailed test display. The display
indicates the frequency of this measurement, the measured value in decibels
(dB), and the test limit.
To view the details of the NEXT test:
F1
F2
F3
F4
Summary of Contents for SCAN-LAN VI
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