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CHAPTER 5: Quick Check
5.2 Viewing Quick Check Results
Viewing the results of Quick Check is the same as for Autotest, except that
they cannot be saved. Refer to
Section 4.2
.
M
ARGINAL
T
EST
R
ESULTS
A PASS* or FAIL* result indicates that a measured NEXT or attenuation
value is close enough to the Test Standard that it is within the SCAN-LAN
Vt’s measurement uncertainty. As a result, the PASS or FAIL judgment is
uncertain, and therefore the SCAN-LAN Vt cannot determine with
confidence whether the link conforms to the Test Standard.
The following steps may be taken in order to resolve link tests with
marginal measured results:
1. Reduce the measurement uncertainty. If you are currently using a
Level I-rated Performance Module (PM), replace it with a Level II-
rated PM and retest. If the test result is still marginal, or if you are
already using a Level II-rated PM, 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 and attenuation. Correct the installation, if possible,
and retest.
