EXFO AXS-200/850 Ethernet Test Set - Manual (Page 208)

Tools
198 AXS-200/850
Cable Test Configuration
³
Prop. Delay Threshold (ns): Set the threshold value as the maximum
time for a pulse to reach the far end. If the determined propagation
delay is less than or equal to the threshold value, the test is declared as
PASS. If the determined propagation delay is higher than the threshold
value, the test is declared FAIL. The accepted range is 0 to 1000 ns
with a default value of 1000 ns for 10Mbps, 556 ns for 100Mbps, and
570 ns for 1Gbps.
³
Delay Skew Threshold (ns): Set the threshold value as the maximum
time between the fastest and slowest pairs of a 1000Base-T signal. If
the determined delay skew is less than or equal to the threshold value,
the test is declared as PASS. If the determined delay skew is higher
than the threshold value, the test is declared FAIL. The accepted range
is 0 to 120 ns with a default value of 50 ns.
³
Length Threshold (m/ft): Set the threshold value as the maximum
acceptable cable length. If the determined cable length is less than or
equal to the threshold value, the test is declared as PASS. If the
determined cable length is higher than the threshold value, the test is
declared FAIL. The accepted range is 0 to 120 m or 0 to 393.7 feet with
a default value of 100 m (328 ft).
³
Restore Threshold Defaults: Restores the default configuration values
for Prop. Delay Threshold, Delay Skew Threshold, and Length
Threshold.