Fluke DTX Series - Page 106

DTX Series CableAnalyzer
Technical Reference Handbook
3-32
The test takes noise voltage samples every second on pair
3, 6. The test produces a PASS/FAIL result if the selected
standard specifies a noise limit.
Notes
To extend battery life, connect the ac adapter
when monitoring impulse noise for extended
periods. The tester’s power down timer is
disabled during the impulse noise test.
Monitoring impulse noise without a smart
remote may produce unreliable test results.
To monitor impulse noise:
1 Attach twisted pair link interface adapters to the
tester and smart remote.
2 Turn the rotary switch to MONITOR and turn on the
smart remote; then connect to the testers to the
ends of the cabling.
3 Press
P.
To adjust the noise threshold, press
LStop; then
use
A D to change the value. Press P to
resume testing.
Tip: Fluke Networks recommends a noise threshold
of 30 mV with an average pulse rate below 0.01/sec
for testing 1000BASE-T (Gigabit Ethernet) cabling.
To stop the test at any time, press
I.
Note
If you disconnect the tester and smart remote
during the impulse noise test, it takes several
minutes for the remote to stop testing.
Figure 3-23 describes the impulse noise test results.