35
CHAPTER 3: Cable Tests
(Twisted Pair)
(Coax)
3.2.3 N
OISE
T
EST
This test counts noise impulses (spikes) above a
preset minimum threshold on an idle cable segment.
The default noise-threshold setting is 260 mV; refer
to
Chapter 6
if you want to change this value.
Connect the cable to the appropriate connector
on the Scan-LAN 80. The cable should not be
connected to an active network; the test will
record network traffic as noise impulses.
Anomaly Detected
anoml
54'
Anomaly Detected
1,2 open
23'
3,6 anoml
43'
10BaseT
Содержание Scan-LAN 80
Страница 19: ...15 CHAPTER 3 Cable Tests Wiring 1 2 3 6 1 2 3 6 4 5 7 8 4 5 7 8 1 2 Open 3 6 Straight Thru 4 5 Open 7 8 Open...
Страница 22: ...18 SCAN LAN 80 CABLE SCANNER Wiring 1 2 3 6 1 2 3 6 4 5 7 8 4 5 7 8 1 2 Reversed 3 6 Reversed 4 5 Open 7 8 Open...
Страница 48: ...44 SCAN LAN 80 CABLE SCANNER Figure 5 1 Connecting Unterminated Cable 50 MINIMUM LENGTH...
