52
SCAN-LAN Vt
Noise results for all selected cable types are compared to the IEEE 802.3
10BASE-T impulse noise specification. The default noise-threshold setting
is 260 mV. Refer to
Chapter 9, Setup
, for information on how to change
this value.
Noise reports time duration of the test, average number of impulses in the
last second, peak number of impulses in any one second, and the time of
occurrence since the start of the test.
6.6.1 R
UNNING
N
OISE
The Noise test runs continuously until stopped by the user.
1. If testing a twisted-pair cable, connect one end of the cable under test to
the main unit and the other end to the remote unit. Set the remote
unit’s dial to REMOTE.
2. Set the main unit’s dial to EXTENDED FUNCTIONS. Scroll through
the list of functions until NOISE is highlighted.
3. Press ENTER to select the test. The test begins immediately. (Press the
arrow keys to change the cable test standard.)
NOTE
The cable should not be connected to an active network during the Noise
test, because the test will record network traffic as noise impulses.
F1
F2
F3
F4
