Identifying Hub Port Connections - Fluke DSP-4100 User Manual

DSP-4000 Series
Users Manual

Identifying Hub Port Connections

The hub port locator helps you determine which port a cable is connected to at a
hub. The locator sends a link pulse to the hub, causing the port's LED to blink.
To identify a hub port connection, proceed as follows:
1. Attach a traffic link interface adapter (such the DSP-LIA013) to the test tool.
2. Turn the rotary switch to MONITOR.
3. Use D to highlight the hub port locator selection; then press E.
4. Use a patch cable of the correct impedance to connect the test tool to the
network as directed on the display.
5. Locate the connected port by finding the flashing LED on the hub's LED
panel.
Monitoring Impulse Noise
The Monitor Impulse Noise function allows you to monitor electrical noise on
inactive twisted pair cabling. Pair 3, 6 is monitored.
The noise test takes noise voltage samples every second. Voltages that exceed the
impulse noise threshold are regarded as noise "hits." If the 10BASE-T standard is
selected, the noise test results include a pass or fail indication. A fail result is
displayed if more than two noise hits are detected in a 10-second interval.
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