Black Box BLACK BOX CAT5/5e/6 LAN Performance Verifier Operation, 724-746-5500| blackbox.com

Chapter 6: Operation

First example (previous page): The LPV has found a Gigabit device (1000 Mbps) on Pairs 1, 2 and 3, 6 that is capable of transmitting at 10 Mbps, 100 Mbps, and 1000 Mbps at full- duplex. 1000 Mbps devices use all four pairs.

In Figure 6-70, the LPV has found a 100-Mbps device on Pairs 3, 6 that is capable of transmitting at 10 Mbps and 100 Mbps at half-duplex. Typically, devices that transmit on Pairs 1, 2 are PCs and devices that transmit on 3, 6 are hubs and switches.

Press the down arrow key q to continue.

Figure 6-71. Signal levels of real live data from a Gigabit switch.

Figure 6-72. Signal levels of real live data

from a 100-Mbps switch.

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