Chapter 6: Operation
SCAN ONE PORT: Move the cursor to SCAN ONE PORT and press SELECT if you wish to display the advertised capability of a LAN device. You can connect to any LAN device using a patch cable or any cable of your choosing. The signal data levels of all active pairs will also be displayed. When scanning one port, the connection can be made to a live hub, switch, or PC without affecting the communication of the other connected devices. See the following paragraphs in this section for examples of advertised capability and the Signal Data Level display.
Figure 6-69. Testing Link Pulses from a Gigabit device.
Figure 6-70. Testing Link Pulses from a 100-Mbps device.
The first step in the scanning process reads the link pulses of the LAN device and displays the advertised capability. LAN devices broadcast their capability in terms of speed, duplex, and other features (termed “advertised” capabilities) to other LAN devices.