JDSU NT850 User's Guide download pdf (Page 36)

Chapter 2 Operation

Network Connectivity

20 LanScaperPRO Network Tester User’s Guide

Network Connectivity

The LanScaperPRO recognizes Auto-Negotiation using

Fast Link Pulses to report advertised Ethernet capability.

The LanScaperPRO also supports auto MDI/MDI-X

protocol to allow for connection to a hub, switch, or NIC

with a straight through or crossover cable. The LanScap-

erPRO operates using 10 base-T or 100 base-Tx for all

network transmissions.

Notes About Voltage Checking

All tests start with a check for voltages on the pins on the

tester’s jack. If found, the message -Voltage Found-

Press Test to run PoE Test appears, and the only

option for the user is to press the TEST key to start the

PoE test to determine what type of interface or what volt-

ages are present on the jack. The exception to this

behavior is in the Port Discovery mode, in that some volt-

ages on specific pins will be identified as potential non-

Ethernet devices. See “Performing Port Discovery Tests”

on page 23 for more information.

NOTE

If a Cable Test is started while connected to a PoE

source device, the discovery voltage put on the cable

may not be detected by the LanScaperPRO and can

cause erroneous test results.

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JDSU NT850 User's Guide Page 36