User's Manual Part 1

Table Of Contents
Tech-X Flex
®
(NG2) Tech-X Flex User Guide - Firmware v06.50
4-7
Intro
Overview
Wi-Fi
Ethernet
System
IP/Video
MoCA
RF
Specs
Figure 4-4 Ethernet Cable Test - Setup
4.7.2 Results - Ethernet Cable Test
The following table describes the full set of possible results. Note that if Ethernet connectivity is not
possible due to a disconnected cable or any other reason, the results contain pair lengths only.
Table 4-2 Ethernet Cable Test - Results
Result Description
Pair Polarity For each MDI pair in a standard cable (4 pairs total out of 8 conductors), indicates
whether the conductors are connected with the proper “polarity,” where:
Positive - Proper polarity connection
Negative - Reverse polarity
For each pair, the two pins at each physical port are designated “+” and “-”,
according to Ethernet protocol. With a properly-wired cable, the “+” pin on one end
connects to the “+” pin on the other, and likewise for the “-” pins. Note that although
proper polarity is desired, normally an Ethernet interface can detect a reversed
polarity and internally adjust to allow a connection.
Pair Swap For each pair in the cable, indicates the respective mapping to standard Ethernet
channels (1 or 2 sets of transmit and receive channels). For a properly-wired
straight-through cable, the pairs should map sequentially with channels A through D.
Any other mapping may indicate an improperly-wired cable. It is possible that
improper wiring can support 10/100 Mbps but not 1 Gbps Ethernet, because 1 Gbps
requires all four pairs instead of the two used by 10/100 Mbps.
Preliminary issue - Limited distribution only!