NCT-1000/NCT-1020 User Guide
135
YML836 Rev2
In a straight-through cable, wires 1,2,3,4,5,6,7 and 8 at one end of the cable are still wires 1~8 at the other
end. In a crossover cable, the wires of 1,2,3,6 are reversed so that wire 1 become 3 at the other end of the
cable, 2 becomes 6, and so forth.
To determine which wire is wire 1, hold the RJ-45 cable tip with the spring clip facing towards the ground
and the end pointing away from you. The copper wires exposed upwards to your view. The first wire on the
far left is wire 1. You can also refer to the illustrations and charts of the internal wiring on the following page.
Straight-Through Cabling
Figure 3
Wire
Becomes
1
1
2
2
3
3
6
6
Cross-Over Cabling
Figure 4
Wire
Becomes
1
3
2
6
3
1
6
2
Note:
To prevent loss of signal, make sure that the length of any twisted-pair connection does
not exceed 100 metres.
Summary of Contents for NCT-1000
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Page 7: ...NCT 1000 NCT 1020 User Guide 7 YML836 Rev2 Application 2...
Page 105: ...NCT 1000 NCT 1020 User Guide 105 YML836 Rev2 PART III APPENDICES...
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