LPT-3000 Remote User
’
s Guide
26
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Chapter 5. Interface
1. TCP/IP Connection with an External Control Device
Communication is possible by connecting the RJ-45 connector on the rear panel of the analyzer to the
RJ-45 connector of your computer by using a LAN cable.
The table below shows connection between standard, straight-through wiring and cross-over wiring
based on EIA/TIA 568B wiring information. Cross-over cable is used when repetitively connecting hub or
for point-to-point connection without a LAN hub.
Standard, Straight-Through Wiring (each end)
Signal Name
RJ-45 Pin #
Wire Color
Pair #
RX+
1
white/orange
2
RX-
2
orange
TX+
3
white/green
3
TX-
6
green
Not
Used
4
blue
1
5
white/blue
7
white/brown
4
8
brown
[Table 5-2] Straight-Through Cable (Unshielded-twisted-pair(UTP) cable with RJ-45 connectors)
Cross-Over Wiring
Connector A
Connector B
Signal Name
RJ-45 Pin #
RJ-45 Pin #
Signal Name
RX+
1
3
TX+
RX-
2
6
TX-
TX+
3
1
RX+