Ethernet Connection Specification; Cable Requirements And Connection; Ethernet Cable Specification - Vaisala K-PATENTS PR-23 Series Instruction Manual

12 Ethernet connection specification

12 Ethernet connection specification
The Ethernet connection enables data download from a DTR to a computer. The con-
nection works both directly between DTR and computer or via a hub or switch, local
area network (LAN), wireless network (WLAN) or fiber Ethernet.
Any type of computer (PC, Mac, PDA, mainframe...) with a compatible network con-
nection can be configured to download data from the DTR. This document gives all
the specifications necessary to write a communications program for downloading
purposes. It is also possible to get a ready-to-install communications software from
Vaisala.

12.1 Cable requirements and connection

12.1.1 Ethernet cable specification

The DTR uses a standard Ethernet cable (10/100BASE-T Cat 5e UTP cable with RJ45
connectors). The maximum cable length is 100 m.
Ethernet connection is similar to that of a computer/PC:
Use cross-over Ethernet cable to connect the DTR directly to a computer (Figure 12.1).
If you are connecting the DTR to a LAN (Local Area Network) via a wall socket, use
straight-through Ethernet cable (Figure 12.2).
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Cross-over
cable
Figure 12.1 Connecting DTR to a computer.
LAN
Figure 12.2 Connecting DTR to LAN.
Straight-through
cable
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