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LB308A
Chapter 2: Overview
2. Overview
2.1 Introduction
Use the 8-Port 10/100BASE-TX Hardened Ethernet Extender Switch in harsh
environments where space is limited.
2.2 Features
The Hardened Ethernet Extender Switch:
• Meets NEMA TS1/TS2 environmental requirements, including temperature,
shock, and vibration for traffic control equipment.
• Meets EN61000-6-2 and EN61000-6-4 EMC generic standard immunity for an
industrial environment.
• Manageable via SNMP, Web browser, Telnet, and RS-232 console port.
• RS-232 console supports command-line interface.
• Ethernet Extender ports are asymmetrical or symmetrical on the VDSL, full-
duplex 59-Mbps downstream/31-Mbps upstream asymmetrical, or full-duplex
50-Mbps symmetrical communications link over an existing copper telephone
line.
• Operates transparently to higher-layer protocols such as TCP/IP.
• Two DIP switches configure local (LOC) and remote (REM).
• Supports 802.3/802.3u/802.3x autonegotiating, 10-/100-Mbps, full-/half-
duplex, auto MDI-MDI-X Ethernet ports.
• Supports 8192 MAC addresses.
• Provides 2 MB of memory buffer.
• Relay output alarms indicate power and port link failure.
• Includes redundant 12–48-VDC power terminal block power inputs and 12-VDC
jack with a 100–240-VAC external power supply.
• Operating voltage and maximum current consumption are: 0.92 A @12 VDC,
0.46 A @ 24 VDC, 0.23 A @ 48 VDC. Maximum power consumption is 11 W.
• Operating temperature range is -40 to +167° F (-40 to +75° C).
• Supports DIN rail and panel mounting installation.