Appendix A. Ethernet Interface ASM-20 Installation and Operation Manual
A-4 Installation and Operation 6/4/99 13:17
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Figure A-6 Ethernet Bridge Layout (BNC option)
LAN Installation For 10BaseT installation, either a straight cable or a cross-cable may be
required. Use a cross-cable when connecting to a port that does not
implement the crossover function internally. Otherwise, use a straight cable.
(Hubs usually implement the crossover function internally while NICs and
other devices do not.)
Switch Settings Set switches according to Table A-2.
Table A-2 DIP Switches Settings
Switch
Number
Name Description Default
Setting
1 SQ/FD ON: Ethernet full-duplex mode
OFF: Ethernet half-duplex mode
OFF
2 CMP ON: Strips padding bits inserted in 64-byte frame
OFF: Transmits frames over WAN as is
ON
3 FIL ON: Passes only frames destined for another LAN
OFF: Disables LAN filter; passes all frames transparently
ON
4(nc) OFF
Note The SQ/FD switch is not used in the Ethernet bridge with the BNC connector
option.
LED Indicators Table A-3 lists the IR-ETH LED indicators and describes their functions.