Appendix A. Ethernet Interface

ASM-20Installation and Operation Manual

 

 

4

3

2

1

 

 

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

Name

Description

Default

Number

 

 

Setting

 

 

 

 

 

1

SQ/FD

ON: Ethernet full-duplex mode

OFF

 

 

OFF: Ethernet half-duplex mode

 

 

 

 

 

 

 

2

CMP

ON: Strips padding bits inserted in 64-byte frame

ON

 

 

OFF: Transmits frames over WAN as is

 

 

 

 

 

 

 

3

FIL

ON: Passes only frames destined for another LAN

ON

 

 

OFF: Disables LAN filter; passes all frames transparently

 

 

 

 

 

 

 

4

(nc)

 

OFF

 

 

 

 

 

 

 

 

 

Note

The SQ/FD switch is not used in the Ethernet bridge with the BNC connector

 

 

option.

 

 

LED Indicators

Table A-3lists the IR-ETH LED indicators and describes their functions.

A-4 Installation and Operation

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