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iConverter

 

3-Port GM3 Network Interface Device 

Quick Start Guide

PRODUCT OVERVIEW

This document describes the basic installation and configuration of the 3-Port GM3 standalone 

modules.
The  GM3  features  a  RS-232  Serial  Console  Port  and  UTP  and/or  SFP  ports. The  SFP 

ports  support  SERDES  100/1000BASE-X  SFP  fiber  and  Omnitron  approved  SGMII 

10/100/1000BASE-T copper transceivers. 
NOTE: When using third party 100BASE-FX and unapproved SGMII SFPs, the port must 

be manually configured using the Connectivity Fault Management (CFM) Command Line 

Interface (CLI).  Interface settings can be changed using the 

portattribute

 command.  For 

more information including the complete User Manual on the 3-Port GM3 modules, access 

Omnitron’s registration page and register the product: 
http://www.omnitron-systems.com/forms/product_registration.php

INSTALLATION PROCEDURE

1) Configure DIP-Switches
2) Install Standalone Module and Connect Cables
3) Configure Module via Command Line Interface
4) Verify Operation

1) CONFIGURE DIP-Switches

DIP-SWITCH BANK 1
The function of DIP-switch Bank 1 is outlined in Figure 1 below.

Switch Position

Legend

Down (Default)

Up

1

P1 AN/MAN

AN

MAN

2

P2 AN/MAN

AN

MAN

3

P3 AN/MAN

AN

MAN

4

Port Redundancy (See Figure 2)

5
6

Link Modes (See Figure 3)

7
8

Figure 1:  DIP-switch Bank 1

The location of the DIP-switch is illustrated in Figure 2 on the next page.
SW1 - SW3:  P1, P2 and P3 AUTO/MANUAL NEGOTIATION “AN/MAN”
When these DIP-switches are in the Down “AN” position (factory default), the corresponding 

port automatically determines the duplex and pause modes of the connected device. If the 

connecting device cannot provide the proper signal to indicate its own mode of operation, 

Port to the COM port of a computer equipped with terminal emulation software such as 

HyperTerminal.  The Console Port (DCE) is a mini DIN-6 female connector which can be 

changed to a DB-9 connector with the included adapter.  The GM3 Console Port  is a standard 

RS-232 asynchronous serial interface.  
Start HyperTerminal and select the correct COM Port in the HyperTerminal “Connect To:” 

window.  Set the serial port to the following:
Bits Per Second  

57,600 

Stop Bits  

1

Data Bits  

Parity 

NONE

Hardware Flow Control 

NONE

Once connected, press <ENTER> to bring up a command line prompt on the attached PC.  

A new GM3 module does not have a password, and will skip the Password Entry screen and 

go straight to the Management Options screen.  If a password has been set, the Password 

Entry screen will be displayed.  Type the password and press <ENTER>, the GM3 will respond 

with the Management Options screen:
The CLI interface enables detailed configuration of the module.

4) VERIFY OPERATION

Once the module has been installed and configured per steps 1 - 3, verify the module is 

operational by viewing the LED indicators.

LED Function

“Legend”

Color

OFF State

ON/Blinking State

Power 

“PWR”

Green

No power

ON: Module has power

P1 Link Activity 

“100”

Green

Port not linked at 100M

ON: Port linked at 100M

Blinking:  Data activity

P1 Link Activity

“1000”

Green

Port not linked at 1000M

ON: Port linked at 1000M

Blinking: Data activity

P1 Link Activity

“100” and “1000”

Green

Port not linked at 10M

ON: Port linked at 10M

Blinking: Data activity

P2 Link Activity 

“100”

Green

Port not linked at 100M

ON: Port linked at 100M

Blinking:  Data activity

P2 Link Activity

“1000”

Green

Port not linked at 1000M

ON: Port linked at 1000M

Blinking: Data activity

P2 Link Activity

“100” and “1000”

Green

Port not linked at 10M

ON: Port linked at 10M

Blinking: Data activity

Test/Alarm 

“Tst/Alm”

Green

Reserved

Reserved

Management Mode

“Msr/Slv”

Green

N/A

ON: Master (normal)

5 Hz Blinking: Secure Slave

P3 Link Activity 

“100”

Green

Port not linked at 100M

ON: Port linked at 100M

Blinking:  Data activity

P3 Link Activity

“1000”

Green

Port not linked at 1000M

ON: Port linked at 1000M

Blinking: Data activity

P3 Link Activity

“100” and “1000”

Green

Port not linked at 10M

ON: Port linked at 10M

Blinking: Data activity

Figure 4:  LED Indicators

040-8970P-001C  8/11

Page 1

Omnitron Systems Technology * 140 Technology Dr., #500 * Irvine, CA 92618 

949.250.6510 tel * 949.250.6514 fax * www.omnitron-systems.com

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