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CFM3400 Bridge Media Converter 

Fast Ethernet 10/100Base-TX (RJ-45) 

To 100Base-FX (ST/SC) 
User’s Manual 

(620-0591-010) 

 

1. Overview 

IEEE 802.3u 100Mbps Fast Ethernet supports two types of media, 10/100Base-TX and 
100Base-FX, for network connection.  Link Fault and Pass Through (LFP) feature 
enhances the TP-Fiber link integrity and conformity.  Either one of TP or Fiber port is 
in link-fail state, the LFP converter forces the other port to be at link-disabled state.  

The TP-Fiber converter can be used as a standalone unit or as a slide-in module to 
the 19” converter rack, which can hold up to 10 units, at a central wiring closet. 
 

2. Model 

Description 

Model 

Connector & Wavelength (nm) 

CFM3400C 

1310nm Multi-Mode Duplex-SC 

CFM3400T 

1310nm Multi-Mode Duplex-ST 

CFM3400C20 

1310nm Single-Mode Duplex-SC 20km 

CFM3400C40 

1310nm Single-Mode Duplex-SC 40km 

CFM3400C60 

1310nm Single-Mode Duplex-SC 60km 

 

3. Checklist 

Before you start installing the converter, verify that the package contains the 
following: 

 

The TP-Fiber Converter 

 

AC-DC Power Adapter (Self Powering USB Cable sold separately) 

 

This User’s Manual 

Please notify your sales representative immediately if any of the aforementioned items 
is missing or damaged. 

4. 

Installing the Converter 

Note:  The Media Converter is hot swappable. 

 

Wear a grounding device for electrostatic discharge 

 

4.1 

TP-Fiber Converter with AC-DC Power Adapter 

Note:  Please ensure that the button is on the left side of slide switch (See Fig. 6-1). 
For as a standalone unit: 

 

Verify that the AC-DC adapter conforms to your country AC power 

requirement and then insert the power plug 

 

Install the media cable for network connection 

For as a slide-in unit: 

 

Verify that the media converter is the right model and conforms to the 

chassis slot.  The media converter and rack are built to match each other in 
dimensions, DC jack, DC receptacle, and power safety 

 

5V DC power jack on converter back, and carefully slide in and 
plug to 19” rack +5V DC power receptacle 

 

Install the media cable for network connection 

 

4.2 

TP-Fiber Converter with Self Powering USB Cable 

Note:  Please ensure that the button is on the right side of slide switch (See Fig. 6-2). 

 

Install USB cable.  Plug Type-A connector in PC’s USB port (jack) and Type-
B connector in the converter’s USB port (See Fig. 2) 

 

Install the media cable for network connection 

Warning: 

Please make sure that the power of PC/USB Hub has been turned on before connects 
the Self Powering Cable, or else the converter may not work. 

Default:  AUTO 

AUTO or FORCE setting, see Fig 11 S1-Bit 1 

TP Port 

Attach TP Category 5 cable to TP port and the distance can be up to 
100m. 
Use the straight-through Cable to connect to the switch or 
workstation, the 10/100 TP port can support AUTO MDI/MDI-X 

sensing. 

Fiber Port 

Default:  100FDX 
“100FDX”/”100HDX” setting, see Fig 11 S1-Bit 5 

 

Summary of Contents for CFM3400

Page 1: ...ectrostatic discharge 4 1 TP Fiber Converter with AC DC Power Adapter Note Please ensure that the button is on the left side of slide switch See Fig 6 1 For as a standalone unit Verify that the AC DC adapter conforms to your country AC power requirement and then insert the power plug Install the media cable for network connection For as a slide in unit Verify that the media converter is the right ...

Page 2: ...Basic Network Connection Fig 4 Bridge Media Converter Front Panel Fig 5 Bridge Media Converter Side Panel Fig 6 Bridge Media Converter Rear Panel Note Fig 6 1 represents that TP Fiber Converter with AC DC Power Adapter is enabled Fig 6 2 represents that TP Fiber Converter with Self Powering Cable is enabled Fig 6 1 Fig 6 2 ...

Page 3: ...ber ports Refer to the following table for the LEDs status Warning The Link Fault Pass Through LFP function works only when both converters have the same capability i e used in pair Furthermore both LFP converters should be supplied by the same manufacturer vender The connection comes from LFP converters with odd models or non LFP converters will cease the LFP function 6 LED Description LED Color ...

Page 4: ... Multi Mode Half Duplex 412m Multi Mode Full Duplex 2 km Single Mode Half Duplex 412m Single Mode Full Duplex 20 40 60km Self Powering USB Cable Limitations Type B to Type A USB cable up to 5m Warning a When Self Powering cable is being used be sure that the USB port is operational b If connects to a PC Notebook computer the USB port driver need not be loaded in order for the converter to draw pow...

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