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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 conform ity. 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, ver ify 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 oth er in
dimensions, DC jack, DC receptacle, and power safety
⇒ Locate +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 sl id e 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
Fiber 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.
Default: 100FDX
“100FDX”/”100HDX” setting, see Fig 11 S1-Bit 5
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Fig. 1 The View of LFP Bridge Media Converter
Fig. 2 Connection among USB (Type-B to Type-A plug, Fiber and TP Cables
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. 3 Basic Network Connection
Fig. 6-1 Fig. 6-2
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5. Link Fault Pass Through
Note: Link Fault Pass Through (LFP) function only takes effect as S1-Bit4 (see Fig.
11) is enabled. Disabled S1-Bit4 will turn this m edia converter into a general one.
This media converter supports Link Fault Pass Through (LFP) in TX/FX converter
application. Link status on one port is propagated to the other part to notice the
remote nodes. If TP port is unplugged, this converter stops transmission on fiber
port. This causes the remote fiber node link to fail. LED shows the link failure on
both TP and fiber ports. If fiber link fails, this converter restarts auto-negotiation on
TP port but always stays in the link failure state. This causes the remote TP node link
to fail. LED also shows the link failure on both TP and fiber ports. Refer to the
following table for the LEDs’ status:-
Remark:
The Fig. 9 shows LEDs’ status of only ONE CABLE seg ment is OUT (disconnected /
damaged / at fault.) If more than one faulty segment is OUT, the LEDs’ status may
be different.
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 Function
FX LNK/ACT Green
FX FDX/COL Amber
TP LNK/ACT Green
TP 100 Green
PWR Green Lit when +5V power is coming up
Lit when fiber connection is good
Blink when fiber data is present
Lit when full-duplex mode is active
Off when half-duplex is active
Blink when collision is present
Lit when TP connection is good
Blink when TP data is present
Lit when TP speed is 100Mbps
Off when TP speed is 10Mbps
7. DC Jack and AC-DC Power Adapter
The DC jack’s central post is 2.5mm wide and conforms to the DC receptacle (2.5mm)
on the 19-inch Converter Rack slot.
Keep the AC-DC adapter as spare parts when media converter is installed in a 19 -inch
Fig. 9 Link LED Status
Media Converter Rack.
Fig. 10 DC+5V Input Jack and Dimension
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8. Connecting to TP, Fiber Device
Converter
TP Port
10/100TP
Converter
Fiber Port
100FX
AUTO, FORCE selectable: Bit 1, 2, & 3 of S1
a. AUTO: 10/100 N-Way auto-negotiation
b. FORCE: 100 or 10, FDX or HDX
100Mbps duplex selectable: Bit 5 of S1
a. FDX for 100FDX fiber link partner, default
b. HDX for 100HDX fiber link partner
Fig. 11 S1-Bit 1, 2, 3, 4, & 5 Configuration and Setting
S1-1 TP port mode : AUTO (Default) or FORCE
S1-2 TP port speed : 100 (Default) or 10 when TP at FORCE
S1-3 TP port duplex : FDX (Default) or HDX when TP at FORCE
S1-4 LFP : LFP enabled (Default) or disabled
S1-5 Fiber port duplex : 100FDX (Default) or 100HDX
Note: S1-2 and S1-3 w ill take effect only when S1-1 is set at TP-FORCE.
Warning:
— When TP N-Way port is connected to TP 100FDX (FORCE mode) instead N-Way
partner, it will result in 100HDX mode with invalid collision signal
— Ensure that all network nodes are configured at an identical operation mode.
Improper operation and flow control modes between TP and fiber port
connections will render the LAN at work poorly
9. Cable Connection Parameter
100Base-X network allows 512-bit time delay between any two node-stations in a
collision domain. Switch-based Media Converter breaks up TP and fiber segments’
collision domain to extend the cabling distance.
• TP Cables Limitations: Category 5 or better, up to 100m
• Converter Fiber Cable Limitations:
SC/ST Converter Models
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 power from cable provide that (a) is valid
c. Battery consumption will be higher than usual i f us e notebook on battery
10. TP-Fiber Technical Specifications
• Standards: IEEE 802.3u 10/100Base-TX, 100Base-FX
• Models:
Model Connector
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
• Cable/Max Distance:
UTP Category 5, up to 100m
Multi-Mode Fiber 50/125, 62.5/125, or 100/140µm, up to 2km
Single-Mode Fiber 8.3/125, 8.7/125, 9/125, or 10/125µm, up to 20~60km
• LED Indicators: POWER, TP LNK/ACT, 100, FX LNK/ACT, FDX/COL
• Data Transfer Rate:
Speed Forwarding Rate
100Mbps 148,800 PPS
10Mbps 14,880 PPS
• Flow Control:
IEEE 802.3x compliant for full-duplex, and
Back-Pressure flow control for half-duplex
• Power Requirement:
1A@+5V DC from AC-DC Adapter
0.5A@+5V DC from USB Port
• Ambient Temp erature: 0° to 50° C
• Humidity: 5% to 90%
• Dimensions: 2 6.2 x 70.3 x 94 mm (H x W x D)
• Complies with FCC Part 15 Class A and CE Mark
Note: For connecting this device to Router, Bridge, or Switch, please refer to the
corresponding device’s Technical Manual.
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