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Overview
Thank you for purchasing PLANET MFB family SFP
100Base-FX Fast Ethernet module. The MFB family SFP
Fast Ethernet module can install into PLANET Switch
products with 100Base-FX SFP interface. The distance
can be extended from 2km (MM) up to 60 kilometers
(Single-mode, LC).
Note
Class 1 Laser Product
Complies with FDA Regulation 21 CFR
1040.10 and 1040.11.
Warning
Class 1 radiation is present when the
device or system is powered up.
Warning
Only trained and qualified personnel
should be allowed to install or replace
these modules.
1. Model List
Your MFB family SFP Fast Ethernet module comes with
one of the following models.
Fast Ethernet SFP Module List
Model
Interface
Fiber connector and distance
MFB-FX
SFP-Port
100Base-FX
Module
LC, Multi-Mode (1310nm)
-2km
MFB-F20
SFP-Port
100Base-FX
Module
LC, Single Mode (1310nm)
–20km
MFB-F40
SFP-Port
100Base-FX
Module
LC, Single Mode (1310nm)
–40km
MFB-F60
SFP-Port
100Base-FX
Module
LC, Single Mode (1310nm)
–60km
MFB-FA20
SFP-Port
100Base-BX
Module
LC WDM, Single Mode
(TX: 1310nm, RX: 1550nm)
-20km
MFB-FB20
SFP-Port
100Base-BX
Module
LC WDM, Single Mode
(TX: 1550nm, RX: 1310nm)
-20km
MFB-TFX
SFP-Port
100Base-FX
Module
LC, Multi-Mode (1310nm)
-2km (-40~75°C)
MFB-TF20
SFP-Port
100Base-FX
Module
LC, Single Mode (1310nm)
–20km (-40~75°C)
* Models with last two numbered characters indicate the
maximum distance in km.
2. Check List
Your MFB carton should contain the following items:
The MFB family SFP Fast Ethernet Module
This User’s Manual
If any item is missing or damaged, please consult the
dealer from whom you purchased you MFB family SFP
Fast Ethernet module.
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3. Introduction
3-1 1-Port 100Base-FX SFP Modules –
MFB-FX / MFB-F20 / MFB-F40 / MFB-F60
Features:
Comply with IEEE 802.3u Fast Ethernet standard
1 x 100Mbps LC fiber port
Plug and Play Installation
0 to 50 Degree C operation temperature
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3-2 1-Port 100Base-BX WDM SFP Modules
– MFB-FA20 / MFB-FB20
Features:
Comply with IEEE 802.3u Fast Ethernet standard
1 x 100Mbps LC fiber port (Single LC fiber connec
-
tors)
Plug and Play Installation
0 to 50 Degree C operation temperature
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3-3 1-Port 100Base-FX SFP Modules –
MFB-TFX / MFB-TF20
Features:
Comply with IEEE 802.3u Fast Ethernet standard
1 x 100Mbps LC fiber port
Plug and Play Installation
-40 to 75 Degree C operation temperature
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Note
The MFB series single mode SFP
transceivers provide the optical power
budget from 15 dB to 30dB. When shorter
distance of single-mode fiber cables is
used, you might need to insert an in-
line optical attenuator in the link to avoid
overloading the transceiver:
SFP Model
In-line
Optical
Attenuator
MFB-
F20
MFB-
TF20
MFB-
F40
MFB-
F60
MFB-
FA20
MFB-
FB20
Optical power
budget
15 dB
24
dB
30
dB
18 dB 18 dB
Fiber Cable
Length = 10Km
---
---
10
dB
---
---
Fiber Cable
Length = 30Km
X
---
---
X
X
15Km ≤ Fiber
Cable Length <
40Km
---
---
---
---
---
1. “---” means no need to use in-line
optical attenuator.
2. “X” means fiber connection not estab-
lished.
4. Installing SFP Modules
4.1 Installing the SFP transceiver
The sections describe how to insert an SFP transceiver
into an SFP slot.
The SFP transceivers are hot-pluggable and hot-
swappable. You can plug-in and out the transceiver to/
from any SFP port without having to power down the
Switch/Media Converter. As the Figure -1 appears.
MFB
Figure 1
Plug-in the SFP transceiver
