MFB-FB20 - Adapter / Network Card Planet - Free user manual and instructions
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| Type of product | Media Converter / Network Adapter |
| Model | MFB-FB20 |
| Brand | Planet |
| Connections | 1 x 10/100Base-TX RJ-45 port, 1 x 100Base-FX SC fiber port |
| Fiber type | Multi-mode |
| Fiber wavelength | 1310 nm |
| Data transfer rates | Copper: 10/100 Mbps; Fiber: 100 Mbps |
| Distance | Up to 2 km on multi-mode fiber |
| Duplex mode | Full/half duplex |
| Standards | IEEE 802.3, IEEE 802.3u |
| LED indicators | PWR, FX LNK/ACT, TP LNK/ACT |
| Dimensions | 95 x 70 x 26 mm |
| Weight | 150 g |
| Power supply | External 5V DC, 1A AC/DC adapter |
| Power consumption | <2.5 W |
| Enclosure | Metal case |
| Operating temperature | 0°C to 50°C |
| Storage temperature | -10°C to 70°C |
| Humidity | 5% to 90% non-condensing |
| Auto features | Auto-negotiation and auto MDI/MDI-X on copper port |
| Maintenance | Clean with a dry cloth; avoid dust and moisture |
| Safety | Use only the provided power adapter; do not expose to water |
| Spare parts / Repairability | Repairs should be carried out by qualified personnel; power adapter is replaceable |
Frequently Asked Questions - MFB-FB20 Planet
What is the Planet MFB-FB20 used for?
The MFB-FB20 is a media converter that connects a 10/100Base-TX copper Ethernet network to a 100Base-FX fiber optic network, extending the reach up to 2 km with multimode SC fiber.
How do I connect the MFB-FB20?
Connect your switch or computer to the RJ-45 port using a twisted-pair cable, and connect the fiber optic cable to the SC port. Then plug in the power adapter. The device will automatically detect the link.
Can I use single-mode fiber with this device?
No, the MFB-FB20 is designed specifically for multi-mode fiber with SC connectors at 1310 nm. Using single-mode fiber will not provide a connection.
What is the maximum fiber distance?
The maximum distance is 2 km over multi-mode fiber. This is typical for 100Base-FX with multi-mode fiber at 1310 nm.
Does the MFB-FB20 support full duplex?
Yes, it supports full duplex mode on both the copper and fiber ports, allowing simultaneous data transmission and reception.
How can I verify if the link is working?
Check the LED indicators on the device. The PWR LED should be lit. The LNK/ACT LED for the connected port will light up when a link is established and blink during activity.
Is configuration needed before using the MFB-FB20?
No, the device is plug-and-play. It automatically negotiates speed and duplex mode, and supports auto MDI/MDI-X on the copper port, so no manual settings are required.
What should I do if the fiber link is not established?
Ensure the fiber cables are properly inserted into the SC ports and that the TX and RX strands are swapped between the two devices (cross-over). Also verify both ends use the same fiber type and wavelength.
Can the MFB-FB20 be mounted on a wall?
Yes, the metal case includes mounting holes on the bottom, allowing you to attach the device to a wall or any flat surface for easy installation.
What power supply should I use?
Use the included 5V DC power adapter with a minimum output of 1A. Using an improper power adapter may damage the device, so always check the voltage polarity.
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USER MANUAL MFB-FB20 Planet
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Product information
Brand : Planet
Model : MFB-FB20
Category : Adapter / Network Card