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User’s Manual
SP385A/SP385B
12 Port 10/100BASE-TX to 100BASE-FX Media
Converter
http://www.micronet.info
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Package Content
Thank you for purchasing Micronet SP385A/SP385B 12 Port Media Converter. Before you start
installing the Media Converter, verify the following items in the package
● 12 Port Media Converter ● User’s Guide
● Power Cord x 2 ● Accessories
Product Overview
The 12 Port Media Converter can house up to twelve media converters in a 1U standard 19”
rack-mountable size. The front panel of the SP385A/SP385B provides status LEDs and an uplink
push button for each 10/100BASE-TX to 100BASE-FX media converter. The SP385A comes with
ST connectors and SP385B comes with SC connectors. The SP385A/SP385B have following key
features.
Houses twelve channels of media conversion
Front panel status LEDs
Standard 19” rack-mountable size, 1U high
2 Redundant Power Supplies
12 Port 10/100BASE-TX to 100BASE-FX converters
Fiber media allowed: multimode fiber using ST, SC connector
Support full or half duplex mode on TX port
One push button for uplink (MDI/MDI-X) crossover configuration.
Installation
As with any electric device, you should place the equipment where it will not be subjected to
extreme temperatures, humidity, or electromagnetic interference. Specifically, the site you select
should meet the following requirements:
1. The ambient temperature should be between 32 and 104 degrees Fahrenheit (0 to 40 degrees
Celsius).
2. The relative humidity should be less than 90 percent, non condensing.
3. Surrounding electrical devices should not exceed the electromagnetic field (RFC) standards
for IEC 801 3, Level 2 (3V/M) field strength.
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4. Make sure that the equipment receives adequate ventilation. Do not block the ventilation
holes on each side of the media converter or the fan exhaust port on the side or rear of the
equipment.
Follow the steps to install the media converter
1. Connect the supplied AC power cords to the receptacles on the rear panel.
2. Attach the plugs from each of the dual power supplies into standard AC outlets with a voltage
range from 100~240V AC.
3. Turn on the media converter by flipping the ON/OFF switches beside the power supplies’
receptacles to the ON position. User could choose to turn on both power supplies. The media
will keep working when either power supply fail. Another way to use the redundant power is
turning on only one power supply. When the power supply fail, turn on the other one.
4. The power LED of each media converter will shine after turning on the Media Converter.
5. The link LED of each media converter will shine after connecting twisted pair copper cabling
between the TX port (or fiber optic cabling between the FX port) and another working
networked device.
6. Adjust the MDI/MDI-X button when different TP cable (Straight-through or Cross-over) is
linking to RJ-45 connector.
7. Please refer to the following table for cable connection.
Port type Cable Type Connector Max. Cable Length
10BASE-T Cat. 3,4,5 UTP RJ-45 100 meters
100BASE-TX Cat. 5 UTP RJ-45 100 meters
100BASE-FX 62.5/125µm or 50/125µm multi-mode fiber ST or SC 2000 meters
LED Indication
Please refer to the following table for LED indication of SP385A/SP385B
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LED Status Indication
Steady The Power is on PWR
Off The Power is off
Steady A valid network connection established LNK/ACT
Flashing Transmitting & receiving
Steady TX port connection at speed of 100Mbps 100
Off TX port connection at speed of 10Mbps
Steady Connection in full duplex mode
Flashing Collision occurred
FDX/COL
Off Connection in half-duplex mode
RJ45 Pin Assignment
Before connecting the switch to computer or other switch/hub, please check the color sequence of
RJ-45 connector (as shown in Figure 2). Where W means white, O means orange, G means green,
BL means blue, BR means brown.
P/N: 2300-0084
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SPECIFICATIONS
MODEL SP385A SP385B
STANDARD IEEE802.3 10BASE-T; IEEE802.3u 100BASE-TX/FX
INTERFACE 10/100 Mbps port x 12, RJ-45
100BASE-FX port x 12, ST
10/100 Mbps port x 12, RJ-45
100BASE-FX port x 12, SC
TP CONNECTIONS 10BASE-T: UTP Category 3,4,5 ; RJ-45
100BASE-TX : UTP Category 5 ; RJ-45
FIBER CONNECTIONS 100BASE-FX: 62.5/125 mμ or
50/125 m multiμ -mode fiber,
ST connector
100BASE-FX: 62.5/125μm or
50/125μm multi-mode fiber,
SC Connnector
LED INDICATIONS Power; Speed; Link/Activity; Full Duplex/Collision
FILTERING
/FORWARDING RATE
10Mbps: 14,880pps/14,880pps
100Mbps: 148,800pps/148,800pps
ENVIRONMENT Operating Temp: 0 ~ 40°C
Storage Temp: -25 ~ 70°C
Humidity: 10 ~ 90% non-condensing
POWER SUPPLY 100~240 VAC, 50/60 Hz; Redundant Power
NET WEIGHT 4.9 kg
EMISSION FCC Class A, CE
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause radio interference, in
which case the user may be required to take adequate measures.
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Note:
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