Cabletron Systems EMC39-12 Manual De Usuario
EMC39-12 Features
EMC39-12 User’s Guide
Page 1-3
1.4 EMC39-12 FEATURES
The EMC39-12 Ethernet Media Converter provides connectivity for up to
twelve singlemode fiber optic connections. The network connection is
made through a 50-pin connector on the rear of the unit.
twelve singlemode fiber optic connections. The network connection is
made through a 50-pin connector on the rear of the unit.
The EMC39-12 supports the following:
•
Automatic Transmit Port Disable
•
Full Duplex Ethernet Support
•
LANVIEW Diagnostic LEDs
•
Connectivity
The following sections discuss these features.
1.4.1 Automatic Transmit Port Disable
The EMC39-12 automatically disables the Transmit port when its
corresponding Receive port does not have a link.
corresponding Receive port does not have a link.
1.4.2 Full Duplex Ethernet Support
All of the EMC39-12 ports support Full Duplex Ethernet provided that
the device at the other end of the port supports Full Duplex Ethernet also.
Full Duplex Ethernet allows the EMC39-12 to transmit and receive
signals simultaneously for a 20 Megabit bandwidth through-put.
the device at the other end of the port supports Full Duplex Ethernet also.
Full Duplex Ethernet allows the EMC39-12 to transmit and receive
signals simultaneously for a 20 Megabit bandwidth through-put.
1.4.3 LANVIEW Diagnostic LEDs
Cabletron Systems equips the EMC39-12 with a visual diagnostic and
monitoring system called LANVIEW. LANVIEW LEDs help you quickly
identify Power and Link status. Chapter 4 describes the LEDs in detail.
monitoring system called LANVIEW. LANVIEW LEDs help you quickly
identify Power and Link status. Chapter 4 describes the LEDs in detail.
1.4.4 Connectivity
The rear panel of the EMC39-12 has a 50-pin Champ connector (RJ71)
that supports twelve twisted pair segments. The front panel has twelve
10BASE-FL single mode ST ports. Each single mode ST port has a
Receive connector and a Transmit connector.
that supports twelve twisted pair segments. The front panel has twelve
10BASE-FL single mode ST ports. Each single mode ST port has a
Receive connector and a Transmit connector.
emc39bk Page 3 Monday, February 12, 1996 4:21 PM