2.6
Connecting Channel Ports to Network
Each channel port is connected, using twisted-pair copper and fiber-optic
cable, to network devices.
2.6.1
Setting FDX/HDX Channel Configuration Switches
FDX/HDX (F(ull-)D(uple)X and H(alf)D(uple)X) refers to the manner in
which a network device sends and receives data on the network. A
network device that is operating in half-duplex mode either sends data or
receives data, in turn. A network device that is operating in full-duplex
mode both sends and receives data, simultaneously.
NOTE: The Multichannel Media Converter is an HDX/FDX auto-
negotiating device which transmits "FDX Advertising" signals to attached
network devices and forces FDX-capable network devices to FDX. Though
each channel of the Multichannel Media Converter can operate in either
full-duplex or half-duplex mode, setting the entire network to full-duplex
mode maximizes throughput and distances. To achieve this, ALL
interconnected devices must be capable of full-duplex and properly set.
CAUTION: If any network devices connected to a channel are not
capable of full-duplex (FDX), then all other channel devices must be set
to half-duplex (HDX), INCLUDING THE MULTICHANNEL MEDIA
CONVERTER CHANNEL. Failure to observe this caution will result in
excess network collisions.
NOTE: Each channel FDX/HDX switch must be set separately. Do NOT
connect a node operating at half-duplex to a twisted-pair port and then
connect another node operating at full-duplex to the fiber-optic port of the
same channel. Do NOT connect a node operating at full-duplex to a
twisted-pair port and then connect another node operating at half-duplex
to the fiber-optic port of the same channel.
Setting Full-Duplex/Half-Duplex Configuration Switches
1.
Locate six (6) FDX/HDX switches that are
associated with six (6) copper-to-fiber media
converter channels (DIP switches #1-6 at
front of Multichannel Media Converter).
2.
Referring to full-duplex/half-duplex mode of
network devices to be attached to channel
nodes, FOR EACH CHANNEL, set the
associated configuration switch to FDX (full-
duplex): UP or to HDX (half-duplex): DOWN.
2 INSTALLATION
2.9
MULTICHANNEL MEDIA CONVERTER
1 2 3 4
5 6 7
1 2 3 4
5 6
TE
HDX
NO
FDX
