4
3
50 ohm terminator
50 ohm terminator
GND
C
oax Config Switch
Set to 0
straight-through
crossover
OR
TX
TX
TX
RX
OR
OR
C
oax Config Switch
Set to 50
50 ohm terminator
C
oax Config Switch
Set to 0
50 ohm terminator
GND
50 ohm terminator
GND
MEDIA CONVERTERS in the NETWORK
E-CX-FRL-04
Setting the Coax Configuration Switch:
Set switch position to 50 ohms when connecting the end
of a thin coax segment DIRECTLY to the media converter's
BNC port. (NOTE: The minimum coax cable length must
be 0.5 meters.)
Set switch position to 0 ohms when connecting to the
middle or in line of a thin coax segment. (NOTE: For this
position a BNC "T" must be connected to the media
converter's BNC port).
TRANSITION Networks media converters provide media
connections to and from 10BASE-T, 10BASE-2, and 10BASE-FL.
E-CX-TBT and E-CX-FRL both require the coax configuration switch to be set and the coax segment to be grounded.
E-CX-TBT-04
Configuring 10BASE-T Straight Through/Crossover
Cable Assembly
The two active pairs in a 10BASE-T network are pins 1 & 2
and pins 3 & 6. Use only dedicated wire pairs (such as
blue/white & white/blue,
orange/white & white/orange) for
the active pins.
Cable connections between a
hub and the media converter
must be configured as straight
through. Cable connections
between the media converter and
a terminal, transceiver or NIC
E-CX-TBT requires straight through/crossover 10BASE-T cable configuration.
Twisted
Pair #1
Twisted
Pair #2
Crossover Cable
Connectors for like devices
Twisted
Pair #1
Twisted
Pair #2
Straight Through Cable
Connectors for unlike devices
