Install Guide
Model: MIL-240FXC/MIL-240FXT
3
T h e o r y o f O p e r a t i o n
The transceiver for the
Main Port
selects either the
Primary Port
or the
Backup Port
for transmission and reception. The
Main Port
selects the
Primary Port
if the transceiver on the
Primary Port
detects a link signal.
Otherwise, the
Main Port
selects the
Backup Port
if link port is good.
If the
Main Port
does not detect a link signal—no signal will be transmitted on
the
Primary Port
and the
Backup Port
. If a link signal is not detected on the
Primary Port
and the
Backup Port
—no signal will be transmitted on the
Main Port
.
Figure 1.MIL-240FX Connections
I n d i c a t o rs
There are 4 LEDs on the MIL-240FXT/240FXC:
•
MPSD:
(Main Port Signal Detect): This LED illuminates when the unit detects
an input signal at the
Main
Port
. It is yellow.
•
PWR:
(Power): This LED illuminates when the unit is powered up (using the
power supply adapter). It is green.
•
BPSD:
(Backup Port Signal Detect): This LED illuminates when the unit
detects an input signal at the
Backup
Port
. It is yellow.
•
PPSD:
(Primary Port Signal Detect): This LED illuminates when the unit
detects an input signal at the
Primary
Port
. It is yellow.
Note:
When
MPSD
and
PPSD
illuminate at the same time, the node attached to the
Main Port
will connect to the node attached to the
Primary Port
(
BPSD
may be on).
When
MPSD
and
BPSD
illuminate at the same time, the node attached to the
Main
Port
is connected to the node attached to the
Backup
Port
(
PPSD
is off).
Server
Switch
Switch
MPSD
PWR
BPSD
PPSD
PS
5 V DC
1.5 A
Primary Port
Main Port
Backup Port
Selector
MIL•240FXC
100BASE-FX
Redundant Port Selector
SC Connector
