Power Options
Power Considerations
Voltage in the range of 10
–36 VDC or 8–24 VAC must deliver current commensurate
with power consumption. Recommended size for solid power conductors is 16
–22 AWG;
for stranded conductors, use 16
–18 AWG. Common is directly connected to zero volts and
chassis is isolated from zero volts. Input connections are reverse-polarity protected.
LED Indicators
The ―PWR‖ LED glows solid green when the switch is properly powered. To aid in
troubleshooting, each copper port has two LEDs. The Port 1 LED labelled ―L‖ glows
solid if a link exists, flashes to show activity and shows data rate by colour: green for 100
Mbps and yellow for 10 Mbps. The
LED labelled ―D‖ glows solid green if full-duplex is on
or is unlit when the port is in half-duplex mode
— but in half-duplex operation it will flash
if a collision occurs. The LEDs of Ports 2
–4 are unlabelled but work the same. The fibre
port (5) LED glows solid green if linked to a working 100BASE-FX port and flashes when
data moves through the port.
Network Connections
The switch employs Auto-MDIX
technology so that either straight-
through or crossover cables can
be used to connect to network
interface adapters or to other
hubs. Cable issues are shown in
the chart to the right
