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Black Box Modular Switches
Installation and User Guide (8/99)
24
Figure 3.7 10Mbps Fiber ports internal jumper settings.
Note:
Be certain that the main power is disconnected before opening the unit or changing any
internal jumper settings
Therefo
re, the default setting of half-duplex ( fiber ports) is generally desirable because it is
widely used and allows for the connection of various devices without re
-configuration.(where the
connected device is half duplex and does not support full
-duplex i.e., Hub and media-converters.)
Note:
For 10Mbps fiber ports, the user can set the jumpers either at full-duplex or half duplex on
all the four ports. There is no individual port duplex options for 10 Mb port.
3.8
Powering the LE14XXA-Series Switch
The Black-Box LE14XXA-Series Switches incorporate an internal universal power
supply, and has a recessed male IEC connector for the AC power cord at the left
-rear. A manual
power ON
-OFF switch is adjacent. A six-foot 115 VAC 60 Hz standard power cord is supplied
with each unit shipped within the United States and Canada.
Figure 3.5: LE14XXA-Series
AC power connector
The auto-ranging power supply supports installation environments where the AC
voltage is from 90 to 260 volts with a power input frequency of between 47 and 63 Hz. The 8
-
port units will consume just under 20 watts of power typically, and the 16
-port units will
consume about 35 watts typically.
When connecting the Ethernet cabling, there is no need to power down the unit.
Individual segments can be connected or disconnected without concern for AC power
-related
problems or damage to the unit.
Power supply options are available to suit the LE14XXA-Series Switches to special
high
-availability communications and/or heavy industrial-grade applications, including:
*
-48VDC with single DC input,
*
-48VDC with dual-source DC input,
*
-48VDC with dual redundant internal power supply units and dual-source DC input,
*
AC with dual redundant internal power supply units and dual-source AC input
ON
OFF
110-220
VAC
47-63Hz
1.0-0.5A