Black Box LBH120A-H SERIES User manual

STEP X - Name of Step
24/7 TECHNICAL SUPPORT AT 877.877.2269 OR VISIT BLACKBOX.COM
LBH AND LMC SERIES
INDUSTRIAL
SWITCH
QUICK START GUIDE

STEP 1 - Hardware Description
INDUSTRIAL MINI SWITCHES
• LBH120A-H (TWISTED PAIR CONNECTORS)
• LBH120A-H-SC (SC FIBER CONNECTORS)
• LBH120A-H-ST (ST FIBER CONNECTORS)
• LBH120A-H-20K-SC (SC FIBER,
20KM DISTANCE)
• LBH120A-H-40K-SC (SC FIBER,
40 KM DISTANCE)
• LBH120A-H-75K-SC (SC FIBER, 75 KM)
• LBH120A-H-20K-ST (ST FIBER, 20 KM)
INDUSTRIAL MEDIA CONVERTERS
• LMC270A-MM-SC (SC FIBER MULTIMODE)
• LMC270A-MM-ST (SC FIBER MULTIMODE)
• LMC270A-SM-20K-SC (SC, SINGLE-MODE,
20 KM DISTANCE)
• LMC270A-SM-40K-SC (SC, SINGLE-MODE,
40 KM DISTANCE)
• LMC270A-SM-75K-SC (SC, SINGLE-MODE,
75 KM DISTANCE)
• LMC270A-SM-20K-ST (ST, SINGLE-MODE,
20 KM DISTANCE)
LBH120A-H, LBH120A-H-SC, LMC270A-MM-SC
TABLE 2. LED INDICATORS
LED STATE DESSCRIPTION
Link/Act
Steady Network connection
established
Flashing Transmitting or
receiving data
100 Steady Transfer at 100 Mbps
Off Transfer at 10 Mbps

STEP 2 - Install on DIN Rail
INSTALL THE UNIT ON THE DIN R AIL
Place the switch on the DIN rail from above
using the slot. Push the front of the switch
toward the mounting surface until it audibly
snaps into place.
DISMANTLING
Pull out the lower edge and then remove
the device from the DIN rail.

STEP 3A - Connect 10/100BASE-TX
10/10 0B A S E-T X C O N N EC T IO N S
The table below lists the pinouts of the
10/100BASE-TX ports.The picture at right
shows the connector pinout.
TABLE 1. 10/100BASE-TX PINOUTS
PIN REGULAR PORTS UPLINK PORT
1Input Receive Data + Output Transmit Data +
2Input Receive Data - Output Transmit Data -
3Output Transmit Data + Input Receive Data +
4Not connected Not connected
5Not connected Not connected
6Output Transmit Data - Input Receive Data -
7Not connected Not connected
8Not connected Not connected
LOCAL EXTENDER,
RE A R VI E W
Pin 8
Pin 7
Pin 6
Pin 5
Pin 4
Pin 3
Pin 2
Pin 1

STEP 3B - Connect 100BASE-FX
TABLE 1. 10/100BASE-TX PINOUTS
PIN REGULAR PORTS UPLINK PORT
1Input Receive Data + Output Transmit Data +
2Input Receive Data - Output Transmit Data -
3Output Transmit Data + Input Receive Data +
4Not connected Not connected
5Not connected Not connected
6Output Transmit Data - Input Receive Data -
7Not connected Not connected
8Not connected Not connected
LOCAL EXTENDER,
RE A R VI E W
100BASE-FX CONNECTIONS
The Tx (transmit) port of device 1 is connected
to the Rx (receive) port of device 2, and the Rx
(receive) port of device 1 to the Tx (transmit)
port of device 2. The fiber connector is shown
at right.
100
5
1
2
3
4
100
LINK/
ACT
PWR
LINK/
ACT
DEVICES
POWER
COPPER UPLINK
1
2
3
4
X
100
LINK/
ACT
PWR
LINK/
ACT
FIBER UPLINK
DEVICES
POWER

STEP 4 - Connect the Power
STA RT UP
Connect the 12–48 VDC power supply voltage
to start up the switch via the terminal block.
GROUNDING THE UNIT
CAUTION: This equipment is designed to permit
the connection of the grounded conductor
of the DC supply circuit to the grounding
conductor at the equipment.
For power connection, the following conditions
must be met:
• This equipment must be connected directly
to the DC supply system grounding electrode
conductor or to a bonding jumper from a
grounding terminal bar or bus to which the DC
supply system grounding electrode conductor
is connected.
• This equipment must be located in the same
immediate area (such as, adjacent cabinets)
as any other equipment that has a connection
between the grounded conductor of the same
DC supply circuit and the grounding conductor,
and also the point of grounding of the DC
system. The DC system should not be
grounded elsewhere.
• The DC supply source must be located within
the same premises as the equipment.
• Switching or disconnecting devices will not be
in the grounded circuit conductor between the
DC source and the point of connection of the
grounding electrode conductor.
GND
PWR
POWER GROUND
12–48 VDC
POWER INPUT GROUND

STEP 5 - Download the User Manual (Optional)
OPTIONAL: DOWNLOAD USER MANUAL
For product specifications and regulatory
information, refer to the User Manual. You can
download this document from our web site.
1. Go to www.blackbox.com
2. Enter the part number (LBH120A-H) in the
search box.
3. Click on the product in the “Product
Results” page.
4. Click on the “Support” tab on the product page,
and select the document you wish to download.
If you have any trouble accessing the Black Box
site to download the manual, you can contact
our Technical Support at 877-877-2269
or inf[email protected]

STEP X - Name of Step
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