Page 1
System Requirements
An LG
installation. The Dual Band LG
from those for a single-band system and are noted below.
system has location, space, power, and safety requirements for
Cell
requirements for space and power are different
Cell
System Location
The LGC
rack in a wiring, telecom, or electrical closet, which may contain other Ethernet,
telephony, or miscellaneous equipment.
• Standard wiring closet temperatures: 0-45° C
• Does not require special air conditioning
Main Hub and Expansion Hub mount into a standard 19" equipment
ell
Space Requirements
The LGC
• The Main Hub height is 1.7” (44.5 mm). The Dual Band Main Hub is 3.5”
(88.9 mm) high.
• The Expansion Hub height is 1.7” (44.5 mm). The Dual Band Expansion Hub
is 3.5” (88.9 mm) high.
• Allow at least one inch (25 mm) clearance between each hub, between any
existing equipment in the rack, and between the bottom shelf of the rack and
the hub.
Main Hub and Expansion Hubs are installed into a standard 19” rack.
ell
Power Requirements
The LGC
to a UPS (Uninterruptable Power Supply), which may exist in the wiring closet.
Dual-Band equipment requires twice as much power as single-band equipment.
• LGC
• The Main Hub uses a maximum of 1.6 A of electrical current.
• The Expansion Hub uses a maximum of 1.6 A of electrical current.
• The RAUs are powered from the Expansion Hubs via the UTP/STP cable and
they use 12V DC.
requires AC voltage/current. LGC Wireless recommends connecting it
ell
operates with 88-264 VAC 50/60 Hz.
ell
4-3
Page 2
Underwriters Laboratory Installation Guidelines
Use the following guidelines when rack mounting the LGC C
1
Do not exceed the maximum ambient air temperature of 45° C during
operation. Provide sufficient airflow and cooling within the rack to prevent
heat build-up from exceeding this limit.
2
Be careful when servicing these products. If you are removing the system from
the rack, turn it off and remove the power cord first. There are no user
serviceable parts inside the hubs or RAUs.
3
Do not compromise the amount of airflow required for safe operation of the
equipment when installing it in a rack. Both the Main Hub and the Expansion
Hub draw in air on the left side and exhaust heated air at the rear. The hubs
pass approximately 6 cu. ft. of air per minute through themselves and only
dissipate a maximum of 25 watts of heat from their internal circuitry.
4
The AC input current consumption of the hubs is rated at 1.6 A at 110 VAC.
The internal power supply has internal fuses that are not user replaceable.
Consider the worst-case power consumption shown on the product labels when
provisioning the rack’s AC power source and distribution.
Fiber Port Safety Precautions
Suggested safety precautions for working with LG
information about LG
Compliance Information
compliance with safety standards, see
Cell
.
Cell
:
ell
Fiber Ports follow. For
Appendix C –
Viewing fiber:
•
ports.
Do not stare with unprotected eyes at the connector ends of the fibers or
the ports of the hubs. Invisible infrared radiation is present at the front
panel of the Main Hub and Expansion Hub. Do not remove the Fiber
Port dust cover unless the port is in use. Do not stare directly into a Fiber
Port.
Test fiber cables:
•
power source last and disconnect it first.
Fiber ends:
•
use tape.
Broken fiber cables:
•
the fibers. Report any broken fiber cables and have them replaced.
Cleaning:
•
Modifications:
•
optical system or associated equipment.
Observe the following warning about viewing fiber ends and
When you use test fiber optical cables, connect the optical
Cover any unconnected fiber ends with an approved cap. Do not
Do not stare with unprotected eyes at any broken ends of
Use only approved methods for cleaning optical fiber connectors.
Do not make any unauthorized modifications to this fiber
4-4 LGCell Installation
Page 3
•
Live work:
Live work is permitted on the LG
as it is a Class 1 hazard.
Cell
•
Signs:
•
Test equipment:
No warning signs are required.
Use Class 1 test equipment.
Cable and Connector Requirements
LGC
The LGC
Category 5 (CAT 5), or better, Unshielded Twi sted Pair (UTP) or Shielded Twisted
Pair (STP) and standard 62.5µm/125µm Multi-Mode Fiber cable (MMF), at a
wavelength of 1300 nanometers (nm).
These cables are widely used industry standards for Local Area Networks (LANs).
The regulations, guidelines, and standards for cable installation are identical to
those specified by the TIA/EIA 568-A standard for LANs. See
EIA 568-A Cabling Standard.
LGC Wireless recommends Plenum rated CAT 5 UTP/STP and MMF cable and
connectors for conformity to building codes and standards.
ell
Standard Equipment
• LGC
equipment operates over standard TIA/EIA 568-A specification,
ell
Main Hub
ell
Appendix B – TIA/
LGC
• LGC
• Remote Antenna Units (RAUs) with an in-building antenna
• Four screws for mounting the RAUs
• Four rack mount screws per hub to mount hubs into a 19" rack
•
Installation and Reference Guide
ell
The following are procedures for installing an LG
system is not required. The installation procedures are based on the following
assumptions:
• The LGC
• Locations for the Main Hub, Expansion Hubs, and RAUs have been identified.
• 19" rack space is available in the wiring closets.
• AC power is available for the LG
• MMF and UTP/STP have been pulled into place (based on previous design)
and terminated.
Expansion Hub
ell
Equipment Installation
equipment has been unpacked and inspected.
ell
.
Cell
system. Pre-testing the
Cell
4-5
Page 4
LG
• Installing Main Hub
• Installing Expansion Hubs
• Installing Remote Antenna Units (RAUs) and antennas
• Connecting RF cables
• Connecting CAT 5 cables
• Connecting MMF cables
• Optimizing the system
system installation includes the following tasks:
Cell
These procedures tell you how the LG
the installation. If it is not responding as it should, see
Problems, Troubleshooting, and Frequently Asked Questions
should respond during various phases of
Cell
Section 6, Common
.
Equipment Inspection
Check that all standard equipment was shipped. (See
on page 5.) If the equipment is damaged or parts are missing, contact LGC Wireless
immediately, at 1-800-530-9960 in the U.S. or, for international customers, at
+1-408-487-2400.
Most problems during installation are caused by improperly terminated
UTP/STP and MMF.
LGC
Configuration
ell
If you are installing a Dual-Band LG
from here through “RF Cable Connection” on page 16 of this chapter.
system, use the following steps,
Cell
LGCell Standard Equipment,
4-6 LGCell Installation
Page 5
This diagram illustrates how the LGC
ell
is configured. The rest of this section
contains configuration and installation
procedures.
Main Hub Installation
Your installation may have one or more Main Hubs, each located in the same or
different wiring closet. Use the following procedures for all Main Hubs.
1 Mount the Main Hub
Mount the Main Hub to the rack in the
assigned wiring closet location, using four
screws provided.
For air circulation, be sure to
ª
Main Hub
LGCell
LGC WIRELESS
AC POWER
UP
SYNC
DOWN
POWER
UP
LINK
STATUS
DOWN
SYNC
TO EXPANSION HUB PORTS
UP
STATUS
DOWN
LINK
UP
STATUS
DOWN
SYNC
2
LINK
STATUS
SYNC
1
4
LINK
SYNC
3
leave at least one inch (25 mm)
space between all hubs and
between any other equipment
in the rack. If mounting a hub on the rack’s
bottom shelf, also leave at least one inch
(25 mm) clearance from the bottom.
4-7
Page 6
2 Connect Power and Power Up
After mounting the Main Hub, connect the
AC power cord to the Main Hub. Plug the
power cord into an outlet providing AC
power (88-264 VAC). See 1 in graphic.
Power up the Main Hub by flipping the
power switch from position0 to
position1. See 2 in graphic.
The
POWER
and
LEDs on the front
SYNC
panel should be green (lit).
3 Connect the MMF cables
Using the procedure below, connect all
MMF cables (two per port) to the MMF
ST-female connectors (labeled
) on the Main Hub front panel. Use any
UP
DOWN
available Main Hub port.
and
4-8 LGCell Installation
Page 7
The connections for the Dual Band system
are shown here. Make sure you connect
the 900 MHz Main Hub to the 900 MHz
Expansion Hub and the 1800 MHz hubs
together.
Be sure
the MMF cable ST-connectors are clean and free of dust or oils.
If the fiber connector front face is not free of dust or oils, follow the
manufacturer’s recommendations for cleaning it.
The MMF cable is labeled with either 1 or 2, or is color-coded. This distinguishes
the connectors for proper connection between the Main Hub and Expansion Hubs.
If the fiber jumper is labeled with 1 or 2:
• Connect 1 to UP on Main Hub
• Connect 1 to UP on Expansion Hub
• Connect
2
to
• Connect 2 to
on Main Hub
DOWN
on Expansion Hub
DOWN
If the fiber jumper is color-coded (for example, “blue” or “red”):
• Connect “blue” to UP on Main Hub
• Connect “blue” to UP on Expansion Hub
• Connect “red” to
• Connect “red” to
on Main Hub
DOWN
on Expansion Hub
DOWN
4-9
Page 8
Be sure
to record which number or color is connected to UP and to
DOWN
This information is needed when connecting the other end of the MMF
cables to the Expansion Hub ports.
4 Check Main Hub LEDs
.
The
POWER
and
LEDs should be
SYNC
green. If not, reset the Main Hub.
If the
POWER
green, see
and
LEDs do not light
SYNC
Section 6, Common Problems,
Troubleshooting, and Frequently Asked
Questions
The
.
LINK STATUS
and
LEDs on the
SYNC
ports where the fiber is connected should
be red. This indicates that the other end of
the MMF cable is not yet connected to the
Expansion Hub ports.
Expansion Hub Installation
The Expansion Hubs may be located in the same or different wiring closets, and
they may be located in a different wiring closet than the Main Hub.
Use the following procedures for all Expansion Hubs.
4-10 LGCell Installation
Page 9
1 Mount the Expansion Hubs
Mount the Expansion Hubs onto the rack
in the assigned wiring closet location,
using four screws per hub.
For air circulation, be sure to
leave at leas t one inch (25 mm)
space between all hubs and
between any other equipment
in the rack. If mounting a hub on the
rack’s bottom shelf, also leave at le ast one
inch (25 mm) clearance from the bottom.
2 Connect Power and Power Up
Connect the AC power cord to the
Expansion Hub. Plug the power cord into
an outlet providing AC power (88-264
VAC). See 1 in graphic.
Power up the Expansion Hubs by flipping
the power switch from position 0 to
position
The
POWER
See 2 in graphic.
1.
LED on the Expansion hub
should be green (lit).
4-11
Page 10
3 Connect the MMF cables
Connect all MMF cables from the Main
Hub to the Expansion Hubs. The
LED should be green.
For proper connection between
the Main Hub ports and the
Expansion Hub ports, refer to the
numbering or color coding you
recorded when installing the
Main Hub.
4 Check Expansion Hub LEDs
Connect all MMF cables from the Main
Hub to the Expansion Hubs.
SYNC
The
LINK STATUS
and
LEDs on each
SYNC
Expansion Hub port should be red when
the UTP/STP cable is not yet connected to
the RAUs.
4-12 LGCell Installation
Page 11
5 Connect UTP/STP cables from RAUs
Connect all UTP /STP cables com ing from
WIRELESS
LGC
AC POWER
UP
DOWN
SYNC
MAIN HUB PORTS
Expansion Hub
™
POWER
LGCell
TS
LINK
STATUS
ANTENNA POR
SYNC
the RAUs to any available RJ-45
connector on the Expansion Hub.
The Expansion Hub fiber port
™
E
LINK STATUS
green or off.
and
LEDs should be
SYNC
LGCell
TENNA PORTS
Remote Antenna Unit (RAU) Installation
The
LINK STATUS
and
LEDs on each
SYNC
Expansion Hub port should remain red
until the RAU is connected on the other
end.
1 Connect Antennas
Connect an accessory antenna to each
RAU SMA connector. (The illustration
shows the RAU with an optional Rubber
Duck antenna.)
When connecting to the SMA
connector on the antenna,
NOT
over-tighten the
DO
connector. Firmly handtightening the connector is adequate.
4-13
Page 12
2 Mount RAUs and Antennas
Mount all RAUs in their assigned locations, using the enclosed screws. The
RAUs can mount above or below the ceiling, or to a wall.
For connecting and mounting an accessory directional antenna, refer to the
instructions shipped with that antenna.
4-14 LGCell Installation
Page 13
The Dual Band RAU mounting is shown below.
3 Connect UTP/STP Cable
Connect the UTP/STP cable coming from
the Expansion Hub to the RJ-45 connector
on the RAU.
4-15
Page 14
For the Dual Band RAU, connect the
900 MHz Expansion Hub cable to the top
connector and the 1800 MHz cable to the
bottom connector.
4 Check LEDs
The green
the red
ALARM
The green
POWER
LED
LED should be on and
LED should be off.
indicates that the RAU is
receiving power from the Expansion Hub
assigned to it.
RF Cable Connection
Before connecting any cables to the Main Hub, be sure the RF power
level does not exceed the input rating for the Main Hub.
“LGCell System Specifications” on page 16 in
Equipment
.)
Section 2, LGCell
For coverage applications, LGC Wireless recommends that you insert a lightning
arrestor or surge protector between a roof-mounted antenna and the Main Hub. If
you use a repeater, insert the lightning arrestor or surge protector between the
repeater and roof-mounted antenna.
The following illustration shows how to connect the LG
applications, with a repeater.
(See
for coverage
Cell
4-16 LGCell Installation
Page 15
Duplex
Output
Roof-Mounted Antenna
N-Male to N-Male Coaxial Cables
Surge Suppressor
To Ground Connector
Repeater
N-Male to N-Male Coaxial Cables
Uplink (Reverse) and
Downlink (Forward) -
Main Hub
™
LGCell
LGC WIRELESS
UP
AC POWER
SYNC
DOWN
POWER
UP
LINK
DOWN
STATUS
SYNC
TO EXPANSION HUB PORTS
LINK
UP
DOWN
LINK
UP
STATUS
DOWN
SYNC
LINK
2
STATUS
SYNC
1
4
STATUS
SYNC
3
Main
Hub
a072
Duplex Connector
This N-type female connector is typically used
to connect the LGC
to a repeater, roof-
ell
mounted antenna, or MBS, as shown on the
previous page.
Connect an N-type male RF coaxial cable to the
duplex N-type female connector (labeled
DUPLEX
) on the Main Hub back panel. If an Ntype male connectorized RF cable is not
available, use an RF adaptor. Connect the other
end of the coaxial cable to the roof-mounted
antenna, MBS, or repeater.
4-17
Page 16
The duplex ports have a variable gain. Please see the table for system
gain under “Maximum Input RF Power per Carrier vs. Number of
Carriers” on page 17 in
Section 2, LGCell Equipment
.
Downlink (Forward) and Uplink (Reverse) Connectors
Connect an N-type male RF coaxial cable to
the downlink N-type female connector
(labeled
FORWARD
) and an N-type male RF
coaxial cable to the uplink N-type female
DUPLEX
connector (labeled
back panel.
REVERSE
) on the Main Hub
FORWARD
REVERSE
For simplex MBSs,
be sure
the MBS
plugs into the downlink connector, and the
connector plugs into the uplink connector on the Main Hub.
Alarm Report Monitor
A separately orderable option for use with LG
alarm monitoring, reporting, and remote control system. Up to 255 remote-ARM
monitoring units can monitor up to 2,040 LG
communicates with the ARM software through a dial-up modem connection, using
an external or internal modem. A database of these devices is set up in a PC, with a
unique address for each device.
Connect the other ends of the coaxial cable to
the MBS. For diagrams of connecting LG
to specific MBS equipment, see
Connectivity
a060
downlink
.
coaxial cable connector
uplink
coaxial cable
, the Alarm Report Monitor is an
Cell
systems. Each remote-ARM unit
Cell
Section 5,
Cell
The ARM supports multiple users and tracks responsibility through log-in and logout procedures, using four security levels to protect critical system functions. It
features a graphic color status display, remote system reset control, alarm history
and control logs, security code management, and journal printer and paging options.
For ARM installation instructions, see
(ARM2000)
4-18 LGCell Installation
.
Appendix E – Alarm Report Monitor
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