General Dynamics Broand NODEBDZ1 Wireless Broadband Base Station User Manual Part 2

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Document ID	539447
Application ID	NaDGH8iA8QhRZm+X5IHgVA==
Document Description	Users Manual Part 2
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	158.57kB (1982105 bits)
Date Submitted	2005-05-05 00:00:00
Date Available	2005-05-05 00:00:00
Creation Date	0000-00-00 00:00:00
Producing Software	GNU Ghostscript 7.05
Document Lastmod	0000-00-00 00:00:00
Document Title	Microsoft Word - NodeB-V2-Rack Mount-Installation Guide.doc
Document Creator	PScript5.dll Version 5.2
Document Author:	pwarburg

Node B Rack Mount Installation Guide
Step 4 Mounting Installations
This section explains how to mount the Node B Rack Mount shelves into racks.
Mounting Rack
The figure below illustrates the 19inch mounting rack plus support shelves, some racks or
cabinets can use support rails. This construction can be within an enclosure or cabinet.
The support shelves or rails are specific to the rack, enclosure or cabinet being installed,
thus their specification shall be part of same selection.
Figure 6-6 : Mounting Rack + Support Shelves/Rails
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Node B Rack Mount Installation Guide
Precautions
The following precautions and checks are applicable to all mounting types:Connectors have been manufactured to fit their specific cables and funcition. Do not
modify or force connectors.
Check Site Plans for engineering approval.
Ensure that good ground resistance is available at the installation site ( 10 )
Where installed in an outdoor enclosure attention should be paid to cooling and
water+dust sealing prevention refer to Table 5-1.
Rack Mounting – Installing Digital Shelf
Ensure the shelf or shelf supports are secure, then insert the digital shelf into the rack and
secure from the front.
Notes:
If there is no rear access it may be required to make the ground connection prior to
inserting the shelf into the rack.
Where additional securing is required at the rear this shall require custom brackets
depending on the rack specifications/construction.
Figure 6-7: Installing Digital Shelf
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Node B Rack Mount Installation Guide
Rack Mounting – Installing Radio Shelf
Ensure the shelf or shelf supports are secure, then insert the radio shelf into the rack and
secure from the front.
Notes:
If there is no rear access it may be required to make the ground connection prior to
inserting the shelf into the rack.
Where additional securing is required at the rear this shall require custom brackets
depending on the rack specifications/construction.
Figure 6-8 : Installing Radio Shelf
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Node B Rack Mount Installation Guide
Step 5 Ground Installation
The main Node B ground cable shall use a minimum #2 AWG (Diameter 6.6mm or CSA
33mm2) stranded wire or equivalent earth braid.
The ground cable is terminated on the rear of both shelves of the Node B Rack Mount using
terminal that shall fit the M8 (7/16”) stud on the rear of each shelf.
The grounding wire is terminated onto the site grounding ring.
It should be noted that each site shall be designed for specific site, country or local
installation requirements.
CAUTION: Ensure that the earth braid or cable is bonded to a common earth with
equipment that is co-located with the Node B.
Figure 6-9 : Earth Connection on the rear of each shelf
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Node B Rack Mount Installation Guide
Step 6 DC Power Connection-Digital
The power supply input must be a nominal -48Vdc input, refer to Table 5-1.
The connection of the mains to DC supply is via the cable provided as part of the digital shelf
package.
The provided cable assembly has 3 metres of cable with a connector to provide connection
to the digital shelf. The tail ends of the cable are stripped and must be terminated to a
permanent connection junction/terminal block. The length of the cable may be shortened to
facilitate.
Notes:
Only the cable provided with the digital shelf should be used.
The connector is keyed to prevent wrong insertion.
Figure 6-10 : Power Connection to the digital shelf
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Node B Rack Mount Installation Guide
Step 7 DC Power Connection-Radio
The power supply input must be a nominal -48Vdc input, refer to Table 5-1
The connection of the mains to DC supply is via the cable provided as part of the radio shelf
package.
The provided cable assembly has 3 metres of cable with a connector to provide connection
to the radio shelf. The tail ends of the cable are stripped and must be terminated to a
permanent connection junction/terminal block. The length of the cable may be shortened to
facilitate.
Note: Only the cable provided with the radio shelf should be used.
Figure 6-11 : Power Connection to the radio shelf
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Node B Rack Mount Installation Guide
Step 8 Inter-Shelf Connections
The digital shelf is supplied with the shelf interface kit that contains the following items
• I/Q interface cable – 21wayD-hybrid
• Control interface cabe – 25wayD
• PSU control cable – 3way
The figure below illustrates the connection of each of these cables between the digital and
radio shelf.
Figure 6-12: Interface Cable Connection
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Node B Rack Mount Installation Guide
Step 9 Backhaul Connections (Iub) to INC
The Digital Shelf faceplate contains the backhaul connections. The installation can be
selected from the following interfaces
100BaseT
E3/T3
E1/T1
The connections are labeled and shown in the figure below.
Note: If the Node B is in not in the same site location as the serving INC, there must be no
greater than a 5 millisecond delay on the backhaul connection. This can be provided by
microwave or land based facilities with a reliability rate of 99.9995%.
Figure 6-13 : Backhaul Connections
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Node B Rack Mount Installation Guide
100BaseT Connection - (Eth)
Terminate the Ethernet cables with RJ45 connectors and the cables may be secured to the
brackets on the face of the Digital Shelf (Figure 6-13). Test the continuity for the Ethernet cables
with test equipment consisting of a main and a remote unit.
The termination for these interfaces is specified within the datasheets for the interfaces. The
specification for both cables should be CAT5 - 4 pair, screened cable, recommended Alcatel
LANmark-5 F2TP or equivalent.
Notes: Points to remember when installing Category 5 cables for the Node B 100Base T
Ethernet Backhaul.
1.
Do not kink the cable as the pairs are twisted to support 100Mhz operation and splitting the
pairs could reduce the performance of the cable.
2. When installing the RJ45 plugs onto the cable ensure pairs are untwisted to the minimum
and that the cable sheath is clamped within the connector. Again this is to ensure the
performance of the cable is not reduced.
The pin-outs for the external Ethernet interfaces are given in the following table & figure.
Source: http://www.dcbnet.com/notes/9611t1.html
Table 6-5 : Ethernet Pin-outs using RJ45
RX +
RX TX +
TX -
White w/Green
Green
White w/Orange
Blue
White w/Blue
Orange
White w/Brown
Brown
Figure 6-14 : Ethernet Pin-outs using RJ45
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Node B Rack Mount Installation Guide
E3/T3 Connections – (Tx + Rx)
Terminate the E3/T3 cables with BNC connectors and the cables may be secured to the brackets
on the face of the Digital Shelf (Figure 6-13). Test the continuity for the E3/T3 cables with test
equipment consisting of a main and a remote unit.
The termination for these interfaces is specified within the datasheets for the interfaces. The
specification for both cables should be 75 .
E1/T1 Connections – (1 to 4)
Terminate the E1/T1 cables with RJ45 connectors and the cables may be secured to the brackets
on the face of the Digital Shelf (Figure 6-13).
Test the continuity for the E1/T1 cables with test equipment consisting of a main and a remote
unit. The pinouts for this interface are shown in the table below.
The termination for these interfaces is specified within the datasheets for the interfaces. The
specification for both cables should be CAT5 - 4 pair, screened cable, recommended Alcatel
LANmark-5 F2TP or equivalent.
Table 6-6 : T1/E1 Pin-outs
T1 Pinouts
Rx (ring)
Rx (tip)
Not used
Tx (ring)
Tx (tip)
Not used
Not used
Not used
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Cable
White w/Green
Green
White w/Orange
Blue
White w/Blue
Orange
White w/Brown
Brown
E1 Pinouts
Rx (ring)
Rx (tip)
Not used
Tx (ring)
Tx (tip)
Not used
Not used
Not used
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Node B Rack Mount Installation Guide
Step 10 Antenna Cabling - Installation
Antennas and coaxial cable should be available at the site, and are part of the construction
checklist and general assumptions.
Two antennae per Node B Radio Shelf are optimum, allowing receiver diversity and transmit
diversity (note: if option fitted), therefore two coaxial cables per Node B are needed. Diversity can
be via polarization, in which case two feeder runs to the same antenna are needed, feeding
oppositely polarised sectors in the same physical enclosure.
Cables should be properly marked to indicate what antenna the coaxial cables are to be
connected to the Node B serving the sector or area.
In the case where only one feeder / antenna is being used, this must be connected to the top
connector when viewed from the front of the Node B.
The following installation describes the position of the antenna ports and designations.
Figure 6-15 : Antenna Connections & Routing
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Node B Rack Mount Installation Guide
Step 11 Alarm Connections
If local alarms are to be utilised two Dtype connectors are been provided on the Node B
digital shelf. The specifications for those interface requirements are below:The maximum input voltage is restricted to 39V for a 500A 8/20 uS pulse, with a minimum
working voltage of 18V. All six input circuits are the same.
Figure 6-16 : Alarm Outputs & Inputs
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Node B Rack Mount Installation Guide
Alarm Inputs
The 6 external alarm inputs are connected via the 15wayD female type located on the right
hand side of the digital shelf.
The external alarm inputs are opto-isolated current loops. The voltage and currents shall be
supplied by the external source.
The pin-out for the alarm inputs are shown in the table below.
Table 6-7 : Alarm Inputs
Pin
10
11
12
13
14
15
Signal
ALARM_IN_A0
ALARM_IN_B0
ALARM_IN_A1
ALARM_IN_B1
ALARM_IN_A2
ALARM_IN_B2
ALARM_IN_A3
ALARM_IN_B3
Earth
ALARM_IN_A4
ALARM_IN_B4
ALARM_IN_A5
ALARM_IN_B5
Earth
Earth
Alarm Outputs
The external alarm outputs are connected via the 9wayD female located on the right hand
side of the digital shelf.
The external alarm outputs shall be isolated normally-open relay contacts capable of
switching 100mA DC.
The pin-out for the alarm inputs are shown in the table below.
Table 6-8 : Alarm Outputs
Pin
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Signal
ALARM_OUT0+
ALARM_OUT0Earth
ALARM_OUT0+
ALARM_OUT0Earth
Earth
Earth
Earth
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Node B Rack Mount Installation Guide
Step 12 GPS Installation & Operation
The Node B has an external/remote GPS antenna and receiver. The connection for the
antenna (N-Type) is located on the Digital Shelf, Figure 6-17.
The GPS timing signal is used by the Node B for the TDD frame timing, so that all Node B's
in a network are synchronized. The GPS signal is also used by the master oscillator for a
frequency reference. The Node B can operate for two hours after a loss of GPS timing but a
gradual drift of the frame timing will result in system interference and a loss of Node B
selection / reselection capability.
A suitable Node B GPS antenna is shipped with every Node B. This antenna should be used
with a maximum of 15 metres cable of RG6 type cable plus male N-type connectors at each
end. For longer runs, the cable losses will affect signal strength and could impede GPS
signal performance.
For proper operation of the GPS receiver, the Node B GPS Antenna must have a clear
southern view of the sky. A site survey should be done before Node B installation to verify
that the Node B installation location is suitable for GPS reception.
A simple survey method is to take a handheld GPS receiver to the site and verify that GPS
lock is obtained in the location of the Node B installation. The handheld GPS should be able
to obtain a "locked" condition within 2 minutes of power-on, and should be able to see a
minimum of 4 satellites at all times.
The GPS receiver, integral to the Node B Digital shelf, is automatically enabled when the
Node B is powered and there are no adjustments or settings to be made by the user.
Note: When the Node B installation is on or near a tower or building wall, the GPS survey
should replicate the configuration.
When tower space is at a premium, or when long cable runs are involved, it may be
preferable to use a single GPS antenna to feed multiple Node Bs. It is possible to use one
GPS antenna with up to three units, providing that a passive splitter is used.
Caution: It is essential that in a ‘single GPS antenna supporting multi-Node B’ installation
only one of the Node B’s is designated and configured to supply the GPS antenna with +5V
via the GPS antenna cable as in a standard single installation.
The remaining subordinate Node Bs are provided their GPS signal through a DC block
device. Failure to do this may result in damage to the Node B. It should also be noted that in
the event of power failure to the DC supplying Node B, GPS reception to all Node B’s will be
affected.
Figure 6-17 : GPS Antenna
GPS Antenna
Field of Vision No
Obstructions
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Node B Rack Mount Installation Guide
Figure 6-18 : GPS Antenna Connection
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Node B Rack Mount Installation Guide
7. APPENDIX
Appendix A - Installation Check Card
Step
Action
Perform pre-installation site check
Parts shipped/tools required
Site Preparation
Mounting rack/cabinet installation
Grounding installation
DC Power Connection-Digital Shelf
DC Power Connection-Radio Shelf
Inter-shelf interface connections
Backhaul Connections to INC
10
Antennas Cabling - Installation
11
Alarm Connections
12
GPS Installation & Operation
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Complete
Comment
Page
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Node B Rack Mount Installation Guide
Appendix B - Glossary
GLOSSARY
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ADC
Analog to Digital Converter
ARP
Address Resolution Protocol
BTS
Base Transceiver Station
DAC
Digital to Analog Converter
Downlink
From Network to the User Equipment
DSCH
Downlink Shared Channel
ESD
Electro Static Discharge
EM
Element Manager
EIA
Engineering Industry Association
Ethernet
10BaseT or 100baseT
ETSI
European Telecommunications Standardization Institute
FCC
Federal Communication Commission
FPGA
Field Programmable Gate Array
GPS
Global Positioning System
HTTP
Hyper-Text Transfer Protocol
INC
Integrated Network Controller
IP
Internet Protocol
ISP
Internet Service Provider
ITFS
Instructional Television Fi xed Service
IUB
Interface Between the INC & NodeB
LMT
Local Maintenance Terminal
LNA
Low Noise Amplifier
MCP
Multimedia Communications Port
MAC
Media Access Control
Mcps
Mega Chips per Second
MMDS
Multichannel Multipoint Distribution Service
MSPS
Mega Samples Per Second
MTU
Maximum Transmission Unit
Node B
A UMTS Radio Base Station
PDU
Protocol Data Unit
PLL
Phase Locked Loop
QPSK
Quadrature Phase Shift Keying
RAM
Random Access Memory
RLC
Radio Link Control
SRAM
Static RAM
T1/E1
1536kbps/ 2048Kbps pipe
T3/E3
45Mbps or 34Mbps
UE
User Equipment
UMTS
Universal Mobile Telecommunications System
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Node B Rack Mount Installation Guide
GLOSSARY
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Uplink
From User Equipment to the Network
USB
Universal Serial Bus
USCH
Uplink Shared Channel
UPS
Uninterruptible Power Supply Unit
UTRAN
UMTS Terrestrial Radio Access Network
VSWR
Voltage Standing wave ratio
VCXO
Voltage Controlled Crystal Oscillator
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Node B Rack Mount Installation Guide
END OF DOCUMENT
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