Avaya Canada MCBTS1900A User Manual 8
Avaya Canada Corporation 8
8
| Download: |  |
| Mirror Download [FCC.gov] | |
| Document ID | 80062 |
| Application ID | M0RuWbY+ccpNUcAWLOzgFA== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 56.61kB (707565 bits) |
| Date Submitted | 2000-01-07 00:00:00 |
| Date Available | 1998-10-08 00:00:00 |
| Creation Date | 2001-05-02 20:55:05 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-05-02 20:55:06 |
| Document Title | 8 |
Appllcalmn m, Typc Acceptance Dnc' RF700147—98 NQ RTE L
FCC ID.AB6MCBTS]900A Issue: 1.0 NORTHERN TElECOM
Exhibit E
User Documentation
Date- July I7, 1998 Thisdocumemconlainshnpriclary andConfidenuallnfmmalion
of Norlhcrn Telecom, Inc.
Proprietary
CDMA MCBTS 1900
Cell Site Requirements
Issue 0.01
Document: CDMA MCBTS 1900 Cell Site Requiiements
June 18, 1998
NORTEL Wireless Network
CDMA BTS Radio De
BTS Radio Systems 2
Security Warning:
The information contained in this document is the property of Northern
Telecom Ltd The holder of this document shall keep all information con»
tained herein confidential and shall protect the same in whole or in pan
from disclosure and dissemination to all third parties.
FCC ID;ABGMCBT31900A
NQRTEL
NORTHERN TELECOM
CDMA MCBTS 1900 Outdoor
Cell Site Reqwrements NQRTEL
NORTHERN I lEtOM
1.0 EXECUTIVE SUMMARY. .
2.0 INTRODUCTION ....................
3.0 ENVIRONMENTAL REQUIREMENTS. . .
4.0 MECHANICAL REQUIREMENTS. .
4.1 Physical Specifications .........
4.1.1 Digital Enclosure .
4 2 RPM .............
4. 3 General Cabinet Anchoring.
4. 4 Pad Mounting ............
4.5 Rubber Isolation Pad . .
4.6 Cable Ingress/Egress ......
5.0 AC POWER REQUIREMENTS
5.1 Power Specifications ......
5.2 AC Connection ............
60 RF OVERLAY REQUIREMENTS
61 Cable connections .................... . .
7.0 GPS RECEIVER .......................... . . 14
8.0 CONNECTIONS AND CABLING ..... .
8.1 RFM Power Connections and Cables ..... . .
8.2 RFM Interconnect .................... L . . . 15
8.3 Fiber ................... . . 18
9.0 T1/El CONNECTIONS ..................... . . 20
10.0 GROUNDING ............. 4 .......... . . 21
10.1 BTS Grounding Architecture .
10.2 Antenna Grounding . . . .
10.3 RPM Grounding . . . .
10.4 Site Ground Ring . . .
Version 0.01
Draft prlnt date: June 18, 1995 Page i of ii
CDMA MCBTS 1900 Outdoor
Cell Site Requirements N QRTE L
NORTHERN TELMOM
Version 0.01
Draft Date: June 18, 1998 Page ii of ii
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN lElECOM CELL SITE REQUIREMENTS
1.0 EXECUTIVE SUMMARY
The CDMA MCBTS 1900 Outdoor BTS is a new product development for Nortel’s PCS
markets in North America. This document details cell site requirements for the full
MCBTS Outdoor product.
June 18, 1995 71-
Version 0101
CDMA MCBT51900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN iElEtOM CELL SITE REQUIREMENTS
2.0 INTRODUCTION
This document outlines the cell site engineering requirements for the CDMA MCBTS
1900 Outdoor System. lts intended audience is the cell site engineering team who will
use this information on the capabilities of the MCBTS to plan the installation of the
product at a cell site. The cell site engineering team should have expertise in
mechanical, grounding, power. telecom, and RF engineering.
Specifications in the Product Specification Agreement (PSA) shall take precedence over
information in this document.
The MCBTS cell site requirements fall into six main categories:
mechanical requirements
grounding requirements
power requirements
signal interface requirements x
antenna requirements A 1 ‘
carrier requirements Eat,
00-Oc-
The mechanical requirements cover the p
mounting requirements and restrictions an
requirements of the Digital Enclosur au|o Frequency Modules (RFM).
The MCBTS will be deployed in
outdoors. This document cov
- environments potentially both indoors and
TS outdoor version.
June 18, 1998 —2-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NGRIHERN IELKOM CELL SITE REQUIREMENTS
3.0 ENVIRONMENTAL REQUIREMENTS
The external environmental operating condition requirements are described in this
section. Table 1: lists the MCBTS thermal ratings.
Thermal Rating Range
Operating Range 40° c to +50‘7 C
(Normal Operation - 24 hours per day) (410 F to 1050 F)
Operating Range -55° c to +65“ C
(Short Term Operation » Not more than 72 hours continuous (320 C to 1200 C)
or 15 days per year
Non-operating Range (Storage) for 72 homs -50°C to +70°C
(-60"F to 160°F)
Table 1: MCBTS Therm ating
The altitude specifications are listed in Table 2-
Range (m)
1800
(Normal 0p
Non- —60 to 15000
Table , CBTS Altitude Rating
The relative humidity specifications are listed in Table 3:.
Relative Humidity Range
Dperaljng Range 5 to 95%
(Normal Operation - 24 Hours Per Day) (Non-Condensing)
Non—Operating Range (Storage for 96 hours) 90,9591, RH at 40°C
Table 3: MCBTS Humidity Rating
June 18, 1998 -3-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIECDM CELL SITE REQUIREMENTS
4.0 MECHANICAL REQUIREMENTS
4.1 Physical Specifications
The MCBTS is comprised of a digital enclosure (DE) and radio frequency modules
(RPM). The digital enclosure is designed to be mounted on the ground while the RFM's
are designed to be remote mounted.
4.2 Digital Enclosure
The DE is the main structural component in the MCBTS. The digital enclosure will house
the rectifiers, equipment shelves, internal heating/cooling tray, heat exchanger internal
loop fan assembly and provide for all necessary internal cable routing/management.
The preliminary outside dimensions lorthe DE are illustrated below. These dimensions
referto the unpackaged height and are excluding the DEl which attaches to the left side
and the heat exchanger which mounts on the top.
The dimensions are:
- Depth: 30"
- Height: 57" Max (excluding 15" h'
- Width: 30" ,
The DE with no shelves will wei ed 190 lbs.
ft?
4.3 Digital Enclosure Inte e f
2‘s?
The Digital Enclosure Interface (DEI) for the MCBTS enclosure assembly provides
entrance of AC power, network and alarm connections, and connection to the ground
ring. The dimensions of the DE! are shown below.
The dimensions are:
- Depth: 30" (same as overal depth of Digital Enclosure)
- Height: 72”
- Width: 12”
The weight of the empty DEI is estimated to be 225 lbs The loaded module weight after
integration of equipment is expected to be 700 lbs.
Cable access to the DE is via the DE interface (DEl)
June 18, 1993 .4.
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE I. CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORIHERN lEtEEOM CELL SITE REQUIREMENTS
4.4 External Battery Cabinet
The MCBTS external battery cabinet (EBC) is an optional stand alone enclousre that
provides additional battery backup to the digital enclosure. It will be located adjacent to
the DE at the installation site and allow for one additional EBC to be daisy chained
together to provide additional battery backup.
The EBC utilizes the DE as its external enclosure for environmental protection. Four
lifting eyes are provided at the top of the EEC for installation at the cell site.
June 18' 1998 »5-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN TELEtOM CELL SITE REQUIREMENTS
72"
ISOMETRIC VIEW
June 18, 1998 -6-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIEEOM CELL SITE REQUIREMENTS
<—>I_ 12”
13”
June 18, 1998 -7-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORlHERM lElEtOM CELL SITE REQUIREMENTS
4.4.1 RFM
The preliminary outside dimensions for the RPM are shown below. These dimensions
refer to the unpackaged height and are excluding the EOM which attaches to the bottom
of the RPM on the right hand side.
The dimensions are:
- Depth: 12.1"
- Height: 27.92"
- Width: 34.1"
The complete RFM will weight an estimated 120 lbs.
[27 92]
(34 ll)! . » -~—~~4— -
L__
FlFM Mounting (preliminary)
The RFM is intended to be installed onto standard Unistrut type C-channel mounting
hardware. There is a mounting bracket that will be pre-installed onto the uni-strut. This
June 18, 1998 -8-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE I- CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIEEOM CELL SITE REQUIREMENTS
will provide mounting, locating and hanging features that will allow the RFM to be
installed and hang in place until it can be fastened. The mounting plate serves as a
demarcation point for the interconnect.
4.5 General Cabinet Anchoring
The DE is designed to be hoisted by a crane. Four mounting points are provided on the
top of the cabinet for hoisting.
4.6 Pad Mounting
The MCBTS shall be mounted on a concrete slab.
4.7 Rubber Isolation Pad
The DE shall be mounted on a rubber pad.
4.8 Cable IngressIEgress
Cable access to the RFM is
June 18, 1998 -9-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIKOM CELL SITE REQUIREMENTS
5.0 AC POWER REQUIREMENTS
5.1 Power Specifications
Commercial ac power will be supplied to the DE as a single/split—phase, 120/240 Vac
(nominal, or 120/208 Vac two phase), four conductor (L1, L2, Neutral and Ground),
connection from an external service entrance. The ac power input specifications are as
follows:
Nominal Input Voltage: 240/120 Vac, single, split phase, 60 Hz
Input Voltage Range: 178 to 264 Vac (or 105 to 132 Vac line to neutral)
Input Frequency: 47 - 63 Hz
Power Factor: greater than 90°/o at nominal line voltage and frequency
Input Current Rating: 70A, 2-pole circuit breaker.
5.2 AC Connection
AII external power enters the system via the DEI. wire (L1, L2, Neutral, and
ground), nominal 240/120V (or 208/120V), 100 , supply must be supplied by
the customer. Primaw power is by connection ‘ ility. If the DEI is to be the
service entrance, the neutral-ground jump c panel should be connected.
OthenNise, it should be removed. Auxiliary ass is via the external ac generator
receptacle connector. {E%
k? :
aria; ii I
. as; L
Signal Interface quantity wire rating/gauge Connector Description
AC utility 1 (BC + grid) 70A Bkr, AWG M, 90 0C Refer to
Generator Sockel 1 (3 -C + gnd) 70 A Bkr, AWG $64, 90 0C Refer to
Table 4: AC Utility Connections
June 18, 1998 -10-
Verslon 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPHlETARY NORTHERN TELECOM CELL SITE REQUIREMENTS
6.0 RF OVERLAY REQUIREMENTS
The MCBTS has several overlay options.
Basic installation configuration (single channel)
Simple overlay on mini configuration
The minimum requirement (1 carrier) is 2 antennas per sector. One for the main antenna
(Tx and one diversity path) and one for the other diversity path. A two carrier system can
also be supported with two antennas. In this case, each antenna carries one carrier on
the Tx side and one diversity path on the Rx side. With a three carrier system a third
antenna is added to carry just the Tx of the third carrier.
Number of Carriers
Table 5: S na Provisioning
6.1 Cable connections @
The optical link cable, SRFM DC ' er cable, and the GPS antenna cable have a
provisionable length. When ordering, the length must be specified and fall below the
maximum length specifications indicated.
The quantity of inter-SRFM cables required depends upon the application. In a single
carrier system, no inter-SRFM cables are required. In 2 or3 carrier systems, inter-SFlFM
cables are required.
Two sample configurations will be considered for illustrative purposes. These are
i) a basic system with no redundancy and
ii) a premium system with all redundancy.
June18.1998 -11-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIHOM CELL SITE REQUIREMENTS
0‘ sector B sector 7 sector
2’ E a
E m z»
4) SI 0)
a w a
”I T’I
LLI ILI
EOM Power EOM Power EOM Power
June 18, 1998 -12»
VerSIon 0.01
CDMA MCBTS 1900 OUTDOOR NaRTE L CDMA ETS RADIO DEVELOPMENT
PROPRIETARY NDRINERN TELECOM CELL SITE REQUIREMENTS
on sector
E main
' y
Evmain
g;
1.55
ELLI
LU
EOM Power EOM Power
E maingoun
E_diversity
frequency 1 frequency 2
June18.1998 -13-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN TEIKDM CELL SITE REQUIREMENTS
frequency 1 frequency 2 frequency 3
_ou|1 I
E_dIversity
E_main
E_main
E main oun
Egmaln
E main oun
E,diversily
Egmain
E_main oul2
EOM Power
June18,1998 —14»
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIEEUM CELL SITE REQUIREMENTS
5‘
Sec10r a
HxRFAOUT O
RxRF_OUT_1
TEST
POWER IN
Sector a
n_ou(1
E_diversi|y
Egmai
RxH F_OUT_0
RxRF_OUT41
2 carriers per sector
overlay on mini-HTS
POWER IN
J _I_
5 s a n 5 DE!
u. o v. I— a:
E I}: If 3 “1
n— E x I— g
I D.
Minl-BTS
June 18, 1998 —15-
Version 001
CDMA MCBTS 1900 OUTDOOR NERTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN [ELEKUM CELL SITE REQUIREMENTS
7.0 GPS RECEIVER
Timing and frequency reference information provided by the GPS receiver is critical to
the proper operation of the MCBTS subsystem. One or two GPS antennas may be
connected. The GPS antenna receives the signals from multiple satellites, and the
signal is supplied to the GPS receiver in the MCBTS via a coaxial cable. Precautions
should be taken to ensure that the GPS antenna is clear of obstructions and interference.
The antenna should be installed to provide the best view of the entire sky. A complete
view of the sky from horizon to horizon will enable the receiver to observe as many GPS
satellites as possible. This allows the GPS receiver to select the best combination of
GPS satellites for best performance. Ifthe GPS antenna must be installed with a Imited
view of the sky, it may not be able to track a sufficient number of satellites to determine its
position. The GPSR must track at least 4 satellites simultaneously for some period of
time in survey mode. Once the GPSR has an accurate fix on its location, it can maintain
accurate timing signals to the BTS while tracking only 1 satellite.
The maximum distance between the MCBTS and t S antenna is set by the
maximum allowable cable loss of 7? dB. The c . and type is required by the
GPS receiver for determining the delay from t , na 0 the receiver.
Cable Connector Type
On MCBTS end On Antenna end
._|
N-lype male TNC— type male
Max Loss Max Length
77 dB 7? fl
Tab PS Antenna Interface
June 18, 1998 -16-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN TElEtOM CELL SITE REQUIREMENTS
8.0 CONNECTIONS AND CABLING
8.1 RFM Power Connections and Cables
DC power is conducted to individual RFM’s via two conductor (—48\/, BR) shielded
(ground) cables; one cable for each RFM. The size of the power cable used depends on
the cable run length. The DC power cable from the DEI enters the RFM enclosure via
the Power Entry Module (PEM).
The specifications for these external RFM dc cables are as follows:
0 Less than 3000 feet, use 2 conductor we AWG shielded cable
- Between 300 and 600 feet, use 2 conductor we
- Allowed Cable Voltage Drop: 6 Vdc maximum (-48V and Fltn combined)
' Cable Terminations: two—hole lugs at the DEI BRFI plate, twist-lock type
connector at FlFM (to mate with the PEM)
Shield Termination: grounded at both the RF “rid DEI ends, and at the base of
the tower.
t.
14 , ‘. ‘
The RFM DC cable is sized for voltage drop, n a? acit .
The optical link enters the RFM via the elec %module (EOM).
8.2 RFM Interconnect
Table 14 below shown the RF nterconnect single carrier configuration. Table
ct multi carrier configuration.
E7pw lrel 4avoc
E‘gnd GND GND DEI
E_shield GND GND DEI
Electra-Optical Module (EOM)
Emevat 529.145 Mbs optical
E7rthwd1 629.145 Mbs optical
EJ‘vasZ 629.145 Mbs optical
E_rlm_lwd2 629.145 Mbs optical
Supplies primary DC power
to the RPM.
Primary or Redundant digi-
tal link to Digital Enclosure
Primary or Redundant digi
tal link to Digital Enclosure
Misc.
gnd GND (66 AWG 1 RFM RFM Mount-
L ing Plate
Table 7 RFM Interconnect
connect to RFM chassis
(cold plate)
June18.1998 -17-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN lElECUM CELL SITE REQUIREMENTS
at E‘ in the name designates a connection external m the RPM Assembly,
The next table shows the interconnect forthe multicarrier configuration.Table of RFM
Assembly Interconnect (multiple carrier per sector)
E _pwr’/ret
m__—-fi-_
—m_—n DE. HFM
Electro- Optical Module (EOM)
“M_ Primaw or Redundant digi-
_—mn?fim 'a' "M Digi‘a' EM“
629 45 Mbs optical 00352 Primary or Redundam digl
E rim lwdz 629145 Mbs optical coonsz lal linklfl Digital Enclosu'e
Supplies primary DC power
lo the RPM.
E diversity Olher HFM/
RFFE
diversity - - LFA
E_maln_oul1
main_out1
E_main_ou12
main70u12 1850 1910 MHz N- -type coax
E_d|vers|ly,out 1850- 1910 MHz N type coax | 1 Only used when deployed
diversilyjut 1850 1910 MHz N- -type coax | 1 LPA WI"- 3 Mini-BTS Overlay
GND ”6 AWG FlFM connect to RFM chassis
(cold plate)
grid
E_qnd Tower connect Io lower or local
site ground
gnd RFM Mount- connect to RFM chassis
ing Plale (cold plate)
Table 8 RFM Interconnect
a. E, in the name designates a connection external to the RPM Assembly.
Juna1B,1998 -18-
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTE L CDMA BTS RADIO DEVELOPMENT
PROPHiETARY NORTHERN IHKOM CELL SITE REQUIREMENTS
MHU Assembly
N type connector 9 pin clsub
Al] N Iypes on LFA have
intcgmled prolectmn 2'26 VDC @<2A
I-grd
4-siyalarm
shielded
Combo Dsnb
{3 2(4) coax - dala rx/Lx
f 2 power - 5 VDC/nn
1 1 ground
2x diff, pair - 4 pins
nno uiuu‘g
1 ground
shielded
Zlno‘uww g
(“vamp—g r
4 fibers
1 ix, 1 rx
2 redundant
(single—earner)
Figure 1 RFMA Interconnect
Optical Link Interconnect Design Details.
June 18, 1998 -19-
Version 0,01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN TELELOM CELL SlTE FtEQUlREMENTS
The optical link encompasses the physical parts from CORE transceiver to RFM
transceiver. This includes transceivers, fibers, connectors, splice pints, and fiber
management. Figure 17 below shows the potential layout. The reference for the
information on the optical link is taken from "MCBTS Optical Link General Specification";
TL-OMOO-20-97, Issue 1.0.
8.3 RFM Optical Link Interconnect
The baseline design has the following configuration.
CORE fiber to fiber interconnect - splice point
(4 trays, 12 fibers/tray, existing Nonel tray & tool)
Watertight housing
(DEl not watertight)
////////////////////////////////////////
Figure 2 RFM Optical Llnk Baseline Design
8.4 Fiber
The optical link to the RFM will contain 4 fibers per link. Two receive and transmit pairs
for redundancy, unless multicarrier deployment is used, when soft redundancy is handled
by the other carrier and only two fibers are used (othertwo left unused). The main portion
of the link will run on outside plant cable capable of vertical ascent, terminated at the
June 18, 1998 -20»
Version 0.01
CDMA MCBTS 1900 ou‘rDoon N27 RTE L CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN lEtEtDM CELL SITE REQUIREMENTS
FtFM by an standard SIECOR optifit termination. The transceivers will be housed in a
heated optical termination unit which is connected to the RPM by electrical interconnect.
The high speed signals will be carried by 4 coaxial links.
Fiber interconnect and rearrangement features are required to interconnect the FlFM‘s to
the Digital enclosure. Current baseline design has the digital enclosure provisioned with
a optical link harness, fiber storage and management, as well as a flexibility point (splice
point) in the DEI cabinet capable of handling all 48 fibers in the fully configured case. The
flexibility point need not be fully configured for the single carrier application, and splice
trays specified are off the shelf from multiple vendors.
The RFM will have an EOM unit which depends upon the length of the fibre run from the
DE to the FtFM,
June18, 1998 .21,
Version 0.01
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN iEIECUM CELL SITE REQUIREMENTS
9.0 T1/E1 CONNECTIONS
The CM module has up to 6 T1 interfaces connected through the faceplate. The cable
will probably be lumped in two 12 wire bundles terminated at the CM by two 15 pin
dsubs.
The MCBTS may be configured with anywhere from 1 to 6 T1/E1 links. Each link
requires 2 twisted pair. All the twisted pairs may be combined into a single cable along
with the subscriber loop twisted pair. Customer interface will be through the DEI
accessible T1 protection terminal block.
(Daisy chain configuration)
June 18, 1998 -22-
Version om
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN IEIECDM CELL SITE REQUIREMENTS
10.0 GROUNDING
10.1 BTS Grounding Architecture
The FtFM is grounded to its mounting structure, whethera tower, wall, building or pole. If
the structure is non-conductive (e.g. wooden pole) it shall be provided with a ground
cable as part of the site ground.
The FtFM mounting structure and BTS cabinets both connect to the site ground ring. #2
AWG cables less than ten feet long are used for these primary, external ground
connections.
10.2 Antenna Grounding
Each GPS antenna will be grounded at the antenna mast and again at the cable entry
point (coax cable shield) inside the DEI. Similarly the cell site antenna(s) are grounded
at the tower and may be further protected by Iightnirfids on the mountingn structure,
protruding above the antennas, preventing directs r', £0 them.
a»
he RFM shall be bonded to the
a be bonded to the external ground
ed copper conductor. Provision shall be
tion of a No. 2 AWG, 2-hole lug connector.
10.3 RFM Grounding
The shield of each coaxial cable cable con
FtFM chassis. Additionally, the RFM
system (e.g. tower) using No. 2 Awe—
made on the RPM cable bulkhe.
ain electronics cabinet to the FlFM shall be
e main enclosure end (main ground plate).
The DC power cable connectln
grounded at both the FtFM end a g
10.4 Site Ground Ring
A peripheral grounding ring, usually buried around the site perimeter, or routed along the
outer edge of the roof of a building, provides the main site ground. It provides an
equipotential reference to minimize differential voltages during lightning surges. It
provides an equipotential reference to minimize differential voltages during lightning
surges. It consists of a #2 AWG (or larger) uninsulated, tinned copper conductor.
Connections are made to it using C—tap clamps. All conductive surfaces orobjects on the
sites should be connected to it, especially the tower or other FtFM mounting structure.
The ground ring makes earth contact through ground electrodes, typically copper-clad
stakes 3m (10 ft) long, driven into the ground at 2.5 to 3m (8—10 ft) intervals around the
ground ring and tower, and clamped to it. The resistance to earth of the ground ring shall
be 25 ohms or less, with a preferred value of less than 5 ohms. See Nortel 08412200
and DSAPGSBA (Cell Site Power and Grounding) for further information.
June 18, 1998 23-
Version 0.01
cell
amanna(s) backhaul
ac power
GPS
amenn3(s)
equip't
mounting
ground elsvtrodes
CDMA MCBTS 1900 OUTDOOR NQRTEL CDMA BTS RADIO DEVELOPMENT
PROPRIETARY NORTHERN TEIKUM CELL SITE REQUIREMENTS
11.0 REFERENCES
[1]
I2]
[3]
[4]
CMS-MTX/CDMA MCBTS 1900 Outdoor and MCBTS Base Platform. Product
Specification Agreement.
CDMA MCBTS 1900 Outdoor. Power Protection and Grounding Design
Specification.
CDMA MCBTS 1900 Outdoor. General Specification.
MCBTS Optical Link NTGSOSAA, NTGSO1 17, NTGSOOQS Functional Agreement.
Packaging Concepts Methodology.
[5] MCBTS Digital Enclosure Mechanical Assembly NTGS13AA Functional
Agreement. Packaging Concepts Methodology.
[6]
June 18, 1998 -25»
Version 0.01
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : Yes Create Date : 2001:05:02 20:55:05 Producer : Acrobat Distiller 4.0 for Windows Modify Date : 2001:05:02 20:55:06-04:00 Page Count : 29EXIF Metadata provided by EXIF.tools