Motorola 89FC5763 A Users manual

Page 1

APPLICANT: MOTOROLA INC. EQUIPMENT TYPE: ABZ89FC5763-A

INSTRUCTION MANUALS

Due to the highly specialized application of this radio equipment, there is no ‘operational’ or ‘user’ manual. The instruction and service manual for this base radio are available on a compact disk (CD). The title of this CD is

‘EBTS and integrated Site Controller, SYSTEM MANUALS’, the part number is 98P80800A03-A (0/07/2001-UP). Pertinent sections of the manual have been extracted and included as part of this filing package in the form of an electronic pdf document.

Upon request, published and/or printed manuals will be sent to the commission and/or telecommunication certification body (TCB). All of the descriptions and schematics included in this filing package are current as of the submission date.

EXHIBIT 8

Page 2

APPLICANT: MOTOROLA INC. EQUIPMENT TYPE: ABZ89FC5763-A

TUNE-UP PROCEDURE

There is no field tune-up procedure. All adjustments are software controlled and are pre-set at the factory. Certain station operating parameters can be changed via man-machine interface (MMI) commands, within predetermined limits. Examples include transmit / receiver operating frequencies and power level.

EXHIBIT 9

Page 3

Global Telecommunications Solutions Sector

ENHANCED BASE TRANSCEIVER SYSTEM (EBTS)

SYSTEM INSTALLATION AND TESTING

VOLUME 1 OF 3

68P80801E35-A

ECCN 5E992

Page 4

FCC INTERFERENCE WARNING

The FCC requires that manuals pertaining to Class A computing devices must contain warnings about possible interference with local residential radio and TV reception. This warning reads as follows:

Note: This equipment has been tested and found to comply with the limits for a Class A digital device , pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

INDUSTRY OF CANADA NOTICE OF COMPLIANCE

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

COMMERCIAL WARRANTY (STAND ARD)

Motorola radio communications products (the “Product”) is w arranted to be free from defects in material and workmanship for a period of ONE (1) YEAR (except for crystals and channel elements which are warranted for a period of ten (10 years) from the date of shipment. Parts including crystals and channel elements, will be replaced free of charge for the full warranty period but the labor to replace defective parts will only be provided for One Hundred-Twenty (120) days from the date of shipment. Thereafter purchaser must pay for the labor involved in repairing the Product or replacing the parts at the prevailing rates together with any transportation charges to or from the place where warranty service is provided. This express warranty is extended by Motorola, 1301 E. Algonquin Road, Schaumburg, Illinois 60196 to the original end use purchaser only, and only to those purchasing for purpose of leasing or solely for commercial, industrial, or governmental use.

THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED WHICH ARE SPECIFICALLY EXCLUDED, INCLUDING WARRANTIES OF MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MOTOROLA BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW.

In the event of a defect, malfunction or failure to conform to speciﬁcations established by Motorola, or if appropriate to speciﬁcations accepted by Motorola in writing, during the period shown, Motorola, at its option, will either repair or replace the product or refund the purchase price thereof. Repair at Motorola's option, may include the replacement of parts or boards with functionally equivalent reconditioned or new parts or boards. Replaced parts or boards are warranted for the balance of the original applicable warranty period. All replaced parts or product shall become the property of Motorola.

This express commercial warranty is extended by Motorola to the original end user purchaser or lessee only and is not assignable or transferable to any other party. This is the complete warranty for the Product manuf actured by Motorola. Motorola assume no obligations or liability for additions or modiﬁcations to this warranty unless made in writing and signed by an ofﬁcer of Motorola. Unless made in a separate agreement between Motorola and the original end user purchaser, Motorola does not warrant the installation, maintenance or service of the Products.

Motorola cannot be responsible in any way for any ancillary equipment not furnished by Motorola which is attached to or used in connection with the Product, or for operation of the Product with any ancillary equipment, and all such equipment is expressly excluded from this warranty. Because each system which may use Product is unique, Motorola disclaims liability for range, coverage, or operation of the system as a whole under this warranty.

This warranty does not cover:

a) Defects or damage resulting from use of the Product in other than its normal and customary manner.

b) Defects or damage from misuse, accident, water or neglect

c) Defects or damage from improper testing, operation, maintenance installation, alteration, modiﬁcation, or adjusting.

d) Breakage or damage to antennas unless caused directly by defects in material workmanship.

e) A Product subjected to unauthorized Product modiﬁcations, disassemblies or repairs (including without limitation, the addition to the Product of non-Motorola supplied equipment) which adversely affect performance of the Product or interfere with Motorola's normal warranty inspection and testing of the Product to verify any warranty claim.

f) Product which has had the serial number removed or made illegible.

g) A Product which, due to illegal to unauthorized alteration of the software/ﬁrmware in the Product, does not function in accordance with Motorola's published speciﬁcations or the FCC type acceptance labeling in effect for the Product at the time the Product was initially distributed from Motorola.

This warranty sets forth the full extent of Motorola's responsibilities regarding the Product. Repair, replacement or refund of the purchase date, at Motorola’s option is the exclusive remedy. IN NO EVENT SHALL MOTOROLA BE LIABLE FOR DAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, FOR ANY LOSS OF USE, LOSS OR TIME, INCONVENIENCE, COMMERCIAL LOSS, LOST PROFITS OR SAVINGS OR OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGE ARISING OUT OF THE USE OR INABILITY TO USE SUCH PRODUCT, TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW.

SOFTWARE NOTICE/WARRANTY

Laws in the United States and other countries preserve for Motorola certain exclusiv e rights for copyrighted Motorola software such as the exclusive rights to reproduce in copies and distribute copies of such Motorola software. Motorola software may be used in only the Product in which the software was originally embodied and such software in such Product may not be replaced, copied, distributed, modiﬁed in any w a y, or used to produce any derivative thereof. No other use including without limitation alteration, modiﬁcation, reproduction, distribution, or reverse engineering of such Motorola software or exercise of rights in such Motorola software is permitted. No license is granted by implication, estoppel or otherwise under Motorola patent rights or copyrights.

This warranty extends only to individual products: batteries are excluded, but carry their own separate limited warranty.

In order to obtain performance of this warranty, purchaser must contact its Motorola salesperson or Motorola at the address ﬁrst above shown, attention Quality Assurance Department.

This warranty applies only within the ﬁfty (50) United States and the District of Columbia.

Page 5

EBTS System Manual - Vol 1 System Installation and Testing

2 System

Installation and

Testing

About This V olume

Volume 1 of the Enhanced Base Transceiver System (EBTS) manual, System Installation and Testing , provides the experienced service technician with an

overview of the EBTS operation and functions, and contains information on installing and testing the 800 MHz, 900 MHz, and 1.5 GHz EBTSs and the Multi-Sector Expansion Rack (MSER).

Target Audience

The EBTS has three major components:

❐ Generation 3 Site Controller (Gen 3 SC) or integrated Site Controller (iSC)

❐ Base Radios (BRs)

❐ RF Distribution System (RFDS)

The BRs are described in Volume 2, Base Radios , and RFDS are described in Volume 3, RF Distribution Systems (RFDS) . Detailed information about the Gen 3 SC is contained in the Gen 3 SC Supplement Manual, 68P880801E30 or iSC Supplement Manual 68P1098E05 (this manual is incomplete without the Gen 3 SC or iSC Supplement.)

The information in this manual is current as of the printing date. If changes to this manual occur after the printing date, they will be documented and issued as Schaumburg Manual Revisions (SMRs).

The target audience of this document includes ﬁeld service technicians responsible for installing, maintaining, and troubleshooting the EBTS.

In keeping with Motorola’s ﬁeld replaceable unit (FRU) philosophy, this manual provides sufﬁcient functional information to the FRU level. Please refer to the appropriate section of this manual for removal and replacement instructions.

68P80801E35-A 9/1/2001 13

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System Installation and Testing EBTS System Manual - Vol 1

Reference Materials (MSER)

In addition to this manual, the following technical manuals are related to the MSER and may be needed for installation or maintenance.

Publication Title Description

68P80801E30 Generation 3 Site

Controller (Gen 3 SC) System Manual

68P81098E05 Integrated Site Controller

(iSC) System Manual

68P81089E50 Motorola Standards and

Guidelines for Communications Sites

Provides detailed information about the Gen 3 SC including a description of major subsystems, components, installation, testing, troubleshooting, and other information

Provides detailed information about the iSC including a description of major subsystems, components, installation, testing, troubleshooting, and other information.

A useful reference for the installation of ﬁxed network equipment. This manual provides guidelines and procedures to ensure the quality of Motorola radio equipment installation, integration, optimization, and maintenance. Field service personnel should be familiar with the guidelines and procedures contained in this publication.

Motorola Literature Distribution Center

To order printed copies of the publications listed above, please contact:

Motorola Literature Distribution Center

2290 Hammond Drive Schaumburg, Illinois 60173 Phone: 847-576-2826

iDEN Online

This manual is available from iDEN online (http://AccessSecure.mot.com). iDEN online is a secured web site that provides Motorola customers with critical information about iDEN subscriber and infrastructure.

Some of the features of this web site include:

❐ Quick reference to the iDEN organization, answers to frequently asked

questions, and deﬁnitions to iDEN acronyms.

❐ Product training information; including course descriptions, prerequisites,

training planning tools, schedules, pricing, and registration information.

❐ New product announcements and marketing bulletins.

❐ System product performance and customer satisfaction.

To request an account for iDEN online, please call 847-576-9541.

14 68P80801E35-A 9/1/2001

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EBTS System Manual - Vol 1 System Installation and Testing

Reference Materials (MSER)

Maintenance Philosophy

The EBTS has been designed using a Field Replaceable Unit (FRU) maintenance concept. To minimize system down time, faulty FRUs may be quickly and easily replaced with replacement FRUs. This helps to restore normal system operation quickly.

Due to the high percentage of surface mount components and multi-layer circuit boards, ﬁeld repair is discouraged. Faulty or suspect FRUs should be returned to the Motorola Customer Support Center for further troubleshooting and repair.

Each FRU has a bar code label attached to its front panel. This label identiﬁes a sequential serial number for the FRU. Log this number whenever contacting the Motorola Customer Support Center. For complete information on ordering replacement FRUs, or instructions on how to return faulty FRUs for repair, contact:

Nippon Motorola LTD. OR Motorola Customer Support Center Tokyo Service Center 1311 East Algonquin Road 044-366-8860 Schaumburg, Illinois 60196

(800) 448-3245 or (847) 576-7300

Technical Support Service

Motorola provides technical support services for installation, optimization, and maintenance of its ﬁxed network equipment. Before calling the Motorola Customer Support Center, please note the following information:

❐ Where the system is located

❐ The date the system was put into service

❐ A brief description of problem

❐ Any other unusual circumstances

68P80801E35-A 9/1/2001 15

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System Installation and Testing EBTS System Manual - Vol 1

Available Field Replaceable Units

The items listed in the following tables are available as FRUs. The listings are divided into the following FRU categories:

❐ System General – FRUs that can be used throughout any system

❐ Single Channel Base Radio- FRU used within a Single Channel Base Radio.

❐ 800 MHz QUAD Channel Base Radio- FRU used within a QUAD Channel

Base Radio.

❐ 900 MHz QUAD Channel Base Radio- FRU used within a QUAD Channel

Base Radio.

❐ Generation 2 Base Radio- FRU used within a Generation 2 Base Radio

❐ Base Radio – FRU used within a Base Radio

❐ GEN 4 Duplexed RFDS – FRUs used within, or exclusively used with, the

following:

❍ An RF Cabinet equipped with an 800 MHz GEN 4 Duplexed RFDS

❍ An Expansion RF Cabinet utilizing GEN 4 Duplexed assemblies

❍ A Single Rack, Redundant Controller (SRRC) and/or Single Rack,

Single Controller (SRSC) EBTS and associated expansion cabinets

❐ Cavity Combining RFDS – FRUs used within, or exclusively used with, an

800 MHz Cavity Combining RFDS

❐ 900 MHz Duplexed RFDS – FRUs used within, or exclusively used with, an

900 MHz Duplexed RFDS

❐ 900 MHz QUAD RFDS- FRUs used within, or exclusively with, a 900 MHz

QUAD RFDS

❐ Hybrid Expansion RFDS – FRUs used within a Hybrid Expansion RFDS

❐ Site Controller Hardware – FRUs used for site control and alarm

monitoring

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EBTS System Manual - Vol 1 System Installation and Testing

Available Field Replaceable Units

System General FRUs

P/N Description

TLN3348 Open Rack - 43 Rack Units

TLN3349 Solid Door - 43 Rack Units

TLN3350 Door Louvered - 43 Rack Units

TLN3351 Cover Flat Top Louvered

TLN3352 Cover Base

TLN3353 Base Stationary

55-82097V01 Lock, Standard

Single Channel Base Radio FRUs

P/N Description

CLN1282 Integrated Base Radio Chassis

CLN1283 Integrated Receiver Module, 800 MHz

CLN1355 Power Ampliﬁer, 60 Watt, 900 MHz

CLN1356 Integrated Receiver Module, 900 MHz

CLN1357 Exciter Module, 900 MHz

TLF2020 Power Ampliﬁer, 40 Watt, 800 MHz

TLN3334 Base Radio Controller

TLN3335 Power Ampliﬁer, 70 Watt, 800 MHz

TLN3337 Exciter Module, 800 MHz

TLN3338 DC Power Supply Module

TLN3425 Base Radio Controller (DCMA), 1500 MHz

TLN3426 Power Ampliﬁer, 40 Watt, 1500 MHz

TLN3427 Receiver Module, 1500 MHz

TLN3428 Exciter Module, 1500 MHz

TLN3429 AC Power Supply Module (DCMA)

68P80801E35-A 9/1/2001 17

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System Installation and Testing EBTS System Manual - Vol 1

Available Field Replaceable Units

Generation 2 FRUs

P/N Description

CLN1282 Integrated Base Radio Chassis

CLN1283 Integrated Receiver Module, 800 MHz

TLF2020 Power Ampliﬁer, 40 Watt, 800 MHz

DLN6446 Enhanced Base Radio Controller

TLN3335 Power Ampliﬁer, 70 Watt, 800 MHz

DLN1204 Low Noise Exciter

TLN3337 Exciter Module, 800 MHz

TLN3338 DC Power Supply Module

TLN3429 AC Power Supply Module (DCMA)

800 MHz QUAD Channel Base Radio FRUs

P/N Description

CLN1496 800 MHz QUAD Receiver

CLN1497 800 MHz QUAD Exciter/Base Radio Controller

CLN1498 800 MHz QUAD DC Power Supply

CLN1499 800 MHz QUAD Power Ampliﬁer

DLN1200 800 MHZ QUAD Base Radio Chassis

900 MHz QUAD Channel Base Radio FRUs

P/N Description

DLN1201 900 MHz QUAD Receiver

DLN1203 900 MHz QUAD Exciter/BR Controller

CLN1498 900 MHz QUAD DC Power Supply

DLN1202 900 MHz QUAD Power Ampliﬁer

DLN1200 900 MHz QUAD Base Radio Chassis

18 68P80801E35-A 9/1/2001

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EBTS System Manual - Vol 1 System Installation and Testing

Available Field Replaceable Units

GEN 4 Duplexed RFDS FRUs

800 MHz QUAD

P/N

CLN1349 Power Supply

CLN1350 Triple 2-Way Combiner Deck w/o Isolators

CLN1351

(NOTE 1)

CLN1353 Dual 3-Way Combiner Deck w/ Isolators

CLN1362 4-Way Rx Low Noise Ampliﬁer/

CLN1363 6-Way Rx Low Noise Ampliﬁer/

CLN1366A Triple Through w/Isolators

CLN1401 Alarm Board

CLN1402 I/O Board

CLN1403 Duplexed TTA Field Retroﬁt Kit

CLN1405 Duplexed TTA Alarm Module

CLN1481 Dual 2-Way Combiner Deck w/ Isolators

NOTES:

1. This item associated with expansion.

Triple 2-Way Combiner Deck w/o Isolators

Multicoupler Subassembly

Description 900 MHz QUAD

P/N

DLN1206

Cavity Combining RFDS FRUs

P/N Description

CKN1010 Rx Cavity Expansion Hardware: Main to Expansion Cabinet

TLF1900 Low Gain Ampliﬁer Receiver Tray

TLF1980 Tx RF Transfer Switch for 800 MHz Cavity PCCH

TLG1002 Tx RF Transfer Switch for 1500 MHz Cavity PCCH

TLN3392 DC Low-Noise Ampliﬁer Power Supply and Alarm Tray

TLN3393 DC Injector RF Distribution

TLN3394 Power Monitor Assembly

TTF1540 Isolator/Load Assembly

TTF1560 Cavity Combiner Channels 3 & 4

TTF1570 Cavity Combiner Channel 5

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System Installation and Testing EBTS System Manual - Vol 1

Available Field Replaceable Units

900 MHz QUAD Duplexed FRUs

P/N Description

DLN1206 4-Way Rx Multicoupler

DLN 1205 Rx Preselector

See Note 1 900 MHz Duplexer

See Note 1 800/900 MHz Diplexer

NOTE: 1- Refer to iDEN Price Book for FRU details

900 MHz Duplexed RFDS FRUs

P/N Description

CLN1380

(NOTE 1)

CLN1381 Triple 2-Way Combiner Deck w/ Isolators

CLN1382 DC & Alarm Expansion Tray

CLN1393 Three-Branch Rx Multicoupler Tray w/ 6-Way

CLN1394

(NOTE 1)

NOTES:

1. This item associated with expansion.

Single 2-Way Combiner Deck w/o Isolators

LNAs

6-Way Rx Low Noise Ampliﬁer/Multicoupler Subassembly

Hybrid Expansion RFDS

P/N Description

CLN1285 Hybrid/Coupler Expansion Load Assembly

CLN1313 Duplexed Retroﬁt 3 Branch TTA, V03

CLN1314 Duplexed Retroﬁt 3 Branch TTA, V01

CLN1315 Duplexed Retroﬁt 3 Branch TTA, V06

CLN1325 Hybrid Expansion Receive Cabling, Primary Rack

TFF1090 Bandpass Transmit Filter

TLF1990 Primary Isolator

TLF2000 Secondary Isolator

TLN3358 Duplexed RF Expansion Tray (Non-5th Channel)

TLN3439 Duplexed RF Expansion Tray (5th Channel)

20 68P80801E35-A 9/1/2001

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EBTS System Manual - Vol 1 System Installation and Testing

Available Field Replaceable Units

Site Control Hardware

P/N Description

DLN1103 GEN 3 Site Controller

DLN1107 Environmental Alarm System

DPN1007 Gen3 SC Power Supply

68P80801E35-A 9/1/2001 21

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System Installation and Testing EBTS System Manual - Vol 1

General Safety Information

The following general safety precautions must be observed during all phases of operation, service, and repair of the equipment described in this manual. The safety precautions listed below represent warnings of certain dangers of which we are aware. You should follow these warnings and all other safety precautions necessary for the safe operation of the equipment in your operating environment.

Read and follow all warning notices and instructions marked on the product or included in this manual before installing, servicing or operating the equipment. Retain these safety instructions for future reference. Also, all applicable safety procedures, such as Occupational, Safety, and Health Administration (OSHA) requirements, National Electrical Code (NEC) requirements, local code requirements, safe working practices, and good judgement must be used by personnel.

Refer to appropriate section of the product service manual for additional pertinent safety information.

Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modiﬁcations of equipment.

Identify maintenance actions that require two people to perform the repair. Two people are required when:

A repair has the risk of injury that would require on person to perform ﬁrst

aid or call for emergency support. An example would be work around high voltage sources. A second person may be required to remove power and call for emergency aid if an accident occurs to the ﬁrst person.

Use the National Institute of Occupational Safety and Health (NIOSH) listing

equation to determine whether a one or two person lift is required when a system component must be removed and replaced in its rack.

If troubleshooting the equipment while power is applied, be aware of the live circuits.

DO NOT operate the transmitter of any radio unless all RF connectors are secure and all connectors are properly terminated.

All equipment must be properly grounded in accordance with Motorola Standards and Guidelines for Communications Sites “R56” 68P81089E50 and speciﬁed installation instructions for safe operation.

Slots and openings in the cabinet are provided for ventillation. To ensure reliable operation of the product and protect it from overheating, these slots and openings must not be blocked or covered.

Only a qualiﬁed technician familiar with similar electronic equipment should service equipment.

Some equipment components can become extremely hot during operation. Turn off all power to the equipment and wait until sufﬁciently cool before touching.

22 68P80801E35-A 9/1/2001

Page 15

EBTS System Manual - Vol 1 System Installation and Testing

General Safety Information

Human Exposure Compliance

This equipment is designed to generate and radiate radio frequency (RF) energy by means of an external antenna. When terminated into a non-radiating RF load, the base station equipment is certiﬁed to comply with Federal Communications Commission (FCC) regulations pertaining to human exposure to RF radiation in accordance with the FCC Rules Part 1 section 1.1310 as published in title 47 code of federal regulations and procedures established in TIA/EIA TSB92, Report on EME Evaluation for RF Cabinet Emissions Under FCC MPE Guidelines, Compliance to FCC regulations of the ﬁnal installation should be assessed and take into account site speciﬁc characteristics such as type and location of antennas, as well as site accessibility of occupational personnel (controlled environment) and the general public (uncontrolled environment). This equipment should only be installed and maintained by trained technicians. Licensees of the FCC using this equipment are responsible for insuring that its installation and operation comply with FCC regulations Part 1 section 1.1310 as published in title 47 code of federal regulations.

Whether a given installation meets FCC limits for human exposure to radio frequency radiation may depend not only on this equipment but also on whether the “environments” being assessed are being affected by radio frequency ﬁelds from other equipment, the effects of which may add to the level of exposure. Accordingly, the overall exposure may be affected by radio frequency generating facilities that exist at the time the licensee’s equipment is being installed or even by equipment installed later. Therefore, the effects of any such facilities must be considered in site selection and in determining whether a particular installation meets the FCC requirements.

FCC OET Bulletin 65 provides materials to assist in making determinations if a given facility is compliant with the human exposure to RF radiation limits. Determining the compliance of transmitter sites of various complexities may be accomplished by means of computational methods. For more complex sites direct measurement of power density may be more expedient. Additional information on the topic of electromagnetic exposure is contained in the Motorola Standards and Guidelines for Communications Sites publication. Persons responsible for installation of this equipment are urged to consult the listed reference material to assist in determining whether a given installation complies with the applicable limits.

In general the following guidelines should be observed when working in or around radio transmitter sites:

- All personnel should have electromagnetic energy awareness training.

- All personnel entering the site must be authorized.

- Obey all posted signs.

- Assume all antennas are active.

- Before working on antennas, notify owners and disable appropriate transmitters.

- Maintain minimum 3 feet clearance from all antennas.

- Do not stop in front of antennas.

- Use personal RF monitors while working near antennas.

- Never operate transmitters without shields during normal operation.

- Do not operate base station antennas in equipment rooms.

68P80801E35-A 9/1/2001 23

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System Installation and Testing EBTS System Manual - Vol 1

General Safety Information

For installations outside of the U.S., consult with the applicable governing body and standards for RF energy human exposure requirements and take necessary steps for compliance with local regulations.

References:

TIA/EIA TSB92 “Report on EME Evaluation for RF Cabinet Emissions Under FCC MPE Guidelines”, Global Engineering Documents: http://globl.ihs.com/

FCC OET Bulletin 65 “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields”; http://www.fcc.gov/oet/ rfsaftey/

Motorola Standards and Guidelines for Communications Sites, Motorola manual 68P81089E50

IEEE Recommended Practice for the Measure of Potentially Hazardous Electromagnetic Fields-- RF and Microwave, IEEE Std. C95.3-1991, Publication Sales, 445 Hoes Lane, P.O. Box 1331, Piscattaway, NJ 08855-1331

IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 Iscattaway, NY 08855-1331GHz, IEEE C95.1-1991, Publication Sales, 445 Hoes Lane, P.O. Box 1331

24 68P80801E35-A 9/1/2001

Page 17

Global Telecommunications Solutions Sector

ENHANCED BASE TRANSCEIVER SYSTEM (EBTS)

VOLUME 2 OF 3

BASE RADIOS

68P80801E35-A

ECCN 5E992

Page 18

About This Volume

Base Radios

Volume 2 of the Enhanced Base Transceiver System (EBTS) manual, Base Radios , provides the experienced service technician with an overview of the EBTS operation and functions, and contains information regarding the 800 MHz, 900 MHz, 1500 MHz Single Channel and 800 MHz and 900 MHz QUAD Channel Channel base radios.

The EBTS System has three major components:

❐ Generation 3 Site Controller (Gen 3 SC) or an integrated Site Controller (iSC)

❐ Base Radios (BRs)

❐ RF Distribution System (RFDS)

Installation and testing is described in Volume 1, System Installation and Testing , and RFDS are described in Volume 3, RF Distribution Systems (RFDS) . Detailed information about the Gen 3 SC is contained in the Gen 3 SC Supplement Manual,

68P80801E30. Detailed information about the iSC is contained in the iSC Supplement Manual, 68P81098E05

The information in this manual is current as of the printing date. If changes to this manual occur after the printing date, they will be documented and issued as Schaumburg Manual Revisions (SMRs).

Target Audience

The target audience of this document includes ﬁeld service technicians responsible for installing, maintaining, and troubleshooting the EBTS.

Global T elecommunications Solutions Sector

68P80801E35-A 9/1/2001 11

1301 E. Algonquin Road, Schaumburg, IL 60196

Page 19

Base Radios EBTS System Manual - Vol 2

Maintenance Philosophy

Nippon Motorola LTD. OR Motorola Customer Support Center Tokyo Service Center 1311 East Algonquin Road 044-366-8860 Schaumburg, Illinois 60196

(800) 448-3245 or (847) 576-7300

Technical Support Service

❐ Where the system is located.

❐ The date the system was put into service.

❐ A brief description of problem.

❐ Any other unusual circumstances.

12 68P80801E35-A 9/1/2001

Page 20

EBTS System Manual - Vol 2 Base Radios

General Safety Information

Refer to appropriate section of the product service manual for additional pertinent safety information.

Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modiﬁcations of equipment.

Identify maintenance actions that require two people to perform the repair. Two people are required when:

A repair has the risk of injury that would require one person to perform ﬁrst

Use the National Institute of Occupational Safety and Health (NIOSH) listing

equation to determine whether a one or two person lift is required when a system component must be removed and replaced in its rack.

If troubleshooting the equipment while power is applied, be aware of the live circuits.

DO NOT operate the transmitter of any radio unless all RF connectors are secure and all connectors are properly terminated.

All equipment must be properly grounded in accordance with Motorola Standards and Guidelines for Communications Sites “R56” 68P81089E50 and speciﬁed installation instructions for safe operation.

Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and protect it from overheating, these slots and openings must not be blocked or covered.

Only a qualiﬁed technician familiar with similar electronic equipment should service equipment.

Some equipment components can become extremely hot during operation. Turn off all power to the equipment and wait until sufﬁciently cool before touching.

68P80801E35-A 9/1/2001 13

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Base Radios EBTS System Manual - Vol 2

General Safety Information

Human Exposure Compliance

Whether a given installation meets FCC limits for human exposure to radio frequency radiation may depend not only on this equipment but also on whether the “environments” being assessed are being affected by radio frequency ﬁelds from other equipment, the effects of which may add to the level of exposure. Accordingly, the overall exposure may be affected by radio frequency generating facilities that exist at the time of the licensee’s equipment is being installed or even by equipment installed later. Therefore, the effects of any such facilities must be considered in site selection and in determining whether a particular installation meets the FCC requirements.

FCC OET Bulletin 65 provides materials to assist in making determinations if a given facility is compliant with the human exposure to RF radiation limits. Determining the compliance of transmitter sites of various complexities may be accomplished by means of computational methods. For more complex sites direct measurement of power density may be more expedient. Additional information on the topic of electromagnetic exposure is contained in the Motorola Standards and Guideline for Communications Sites publication. Persons responsible for installation of this equipment are urged to consult the listed reference material to assist in determining whether a given installation complies with the applicable limits.

In general the following guidelines should be observed when working in or around radio transmitter sites:

- All personnel should have electromagnetic energy awareness training.

- All personnel entering the site must be authorized.

- Obey all posted signs

- Assume all antennas are active

- Before working on antennas, notify owners and disable appropriate transmitters.

- Maintain minimum 3 feet clearance from all antennas.

- Do not stop in front of antennas.

- Use personal RF monitors while working near antennas.

- Never operate transmitters without shields during normal operation.

- Do not operate base station antennas in equipment rooms

14 68P80801E35-A 9/1/2001

Page 22

EBTS System Manual - Vol 2 Base Radios

General Safety Information

References:

TIA/EIA TSB92 “Report on EME Evaluation for RF Cabinet Emissions Under FCC MPE Guidelines”, Global Engineering Documents: http://globl.ihs.com/

FCC OET Bulletin 65 “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields”; http://www.fcc.gov/oet/ rfsaftey/.

Motorola Standards and Guideline for Communications Sites, Motorola manual 68P81089E50.

IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, IEEE C95.1-1991,

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Base Radios EBTS System Manual - Vol 2

This Page Intentionally

Left Blank

16 68P80801E35-A 9/1/2001

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EBTS System Manual - Vol 2 Base Radio

Base Radio

Overview

This chapter provides an overview of the 800/900/1500 MHz Legacy, 800 MHz Generation 2 Single Channel, 800 MHz and 900 MHz QUAD Channel Base Radios (BRs) along with technical information. The section topics are listed and described in Table 1.

Section Page Description

Generation 2 Single Channel 800 MHz Base Radio Overview

QUAD Channel 900 MHz Base Radio Overview

QUAD Channel 800 MHz Base Radio Overview

Legacy Single Carrier 800 MHz Base Radio Overview

3 Describes Controls and Indications,

Theory of Operation, and Speciﬁcations for the 800 MHz Generation 2 Base Radio.

11 Provides information on the 900 MHz

QUAD Channel Base Radio’s Controls and Indications, Speciﬁcations and Theory of Operation.

16 Provides information on the 800 MHz

QUAD Channel Base Radio’s Controls and Indications, Speciﬁcations and Theory of Operation.

21 This section provides information on the

Legacy Single Channel 800/900/1500MHz Base Radio including Controls and Indications, Speciﬁcations and Theory of Operation.

FRU Number to Kit Number Cross Reference

Table 1

68P80801E35-A 9/1/2001 1

FRU Number to Kit Number Cross Reference

Description FRU Number Kit Number

Single Channel 800/900/1500 MHz BRC TLN3334 CLN1469

Single Channel BRC (MCI) TLN3425 CLN1472

Enhanced Base Radio Controller DLN6446 CLN1653

900 MHz QUAD Channel BRC DLN1203 CLF6242

800 MHz QUAD Channel BRC CLN1497 CLF1560

Page 25

Base Radio EBTS System Manual - Vol 2

NOTE

The Single Carrier Base Radio section covers the 800 MHz, 900 MHz and 1500 MHz Legacy and 800 MHz Generation 2 versions of the Base Radio (BR). Information is presented generally for all models. Information that is model speciﬁc noted in the text.

NOTE

For Generation 2 BR, both the 800 MHz Exciter and the 800 MHz Low Noise Exciter modules are supported subject to Table 2 on page 4.

NOTE

For QUAD Channel 800 MHz BR use, all Single Carrier BR modules have undergone redesign. Therefore, Single Carrier BR modules are incompatible with the QUAD Channel 800 MHz BR. QUAD Channel 800 MHz BR modules are incompatible with the Single Carrier BR.

Do not attempt to insert QUAD Channel 800 MHz BR modules into a Single Carrier BR or Single Carrier BR modules into a QUAD Channel 800 MHz BR.

NOTE

For QUAD Channel 900 MHz BR use, all Single Carrier BR modules are incompatable with the 900 MHz QUAD Channel BR. 900 MHz QUAD Channel BR modules are incompatable with the Single Carrier BR.

Do not attempt to insert QUAD Channel 900 MHz BR modules into a Single Carrier BR or Single Carrier BR modules into a QUAD Channel 900 MHz BR.

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EBTS System Manual - Vol 2 Base Radio

Generation 2 Single Channel 800 MHz Base Radio Overview

The BR provides reliable digital RF communication capabilities in a compact software-controlled design. Increased channel capacity is provided through voice compression techniques and Time Division Multiplexing (TDM).

The BR contains the ﬁve FRUs listed below:

❐ Enhanced Base Radio Controller (EBRC)

❐ Exciter or Low Noise Exciter

❐ Power Ampliﬁer

❐ Power Supply (DC)

❐ Receiver

The modular design of the BR also offers increased shielding and provides easy handling. All FRUs connect to the backplane through blindmate connectors. Figure 1 shows the front view of the BR.

POWER SUPPLY

LOW NOISE EXCITER

Figure 1 Generation 2 Base Radio (Typical)

INSERT ONLY IN SLOT RX2 WITH BACKPLANE 0183625X

SERVICE ACCESS

ENHANCED CONTROL

RESETBR PS EX PA CTL R1 R2 R3

POWER AMPLIFIER

3X RECEIVER

EBTS282 101497JNM

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Base Radio EBTS System Manual - Vol 2

Generation 2 Single Channel 800 MHz Base Radio Overview

Generation 2 Single Channel Radio Controls and Indicators

The Power Supply and EBRC contain controls and indicators that provide a means for monitoring various status and operating conditions of the BR, and also aid in fault isolation. The controls and indicators for both modules are discussed in the Power Supply and EBRC sections of this chapter.

The Power Supply contains two front panel indicators; the EBRC contains eight front panel indicators. The Power Supply contains a power switch used to apply power to the BR. The EBRC contains a RESET switch used to reset the BR.

Generation 2/EBRC Compatibility

Table 2 EBRC Compatibility

Module Software Revision Compatible

Exciter R01.00.xx- R01.03.xx No

Exciter R01.04.xx and higher Yes

System Software SR 9.15 or higher Yes

System Software Lower than SR 9.15 No

Single Receiver all versions No

3X Receiver all versions Yes

40W Power Ampliﬁer all versions Yes

70W Power Ampliﬁer all versions Yes

The Enhanced Base Radio Controller (EBRC) serves as the main controller for the Base Radio. The EBRC provides signal processing and operational control for other Base Radio modules. Figure 1 shows a top view of the EBRC module with the cover removed. The EBRC module consists of two printed circuit boards (EBRC board and LED display board), a slide-in housing, and associated hardware.

❐ The EBRC is only compatible with System Software Release SR 9.15 or later.

Any system running an older (i.e. lower revision number) must be updated to at least SR 9.15 prior to installation.

❐ The EBRC module is compatible with Legacy Base Radios that support

multiple receiver module assemblies.

❐ The EBRC module is not compatible with Legacy Base Radios that support

single receiver module assemblies.

❐ The Generation 2 Base Radio is compatible with all versions of power

supplies.

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EBTS System Manual - Vol 2 Base Radio

Generation 2 Single Channel 800 MHz Base Radio Overview

❐ The Generation 2 Base Radio is compatible with all 800 MHz 70W and 40W

Power Ampliﬁers.

❐ The EBRC module is only compatible with Legacy Exciter (containing

revision number R1.04.xx and higher) or the Low Noise Exciter.

Determining FRU and Kit Revisions

For Generation 2 BR/EBRC

These commands will return all available FRU and Kit Revision numbers. Use these to determine installation requirements:

1. Connect one end of the RS-232 cable to the service computer.

2. Connect the other end of the RS-232 cable to the Service Access port, located

on the front panel of the EBRC module.

3. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the Control Module front panel. At the prompt, hit a Carriage Return on the service computer to enter the test application mode. Using the password motorola, log in to the BR.

:> login -uﬁeld password: motorola

ﬁeld>

4. Collect revision numbers from the station by typing the

following command:

ﬁeld> fv -oplatform ﬁeld>

5. If all modules return revision numbers of the format “Rxx.xx.xx”, then all

revision numbers are present. In that case, veriﬁcation requires no further action. If revision numbers return as blank, or not in the format “Rxx.xx.xx”, contact your local Motorola representative or Technical Support.

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Base Radio EBTS System Manual - Vol 2

Generation 2 Single Channel 800 MHz Base Radio Overview

For Legacy Single Channel BR/BRC

1. Connect one end of the RS-232 cable to the service computer.

2. Connect the other end of the RS-232 cable to the STATUS port, located on the

front panel of the BRC.

3. Using the ﬁeld password, login to the BR.

4. Collect revision numbers from the station by typing the

following commands:

BRC>dekey BRC>test_mode BRC>get brc_rev_no BRC>get rx1_rev_no BRC>get rx2_rev_no BRC>get rx3_rev_no BRC>get pa_rev_no BRC>get ex_rev_no

(if BR is 3 branch)

BRC>

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EBTS System Manual - Vol 2 Base Radio

Generation 2 Single Channel 800 MHz Base Radio Overview

5. If all modules return revision numbers of the format “Rxx.xx.xx”, then all

revision numbers are present and no further action is required. Log out and repeat steps 1 through 4 for each additional BR.

If revision numbers were returned as blank or not in the format “Rxx.xx.xx”, contact your local Motorola representative or Technical Support.

Generation 2 Single Channel BR General Speciﬁcations

General speciﬁcations for the Generation 2 BR are listed in Table 2.

Table 3 Generation 2 BR General Speciﬁcations

Speciﬁcation Value or Range

Dimensions:

Height

Width

Depth

Operating Temperature 32˚ to 104˚ F (0˚ to 40˚ C)

Storage Temperature -22˚ to 140˚ F (-30˚ to 60˚ C)

Rx Frequency Range:

800 MHz iDEN 806 - 825 MHz

Tx Frequency Range:

800 MHz iDEN 851 - 870MHz

Tx – Rx Spacing:

800 MHz iDEN 45 MHz

Channel Spacing 25 kHz

Frequency Generation Synthesized

Digital Modulation M-16QAM

Power Supply Inputs:

VDC -48 VDC (-41 - 60 VDC)

Diversity Branches Up to 3

5 EIA Rack Units (RU)

19" (482.6 mm)

16.75" (425 mm)

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Base Radio EBTS System Manual - Vol 2

Generation 2 Single Channel 800 MHz Base Radio Overview

Gen 2 Single Channel BR Transmit Speciﬁcations

The Generation 2 BR transmit speciﬁcations are listed in Table 4.

Table 4 Transmit Speciﬁcations

Speciﬁcation Value or Range

Average Power Output:

(800 MHz) 40 W PA

(800 MHz) 70 W PA

Transmit Bit Error Rate (BER) 0.01%

Occupied Bandwidth 18.5 kHz

Frequency Stability * 1.5 ppm

RF Input Impedance 50 Ω (nom.)

FCC Designation (FCC Rule Part 90):

(800 MHz) 40 W PA

(800 MHz) 70 W PA

* Stability without site reference connected to station.

5 - 40 W

5- 70 W

ABZ89FC5772-A ABZ89FC5763-A

Gen 2 Single Channel BR Receive Speciﬁcations

The receive speciﬁcations are listed in Table 5.

Table 5 Receive Speciﬁcations

Speciﬁcation Value or Range

Static Sensitivity †:

800 MHz BR -108 dBm (BER = 8%)

BER Floor (BER = 0.01%) ≥ -80 dBm

IF Frequencies

1st IF (All bands):

2nd IF:

800MHz

Frequency Stability * 1.5 ppm

RF Input Impedance 50 Ω (nom.)

FCC Designation (FCC Rule Part 15):

800 MHz BR ABZ89FR5762

† Measurement referenced from single receiver input port of BR. * Stability without site reference connected to station.

73.35 MHz (1st IF)

450 kHz (2nd IF)

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Base Radio EBTS System Manual - Vol 2

Generation 2 Single Channel 800 MHz Base Radio Overview

Generation2 Single Channel BR Theory of Operation

The BR operates in conjunction with other site controllers and equipment that are properly terminated. The following description assumes such a conﬁguration. Figures 5 shows an overall block diagram of the BR.

Power is applied to the DC Power input located on the BR backplane. The DC Power input is connected if -48 VDC or batteries are used in the site.

Power is applied to the BR by setting the Power Supply power switch to the ON position. Upon power-up, the BR performs self-diagnostic tests to ensure the integrity of the unit. These tests are primarily conﬁned to the EBRC and include memory and Ethernet veriﬁcation routines.

After the self-diagnostic tests are complete, the BR reports any alarm conditions present on any of its modules to the site controller via Ethernet. Alarm conditions may also be veriﬁed locally using service computer and the STATUS port located on the front of the EBRC.

The software resident in Flash Memory on the EBRC registers the BR with the site controller via Ethernet. Once registered, the BR software is downloaded via resident FLASH- or Ethernet and is executed from RAM. Operating parameters for the BR are included in this download. This software allows the BR to perform call processing functions.

The BR operates in a TDMA (Time Division Multiple Access) mode. This mode, combined with voice compression techniques, provides an increased channel capacity ratio of as much as 6 to 1. Both the receive and transmit signals of the BR are divided into 6 individual time slots. Each receive slot has a corresponding transmit slot; this pair of slots comprises a logical RF channel.

The BR uses diversity reception for increased coverage area and improved quality. The Receiver module within the BR contains up to three receivers. Two Receivers are used with two-branch diversity sites, and three Receivers are used with three-branch diversity sites.

All Receivers within a given BR are programmed to the same receive frequency. The signals from each receiver are fed to the EBRC where a diversity combining algorithm is performed on the signals. The resultant signal is processed for error correction and then sent to the site controller via Ethernet with the appropriate control information regarding its destination.

The transmit section of the BR is comprised of two separate FRUs, the Exciter and Power Ampliﬁer (PA). Several PA FRUs are available, covering different applications and power levels; these are individually discussed as applicable in later subsections.

The Exciter processes the information to transmit from the EBRC in the proper modulation format. This low level signal is sent to the PA where it is ampliﬁed to the desired output power level. The PA is a continuous keyed linear ampliﬁer. A power control routine monitors the output power of the BR and adjusts it as necessary to maintain the proper output level.

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EBTS System Manual - Vol 2 800/900/1500 MHz Base Radios

Base Radio Overview

3X RECEIVER MODULE

FROM RFDS

(RECEIVER

ANTENNA)

FROM

RFDS (RECEIVER ANTENNA)

FROM

RFDS (RECEIVER

ANTENNA)

EXTERNAL

REFERENCE

ETHERNET

RFDS

(TRANSMIT

ANTENNA)

5 MHZ

TO/FROM

STATUS

PORT

(RS-232)

RF IN

RF OUT

3-WAY

SPLITTER

MIXER

LPF/

PRESELECT/

PREAMP/

IMAGE FILTER

LPF/

PRESELECT/

PREAMP/

IMAGE FILTER

LPF/

PRESELECT/

PREAMP/

IMAGE FILTER

VCO/

SYNTH

ENHANCED BASE RADIO CONTROLLER MODULE

ETHERNET

INTERFACE

HOST

SDRAM

POWER AMPLIFIER MODULE

COMBINER

FINAL

LINEAR

AMPS

BAND PASS

FILTER

BAND PASS

FILTER

BAND PASS

FILTER

SPI BUS

LATCHES

AMP

BAND PASS

FILTER

BAND PASS

FILTER

BAND PASS

FILTER

SPI BUS

SPLITTER

DIGITAL

ATTEN.

CIRCUIT

DIGITAL

ATTEN.

CIRCUIT

DIGITAL

ATTEN.

CIRCUIT

ADDRESS DECODE,

A/D CONVERTER

EEPROMFLASHBUFFERS

ADDRESS DECODE,

MEMORY , A/D CONVERTER

MEMORY,

2.1 MHZ

SPI BUS

LINEAR DRIVER

5 MHZ

PLL/ VCO

TRANSMIT

RECEIVE

CUSTOM

RECEIVER

CUSTOM

RECEIVER

CUSTOM

RECEIVER

16.8 MHZ

DSP

AGC

TISIC

RF IN

1PPS & SLOT TIMING

DSP BUS

SERIAL BUS

SPI BUS

DATA/CLOCK

RF FEEDBACK

SPI BUS

DATA/CLOCK

DC POWER SUPPLY MODULE

MAIN INVERTER

CIRCUITRY

CLOCK

GENERATOR

CIRCUITRY

DIAGNOSTICS

CIRCUITRY

SPI BUS

EXCITER MODULE

2.1 MHZ

970 MHZ

(1025 MHZ)

VCO/SYNTH

FREQUENCY

TRANLIN

IF IN IF OUT

LINEAR RF AMPLIFIER

DOUBLER

237 MHZ

(180.6 MHZ)

VCO

267 KHZ 133 KHZ

ADDRESS DECODE,

MEMORY , A/D CONVERTER

EXCITER

FEEDBACK IN

RF OUT

INPUT FILTER

BOARD

133 KHZ

START-UP INVERTER

CIRCUITRY

+14.2 V

INVERTER

CIRCUITRY

+5 V

INVERTER

CIRCUITRY

EXTERNAL DC INPUT 41 - 60 VDC

+14.2 VDC TO BACKPLANE

+5 VDC TO BACKPLANE

+28 VDC TO BACKPLANE

NOTES:

1. 2-Branch systems must have a 50Ω load (P/N 5882106P03) installed on Antenna Port #3.

2. Set the RX_FRU_CONFIG parameter as follows:

3. Where two frequencies are given, frequency without parentheses applies to 800 MHz BR only and frequency with parentheses applies to 900 MHz BR only.

2-Branch Systems: 12 3-Branch Systems: 123

Figure 5 Generation 2 Single Channel 800 MHz Base Radio Functional Block Diagram

EBTS284 053001JNM

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Base Radio Controllers

Overview

This chapter provides information on Base Radio Controllers (BRCs):

Chapter T opic Page Description

Enhanced Base Radio Controller 2 Includes information on the Enhanced Base Radio

900 MHz QUAD Channel Base Radio Controller

800 MHz QUAD Channel Base Radio Controller

800/900/1500 MHz Legacy Base Radio Controller

15 Provides an 800 MHz QUAD Channel BRC Controls and

25 Provides an overview, 800 MHz QUAD Channel BRC

35 Provides an overview, outline of controls and indications as

Controller’s Controls and Indications and Theory of Operation

Indications as well as the controller’s Theory of Operation

Controls and Indications as well as the controller’s Theory of Operation

well as the controller’s Theory of Operation

FRU Number to Kit Number Cross Reference

Base Radio Controller (BRC) Field Replaceable Units (FRUs) are available for the iDEN EBTS. The FRU contains the BRC kit and required packaging. Table 1 provides a cross reference between BRC FRU numbers and kit numbers.

Table 1

Description FRU Number Kit Number

Single Channel 800/900/1500 MHz Base Radio Controller

Single Channel Base Radio Controller (1500 MHz MCI)

Enhanced Base Radio Controller DLN6446 CLN1653

QUAD Channel 900 MHz Exciter/BR Controller

QUAD Channel 800 MHz Exciter/BR Controller CLN1497 CLF1560

FRU Number to Kit Number Cross Reference

TLN3334 CLN1469

TLN3425 CLN1472

Global Telecommunications Solutions Sector

68P80801E35-A 9/1/2001 1

1301 E. Algonquin Road, Schaumburg, IL 60196

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Base Radio Controllers EBTS System Manual - Vol 2

Enhanced Base Radio Controller

Enhanced Base Radio Controller Overview

Generation 2 BR/EBRC Compatibility

Table 2 EBRC Compatibility

Module Software Revision Compatible

Exciter R01.00.xx- R01.03.xx No

Exciter R01.04.xx and higher Yes

System Software SR 9.15 or higher Yes

System Software Lower than SR 9.25 No

Single Receiver all versions No

3X Receiver all versions Yes

40W Power Ampliﬁer all versions Yes

70W Power Ampliﬁer all versions Yes

The Enhanced Base Radio Controller (EBRC) serves as the main controller for the Base Radio. The EBRC provides signal processing and operational control for other Base Radio modules. Figure 1 shows a top view of the EBRC with the cover removed. The EBRC module consists of two printed circuit boards (EBRC board and LED/display board), a slide-in housing, and associated hardware.

❐ The EBRC is only compatible with System Software Release SR 9.15 or

newer. Any system running an older (i.e. lower revision number) must be updated to at least SR 9.15 prior to installation.

❐ The EBRC is compatible with Legacy Base Radios that support 3X receiver

module assemblies.

❐ The EBRC is not compatible with Legacy Base Radios that support single

receiver module assemblies.

❐ The Generation 2 Base Radio is compatible with all versions of power

supplies.

❐ The Generation 2 Base Radio is compatible with all 800 MHz 70W and 40W

Power Ampliﬁers.

❐ The EBRC is only compatible with Legacy Exciter (with ﬁrmware Level

R1.04.xx and higher) or the Low Noise Exciter.

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EBTS System Manual - Vol 2 Base Radio Controllers

Enhanced Base Radio Controller

Determining FRU and Kit Revisions

For Generation 2 BR/EBRC

These commands will return all available FRU and Kit Revision numbers. Use these to determine installation requirements:

1. Connect one end of the RS-232 cable to the service computer.

2. Connect the other end of the RS-232 cable to the Service Access port, located

on the front panel of the EBRC module.

3. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the Control Module front panel. At the prompt, hit a Carriage Return on the service computer to enter the test application mode. Using the password motorola, log in to the BR.

:> login -uﬁeld password: motorola

ﬁeld>

4. Collect revision numbers from the station by typing the

following command:

ﬁeld> fv -oplatform ﬁeld>

5. If all modules return revision numbers of the format “Rxx.xx.xx”, then all

For Legacy Single Channel BR/BRC

1. Connect one end of the RS-232 cable to the service computer.

2. Connect the other end of the RS-232 cable to the STATUS port, located on the

front panel of the BRC.

3. Using the ﬁeld password, login to the BR.

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Base Radio Controllers EBTS System Manual - Vol 2

Enhanced Base Radio Controller

4. Collect revision numbers from the station by typing the

following commands:

BRC>dekey BRC>test_mode BRC>get brc_rev_no BRC>get rx1_rev_no BRC>get rx2_rev_no BRC>get rx3_rev_no BRC>get pa_rev_no BRC>get ex_rev_no

BRC>

5. If all modules return revision numbers of the format “Rxx.xx.xx”, then all

revision numbers are present and no further action is required. Log out and repeat steps 1 through 4 for each additional BR.

If revision numbers were returned as blank or not in the format “Rxx.xx.xx”, contact your local Motorola representative or Technical Support.

(if BR is 3 branch)

EBRC Description

The EBRC memory contains the operating software and codeplug. The software deﬁnes BR operating parameters, such as output power and operating frequency.

The EBRC connects to the Base Radio backplane with one 96-pin Euro connector and one blindmate RF connector. Two Torx screws secure the EBRC in the Base Radio chassis.

Figure 1 shows a top view of the EBRC (model CLN1653) with the cover removed. The EBRC module contains the main board, CLN7428 and LED board, CLN7208.

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EBTS System Manual - Vol 2 Base Radio Controllers

Enhanced Base Radio Controller

Figure 1 Enhanced Base Radio Controller, version CLN1653 (with cover removed)

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Base Radio Controllers EBTS System Manual - Vol 2

Enhanced Base Radio Controller

Enhanced Base Radio Controller Controls and Indicators

The EBRC monitors the functions of other Base Radio modules. The LEDs on the front panel indicate the status of EBRC-monitored modules. The CTL LED on the front panel light momentarily on initial BR power-up and on BR resets. Figure 2 shows the front panel of the EBRC.

SERVICE ACCESS

Figure 2 EBRC (Front View)

ENHANCED CONTROL

RESETBR PS EX PA CTL R1 R2 R3

EBTS316g 06701SJW

Indicators

Table 3 lists and describes the EBRC LEDs.

Table 3 EBRC Indicators

LED Color Module

Monitored

BR Green BR Solid (on) Station is keyed

PS Red Power

Supply

EX Red Exciter Solid (on) FRU failure indication - Exciter has a

PA Red Power

Ampliﬁer

Condition Indications

Flashing (on) Station is not keyed

Off Station is out of service or power is

removed

Solid (on) FRU failure indication - Power Supply

has a major alarm and is out of service

Flashing (on) Power Supply has a minor alarm and

may be operating at reduced performance

Off Power Supply under normal operation

(no alarms)

major alarm and is out of service

Flashing (on) Exciter has a minor alarm and may be

operating at reduced performance

Off Exciter under normal operation

(no alarms)

Solid (on) FRU failure indication - PA has a major

alarm and is out of service

Flashing (on) PA has a minor alarm and may be

operating at reduced performance

Off PA under normal operation (no

alarms)

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EBTS System Manual - Vol 2 Base Radio Controllers

Enhanced Base Radio Controller

Table 3

EBRC Indicators (Continued)

LED Color Module

Monitored

CTL Red Controller Solid (on) FRU failure indication - BRC has a

Red Receiver #1,

#2, or #3

Condition Indications

major alarm and is out of service.

NOTE:

Flashing (on) BRC has a minor alarm and may be

operating at reduced performance

Off BRC under normal operation (no

alarms)

Solid (on) FRU failure indication - Receiver (#1,

#2, or #3) has a major alarm and is out of service

Flashing (on) Receiver (#1, #2, or #3) has a minor

alarm and may be operating at reduced performance

Off Receiver (#1, #2, or #3) under normal

operation (no alarms)

Controls

Table 4 lists the controls and descriptions.

Table 4

EBRC Controls

Control Description

RESET Switch A push-button switch used to manually reset the BR.

STATUS connector

A 9-pin connector used for connection of a service computer, providing a convenient means for testing and conﬁguring.

STATUS Connector

Table 5 the pin-outs for the STATUS connector.

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Base Radio Controllers EBTS System Manual - Vol 2

Enhanced Base Radio Controller

Table 5 Pin-outs for the STATUS Connector

Pin-out Signal

1 not used

2 TXD

3 RXD

4 not used

5 GND

6 not used

7 not used

8 not used

9 not used

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EBTS System Manual - Vol 2 Base Radio Controllers

Enhanced Base Radio Controller

Enhanced Base Radio Controllers Theory of Operation

Table 6 brieﬂy describes the EBRC circuitry. Figure 15 is a functional block diagram of the EBRC.

Table 6 EBRC Circuitry

Circuit Description

Host Microprocessor Contains integrated circuits that comprise the central controller

of the EBRC and station

Non-Volatile Memory Consists of:

• FLASH containing the station operating software

• EEPROM containing the station codeplug data

Volatile Memory Contains SDRAM to store station software used to execute

commands.

Ethernet Interface Provides the EBRC with a 10Base2 Ethernet communication

port to network both control and compressed voice data

RS-232 Interface Provides the EBRC with an RS-232 serial interface

Digital Signal Processors Performs high-speed modulation/demodulation of

compressed audio and signaling data

TISIC Contains integrated circuits that provide timing reference

signals for the station

TX Reclock Contains integrated circuits that provide highly stable,

reclocked transmit signals and peripheral transmit logic

Station Reference Circuitry Generates the 16.8 MHz and 48 MHz reference signals used

throughout the station

Input Ports Contains 16 signal input ports that receive miscellaneous

inputs from the BR

Output Ports Contains 40 signal output ports, providing a path for sending

miscellaneous control signals to circuits throughout the BR

Remote Station Shutdown Provides software control to cycle power on the BR

MPC860 Host Microprocessor

The MPC860 host microprocessor is the main controller for the BR. The processor operates at a 50-MHz clock speed. The processor controls Base Radio operation according to station software in memory. Station software resides in FLASH memory. For normal operation, the system transfers this software to non-volatile memory. An EEPROM contains the station codeplug.

NOTE

At BR power-up, the EBRC LED indicates a major alarm. This indication continues until BR software achieves a predetermined state of operation. Afterward, the software turns off the EXBRC LED.

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Enhanced Base Radio Controller

Serial Communication Buses

The microprocessor provides a general-purpose SMC serial management controller bus.

The SMC serial communications bus is an asynchronous RS-232 interface with no hardware handshake capability. The BRC front panel includes a nine-pin, D-type connector. This connector provides a port where service personnel may connect a service computer. Service personnel can perform programming and maintenance tasks via Man-Machine Interface (MMI) commands. The interface between the SMC port and the front- panel STATUS connector is via EIA-232 Bus Receivers and Drivers.

Host Processor

The microprocessor incorporates 4k bytes of instruction cache and 4k bytes of data cache that signiﬁcantly enhance processor performance.

The microprocessor has a 32-line address bus. The processor uses this bus to access non-volatile memory and SDRAM memory. Via memory mapping, the processor also uses this bus to control other BRC circuitry.

The microprocessor uses its Chip Select capability to decode addresses and assert an output signal. The eight chip-select signals select non-volatile memory, SDRAM memory, input ports, output ports, and DSPs.

The Host processor...

❐ Provides serial communications between the Host Microprocessor and other

Base Radio modules.

❐ Provides condition signals necessary to access SDRAM.

❐ Accepts interrupt signals from EBRC circuits (such as DSPs).

❐ Organizes the interrupts, based on hardware-deﬁned priority ranking.

❐ The Host supports several internal interrupts from its Communications

Processor Module. These interrupts allow efﬁcient use of peripheral interfaces.

❐ The Host supports 10 Mbps Ethernet/IEEE 802.3.

❐ Provides a 32-line data bus transfers data to and from EBRC SDRAM and

other BRC circuitry. Buffers on this data bus allow transfers to and from non-volatile memory, general input and output ports and DSPs.

Non-Volatile Memory

Base Radio software resides in 2M x 32 bits of FLASH memory. The Host Microprocessor addresses the FLASH memory with 20 of the host address bus’ 32 lines. The host accesses FLASH data over the 32-line host data bus. A host-operated chip-select line provides control signals for these transactions.

The FLASH contains the operating system and application code. The system stores application code in FLASH for fast recovery from reset conditions. Application code transfers from network or site controllers may occur in a

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Enhanced Base Radio Controller

background mode. Background mode transfers allow the station to remain operational during new code upgrades.

The data that determines the station personality resides in a 32K x eight bit codeplug EEPROM. The microprocessor addresses the EEPROM with 15 of the host address bus’ 32 lines. The host accesses EEPROM data with eight of the data bus’ 32 lines. A host-operated chip-select line provides control signals for these transactions.

During the manufacturing process, the factory programs the codeplug’s default data. The BRC must download ﬁeld programming data from network and site controllers. This data includes operating frequencies and output power level. The station permits adjustment of many station parameters, but the station does not store these adjustments. Refer to the Software Commands chapter for additional information.

Volatile Memory

Each BRC contains 8MB x 32 bits of SDRAM. The BRC downloads station software code into SDRAM for station use. SDRAM also provides short-term storage for data generated and required during normal operation. SDRAM is volatile memory. A loss of power or system reset destroys SDRAM data.

The system performs read and write operations over the Host Address and Data buses. These operations involve column and row select lines under control of the Host processor’s DRAM controller. The Host address bus and column row signals sequentially refresh SDRAM memory locations.

Ethernet Interface

The Host processor’s Communications Processor Module (CPM) provides the Local Area Network (LAN) Controller for the Ethernet Interface. The LAN function implements the CSMA/CD access method, which supports the IEEE

802.3 10Base2 standard.

The LAN coprocessor supports all IEEE 802.3 Medium Access Control, including the following:

❐ framing

❐ preamble generation

❐ stripping

❐ source address generation

❐ destination address checking

The PCM LAN receives commands from the CPU.

The Ethernet Serial Interface works directly with the CPM LAN to perform the following major functions:

❐ 10 MHz transmit clock generation (obtained by dividing the 20 MHz signal

provided by on-board crystal)

❐ Manchester encoding/decoding of frames

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❐ electrical interface to the Ethernet transceiver

An isolation transformer provides high-voltage protection. The transformer also isolates the Ethernet Serial Interface (ESI) and the transceiver. The pulse transformer has the following characteristics:

❐ Minimum inductance of 75 µH

❐ 2000 V isolation between primary and secondary windings

❐ 1:1 Pulse Transformer

The Coaxial Transceiver Interface (CTI) is a coaxial cable line driver and receiver for the Ethernet. CTI provides a 10Base2 connection via a coaxial connector on the board. This device minimizes the number of external components necessary for Ethernet operations.

A DC/DC converter provides a constant voltage of -9 Vdc for the CTI from a

3.3 Vdc source.

The CTI performs the following functions:

❐ Receives and transmits data to the Ethernet coaxial connection

❐ Reports any collision that it detects on the coaxial connection

❐ Disables the transmitter when packets are longer than the legal length

(Jabber Timer)

Digital Signal Processors

The BRC includes two Receive Digital Signal Processors (RXDSPs) and a Transmit Digital Signal Processor (TXDSP). These DSPs and related circuitry process compressed station transmit and receive audio or data. The related circuitry includes the TDMA Infrastructure Support IC (TISIC) and the TISIC Interface Circuitry. The DSPs only accept input and output signals in digitized form.

The RXDSP inputs are digitized receiver signals. The TXDSP outputs are digitized voice audio and data (modulation signals). These signals pass from the DSP to the Exciter portion of the EXBRC. DSPs communicate with the Microprocessor via an eight-bit, host data bus on the host processor side. For all DSPs, interrupts drive communication with the host.

The RXDSP operates from an external 16.8 MHz clock, provided by the local station reference. The RXDSP internal operating clock signal is 150MHz, produced by an internal Phase-Locked Loop (PLL).

The RXDSP accepts digitized signals from the TISIC device through the RxDSP parallel bus. The RXDSP supports a single carrier (single 3 branch receiver) digital data input.

The RXDSP accesses its DSP program and signal-processing algorithms in 128k words of internal memory. The RXDSP communicates with the host bus on an 8-bit interface.

Additionally, a serial control path connects the two RXDSPs and the TXDSP. The Synchronous Communications Interface (SCI) port facilitates this serial control path.

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For initialization and control purposes, the RXDSP connects to the TISIC device.

The TXDSP operates at an external clock speed of 16.8 MHz, provided by the EBRC local station reference. The TXDSP internal operating clock is 150MHz, produced by an internal Phase Lock Loop (PLL).

The TXDSP sends one carrier of digitized signal to the TISIC to reformat the date before sending it to the exciter. The exciter converts the digital signal to analog.

The TXDSP contains its own, internal address and data memory. The TXDSP can store 128k words of DSP program and data memory. An eight-bit interface handles TXDSP-to-host bus communications.

TISIC

The TISIC controls internal DSP operations. This circuit provides the following functions:

❐ For initialization and control, interfaces with the RXDSP via the DSP

address and data buses.

❐ Accepts a 16.8 MHz signal from Station Reference Circuitry.

❐ Accepts a 5 MHz signal, modulated with one pulse per second (1 PPS) from

the site reference.

❐ Demodulates the 1 PPS from the modulated 5 MHz signal

❐ Outputs a 1 PPS signal and a windowed version of this signal for network

timing alignment.

❐ Outputs a 2.1 MHz reference signal used by the Exciter and Receiver(s).

❐ Generates 15 ms and 7.5 ms ticks. (These ticks synchronize to the 1 PPS time

mark. The system decodes the time mark from the site reference. Then the system routes the reference to the TXDSP and RXDSP.)

❐ Provides a 4.8 MHz reference signal. This signal is used by the Exciter to

clock data into the TRANLIN

❐ Accepts differential data from the Receiver(s) (Rx through Rx3) via the

interface circuitry.

❐ Transmits serial control data to the Receiver(s) (Rx through Rx3) via the

serial data bus.

❐ Accepts and formats differential data from the TXDSP for transmission to

the Exciter via interface circuitry.

❐ Generates the Receiver SSI (RxSSI) frame sync interrupt for the RxDSP.

Station Reference Circuitry

The Station Reference Circuitry is a phase-locked loop (PLL). This PLL consists of a high-stability, Voltage-Controlled, Crystal Oscillator (VCXO) and a PLL IC. GPS output from the iSC connects to the 5 MHz/1 PPS BNC connector on the BR backplane. Wiring at this connector routes signals to EXBRC station reference circuitry.

The PLL compares the 5 MHz reference frequency to the 16.8 MHz VCXO output. Then the PLL generates a DC correction voltage. The PLL applies this correction

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voltage to the VCO through an analog gate. The analog gate closes when three conditions coexist: (1) The 5 MHz tests stable. (2) The PLL IC is programmed. (3) Two PLL oscillator and reference signal output alignments occur.

A loss in the 5MHz / 1PPS signal causes the control voltage enable switch to open. This complex PLL control allows the BR to maintain 16.5 MHz capability during short disconnects (of approximately one minute) of the 5 MHz / 1 PPS signal. (For example, during 5 MHz / 1 PPS cable maintenance work.)

When the gate enables, the control voltage from the PLL can adjust the high-stability VCXO frequency. The adjustment can achieve a stability nearly equivalent to that of the external, 5 MHz frequency reference.

The correction voltage from the PLL continuously adjusts the VXCO frequency. The VXCO outputs a 16.8 MHz clock signal. The circuit applies this clock signal to the receiver, and TISIC.

The TISIC divides the 16.8 MHz signal by seven, and outputs a 2.1 MHz signal. This output signal then becomes the 2.1 MHz reference for the Exciter and Receiver(s).

Input Ports

One general-purpose input register provides for EBRC and station circuit input signals. The register has 16 input ports. The Host Data Bus conveys input register data to the Host Microprocessor. Typical inputs include 16.8 Station Reference Circuitry status outputs and reset status outputs.

Output Ports

Two general-purpose output registers distribute control signals from the Host Microprocessor to the BRC and station circuitry. One register has 32 output ports and the other register has 8 output ports. Control signal distribution occurs over the backplane. The Host Data Bus drives the output ports’ latched outputs. Typical control signals include front-panel LED signals and SPI peripheral enable and address lines.

Remote Station Shutdown

The EBRC contains power supply shutdown circuitry. This circuitry can send a shutdown pulse to the Base Radio Power Supply. BRC software generates the shutdown control pulse.

After receiving a shutdown pulse, the power supply turns off BR power. Shut down power sources include 3.3, 5.1, 28.6 and 14.2 Vdc sources throughout the BR. Due to charges retained by BR storage elements, power supply voltages may not reach zero. The shutdown only assures that the host processor enters a power-on-reset state.

A remote site uses the shutdown function to perform a hard reset of all BR modules.

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800/900/1500 MHz Base Radios EBTS System Manual - Vol 2

Base Radio Controller

Enhanced Base Radio Controller

Functional Block Diagram

Model CLN1653A

LED CONTROL LINES

HOST LATCH P0 OUT

BASE

RADIO

POWER SUPPLY

EXCITER

PA CTL RX1 RX2 R3

5MHZ_1PPS BASE RADIO INPUT

5MHZ 1PPS

FRONT PANEL LEDS

G A T I N G

STATION REFERENCE CIRCUITRY

SYNTHESIZER IC / CIRCUITRY

SPI BUS

PHASE DETECTION/ FILTERING/ CONTROL

DISCONNECT/ CONNECT CONTROL

STEARING LINE

HIGH STABILITY VCXO

16.8 MHZ

28V

P0_OUT

REMOTE STATION SHUTDOWN CIRCUITRY

SHUTDOWN CIRCUITRY

SHUTDOWN (TO POWER SUPPLY)

Figure 15 Enhanced Base Radio Controller Functional Block Diagram

(Sheet 1 of 2)

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Base Radio Controller

EnhancedBase Radio Controller

Functional Block Diagram Model CLN1653A

EIA-232 BUS RECEIVERS/ DRIVERS

ISOLATION

BUFFER

DRAM MEMORY

SDRAM 4M x 16

ETHERNET INTERFACE

D[0:15]

HOST

MICRO-

PROCESSOR

SERIAL MANAGEMENT CONTROLLER (SMC2)

SCC1 ETHERNET SERIAL INTERFACE

ETHERNET

SERIAL

CS2

CS3

INTERFACE

SERIAL PERIPHERAL INTERFACE

HOST ADDRESS BUS

GPLA0, A[8,9,17,18,20:29],RAS,CAS,WE

SDRAM

CLSN

RCV RX

TRMT TX

D[0:15]

4M x 16

TRANSFORMER

TRANSCEIVER

A[0:7]

STATUS PORT (9 PIN D CONNECTOR ON BRC FRONT PANEL)

SPI BUS

A[10:31]

EXTENDED HOST

BUS BUFFERS

BUFFER

RX1 SERIAL DATA

DATA CLOCK 1

RX2 SERIAL DATA

DATA CLOCK 2

RX3 SERIAL DATA

DATA CLOCK 3

10BASE2 COAX

SPI BUS TO/FROM STATION MODULES

MA[21:0]

16.8MHZ

DSP_A[31:24]

DIFFERENTIAL TO SINGLE END

RECEIVE DIGITAL SIGNAL PROCESSOR (RX DSP 1)

1 PPS TIMING, CONTROL/ SLOT TIMING/RESET

DIGITAL SIGNAL PROCESSING

CIRCUITRY

HOST-DSP BUFFERED ADDRESS BUS

HOST-DSP BUFFERED DATA BUS

FRONT PANEL

RESET

5MHZ 1PPS

D[0, 23]

A[0:5]

NETWORKED

SCI

D[0, 8:23]

TISIC

AGC

BUFFER/ SPLITTER

SERIAL CONTROL DATA TO RECEIVER 1

SERIAL CONTROL DATA TO RECEIVER 2

SERIAL CONTROL DATA TO RECEIVER 3

AGC TO

ALL RECEIVERS

2.1 MHz TO EXCITER AND RECEIVERS

50 MHZ CLOCK

P0_IN

STATUS BUS

STATION MODULES

FROM

SDRAM 4M x 16

MA[2:21]

FLASH 1M x 16

D[16:31]

MD[16:31]

MD[0:15]

D[0:31]

D[0:7]

MA[0:14]

EEPROM 32k x 8

MD[24:31]

BUFFER

D[0:31]

CS4

CS0 CS1

SDRAM 4M x 16

D[16:31]

HOST DATA BUS

HOST BUFFERED ADDRESS BUS

MA[2:21]

FLASH

MD[0:15]

1M x 16

FLASH 1M x 16

MD[16:31]

NON-VOLATILE MEMORY

Figure 16 Enhanced Base Radio Controller Functional Block Diagram

(Sheet 2 of 2)

MD[31:0]

DSP_D[31:24]

HOST BUFFERED DATA BUS

MD[0:32]

P0_IN BUFFER

MD[16,17,20-24,28-31]

EXPANDED STATUS INPUT

AND OUTPUT CONTROL CIRCUITRY

MD[24:31]

P0_OUT LATCH

P1_OUT LATCH

TRANSMIT DIGITAL SIGNAL PROCESSOR (TX DSP)

TRANSMIT SERIAL DATA

BUS

SINGLE END TO DIFFERENTIAL

SERIAL DATA AND CLOCK TO EXCITER

P0_OUT/P1_OUT CONTROL BUS

TO STATION MODULES

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EBTS System Manual - Vol 2 Base Radio Exciter

Base Radio Exciter

Overview

This chapter provides technical information for the Exciter (EX).

Section Page Description

800 Legacy MHz Exciter – TLN3337; 900 MHz Exciter – CLN1357; 1500 MHz Exciter – TLN3428

Low Noise 800 MHz Exciter 7 Describes the functions and characteristics of the

QUAD Channel 900 MHz Exciter

QUAD Channel 800 MHz Exciter

2 Describes the functions and characteristics of the

Exciter module for the single channel Base Radio (BR).

Exciter module for the Low Noise Exciter for the Generation 2 Base Radio (Gen2 BR).

11 Describes the functions and characters of the 900

MHz QUAD Channel Base Radio (BR)

15 Describes the functions and characteristics of the

Exciter module for the 800 MHz QUAD channel Base Radio (BR).

FRU Number to Kit Number Cross Reference

Exciter Field Replaceable Units (FRUs) are available for the iDEN EBTS. The FRU contains the Exciter kit and required packaging. Table 1 provides a cross reference between Exciter FRU numbers and kit numbers.

Table 1

FRU Number to Kit Number Cross Reference

Description FRU Number Kit Number

Single Channel Exciter (800 MHz) TLN3337 CLF1490

Single Channel Exciter (900 MHz) CLN1357 CLF1500

Single Channel Exciter (1500 MHz) TLN3428 CTX1120

QUAD Channel 900 MHz Exciter/ Base Radio Controller)

QUAD Channel 800 MHz Exciter/ Base Radio Controller

LNODCT (Low Noise Offset Direct Conversion Transmit) Exciter (800 MHz)

CLN1497 CLF6452

CLN1497 CLF1560

TLN3337 CLF1789

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EBTS System Manual - Vol 2 Base Radio Exciter

Low Noise 800 MHz Exciter

LNODCT (Low Noise Offset Direct Conversion Transmit) 800 MHz Exciter Overview

The Low Noise Exciter and the Power Ampliﬁer (PA) provide the transmitter functions of the Generation 2 Base Radio. The Low Noise Exciter module consists of a printed circuit board, a slide in housing, and associated hardware.

The Low Noise Exciter connects to the Base Radio backplane through a 96-pin DIN connector and two blindmate RF connectors. Two Torx screws on the front of the Exciter secure it to the chassis.

There are no controls or indicators on the Exciter. Speciﬁcations of the transmitter circuitry, including the Exciter and PAs, are provided in the Base Radio section of the manual.

Figure 3 shows the Exciter with the cover removed.

Figure 3 Low Noise 800 MHz Exciter (with cover removed)

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Low Noise 800 MHz Exciter

Low Noise Exciter Theory of Operation

Table 3 describes the basic circuitry of the Low Noise Exciter. Figures 9 show the Low Noise Exciter’s functional block diagram.

Table 3 Exciter Circuitry

Circuit Description

Low Noise IC • Up-converts baseband data to the transmit frequency

• Down-converts the PA feedback signal to baseband

• Uses a baseband Cartesian feedback loop system, necessary to obtain linearity from the transmitter and avoid splattering power into adjacent channels

• Performs training functions for proper linearization of the transmitter

Memory & A/D Converter Serves as the main interface between the synthesizer, Tranlin

Frequency Synthesizer Circuitry

970 MHz VCO (800 MHz BR) Provides a LO signal to the Low Noise IC, for up-conversion

IC, A/D, and EEPROM on the Exciter, and the BRC via the SPI bus

• Consists of a phase-locked loop and VCO

• Provides a LO signal to the Low Noise IC for the second up-conversion and ﬁrst down-conversion of the feedback signal from the PA

to the transmit frequency

90.3 MHz VCO (800 MHz BR) Provides a LO signal to Low Noise IC, for the up-conversion

Regulator Circuitry Provides a regulated voltage to various ICs and RF devices

Linear RF ampliﬁer Stages Ampliﬁes the RF signal from the Exciter IC to an appropriate

and for the down-conversion of the feedback signal.

The mixed output becomes the LO signal for Transmit signal up- and down- conversion

located on the Exciter

level for input to the PA

Memory Circuitry

The memory circuitry is loaded on an EEPROM on the Exciter. The EBRC performs memory read and write operations via the SPI bus. Information stored in this memory device includes the kit number, revision number, module-speciﬁc scaling, and correction factors, operations, parameters, and free-form information (scratch pad) kit number

A/D Converter Circuitry

Analog signals from various areas throughout the Exciter board enter the A/D converter (A/DC). The A/DC converts these analog signals to digital form. Upon request of the BRC, A/DC output signals enter the BRC via SPI lines. The Controller periodically monitors all signals.

Some of the monitored signals include ampliﬁer bias and synthesizer signals.

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EBTS System Manual - Vol 2 Base Radio Exciter

Low Noise 800 MHz Exciter

LNODCT IC Circuitry

The LNODCT IC (Low Noise Offset Direct Conversion Transmit IC) is a main interface between the Exciter and BRC. The BRC’s Digital Signal Processor (DSP) sends digitized signals (baseband data) to the Exciter over the DSP data bus.

The differential data clock signal serves as a 2.4 MHz reference signal to the LNODCT IC’s internal synthesizer. The LNODCT compares the reference signal with the outputs of Voltage Controlled Oscillators (VCOs). The LNODCT might sense that a VCO’s output is out of phase or off-frequency. If so, then the LNODCT sends correction pulses to the VCO. The pulses adjust VCO output, thereby matching phase and frequency with the reference.

The LNODCT IC up-converts baseband data from the EBRC to the transmit frequency. The LNODCT IC also down-converts the Transmit signal from the Power Ampliﬁer to baseband data for cartesian feedback linearization.

The EBRC uses the Serial Peripheral Interface (SPI) bus to communicate with the LNODCT IC. The SPI bus serves as a general purpose, bi-directional, serial link between the EBRC and other Base Radio modules, including the Exciter. The SPI carries control and operational data signals to and from Exciter circuits.

Synthesizer Circuitry

The synthesizer circuit consists of the Phase-Locked Loop (PLL) IC and associated circuitry. This circuit’s controls the 970 MHz VCO signal. An internal phase detector generates a logic pulse. This pulse is proportional to the phase or frequency difference between the reference frequency and loop pulse signal.

The charge pump circuit generates a correction signal. The correction signal moves up or down in response to phase detector output pulses. The correction signal passes through the low-pass loop ﬁlter. The signal then enters the 970 MHz Voltage Controlled Oscillator (VCO) circuit.

970 MHz Voltage Controlled Oscillator (VCO)

For proper operation, the VCO requires a very low-noise, DC supply voltage. An ultra low-pass ﬁlter prepares the necessary low-noise voltage and drives the oscillator.

A portion of the oscillator output signal enters the synthesizer circuitry. The circuitry uses this feedback signal to generate correction pulses.

The 970 MHz VCO output mixes with the 90.3 MHz VCO output. The result is a Local Oscillator [LO) signal for the LNODCT IC. The LNODCT uses this LO signal to up-convert the programmed transmit frequency. The LNODCT also uses the LO signal to down-convert the PA feedback signal.

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Base Radio Exciter EBTS System Manual - Vol 2

Low Noise 800 MHz Exciter

90.3 MHz Voltage Controlled Oscillator (VCO)

The synthesizer within the LNODCT IC sets the 90.3 MHz signal. The 90.3 MHz VCO provides a LO signal to the LNODCT IC. The LNODCT uses this signal in up-converting and down-converting the feedback signal.

Regulator Circuitry

The voltage regulators generate three regulated voltages: +3 Vdc, +5 Vdc and +11.7 Vdc. The regulators obtain input voltages from the +3.3 Vdc and +14.2 Vdc backplane voltages. The regulated voltages power various ICs and RF devices in the Exciter.

Linear RF Ampliﬁer Stages

The linear RF ampliﬁers boost the RF signal from the LNODCT IC. The RF Ampliﬁer generates an appropriate signal level to drive the PA.

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EBTS System Manual - Vol 2 800/900/1500 MHz Base Radios

Exciter

RF FEEDBACK

FROM PA MODULE

DIFFERENTIAL DATA & CLOCK

FROM

BRC MODULE

ADDRESS BUS

FROM CONTROL

MODULE

SPI BUS

TO/FROM CONTROL

MODULE

LNODCT IC CIRCUITRY

PLD

90.3

VCO

CIRCUITRY

OSCILLATOR

BUFFER

AMP

ADDRESS DECODE, MEMORY, & A/D

CONVERTER CIRCUITRY

VARIOUS SIGNALS

TO MONITOR

DAC

MEMORY

A/D

CONVERTER

EXCITER IC CIRCUITRY

REGULATOR

CIRCUITRY

+14.2 V

FROM

BACKPLANE

+11.7 V

REGULATOR

LNODCT IC

LO INJECTION CIRCUITRY

+5.0 V FROM BACKPLANE

+3 V

REGULATOR

(U3702)

+5 V

REGULATOR

+3 V

SOURCE

+11.7 V

SOURCE

+5 V

SOURCE

970 MHZ

VCO CIRCUITRY

BUFFER

SYNTHESIZER

CIRCUITRY

2.4 MHZ

BUFFER

AMP

CHIP

SELECT

PHASE

LOCKED

LOOP

OSCILLATOR

FEEDBACK

+10 V

FILTER

CONTROL VOL TAGE

VCO FEEDBACK

SPI BUS (CLOCK & DATA)

FROM BACKPLANE

CHARGE

PUMP

VCO

LOW-PASS

LOOP

FILTER

LINEAR RF AMPLIFIER

CIRCUITRY

RF OUTPUT

TO PA MODULE

NOTE: Where two frequencies are given, frequency without parentheses applies to 800 MHz BR only and frequency with parentheses applies to 900 MHz BR only.

Figure 8 Low Noise Exciter Functional Block Diagram

BPF

EBTS283LN 080601JNM

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EBTS System Manual - Vol 2 Power Amplifier (PA)

Power Ampliﬁer (PA)

Overview

This section provides technical information for the Power Ampliﬁer (PA).

Section Page Description

Power Amplifer Overview 1 Describes the the various Base Radio Power

PA Theory of Operation 7 Describes the various modules and functions for

TLF2020 (CLF1772) 40W800 MHz PA Functional Block Diagram (Sheet 1 of 1)

TLN3335 (CLF11771) 70W800 MHz PA Functional Block Diagram (Sheet 1 of 1)

60W- 900 MHz PA Functional Block Diagram (Sheet 1 of 1)

PA Functional Block Diagram

800 and 900 MHz QUAD Channel BR PA Functional Block Diagram

17 Functional Block Diagram for the 40 Watt, 800

18 Functional Block Diagram for the 70 Watt, 800

19 Functional Block Diagram for the 60 Watt, 900

20 Functional Block Diagram for the 40 Watt, 1500

21 Functional Block Diagram for the 800 MHz QUAD

Ampliﬁer (PAs) for the single channel and QUAD Channel Base Radios (BR)s.

the various single channel and QUAD Channel Base Radios (BRs)

MHz, Single Channel Base Radio Power Ampliﬁer (PA)

Channel Base Radio Power Ampliﬁer (PA)

FRU Number to Kit Number Cross Reference

Power Ampliﬁer (PA) Field Replaceable Units (FRUs) are available for the iDEN EBTS. The FRU contains the PA kit and required packaging. Table 1 provides a cross reference between PA FRU numbers and kit numbers.

Table 1

68P80801E35-A 9/1/2001 1

FRU Number to Kit Number Cross Reference

Description FRU Number Kit Number

40 W- 800 MHz Single Channel Base Radio PA TLF2020 CLF1772

70 W- 800 MHz Single Channel Base Radio PA TLN3335 CLF1771

60 W- 900 MHz Single Channel Base Radio PA CLN1355 CLF1300

40 W- 1500 MHz Single Channel Base Radio PA TLN3426 TTG1000

52 W- 900 MHz QUAD Channel Base Radio PA DLN1202 CTH1082

52 W- 800 MHz QUAD Channel Base Radio PA CLF1499 CLF1400

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Power Amplifier (PA) EBTS System Manual - Vol 2

Power Amplifer Overview

NOTE

The power outputs discussed on this section for the 800 MHz QUAD and 900 MHz QUAD Power Ampliﬁers are referenced to the single carrier mode, operating at 52 W average power output from the Power Ampliﬁer’s output connector.

The Power Ampliﬁer (PA), with the Exciter, provides the transmitter functions for the Base Radio. The PA accepts the low-level modulated RF signal from the Exciter. The PA then ampliﬁes the signal for transmission and distributes the signal through the RF output connector.

The 800 MHz Base Radio can be equipped with either 40 Watt PA, TLF2020 (version CLF1771) or 70 Watt PA, TLN3335 (version CLF1772). The 40W PA module consists of ﬁve hybrid modules, four pc boards, and a module heatsink/ housing assembly. The 70W PA module consists of eight hybrid modules, four pc boards, and a module heatsink/housing assembly.

The 900 MHz Base Radio is equipped with 60 Watt PA, CLN1355 (kit no. CLF1300A). The PA module consists of four hybrid modules, two pc boards, and a module heatsink/housing assembly.

The 1500 MHz Base Radio is equipped with 40 Watt PA, TLN3426 (version TTG1000). The PA module consists of four hybrid modules, two pc boards, and the module heatsink/housing assembly.

The PA connects to the chassis backplane through a 96-pin DIN connector and three blindmate RF connectors. Two Torx screws located on the front of the PA hold it in the chassis.

Speciﬁcations of the transmitter circuitry, including the Exciter and PAs, are provided in Base Radio Overview section. Figure 1 shows the 70W, 800 MHz PA. Figure 2 shows the 60W, 900 MHz PA. Figure 3 shows the 40W, 1500 MHz PA. Figure 4 shows the 800 MHz QUAD PA (the 900 MHz QUAD PA is similar in appearance)

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EBTS System Manual - Vol 2 Power Amplifier (PA)

Power Amplifer Overview

NOTE: 70W PA shown. 40W PA is similar.

Figure 1 70W- 800 MHz PA – TLN3335 (cover removed)

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EBTS System Manual - Vol 2 Power Amplifier (PA)

PA Theory of Operation

Table 2 describes the basic functions of the PA circuitry. Figures 5 and 6 show the functional block diagrams of 40W, 800 MHz and 70W, 800 MHz PA, respectively. Figure 7 shows the functional block diagram of the 60W, 900 MHz PA. Figure 8 shows a functional block diagram of the 40W, 1500 MHz PA. Figure 9 shows a functional block diagram of 800 MHz and 900 MHz QUAD PA.

Table 2 Power Ampliﬁer Circuitry

Circuit Description

DC/Metering Board • Serves as the main interface between the PA and the backplane board

• Accepts RF input from the Exciter via a blindmate RF connector

• Routes the RF input via a 50 Ω stripline to the Linear Driver Module RF ampliﬁer

• Routes the RF feedback from the RF Combiner/Peripheral Module to the Exciter via a blindmate RF connector

• Provides digital alarm and metering information of the PA to the BRC via the SPI bus

• Routes DC power to the fans and PA

• contains the thermistor that senses the PA temperature (800 MHz QUAD and 900 MHz QUAD)

Linear Driver Module (LDM)

Interconnect Board (70W-800 MHz, 40W-800 MHz, 800 QUAD, and 900 MHz QUAD

NOTE: * The power outputs described in this section for the 800 QUAD and 900 QUAD P As are references to the single carrier mode operating at 52W average power out from the PA output connector.

• Contains two Class AB stages with the ﬁnal stage in a parallel conﬁguration (70W-800 MHz, 40W-800 MHz, 800 MHz QUAD)

• Contains three cascaded Class AB stages with the ﬁrst two stages conﬁgured as distributed ampliﬁers and the ﬁnal stage in parallel conﬁguration (900 MHz QUAD)

• Contains three cascaded Class AB stages with the ﬁnal stage in push-pull conﬁguration (900 MHz)

• Contains four cascaded Class AB stages with the ﬁnal stage in a push-pull conﬁguration (1500 MHz)

• Ampliﬁes the low-level RF signal ~25 mW average power from the Exciter via the DC/Metering Board (900 MHz)

• Ampliﬁes the low level RF signal ~11mW average power from the Exciter via the DC/Metering Board (70W-800 MHz, 800 MHz QUAD*, 900 MHz QUAD*)

• Ampliﬁes the low-level RF signal ~8 mW average power from the Exciter via the DC/Metering Board (40W- 800 MHz, 1500MHz)

• Provides an output of: ~8 W (70W, 800MHz) average power

~4 W (40W, 800 MHz) average power

~6 W (800 MHz QUAD* and 900 MHz QUAD*) average power ~17 W (900MHz) average power ~16 W (1500MHz) average power

• Provides RF interconnection from the LDM to the RF Splitter board

• Provides DC supply ﬁltering

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PA Theory of Operation

Table 2

Power Ampliﬁer Circuitry (Continued)

Circuit Description

RF Splitter/DC board • Interfaces with the DC/Metering Board to route DC power to the

Linear Final Module (LFM)

RF Interconnect Board (40W- 800 MHz PA only)

Combiner Board (70W-800 MHz PA, 800 MHz QUAD, 900 MHz QUAD)

LFMs

• Contains splitter circuits that split the RF output signal of the LDM to the three Linear Final Modules (40W- 800 MHz)

• Contains splitter circuits that split the RF output signal of the LDM to the six Linear Final Modules (70W- 800 MHz, 800 MHz QUAD and 900 MHz QUAD)

• Contains a Quadrature splitter circuit to split the RF output signal of the LDM to the two Linear Final Modules (900 MHz and 1500 MHz)

• Each module contains two Class AB ampliﬁers in parallel. Each module ampliﬁes one of three RF signals (~ 84 W average power) from the LDM (via the Splitter/DC board). Three LFMs provide a sum RF output of approximately 48 W average power, before losses. (40W, 800MHz)

• Each module contains two Class AB ampliﬁers in parallel. Each module ampliﬁes one of six RF signals (~ 8 W average power) from the LDM (via the Splitter/DC board). Six LFMs provide a sum RF output of approximately 97 W average power, before losses. (70W, 800MHz)

• Each module contains two Class AB ampliﬁers in parallel. Each module ampliﬁes one of six RF signals (~6W average power) from the LDM (via the splitter/DC Board). Six LFMs provide a sum RF output of approximately 73W average power , before losses. (800 MHZ QUAD* and 900 MHz QUAD*)

• Each module contains two Class push-pull AB ampliﬁers in parallel. Each module ampliﬁes one of two RF signals (~ 17 W average power) from the LDM (via the Splitter/DC board). Two LFMs provide a sum RF output of approximately 75 W average power, before losses. (900MHz)

• Each module contains two push-pull Class AB ampliﬁers in parallel. Each module ampliﬁes one of two RF signals (~ 16 W average power) from the LDM (via the Splitter/DC board). Two LFMs provide a sum RF output of approximately 56W average power, before losses. (1500MHz)

• Contains three transmission lines that interconnect the LFMs to the RF Combiner/Peripheral Module

• Contains three separate Quadrature combiner circuits that respectively combine the six RF outputs from the LFMs into three signals. These three signals, in turn, are applied to the RF Combiner/ Peripheral Module.

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PA Theory of Operation

Table 2 Power Ampliﬁer Circuitry (Continued)

Circuit Description

RF Combiner/Peripheral Module

Fan Assembly • Consists of three fans used to keep the PA within predetermined

NOTE: * The power outputs described in this section for the 800 QUAD and 900 QUAD P As are references to the single carrier mode operating at 52W average power out from the PA output connector.

• Contains a combiner circuit that combines the three RF signals from the RF Interconnect Board (40W- 800 MHz PA) or the Combiner Board (70W-800 MHz PA). It then routes the combined RF signal through a single stage circulator and a Low Pass Filter. The ﬁnal output signal is routed to the blindmate RF connector (40W-800 MHz and 70W-800 MHz PAs).

• Contains a combiner circuit that combines the three RF signals from the Combiner Board. It then routes the combined RF signal through a dual stage circulator and a Low Pass Filter. The ﬁnal output signal is routed to the blindmate RF output connector. (800 MHz QUAD and 900 MHz QUAD PAs)

• Contains a Quadrature combiner circuit to combine the RF signal from the two LFMs. It routes the combined RF signal through a circulator and a Low Pass Filter. The output signal is routed to the blindmate RF connector (900 MHz and 1500 MHz PAs)

• Contains an RF coupler that provides an RF feedback signal to the Exciter via a blindmate RF connector on the DC/Metering Board. Also contains a forward and reverse power detector for alarm and power monitoring purposes.

• Contains the thermistor that senses PA temperature and feeds the signal back to the DC/Metering Board for processing (40W-800 MHz, 70W-800 MHz, 900 MHz and 1500 MHz)

operating temperatures

DC/Metering Board (Non-QUAD PA)

The DC/Metering Board provides the interface between the PA and the Base Radio backplane. The preampliﬁed/modulated RF signal is input directly from the Exciter via the Base Radio backplane.

The RF input signal is applied to the input of the Linear Driver Module (LDM). The RF feedback signal is fed back to the Exciter, where it is monitored for errors.

The primary function of the DC/Metering Boards is to monitor proper operation of the PA. This information is forwarded to the Base Radio Controller (BRC) via the SPI bus. The alarms diagnostic points monitored by the BRC on the PA include the following:

❐ Forward power

❐ Reﬂected power

❐ PA temperature sense

❐ Fan Sensor

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PA Theory of Operation

DC/Metering Board (QUAD PA Only)

The DC/Metering Board in the QUAD Radio serves the same function as it does in other radios. However, its circuitry is modiﬁed for compatibility with the QUAD Station. As a result, its logic circuitry is operated at 3.3 VDC.

In addition to the functions listed for non-QUAD versions above, the following meter points are ported to the SPI bus:

❐ A and B Currents

❐ Thermistor (for PA temperature sensing circuit on the DC/Metering Board)

Linear Driver Module

40W-800 MHz, 70W-800 MHZ and 800 MHZ QUAD PAs

The Linear Driver Module (LDM) ampliﬁes the low-level RF signal from the Exciter. The LDM consists of a two-stage cascaded Class AB ampliﬁer, with the ﬁnal stage in a parallel conﬁguration.

See Table 2 for the approximate input and output levels of the various LDMs. The LDM output is fed to the RF Splitter/DC Distribution Board via an Interconnect Board.

900 MHz PA

The Linear Driver Module (LDM) ampliﬁes the low-level RF signal from the Exciter. The LDM consists of a three-stage, cascaded, Class AB ampliﬁer, with the ﬁrst two stages conﬁgured as distributed ampliﬁers and the ﬁnal stage in a push-pull conﬁguration. This output is fed directly to the RF Splitter/DC Distribution Board.

See Table 2 for the approximate input and output power of the 900 MHz LDM.

The LDM output is fed to the RF Splitter/DC Distribution Board via the Interconnect Board.

1500 MHz PA

The Linear Driver Module (LDM) takes the low level RF signal and ampliﬁes it. The LDM consists of a four stage, cascaded, Class AB ampliﬁer, with the ﬁnal stage conﬁgured in push-pull conﬁguration. This output is fed directly to the RF Splitter/DC Distribution Board.

See Table 2 for the approximate input and output power of the 1500 MHz LDM.

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PA Theory of Operation

900 QUAD PA

The Linear Driver Module (LDM) ampliﬁes the low-level RF signal from the Exciter. The LDM consists of a three stage, cascaded, Class AB ampliﬁer, with the ﬁnal stage in a parallel conﬁguration.

See Table 2 for the approximate input and output power of the 900 MHz QUAD LDM.

The LDM Output is fed to the RF Splitter/DC Distribution Board via the Interconnect Board.

Interconnect Board (40W-800 MHz, 70W-800 MHz , 800 MHz QUAD and 900 MHz QUAD)

The output of the LDM is applied to the Interconnect Board, which provides an RF connection to the RF Splitter/DC Distribution Board. As a separate function, area on the Interconnect Board serves as a convenient mounting location for electrolytic capacitors used for ﬁltering the +28 VDC supply.

RF Splitter/DC Distribution Board

40W-800 MHz, 70W-800 MHz, 800 MHz QUAD and 900 MHz QUAD

The RF Splitter portion of this board accepts the ampliﬁed signal from the LDM (via the Interconnect Board). The primary function of this circuit is to split the RF signal into drive signals for the LFMs.

In the 40W-800 MHz PA, this circuit splits the drive signal into three separate paths to be applied to the three LFMs, where the signals will be ampliﬁed further. In the 70W-800 MHz, 800 MHz QUAD and 900 MHZ QUAD PAs, this circuit splits the drive signal into six separate paths to be applied to the six LFMs, where the signals will be ampliﬁed further.

The DC Distribution portion of this board interfaces directly with the DC/ Metering Board to route DC power to the LFMs.

900 MHz and 1500 MHz

The RF Splitter portion of this board accepts the ampliﬁed signal from the LDM. The primary function of this circuit is to split the RF signal into two separate paths. These two outputs are fed directly to two separate Linear Final modules where the RF signals will be ampliﬁed further.

The DC Distribution portion of this board interfaces directly with the DC/ Metering Board to route DC power to the LFMs.

Linear Final Modules

40W-800 MHz, 70W-800 MHz, 800 MHz QUAD and 900 MHz QUAD

The RF Splitter output signals are applied directly into the LFMs for ﬁnal ampliﬁcation. Each LFM contains a coupler that splits the LFM input signal and feeds the parallel Class AB ampliﬁers that amplify the RF signals.

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PA Theory of Operation

In the 40W PA, the ampliﬁed signals are then combined on the LFM and sent directly to the RF Interconnect Board. In the 70W PA, the ampliﬁed signals are then combined on the LFM and sent directly to the Combiner Board.

See Table 2 for the approximate total summed output powers of the various LFMs, before output losses.

900 MHz PA

The RF signals from the outputs of the RF Splitter are applied directly into the Linear Final Module (LFM) for ﬁnal ampliﬁcation. Each LFM contains a branchline coupler that splits the LFM’s input signal and feeds the dual Class AB push-pull ampliﬁers that amplify the RF signals. The ampliﬁed signals are then combined on the LFM and sent directly to the RF Combiner circuit for ﬁnal distribution. See Table 2 for the approximate total summed output power of the 900 MHz LFMs, before output losses.

1500 MHz PA

The two RF signals from the outputs of the RF Splitter are input directly into the Linear Final Module (LFM) for ﬁnal ampliﬁcation. Each LFM contains a branchline coupler that splits the LFM’s input signal and feeds the dual Class AB push-pull ampliﬁers that amplify the RF signals. The ampliﬁed signals are then combined on the LFM , via a branchline coupler, and sent directly to the RF Combiner circuit for ﬁnal distribution. See Table 2 for the approximate total summed output power of the 1500 MHz LFMs, before output losses.

The current drains of the 1500 MHz LFMs are monitored by the A/D converter on the DC/Metering board. A voltage signal representative of the LFM current drain is sent to the BRC. A Power Ampliﬁer alarm is generated if the signal is outside of either the upper or lower limits.

RF Interconnect Board (40W- 800 MHz PA Only)

The RF Interconnect Board consists of transmission line paths which route the three output signals from the LFMs to the three inputs of the RF Combiner/ Peripheral Module.

Combiner Board (40W- 800 MHz, 70W- 800 MHz, 800 MHz QUAD and 900 MHz QUAD PAs)

The Combiner Board combines pairs of signals into single signals, thereby combining the six signals from the LDMs into three signals. The resulting three signals are applied to the RF Combiner/Peripheral Module.

RF Combiner/Peripheral Module (40- 800 MHz, 70W- 800 MHz PAs)

This module consists of two portions: an RF combiner and a peripheral module. The RF Combiner portion of the module combines the three RF signals from the RF Interconnect Board (40W- 800 MHz PA) or the Combiner Board (70W- 800 MHz PA) into a single signal using a Wilkinson coupler arrangement.

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PA Theory of Operation

Following the combiner circuit, the single combined RF signal is then passed through a directional coupler which derives a signal sample of the LFM RF power output. Via the coupler, a sample of the RF output signal is fed to the Exciter, via the DC/Metering Board, as a feedback signal. Following the coupler, the power output signal is passed through a single stage circulator, which protects the PA in the event of high reﬂected power.

The peripheral portion of the module provides a power monitor circuit that monitors the forward and reﬂected power of the output signal. This circuit furnishes the A/D converter on the DC/Metering Board with input signals representative of the forward and reﬂected power levels.

For forward power, a signal representative of the measured value is sent to the BRC via the SPI bus. The BRC determines if this level is within tolerance of the programmed forward power level. If the level is not within parameters, the BRC will issue a warning to the site controller which, in turn, will shut down the Exciter if required.

Reﬂected power is monitored in the same manner. The BRC uses the reﬂected power to calculate the voltage standing wave ratio (VSWR). If the VSWR is determined to be excessive, the forward power is rolled back. If it is extremely excessive, the BRC issues a shut-down command to the Exciter.

A thermistor is located on the RF Combiner/Peripheral module to monitor the operating temperature of the PA. The thermistor signal indicating excessive temperature is applied to the A/D converter and then sent to the BRC. The BRC rolls back forward power if the monitored temperature is excessive.

900 MHz PA

This module consists of two parts: an RF combiner and a peripheral module. The RF combiner combines the two RF signals from each LDM into a single signal, using a branchline coupler arrangement. Then, the RF signal passes through a directional coupler which derives a signal sample of the LFMs RF power output. Via the coupler, a sample of the RF output signal is fed to the Exciter, via the DC/ Metering Board, as a feedback signal, thereby allowing the Exciter to accordingly adjust signal drive. Following the coupler, the power output signal is passed through a circulator, which protects the PA in the event of high reﬂected power.

A power monitor circuit monitors the forward and reﬂected power of the output signal. This circuit furnishes the A/D converter on the DC/Metering Board with input signals representative of the forward and reﬂected power levels.

A thermistor is located on the RF Combiner/Peripheral module to monitor the operating temperature of the PA. A voltage representative of the monitored

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PA Theory of Operation

temperature is sent from the A/D converter to the BRC. The BRC rolls back forward power if the monitored temperature is excessive.

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PA Theory of Operation

1500 MHz

Both LFM outputs are input into this module where they are combined, with a branchline coupler, for a single output signal. The RF signal is ﬁrst coupled to the Exciter module, via the DC/Metering Board, so that it can be monitored. The RF output signal is then passed through a circulator that acts as a protection device for the PA in the event of reﬂected power.

A power monitor circuit monitors the forward and reﬂected power of the output signal. This circuit provides the A/D converter on the DC/Metering board with an input signal representative of the forward or reﬂected power levels.

For forward power, a signal representative of the measured value is sent to the BRC module via the SPI bus. The BRC determines if this level is within tolerance of the programmed forward power level. The programmed forward power is set through the use of MMI commands. If the level is not within certain parameters, the BRC will issue a warning to the site controller and may shut-down the Exciter module.

Reﬂected power is monitored in the same manner except that the BRC determines an acceptable reﬂected power level. The BRC calculates the reﬂected power through an algorithm stored in memory. If the reﬂected power is determined to be excessive, the forward power is rolled back. If the reﬂected power level is extremely excessive, the BRC will issues a shut-down command to the Exciter module.

A thermistor is located on the RF Combiner/Peripheral module to monitor the operating temperature of the Power Ampliﬁer. A voltage representative of the monitored temperature is sent from the A/D converter to the BRC. The BRC issues a cut-back command to the Exciter module if the monitored temperature is greater than 121˚ F (85˚ C).

RF Combiner/Peripheral Module (800 MHz QUAD and 900 MHz QU AD)

This module consists of two parts: an RF combiner and a Peripheral module. The RF combiner combines three RF signals from the Combiner Board into a single signal using a Wilkinson coupler arrangement. Following the combiner circuit, the single combined RF signal is then passed through a directional coupler, which derives a signal sample of the LFM RF power output. Via the coupler, a sample of the RF output signal is fed to the Exciter, via the DC/Metering Board, as a feedback signal. Following the coupler, the power output signal is passed through a dual stage circulator, which protects the PA in the event of high reﬂected power.

The Peripheral module provides a power monitor circuit that monitors the forward and reﬂected power of the output signal. This circuit furnishes the A/D converter on the DC/Metering Board with input signals, representative of the forward and reﬂected power levels.

For forward power, a signal representative of the measured value is sent to the BRC via the SPI bus. The BRC determines if this level is within tolerance of the programmed forward power level. If the level is not within tolerance, the BRC will issue a warning to the site controller, which, in turn, will shut down the Exciter, if required.

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Reﬂected power is monitored in the same manner. The BRC uses the reﬂected power to calculate the voltage standing wave ratio (VSWR). If the VSWR is calculated as excessive, forward power is rolled back. If the VSWR calculation is exceedingly out of tolerance, the BRC issues a shut-down command to the Exciter.

NOTE

The Thermistor that monitors the operating temperature of the 800 MHZ QUAD and 900 MHz QUAD PAs is located on the DC/Metering Board

Fan Module

The PA contains a fan assembly to maintain normal operating temperature through the use of a cool air intake. The fan assembly consists of three individual fans in which airﬂow is directed across the PA heatsink.

The current draw of the fans is monitored by the DC/Metering Board. A voltage representative of the current draw is monitored by the BRC. The BRC ﬂags the iSC if an alarm is triggered. The PA LED on the front panel of the BRC also lights, however the PA does not shut down due to a fan failure alone.

This Page Intentionally

Left Blank

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EBTS System Manual - Vol 2 800/900/1500 MHz Base Radios

Power Amplifier

40W- 800 MHz Power Ampliﬁer – TLF2020 (LF1772)

Functional Block Diagram

RF INPUT

SPI BUS

TO/FROM BRC

ADDRESS BUS

FROM BRC

RF OUT

TO ANTENNA

ADDRESS DECODE, MEMORY,

& A/D CONVERTER CIRCUITRY

CLK/DATA

MEMORY

CHIP SELECT

DECODE

CIRCUITRY

BOARD SELECT

DECODE

CIRCUITRY

CHIP SELECT

CHIP

SELECT

A/D

CONVERTER

LINEAR DRIVER MODULE

STAGE

CLASS AB

FAN SENSE PA TEMP SENSE FWD PWR REF PWR

LOW-PASS

FILTER

STAGE 2

CLASS AB

50 OHM

LOAD

INTERCONNECT

+28 VDC

FAN ASSEMBLY

TEMPERATURE

SENSOR

BOARD

FILTER

PERIPHERAL MODULE

RF SPLITTER/DC DISTRIBUTION BOARD

50 OHM

LOAD

50 OHM

LOAD

RF COMBINER/

LINEAR FINAL

MODULES

INTERCONNECT

BOARD

STAGE 3

CLASS AB

EBTS611 051398LLN

RF FEEDBACK

TO EXCITER

MODULE

CIRCULATOR

LOAD

50 OHM

LOAD

50 OHM

Figure 5 TLF2020 (CLF1772) 40W- 800 MHz PA Functional Block Diagram

(Sheet 1 of 1)

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Power Amplifier

70W- 800 MHz Power Ampliﬁer – TLN3335 (CLF1771)

Functional Block Diagram

RF INPUT

SPI BUS

TO/FROM BRC

ADDRESS BUS

FROM BRC

ADDRESS DECODE, MEMORY,

& A/D CONVERTER CIRCUITRY

CLK/DATA

MEMORY

CHIP SELECT

DECODE

CIRCUITRY

BOARD SELECT

DECODE

CIRCUITRY

CHIP SELECT

CHIP

SELECT

A/D

CONVERTER

LINEAR DRIVER MODULE

STAGE

CLASS AB

FAN SENSE PA TEMP SENSE FWD PWR REF PWR

STAGE 2

CLASS AB

INTERCONNECT

BOARD

FILTER

+28 VDC

FAN ASSEMBLY

RF SPLITTER/DC DISTRIBUTION BOARD

50 OHM

LOAD

50 OHM

LOAD

50 OHM

LINEAR FINAL

MODULES

COMBINER

BOARD

50 OHM

LOAD

50 OHM

LOAD

50 OHM

LOAD

RF COMBINER/

PERIPHERAL MODULE

50 OHM

LOAD

50 OHM

LOAD

50 OHM

STAGE 3

CLASS AB

EBTS417 120497JNM

RF OUT

TO ANTENNA

RF FEEDBACK

TO EXCITER

MODULE

TEMPERATURE

SENSOR

LOW-PASS

FILTER

50 OHM

LOAD

CIRCULATOR

Figure 6 TLN3335 (CLF11771) 70W- 800 MHz PA Functional Block

Diagram (Sheet 1 of 1)

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EBTS System Manual - Vol 2 Troubleshooting

Troubleshooting

Overview

This chapter is a guide for isolating Base Radio failures to the FRU level. There are three sections- one each for Generation 2 Single Channel Base Radios, QUAD Channel Base Radios and Legacy Single Channel Base Radios. Each section contains procedures for:

❐ Troubleshooting

❐ Veriﬁcation/Station Operation

The maintenance philosophy for any Base Radio is to repair by replacing defective FRUs with new FRUs. This method limits down-time.

Two troubleshooting procedures are included. Each procedure is designed to quickly identify faulty FRUs.

Ship defective FRUs to a Motorola repair depot for repair.

Section Page Description

Troubleshooting Preliminaries

Generation 2 Single Channel Base Radio FRU Replacement Procedures

QUAD Channel Base Radio/Base Radio FRU Replacement Procedures

Legacy Single Channel Base Radio FRU Replacement Procedures

2 This section includes recommended equipment and

troubleshooting procedures

5 This includes Generation 2 Single Channel Base

Radio Replacement Procedure , including MMI commands necessary to verify proper operation.

44 This section includes QUAD Channel BR FRU

Replacement Procedures, including MMI commands necessary to verify proper operation.

99 This section includes Legacy Single Channel BR FRU

Replacement Procedures., including MMI commands necessary to verify proper operation.

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Troubleshooting Preliminaries

Recommended T est Equipment

Table 1 lists recommended test equipment necessary for performing Base Radio troubleshooting/veriﬁcation procedures.

Table 1 Recommended T est Equipment

Test Equipment Model Number Use

Communications Analyzer R2660 w/iDEN option Used for checking receive and

Dummy Load (50 Ω, 150 W) none Used to terminate output

Service Computer IBM or clone, 80286 or

Portable Rubidium Frequency Standard

Power Meter none Used to measure reﬂected and

RF Attenuator, 250 W, 10 dB Motorola 0180301E72 Protection for R2660

Software:

Communication

File Compression

RF Power Mete

Low Power Sensor Head

better

Ball Efratom Frequency standard for R2660,

Procomm Plus

PKZip

HP438A

HP8481D

transmit operation (iDEN signaling capability) and station alignment

Local service terminal

netting TFR

forward power

Local service computer

Compress/Decompress data (Single Channel BR only)

Used for calibration of the R2660 signal (QUAD BR only)

Used in conjunction with Power Meter (QUAD BR only)

Troubleshooting Procedures

Many of the troubleshooting and station operation procedures require Man-Machine Interface (MMI) commands. These commands are used to communicate station level commands to the Base Radio via the RS-232 communications port located on the front of the BRC.

Routine Checkout

Procedure One is a quick, non-intrusive test performed during a routine site visit. Use this procedure to verify proper station operation without taking the station out of service. Figure 1 shows the Procedure One Troubleshooting Flowchart.

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Troubleshooting Preliminaries

ROUTINE

SITE VISIT

OBSERVE LED

INDICATORS

Refer to

Controls and Indicators

for LED Definitions

PROCEDURE 1

Module Suspected

of Being Faulty?

CHECK CURRENT

ALARM STATUS

Use MMI command

get alarms

to check alarm status

Module Suspected

of Being Faulty?

DONE

Figure 1 Procedure One Troubleshooting Flowchart

Yes

Go to Troubleshooting

Procedure 2 Flow Chart

Go to Troubleshooting

Procedure 2 Flow Chart

EBTS021 071895JNM

Reported/Suspected Problem

Use Procedure Two to troubleshoot reported or suspected equipment malfunctions. Perform this procedure with equipment in service (non-intrusive) and with equipment taken temporarily out of service (intrusive).

Figure 2 shows the Procedure Two Troubleshooting Flowchart.

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Troubleshooting Preliminaries

PROBLEM

REPORTED OR SUSPECTED

OBSERVE LED

INDICATORS

Refer to

Controls and Indicators

for LED Definitions

PROCEDURE 2

Module Suspected

of Being Faulty?

CHECK CURRENT

ALARM STATUS

Use MMI command

get alarms

to check alarm status

Module Suspected

of Being Faulty?

PERFORM

VERIFICA TION TESTS

Use MMI commands to

perform tests as specified in

station verification procedure.

Module Suspected

of Being Faulty?

DONE

Clear Problem Report

Yes

Go to Module Replacement

Procedures Section

Go to Module Replacement

Procedures Section

Go to Module Replacement

Procedures Section

EBTS022 071895JNM

Figure 2 Procedure T wo T roubleshooting Flowchart

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EBTS System Manual - Vol 2 Troubleshooting

Generation 2 Single Channel Base Radio FRU Replacement Procedures

Replace suspected station modules with known non-defective modules to restore the station to proper operation. The following procedures provide FRU replacement instructions and post-replacement adjustments and/or veriﬁcation instructions.

Generation 2 Single Channel Base Radio Replacement Procedure

NOTE

The Base Radio removal and installation procedures are included for reference or buildout purposes. Field maintenance of Base Radios typically consists of replacement of FRUs within the Base Radio. Perform Base Radio FRU replacement in accordance with “Base Radio FRU Replacement Procedure” below.

Perform Base Radio (BR) replacement as described in the following paragraphs.

Removal

Remove BR from Equipment Cabinet as follows:

1. Remove power from the Base Radio by setting the Power Supply ON/OFF

switch to the OFF position.

2. Tag and disconnect the cabling from the BR rear panel connectors.

3. Remove the four M6 TORX screws which secure the BR front panel to the

Equipment Cabinet mounting rails.

WARNING

BR WEIGHT EXCEEDS 60 LBS (27 KG). USE TWO-PERSON LIFT WHEN REMOVING OR INSTALLING BR FROM EQUIPMENT CABINET. MAKE CERTAIN BR IS FULLY SUPPORTED WHEN BR IS FREE FROM MOUNTING RAILS.

While supporting the BR, carefully remove the BR from the Equipment

Cabinet by sliding the BR from the front of cabinet.

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Installation

Install BR in Equipment Cabinet as follows:

1. If adding a BR, install side rails in the appropriate BR mounting position in

the rack.

2. While supporting the BR, carefully lift and slide the BR in the Equipment

Cabinet mounting position.

3. Secure the BR to the Equipment Cabinet mounting rails using four M6

TORX screws. Tighten the screws to 40 in-lb (4.5 Nm).

4. Connect the cabling to the BR rear panel connectors as tagged during the BR

removal. If adding a BR, perform the required cabling in accordance with the Cabling Information subsection of the RFDS section applicable to the system.

5. Perform BR activation in accordance with Station Veriﬁcation Procedures

below.

Anti-Static Precautions

Motorola publication 68P81106E84 provides complete static protection information. This publication is available through Motorola National Parts.

Observe the following additional precautions:

❐ Wear a wrist strap (Motorola Part No. 4280385A59 or equivalent) at all times

❐ A grounding clip is provided with each EBTS cabinet. If not available, use

❐ DO NOT insert or remove modules with power applied to the Base Radio.

❐ Keep spare modules in factory packaging for transporting. When shipping

CAUTION

The Base Radio contains static-sensitive devices. when replacing Base Radio FRUs, always wear a grounded wrist strap and observe proper anti-static procedures to prevent electrostatic discharge damage to Base Radio modules.

when servicing the Base Radio to minimize static build-up.

another appropriate grounding point.

ALWAYS turn the power OFF using the Power Supply rocker switch on the front of the Power Supply module.

modules, always pack in original packaging.

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FRU Replacement Procedure

Perform the following steps to replace any of the Base Radio FRUs:

NOTE

When servicing Base Radios (BRs) in situations where the Control Board or the entire BR is replaced, the integrated Site Controller (iSC) will automatically reboot the serviced BR if the BR has been off-line for a period not less than the value contained in “Replacement BRC Accept Timer” (default is 3 minutes). If the BR is turned on prior to that time value, power the BR down and wait the minimum timer length before re-powering the BR.

1. Remove power from the Base Radio by setting the Power Supply rocker

switch (located behind the front panel of the Power Supply) to the OFF (0) position.

2. Loosen the front panel fasteners. These are located on each side of the

module being replaced.

3. Pull out the module.

4. Insert the non-defective replacement module by aligning the module side

rails with the appropriate rail guides inside the Base Radio chassis.

5. Gently push the replacement module completely into the Base Radio chassis

assembly using the module handle(s).

CAUTION

DO NOT slam or force the module into the chassis assembly. This will damage the connectors or backplane.

6. Secure the replacement module by tightening the front panel fasteners to the

speciﬁed torque of 5 in-lbs.

7. Apply power to the Base Radio by setting the switch to the ON position.

8. Perform the Station Veriﬁcation Procedure provided below.

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Generation 2 Single Channel BR Power Ampliﬁer (PA) Fan FRU Replacement

Perform the following steps to replace the Power Ampliﬁer (PA) fans.

1. Remove the Power Ampliﬁer from the Base Radio per FRU Replacement

Procedure.

2. Disconnect fan power cable from PA housing.

3. Remove front panel from fan assembly.

4. Remove fan assembly from PA chassis.

NOTE

Reverse above procedure to install new fan kit.

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Generation 2 Single Channel BR Station Veriﬁcation Procedures

Perform the Station Veriﬁcation Procedures whenever you replace a FRU. The procedures verify transmit and receive operations. Each procedure also contains the equipment set-up.

Generation 2 Single Channel BR Replacement FRU Veriﬁcation

All module speciﬁc information is programmed in the factory prior to shipment. Base Radio speciﬁc information (e.g., receive and transmit frequencies) is downloaded to the Base Radio from the network/site controller.

Replacement FRU alignment is not required for the Base Radio.

Generation 2 Base Repeater FRU Hardware Revision Veriﬁcation

NOTE

The following procedure requires the Base Radio to be out of service. Unless the Base Radio is currently out of service, Motorola recommends performing this procedure during off-peak hours. Performing this procedure then minimizes or eliminates disruption of service to system users.

1. Connect one end of the RS-232 cable to the service computer.

2. Connect the other end of the RS-232 cable to the Service Access port, located

on the front panel of the CNTL module.

3. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the Control Module front panel. At the prompt, hit a Carriage Return on the service computer to enter the test application mode. Using the password motorola, log in to the BR.

> login -uﬁeld password: motorola

ﬁeld>

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4. Collect revision numbers from the station by typing the

following command:

ﬁeld> fv -oplatform ﬁeld>

5. If all modules return revision numbers of the format “Rxx.xx.xx”, then all

6. Set desired cabinet id and position and of BR by typing the following

commands, with the ﬁnal number on each command being the desired cabinet id and position. The command example below sets cabinet id to 5, and cabinet position to 2.

ﬁeld> ci -oplatform -c5 ﬁeld> pi -oplatform -p2

ﬁeld>

7. After checking all BRs, log out by keying the following command:

ﬁeld> logout ﬁeld>

Generation 2 Transmitter Veriﬁcation

The transmitter veriﬁcation procedure veriﬁes the transmitter operation and the integrity of the transmit path. This veriﬁcation procedure is recommended after replacing an Exciter, Power Ampliﬁer, BRC, or Power Supply module.

The following procedure requires the Base Radio to be out of service. Unless the Base Radio is currently out of service, Motorola recommends performing this procedure during off-peak hours. This minimizes or eliminates disruption of service to system users.

NOTE

Equipment Setup

To set up the equipment, use the following procedure:

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1. Remove power from the Base Radio by setting the Power Supply rocker

switch (located behind the front panel of the Power Supply) to the OFF (0) position.

2. Connect one end of the RS-232 cable to the service computer.

3. Connect the other end of the RS-232 cable to the Service Access port located

on the front panel of the BRC.

4. Disconnect the existing cable from the connector labeled PA OUT. This

connector is located on the backplane of the Base Radio.

CAUTION

Make sure power to BR is OFF before disconnecting transmitter RF connectors. Disconnecting transmitter RF connectors while the BR is keyed may result in RF burns from arcing.

5. Connect a test cable to the PA OUT connector.

6. Connect a 10 dB attenuator on the other end of the test cable.

7. From the attenuator, connect a cable to the RF IN/OUT connector on the

R2660 Communications Analyzer.

8. Remove power from the R2660 and connect the Rubidium Frequency

Standard 10MHZ OUTPUT to a 10 dB attenuator.

9. Connect the other end of the 10 dB attenuator to the 10MHZ REFERENCE

OSCILLATOR IN/OUT connector on the R2660.

NOTE

Refer to the equipment manual provided with the R2660 for further information regarding mode conﬁguration of the unit (Motorola Part No. 68P80386B72).

10. Set the R2660 to the EXT REF mode.

11. Apply power to the R2660.

12. Set the R2660 to the SPECTRUM ANALYZER mode with the center

frequency set to the transmit frequency of the Base Radio under test.

13. Perform the appropriate transmitter veriﬁcation procedure below for the

particular Power Ampliﬁer used in the Base Radio.

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T ransmitter Veriﬁcation Procedure

This procedure provides commands and responses to verify proper operation of the transmit path for 800 MHz Base Radios.

1. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the Control Module front panel. At the prompt, hit a Carriage Return on the service computer to enter the test application mode. Using the password motorola, login to the BR.

> login -uﬁeld password: motorola

ﬁeld>

2. Dekey the BR to verify that no RF power is being transmitted. Set the

transmit DSP test mode to “stop.” At the BRC> prompt, type:

ﬁeld> power -otxch1 -p0 ﬁeld> ptm -otx_all -mstop

NOTE

The following command keys the transmitter. Make sure that transmission only occurs on licensed frequencies or into an RF dummy load.

3. Key the BR to 40 watts, following the steps below from the BRC> prompt:

3.1 Set the transmitter frequency.

ﬁeld> freq -otxch1 -f860

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3.2 Enable the channel by setting a data pattern to “iden”

ﬁeld> dpm -otxch1 -miden

NOTE

After the following command is entered, power will be transmitted at the output of the Power Ampliﬁer.

3.3 Set the transmit power to 40 watts and key the BR.

ﬁeld> ptm -otx_all -mdnlk_framed ﬁeld> power -otxch1 -p40

4. After keying the Base Radio, verify the forward and reﬂected powers of the

station along with the station VSWR with the parameters listed in Table 2.

Table 2 Generation 2 BR Transmitter Parameters

Parameter Value or Range

Forward Power Greater than 36 Watts

Reﬂected Power Less than 2.0 Watts

VSWR Less than 1.6:1

NOTE

The reported value for forward power is not indicative of Base Radio performance. This value is reported from the internal wattmeter. These limits are only for veriﬁcation of operation and are not representative of true operating power of the transmitter.

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4.1 At the BRC> prompt, type:

ﬁeld> power -otx_all

This command returns all active alarms of the Base Radio.

4.2 At the BRC> prompt, type:

ﬁeld> alarms -ofault_hndlr

alarms command displays alarms, refer to the System

If the Troubleshooting section of this manual for corrective actions.

5. View the spectrum of the transmitted signal on the R2660 Communications

Analyzer in the Spectrum Analyzer mode. Figure 5 shows a sample of the spectrum.

EBTS071 032394JNM

Figure 3 Generation 2 Carrier Spectrum

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6. Dekey the BR to verify no RF power is being transmitted. Set the transmit

DSP test mode to “stop.” At the ﬁeld> prompt, type:

ﬁeld> power -otxch1 -p0 ﬁeld> ptm -otx_all -mstop

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Equipment Disconnection

Use the following steps to disconnect equipment after verifying the transmitter.

1. Remove power from the Base Radio by setting the Power Supply rocker

switch (located behind the front panel of the Power Supply) to the OFF (0) position.

2. Disconnect the RS-232 cable from the connector on the service computer.

3. Disconnect the other end of the RS-232 cable from the RS-232 connector

located on the front panel of the BRC.

CAUTION

Make sure power to BR is OFF before disconnecting transmitter RF connectors. Disconnecting transmitter RF connectors while the BR is keyed may result in RF burns from arcing.

4. Disconnect the test cable from the PA OUT connector located on the

backplane of the Base Radio.

5. Connect the standard equipment cable to the PA OUT connector.

6. Disconnect the 10 dB attenuator from the other end of the test cable.

7. From the attenuator, disconnect the cable to the R2660

Communications Analyzer.

8. Restore power to the Base Radio by setting the Power Supply rocker switch

to the ON (1) position.

9. If necessary, continue with the Receiver Veriﬁcation Procedure.

Receiver Veriﬁcation Procedure: Generation 2 Base Radio with RFDS

This procedure provides commands and responses to verify proper operation of the Base Radio receiver paths. Perform the procedure on all four channels in each Base Radio in the EBTS.

1. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the front of the EX/BRC module. Using the terminal

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program on the service computer, log onto the BR. Bold type indicates user input commands.

>login –uﬁeld >password: motorola

ﬁeld>

2. Set the Frequency of the R2660 to 810MHz. Power out should be set to

–80 dBm.

3. Set the channel frequency.

ﬁeld> freq -orxch1 -f810

4. Verify the R2660 signal level:

ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppc -orxch1 -mchn -s1 ﬁeld> ppr -orxch1 -r1 -a50

5. The resulting output will look similar to this:

ﬁeld> ppr -orxch1 -r1 -a100

SGC Atten.(dBm)=0.000000 Freq. Offset=-15.059323 Sync. Attempts=1.000000 Sync. Successes=1.000000 BER%=0.000000 RX Path1 RSSI=-80.934021 RX Path2 RSSI=-127.012520 RX Path3 RSSI=-127.012520 Chn sig. strength=-57.098698 Chn intf. strength=-91.696739

ﬁeld>

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NOTE

RX Path1 RSSI must read -80dBm ±1dBm for the BER Floor veriﬁcation to be accurate. Adjust the output level of the R2660 to compensate for loss in the test cables and three-way splitter.

BER Floor Measurement: Generation 2 Base Radio with RFDS

1. Verify that the R2660 is set to 810MHz and is producing a power level of

-80dBm. (See “Receiver Veriﬁcation Procedure: QUAD Base Radio with RFDS” on page 61.)

2. Using the MMI commands below, issue the command to put the BR into

single branch mode. If the resulting bit error rate for receiver branches 1, 2, and 3 is less than 0.01%, the receiver has passed the test.

3. Check Receiver 1. At the prompt, type (inputs are in bold, comments are in

italics):

ﬁeld> freq -orxch1 -f810 ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppc -orxch1 -mchn -s1 ﬁeld> ppr -orxch1 -a1000 -r1

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr2 -son ﬁeld> ppr -orxch1 -a1000 -r1

(skip this step if the system is conﬁgured for 2 Branch Diversity)

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -db3 -son ﬁeld> ppr -orxch1 -a1000 -r1

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4. Enter the command to return all active alarms of the Base Radio. At the

prompt, type:

NOTE

If the command displays alarms, refer to the System Troubleshooting section for corrective actions.

5. As shown below respectively for 800 MHz Generation 2 Base Radios, the

following command returns the kit numbers of the receiver and all other modules. At the prompt, type:

ﬁeld> fc –oplatform

Receiver Sensitivity Measurement: Generation 2 Base Radio with RFDS

The receiver sensitivity measurement consists of sending a calibrated RF level of

-113.5dBm to the antenna ports at the top of the rack. This includes the RFDS in the receive channel and measures the combined performance of the Base Radio and the RFDS. The R2660 output must be calibrated prior to the taking of this measurement.

Calibration of the R2660 output level

1. Verify that the R2660 is set to 810MHz and adjust the output power to a level

of -50dBm

2. Calibrate HP438A Power Meter. Refer to the HP users guide that came with

the Meter. Below is a general procedure that can be followed.

2.1 Attach 8481D Power Sensor to the Sensor input on the front of the

437B.

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2.2 Attach the included HP 11708A 30dB pad to the Power input on

the front on the 473B.

2.3 Power on the 437B.

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2.4 Connect the Power Meter to the female end of the 30dB pad

extruding from the Power input.

2.5 Press the “Zero” button on the 437B.

2.6 Wait for Zeroing operation to complete.

2.7 Press “Shift-Zero” to enter the Cal value. This is listed as CF on

the Power Sensor.

2.8 Wait for Cal operation to complete.

2.9 Press “Shift-Freq” to enter the Cal Factor. This is listed as Cf in a

chart vs. freq on the Power Sensor. Choose the closest frequency range for the application. For 800MHz measurements, interpolate between 1.0GHz and 0.5GHz to obtain a Cf of 99.0

2.10 For measurement of iDEN or Tornado 6:1 waveforms, press

“Offset” and enter 7.78dB.

3. Disconnect Cable A (see Figure 7 on page -60) from the Base Radio and

connect it to the Power Sensor Head.

4. Increase the power level on the R2660 until the HP 437B Power Meter reads

-50dB.

5. Record the DISPLAYED power level of the R2660 as Calfactor A.

6. The path loss through the cable and splitter system is Calfactor A + 50.

Example: R2660 reads -44dBm

HP 437B reads -50dBm

Calfactor A = -44, path loss = 6dB

7. Path loss must be determined for each Antenna cable A,B,C (see Figure 7 on

page -60). If comparable cables are used for all three the path losses of all three should be the same.

8. Additional power will be added to the R2660 in the sensitivity measurement

to balance out the additional path loss value.

9. Reconnect cables A,B,C (see Figure 7 on page -60) to Antenna Ports 1,2,3.

10. Set the R2660 to Frequency 810MHz and a Power level of -113.5dBm + path

loss.

Example: If your path loss was 6dB, set the R2660 to-107.5dBm.

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11. Using the MMI commands below, issue the command to put the BR into

single branch mode. If the resulting bit error rate for receiver branches 1, 2, and 3 is less than 8.00%, the receiver has passed the test.

ﬁeld> freq -orxch1 -f810 ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppc -ortch1 -mchn -s1 ﬁeld> ppr -orxch1 -a100 -r1

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr2 -son ﬁeld> ppr -orxch1 -a100 -r1

(skip this step if the system is conﬁgured for 2 Branch Diversity)

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -db3 -son ﬁeld> ppr -orxch1 -a100 -r1

12. Enter the command to return all active alarms of the Base Radio. At the

prompt, type:

ﬁeld> alarms -ofault_hndlr

NOTE

If the command displays alarms, refer to the System Troubleshooting section for corrective actions.

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13. As shown below respectively for 800 MHz Generation 2 Base Radios, the

following command returns the kit numbers of the receiver and all other modules. At the prompt, type:

ﬁeld> fc –oplatform

Receiver Veriﬁcation: Measurement of the Generation 2 Base Radio (No RFDS)

The receiver veriﬁcation procedure sends a known test signal into the Base Radio to verify the receive path. The signal is fed DIRECTLY into the ANTENNA PORTS in the back of the Base Radio. This excludes the RFDS and antenna cabling from the measurement. This veriﬁcation procedure is recommended after replacing a Receiver, BRC, or Power Supply module.

NOTE

The following procedure requires the Base Radio to be out of service. Unless the base radio is currently out of service, Motorola recommends performing this procedure during off-peak hours. This minimizes or eliminates disruption of services to system users.

Equipment Setup

Set up the equipment for the receiver veriﬁcation as follows:

1. Remove power from the Base Radio by setting the Power Supply rocker

switch (located behind the front panel of the Power Supply) to the OFF (0) position.

2. Connect one end of the RS-232 cable to the service computer.

3. Connect the other end of the RS-232 cable to the STATUS port located on the

front panel of the BRC.

4. Disconnect the existing cables from the connectors labeled RX1, RX2, and

RX3 on the back of the Base Radio. If the radio is conﬁgured for 2 Branch diversity, disconnect the RX1 and RX2 cables.

5. Connect test cables from each of the RX1, RX2, and RX3 connectors (Cables

A,B,C in Figure 8) to the input ports of the 3-way splitter. For 2 Branch diversity tests, load the RX3 cable with an appropriate 50ohm load or connect it to the RX3 antenna port on the radio.

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6. Connect an additional test cable (Cable D in Figure 7 on page -60) from the

summed port of the 3-way splitter to the RF IN/OUT connector on the R2660 Communications Analyzer.

7. Remove power from the R2660 and connect the Rubidium Frequency

Standard 10MHZ OUTPUT to a 10 dB attenuator.

8. Connect the other end of the 10 dB attenuator to the 10MHZ REFERENCE

OSCILLATOR IN/OUT connector on the R2660.

NOTE

Refer to the equipment manual provided with the R2660 for further information regarding mode conﬁguration of the unit (Motorola Part No. 68P80386B72).

9. Set the R2660 to the EXT REF mode

10. Apply power to the R2660.

Receiver Veriﬁcation Procedure: Generation 2 Base Radio

This procedure provides commands and responses to verify proper operation of the Base Radio receiver paths. Perform the procedure on the receiver in each Base Radio in the EBTS.

1. Power on the BR using the front switch on the Power Supply Module. Press

the reset button on the front of the BRC module. Using the terminal program on the service computer, log onto the BR. Bold type indicates user input commands.

> login -uﬁeld > password: motorola

ﬁeld >

2. Set the Frequency to of the R2660 to 810MHz. Power out should be set to

–80 dBm.

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3. Enable Global Synchronization.

ﬁeld> es -orx_all -tglobal ﬁeld> freq -orxch1 -f810

4. Disable System Gain.

ﬁeld> sge -orx_all -soff

NOTE

This step should only be performed if the Base Radio is being connected directly to the Base Radio Antenna ports. If veriﬁcation is being performed at the top of the rack (adding an RFDS), disregard the above command.

5. Verify the R2660 signal level.

ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppc -orych1 -mchn -s1 ﬁeld> ppr -orxch1 -r1 -a100

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6. The resulting output will look similar to this:

ﬁeld> ppr -orxch1 -r1 -a100

NOTE

RX Path1 RSSI must read -80dBm ± 1dBm for the BER Floor veriﬁcation to be accurate. Adjust the output level of the R2660 to compensate for loss in the test cables and three-way splitter.

BER Floor Measurement: Generation 2 Base Radio

1. Verify that the R2660 is set to 810MHz and is producing a power level of

-80dBm. (See “Receiver Veriﬁcation Procedure: Generation 2 Base Radio” on page 23.)

2. Using the MMI commands below, issue the command to put the BR into

single branch mode. If the resulting bit error rate for receiver branches 1, 2, and 3 is less than 0.01%, the receiver has passed the test.

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3. Check Receiver. At the prompt, type (inputs are in bold, comments are in

italics):

ﬁeld> ppc -orxch1 -mchn -s1 ﬁeld> freq -orxch1 -f810

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppr -orxch1 -a1000 -r1

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr2 -son ﬁeld> ppr -orxch1 -a1000 -r1

(skip this step if the system is conﬁgured for 2 Branch Diversity)

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -db3 -son ﬁeld> ppr -orxch1 -a1000 -r1

4. Enter the command to return all active alarms of the Base Radio. At the

prompt, type:

ﬁeld> alarms -ofault_hndlr

NOTE

If the command displays alarms, refer to the System Troubleshooting section for corrective actions.

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5. As shown below respectively for 800 MHz Generation 2 Base Radios, the

following command returns the kit numbers of the receiver and all other modules. At the BRC> prompt, type:

ﬁeld> fc –oplatform

Receiver Sensitivity Measurement: Generation 2 Base Radio

1. Verify that the R2660 is set to 810MHz and adjust the output power to a level

of -50dBm.

2. Calibrate HP438A Power Meter. Refer to the HP users guide that came with

the Meter. Below is a general procedure that can be followed.

2.1 Attach 8481D Power Sensor to the Sensor input on the front of the

437B.

2.2 Attach the included HP 11708A 30dB pad to the Power input on

the front on the 473B.

2.3 Power on the 437B.

2.4 Connect the Power Meter to the female end of the 30dB pad

extruding from the Power input.

2.5 Press the “Zero” button on the 437B.

2.6 Wait for Zeroing operation to complete.

2.7 Press “Shift-Zero” to enter the Cal value. This is listed as CF on

the Power Sensor.

2.8 Wait for Cal operation to complete.

2.9 Press “Shift-Freq” to enter the Cal Factor. This is listed as Cf in a

chart vs. freq on the Power Sensor. Choose the closest frequency range for the application. For 800MHz measurements, interpolate between 1.0GHz and 0.5GHz to obtain a Cf of 99.0

2.10 For measurement of iDEN or Tornado 6:1 waveforms, press

“Offset” and enter 7.78dB.

3. Disconnect Cable A (see Figure 7 on page -60) from the Base Radio and

connect it to the Power Sensor Head.

4. Increase the power level on the R2660 until the HP 437B Power Meter reads

-50dB.

5. Record the DISPLAYED power level of the R2660 as Calfactor A.

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Generation 2 Single Channel BR Station Verification Procedures

6. The path loss through the cable and splitter system is Calfactor A + 50.

Example: R2660 reads -44dBm

HP 437B reads -50dBm

Calfactor A = -44, path loss = 6dB

7. Path loss must be determined for each Antenna cable A,B,C (see Figure 7 on

page -60). If comparable cables are used for all three, the path losses of all three should be the same.

8. Additional power will be added to the R2660 in the sensitivity measurement

to balance out the additional path loss value.

9. Reconnect cables A,B,C (see Figure 7 on page -60) to Antenna Ports 1,2,3.

10. Set the R2660 to Frequency 810MHz and a Power level of -108dBm + path

loss.

Example: If your path loss was 6dB, set the R2660 to

-102dBm.

11. Using the MMI commands below, issue the command to put the BR into

single branch mode. If the resulting bit error rate for receiver branches 1, 2, and 3 is less than 8.00%, the receiver has passed the test.

ﬁeld> ppc -orxch1 -mchn -s1 ﬁeld> freq -orxch1 -f810

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr1 -son ﬁeld> ppr -orxch1 -a100 -r1

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -dbr2 -son ﬁeld> ppr -orxch1 -a100 -r1

(skip this step if the system is conﬁgured for 2 Branch Diversity)

ﬁeld> enable -orxch1 -soff ﬁeld> enable -orxch1 -db3 -son ﬁeld> ppr -orxch1 -a100 -r1

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Generation 2 Single Channel BR Station Verification Procedures

12. Enter the command to return all active alarms of the Base Radio. At the

prompt, type:

ﬁeld> alarms -ofault_hndlr

NOTE

If the command displays alarms, refer to the System Troubleshooting section for corrective actions.

13. As shown below respectively for 800 MHz Generation 2 Base Radios, the

following command returns the kit numbers of the receiver and all other modules. At the prompt, type:

ﬁeld> fc –oplatform

Equipment Disconnection

Disconnect equipment after verifying the receiver as follows:

1. Remove power from the Base Radio by setting the Power Supply rocker

switch (located behind the front panel of the Power Supply) to the OFF (0) position.

2. Disconnect the RS-232 cable from the connector on the service computer.

3. Disconnect the other end of the RS-232 cable from the RS-232 connector on

the front panel of the BRC.

4. Disconnect the test cable from the RX 1 connector located on the backplane

of the Base Radio.

5. Connect the standard equipment cable to the RX 1 connector.

6. Disconnect the cable to the R2660 Communications Analyzer.

7. Restore power to the Base Radio by setting the Power Supply rocker switch

to the ON (1) position.

This completes the Receiver Veriﬁcation Procedure for the receiver.

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Generation 2/EBRC Single Channel Base Radio Backplane

Backplane Signals

Table 3 provides a list of all signals routed on the backplane interconnect board.

Table 3 BR Backplane Signal Descriptions

Signal Description

GND Station Ground

28.6 V 28.6 VDC Output from PS

14.2 V 14.2 VDC Output from PS

5.1 V 5.1 VDC Output from PS

A0, A1, A2, A3, A4, A5, A6** The BRC uses these lines to address station modules and devices on those modules

SPI_MOSI Serial Processor Interface- Master out, slave in Data

SPI_MISO Serial Processor Interface- Master in, slave out Data

SPI_CLK Serial Processor Interface- Clock Signal (100 KHz- 1MHz)

ACG1, ACG2, ACG3, ACG4 BRC uses these lines to set digital attenuators on the receiver(s) for SGC functionality

2.1MHZ_RX 2.1 MHz generated on the BRC and used as a reference by the Receiver(s)

2.1MHZ_TX 2.1 MHz generated on the BRC and used as a reference by the Exciter

DATA1, DATA1* This differential pair carries Receiver 1 data to the Base Radio Controller

DATA2, DATA2* This differential pair carries Receiver 2 data to the Base Radio Controller

DATA3, DATA3* This differential pair carries Receiver 3 data to the Base Radio Controller

ODC_1, ODC_2, ODC_3 Clocks used to clock differentiual receive data from each respective receiver to the BRC

SBI_1,S BI_2, SBI_3 Serial Bus Interface - these lines are used to program the custom receiver IC oin each

receiver

SSI, SSI* Differentiual transmit data from the Exciter to the BRC

CLK, CLK* Differential Data clock used to clock transmit data from the BRC to the Exciter

VBLIN Programmable bias voltage generated on the Exciter and used to bias PA stages

RESET* Output from BRC to Exciter

EXT_VFWD DC voltage representing the forward power at the antenna as measured by the external

watt meter

EXT_VREF DC voltage representing the reﬂected power at the antenna as measured by the external

watt meter.

WP* Write protect line used by the BRC to write serial EPROMs located on each module

BAT_STAT Binary ﬂag used to signal BRC to monitor the External battery supply alam

METER_STAT Binary Flag used by the BRC to indicate to the BRC it should monitor

PA_ENABLE* The BRC uses this line to control PA bias.

1PPS Global Positioning System- 1 pulse per second (this may be combined with 5 MHz at the

site frequency reference)

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