SPECTRIAN MCPS4080 SERIES MCPA MultiCarrier Amplifier Systems INSTALLATION & OPERATION MANUAL December 2001 Rev 1.
Introduction 2001 Spectrian Corporation. This document contains proprietary information of Spectrian Corporation . No part of this manual may be copied or disclosed without written authorization of Spectrian Corporation. All rights reserved. ii MCPS4080 Operations Manual 2001 Spectrian Corporation. All rights reserved.
Introduction TABLE OF CONTENTS 1 2 Introduction....................................................................................................................................1 1.1 About this Manual...................................................................................................................1 1.2 Safety Information...................................................................................................................2 1.3 Introduction to the MCPS4080 Family........
Introduction 4.4 5 Power Up the MCPS4080......................................................................................................20 MCPS4080 System Monitoring.....................................................................................................21 5.1 Introduction............................................................................................................................21 5.2 Monitoring the MCPS4080 System Operation.............................................
Introduction 1 Introduction Chapter 1 introduces the MCPS4080 Series of Multi Carrier Power Amplifier (MCPA) Systems. It describes structure of this manual and introduces the different MCPS4080 Series amplifiers. 1.1 About this Manual The following manual describes how to install, operate, and maintain the MCPS4080 series of amplifiers. It is arranged into the following sections.
Introduction Throughout this manual, notes, cautions and warnings are used with this convention: ✎ ☛ ! Note: Sub-optimal or out-of-specification performance will result from not following the instructions presented in ‘notes’. Caution: Follow ‘caution’ notes to avoid possible damage to equipment. Warning: Injury to personnel, equipment fire, or other hazardous situations will result from not properly following ‘warning’ instructions. 1.1.
Introduction 1.3 Introduction to the MCPS4080 Family The MCPS4080 is a modular, ultra-linear PCS-frequency amplifier system providing up to 290 Watts (total) of output power. Designed for maximum flexibility and reliability, the MCPS4080 can increase the range and capacity of new or existing base stations. Modulation Formats The MCPS4080 can amplify any number of signal carriers using IS-136 TDMA, IS-136HS GSM, IS-136HS EDGE, or IS-95 CDMA modulation up to the maximum rated system output power.
Introduction qualified service technicians, greatly reducing service shipping costs and turnaround time. 1.3.1 MCPA Module Functional Description To achieve the high level of linearity required to support multiple PCS carriers at the minimum cost, the RF modules in the MCPS4080 use a single loop feedforward correction architecture with two amplification paths – the main path, containing the main amplifier, and the error path, containing the error amplifier.
Introduction and distortion products such that the distortion products cancel. The error loop provides the adjustments and controls necessary to assure that the amplitude, phase and delay of both signals result in the desired cancellation. 1.3.1.3 Amplifier Management The Amplifier Management Unit (AMU) monitors and controls performance of the various subassemblies within the RF module. The AMU provides operating status information via front panel LEDs.
Introduction The standard MCPS4080 configurations are summarized in Table 1. Please consult the factory or Spectrian sales for configurations not listed here. Power Dimensions Comments (W x D x H) 80-100W 23” x 20” x 3 RU Single module configuration in 23 in. housing 145W to 290 W 21” x 20” x 8 RU 2 to 4 modules combined in 21 in.
Planning and Preparation 2 Planning and Preparation 2.1 Installation Planning It is important to ensure proper planning and site preparation is complete prior to beginning the installation of the MCPS4080. The following sections describe installation considerations and the information required before beginning the installation procedure. Spectrian Applications Engineering is always available to assist with planning for the installation of the MCPS4080. 2.
Planning and Preparation with viewing the status LED indicators on the front panel. The MCPS4080 should be oriented or shielded so that direct sunlight does not fall upon the front panel. Fire Protection Spectrian recommends that the MCPS4080 installation site be equipped with smoke detectors and an automatic fire-extinguishing system. In addition, for personnel safety, the site should be equipped with a portable halon or CO2 fire extinguisher.
Planning and Preparation 2.2.3 Cable Connections DC Power Supply The MCPS4080 requires customer-supplied connections to the site +27 VDC power supply. The MCPS4080 is normally connected to the power supply with a separate connection for each RF module; a single connection to each shelf is also possible using the optional shelf power bus. Table 2 shows the required current and recommended power service for MCPS4080 systems with the indicated number of active amplifier modules installed in a system shelf.
Planning and Preparation Radio Parameters To set up the MCPS4080, the installer must know the following radio parameters for the MCPS4080 installation. • Total Planned Output Power • Number of CDMA Frequency Assignments and power of each FA • Number of /TDMA/GSM/EDGE Channels and power of each channel • Planned System Gain Installation Equipment Refer to the Tools and Materials listing in the following sections for the required MCPS4080 installation and test supplies. 2.
Planning and Preparation RF Drive Power Worksheet A) Total output power (POUT ) required = W dBm B) Determine total output required for each fully loaded CDMA Frequency Assignment (FA): # of FA’s = total power per FA = total CDMA power (PCDMA) = Total available analog power (PAN ) = W (PAN = POUT – PCDMA) D) Total # of channels, including setup (#ch) = E) Maximum per channel output power (PAN/ch) = (PAN/ch = PAN/# of channels) F) System Gain (Gain) * = G) Maximum composite input power (PIN) =
Planning and Preparation 1. Key-on all channels at one time, including any CDMA F.A.s, and measure input power. 2. If the average composite input power exceeds the calculated average composite input power (line H), readjust all channels as necessary to ensure average input power remains less than or equal to specifications. Turn off all channels. The drive power is now set properly. 2.
Planning and Preparation Tools • Box knife • Pair of large scissors • Inspection flashlight or lamp • Pen or pencil • Strap cutter • Straight-blade screwdriver Other Materials • A copy of the Purchase Order • A copy of the Packing List Unpack equipment 1. Open the shipping container(s) and inspect the contents. Using the required safety equipment and tools, carefully cut the metal and/or nylon straps that surround the shipping containers.
MCPS4080 Installation 3 MCPS4080 Installation 3.1 Introduction The following section describes how to install the MCPS4080 series amplifier in a base station. Each MCPS4080 system features rear-access RF input and output connectors, a DC voltage input receptacle, and a front-access RS-232 status interface connector. Additional optional features include a rear-access RS-422 serial interface connector and a remote alarms interface connector.
MCPS4080 Installation • Cable Cutter (Klein 63050) • Flat and Phillips screwdrivers • Adjustable wrench • ESD protective wrist strap • Inspection lamp or flashlight • Crimping tool (T & B TBMS or equivalent) • Digital Volt Meter (DVM) • Torque Driver (Mountz TLS1360 or equivalent) • Current Meter • Wire Strippers (Greenlee 45109 or equivalent) Materials • Pressurized can of spray-on contact cleaner • Rack-mounting hardware and fasteners • DC Power, RF, and signal cables • Crimp-on
MCPS4080 Installation 4. Unpack the MCPS4080 shelf and record its serial number. Ensure the shelf is in the proper upright vertical orientation and slide it onto the mounting rails. 5. Use the supplied mounting screws to attach the shelf to the rack. Tighten rack-mounting screws securely. 3.3.2 Install Modules in Shelf 1. Unpack each RF module. Align each module with the guides in an amplifier slot and slide the module as far as possible into the shelf, making sure the module is fully seated.
MCPS4080 Installation with local building codes and industry practice. Refer to Table 2 for the recommended power supply circuit and wire sizing for each option. ! ☛ WARNIN, Do not perform DC lead installation with energized leads. Ensure that the DC power supply is OFF for all installation activities! 1. Locate the positive and negative terminals on the customer-provided DC power source, and verify polarity with a DVM. 2. Locate the power supply lugs at the back of the switched combiner assembly.
MCPS4080 Installation 3. Screw the male cable connector firmly onto the female RF output connector of the MCPS4080. 4. Locate the male input RF connector on the end of the coaxial cable from the RF signal source. Inspect the connector for damage or irregularity, and fix any problems with the cable or connector before proceeding. 5. Locate the female SMA connector labeled “RF INPUT” on the rear of the MCPS4080. 6. Screw the male cable connector firmly onto the MCPS4080 female connector. 3.4.
System Start-Up 4 System Start-Up 4.1 Introduction This section contains instructions on powering up the MCPS4080 amplifier system. These procedures should be followed after installing the MCPS4080 amplifier system in the rack. 4.2 Safety Information and Tools To avoid injury, installers, technicians, and maintenance personnel must follow Spectrian's recommended procedures and observe safety precautions. ! ! ✎ Warning: The MCPS4080 should only be operated by trained and qualified personnel.
System Start-Up 4. ! If used, verify that the MCPS4080 address is set correctly. WARNING: The RF output of the MCPS4080 should be connected to a 50-ohm load before DC power is turned on. The load must be capable of dissipating at least 290 watts average power and 3,750 watts of peak power. After mechanical and electrical installation tasks are complete, the MCPS4080 is ready for power-on check. 4.
MCPS4080 System Monitoring 5 MCPS4080 System Monitoring 5.1 Introduction This section describes methods for monitoring the MCPS4080 amplifier system operation. 5.2 Monitoring the MCPS4080 System Operation The MCPS4080 Amplifier Management Module (AMM) has a front panel RS-232 status port. This port provides the option to monitor the operation and status of the MCPS4080 using a laptop computer, if desired. A LabView-based Graphical User Interface (GUI), which can run on Windows95, 98, or NT4.
MCPS4080 System Monitoring 5.3.1.3 Major Alarm A major failure or a condition exists that could result in damage. The MCPS4080 is automatically taken out of service. Immediate service attention is required. 5.3.2 Alarm Responses The fault management system automatically responds when a fault is detected. Responses vary in impact from alarm notification with no subsequent action (for minor faults) to alarm notification and shut-down (for critical faults).
MCPS4080 System Monitoring 5.4 MCPS4080 Alarm Limits and Protection Circuits The MCPS4080 series of multi-carrier power amplifiers has a wide range of alarm configurations available. These may be specified to meet the demands of specific applications. In addition, the MCPA modules have built-in protection circuits to prevent damage from unintentional misuse. Module alarms may be summarized and reported to a BTS using a customized interface.
MCPS4080 System Monitoring 5.4.2 MCPA Module Alarms The set points, delay, reset points, and latching conditions of all three types of alarms are software configurable. Some Minor alarm settings can be specified by the customer but must be agreed upon between the customer and Spectrian prior to installation or modification. Alarm limits for Major and Critical Alarms are fixed and can not be modified, insuring long term reliability of the MCPA module.
MCPS4080 System Monitoring MCPA Alarm Condition Amplifier System Status Summary Logic Minor At least one module reporting a minor alarm OR Major At least 3 modules reporting a critical alarm AND Table 6: Typical MCPS System Alarm Hierarchy MCPS4080 System Operation 2001 Spectrian Corporation. All rights reserved.
Troubleshooting and Maintenance 6 Troubleshooting and Maintenance 6.1 Introduction The following chapter provides basic information about diagnosis of problems with the MCPS4080. Please read the following safety information prior to beginning diagnosis and repair actions. ! ✎ Warning: Troubleshooting and repairs should be performed only by trained and qualified personnel or at authorized Spectrian repair depots.
Troubleshooting and Maintenance cautious in handling test leads, tools, and equipment near live circuits. Never reach into an enclosure for the purpose of servicing or adjusting live equipment. 6.2 Troubleshooting Refer to section 5.3 for a definition of alarm types and the significance of those alarm types. 6.2.1 Using LED Indicators Each MCPS4080 RF Module is equipped with four LED indicators mounted on the front panel. The system Alarm Management Module has two LED indictors mounted on the front panel.
Troubleshooting and Maintenance 6.3 Periodic Maintenance 6.3.1 Dust Removal Keep the air inputs and outputs of the MCPS4080 free of dust or other material that could block cooling airflow. 6.3.2 Visual Inspection Periodically visually inspect the MCPS4080 to ensure that all indicators are functioning normally and that all system interfaces are properly connected. 6.
Troubleshooting and Maintenance 5. Slide the new AMM into the shelf sub-assembly. 6. Fasten the AMM front panel fastener. 7. Turn on the DC power to the MCPS4080. The system will perform a powerup self-test automatically. 8. The POWER LED will be GREEN. 6.4.3 Replacing shelf subassembly ! ! ☛ ! ✎ Warning: Turn off the DC voltage and RF power prior to replacing an MCPS4080. Warning: Remove all DC and RF connectors prior to removing the MCPS4080 from the rack.
Troubleshooting and Maintenance 30 5. Unfasten the 4x captive retaining nuts & remove the fan module. 6. Fasten replacement module in place using the 4x captive nuts. 7. Connect the fan power cable. 8. Replace the RF module in the rack. 9. Enable the module. Following the automatic power-up reset sequence, the FAN indicator LED should be GREEN. MCPS4080 Operations Manual 2001 Spectrian Corporation. All rights reserved.
Appendix A1 Spectrian, Inc. Offices Appendix A1 Spectrian, Inc. Offices Spectrian Headquarters 350 West Java Drive Sunnyvale, Calif. 94089 Ph: Fax: 408-745-5400 408-541-0263 Web: www.spectrian.com Spectrian, Asia Office 4TH FL., Ensung Building, 601-18, Yoksam-Dong, Kangnam-Ku, Seoul, 80-080, Korea Ph: Fax: 822-545-6441 822-545-6062 Centralized customer service: For customer service support please direct all requests, questions, comments, and inquires to cs@spectrian.
Appendix A2 Major Electrical Specifications Appendix A2 Major Electrical Specifications Major Equipment Specifications for the MCPS4080 Amplifier System Electrical Specifications Frequency Range Average Power¹ into 50 Ohms Specification @ 25ºC 1930 - 1990 MHz 80W (49.0 dBm) typical, 100W (50.0 dBm) max. Intermodulation Distortion (IMD) -63 dBc with TDMA IS-136, CDMA Adjacent Channel Power2 < -45 dBc, 885 KHz offset, 30 KHz res bandwidth @ 1960 MHz, 100W Output < -60 dBc, 1.
Appendix A3 Major Mechanical Specifications Appendix A3 Major Mechanical Specifications Mechanical Specifications Operating/Storage Temperatures Size, 4 module shelf (Excludes mounting ears and handles). 0ºC to 50ºC/-40ºC to 85ºC (D x W x H) 19.7 x 19.7 x 21.0 in. max (500 x 500 x 533 mm max.) Size, 1 module shelf (Excludes mounting ears and handles). 19.7 x 21.7 x 5.25 in. max (500 x 550 x 133. mm max.) Weight, 4 module shelf (Empty) Installed: approx. 45 lbs (20 kg) Shipping: approx. 60 lbs max.
Appendix A3 Major Mechanical Specifications Mechanical Outlines MCPS4080 Shelf Configuration 34 MCPS4080 Operations Manual 2001 Spectrian Corporation. All rights reserved.
Appendix A3 Major Mechanical Specifications MCPA Module for MCPS4080 Family MCPS4080 System Operation 2001 Spectrian Corporation. All rights reserved.
Appendix A4: MCPS4080 System Checkout Appendix A4: MCPS4080 System Checkout MCPS System Checkout In some cases, it may be desirable to perform a system checkout prior to installation to insure proper operation. The following procedure is included here only for reference. Accurate specification verification is not guaranteed when using this procedure.
Appendix A4: MCPS4080 System Checkout Performance Checkout Procedure 1. Set current limit on Sorenson power supply to appropriate level as listed in Table 2. 2. Set DC voltage to 27 ± 1V. 3. With no RF applied, verify that idle current is approximately 13A x number of MCPA RF modules. 4. Apply RF signal, and slowly increase power to maximum rated power as listed in Appendix A2. 5. Verify that the total DC current is approximately that listed in Table 2. 6. Perform ACPR measurement.
INDEX 7 INDEX acoustic treatment airborne dust air-conditioning alarm configurations alarm connection Alarm Definitions alarm output connection alarm/protection hierarchy ambient noise AMM installation replacement Amplifier Management Module Amplifier Management Unit Amplifier System Alarms AMPS modulation AMU Analog Protection Circuit summary table Analog Protection Circuits average power rated Block Diagram RF module building codes bussed power option DC power cabinet clearance cancellation Caution defin
INDEX Graphical User Interface ground halo site grounding system site guides module alignment hot air exhaust hot-swappable RF modules input drive level worksheet installation verify installations intended Introduction IS-136 TDMA IS-95 lighting working area lightning arrestors lightning protection main loop major faults definition MCPS address setting Mechanical Outlines minor faults definition Module Alarm Hierarchy table module alarms summarized Module Alarms Module Replacement multimodule MCPA Note defi
INDEX smoke detectors summarized alarms uncrating unrestricted airflow 40 8 23 12 8 vibration Warning definition weight wrist strap 8 2 7 13, 15 MCPS4080 Operations Manual 2001 Spectrian Corporation. All rights reserved.
