Power wave Base Station Solutions G3L 850-180 MCPA INSTALLATION AND SERVICE MANUAL 044-05454 Rev.
© 2011 Powerwave Technologies Incorporated. All rights reserved. Powerwave Technologies, and the Powerwave logo are registered trademarks. This Powerwave product is intended only for installation in a RESTRICTED ACCESS LOCATION and this Powerwave product is designed to operate within the normal operating (typical operating) ranges or conditions specified in this document. Operation of this equipment beyond the specified ranges in this document may cause: 1.
G3L-850-180 Warnings, Cautions, and Notes Warnings, Cautions, and Notes Warnings, Cautions, and Notes are found throughout this manual where applicable. The associated icons are used to quickly identify a potential condition that could result in the consequences described below if precautions are not taken. Notes clarify and provide additional information to assist the user. WARNING: This warning symbol means danger. You are in a situation that could cause bodily injury or death.
G3L-850-180 Warnings, Cautions, and Notes Revision Record Revision Letter A 044-05454 Rev A Date of Change Reason for Change January 2012 Initial Release ii
G3L-850-180 Table of Contents TABLE OF CONTENTS 1 - Product Description Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G3L-850-180 List of Figures LIST OF FIGURES Figure 1-1 MCPA Front and Rear Views ..................................................................................................1-2 Figure 1-2 MCPA Functional Block Diagram ............................................................................................1-3 Figure 2-1 MCPA Controls and Indicators ................................................................................................2-1 Figure 2-2 MCPA Interface Connector ..............
G3L-850-180 List of Tables LIST OF TABLES Table 1-1. Derating....................................................................................................................................1-5 Table 2-1 MCPA Controls and Indicators ..................................................................................................2-2 Table 2-2 MCPA Alarm States ..................................................................................................................
Chapter 1 Product Description Introduction This manual contains information and procedures for the installation, operation, and maintenance of the G3L850-180 Multi-Carrier Power Amplifier (MCPA). Scope of Manual This manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date.
G3L-850-180 Functional Description STATUS RESET ON OFF PC I/O Rear Front Figure 1-1 MCPA Front and Rear Views 044-05454 Rev A 1-2
G3L-850-180 Functional Description FIRST LOOP SECOND LOOP Pilot Tone First Loop Phase and Gain Delay Filter Main Amplifier Premain Amplifier RF Out RF Sample Pilot Tone Generator RF In Preamp First Loop Control Error Out Second Loop Phase and Gain Delay First Loop Detection Second Loop Control Forward Power / Pilot Tone Detect Reflected Power (VSWR) Controller -5 +15 +9 +5 VDC VDC VDC VDC +27 VDC Error Amplifier System Faults Front Panel Status User Interface LED Control ON/OFF/RESE
G3L-850-180 Cooling The primary function of the second loop is to amplify the error signal to cancel out spurious products developed in the main amplifier. The input signal is amplified by a preamplifier and fed to a coupler and delay line. The signal from the coupler is fed to the attenuator and phase shifter in the first loop. The second loop control section obtains a sample of the distortion added to the output signals by the main amplifiers.
G3L-850-180 Power Distribution Table 1-1. Derating 044-05454 Rev A DC Voltage RF Output Derating 26 VDC to 30 VDC None 25 VDC to 25.9 VDC 1.0 dB 24 VDC to 24.9 VDC 1.5 dB 21.5 VDC to 23.9 VDC 2.0 dB Below 21.
Chapter 2 Controls and Indicators Introduction This chapter contains descriptions of the G3L-850-180 Multi-Carrier Power Amplifier (MCPA) controls and indicators. MCPA Controls and Indicators The location of the MCPA controls and indicators are illustrated in Figure 2-1 and listed with descriptions in Table 2-1.
G3L-850-180 MCPA Controls and Indicators Table 2-1 MCPA Controls and Indicators Controls and Indicators Description Toggle Switch, Three Position RESET (Up) Resets MCPA. LED indicates boot mode (red), then turns solid green ON (Center) Enables MCPA. LED indicates solid green OFF (Down) Disables MCPA.
G3L-850-180 MCPA Controls and Indicators MCPA Connectors The MCPA power, alarm, control, and RF connections are made through a D-sub combination male interface connector located on the rear of the MCPA. Pin assignments are illustrated in Figure 2-2 MCPA Interface Connector and listed in Table 2-3. Alarms are interpreted and generated by the MCPA and reported to the base station as a system level alarm. The PC I/O RJ-11 connector is for factory use only.
Chapter 3 Installation Introduction This chapter contains unpacking, inspection, startup and installation procedures for the G3L-850-180 MultiCarrier Power Amplifier (MCPA). ❑ ❑ ❑ Review this chapter prior to equipment installation. Review any government and local codes applicable to this installation. Read the instructions in this Chapter and Chapter 4 before operating the equipment. Unpacking and Inspection Perform the steps in Table 3-1 to unpack and inspect the MCPA.
G3L-850-180 Initial Start-up and Operating Procedures Table 3-2 Install the MCPA Step Action 1 Set MCPA OFF/ON/RESET switch to the OFF (down) position. 2 Ensure quarter-turn fasteners are in unlocked position. 3 Lift and insert MCPA into the subrack. Turn the quarter-turn fasteners to locked position to secure MCPA into subrack.
Chapter 4 Maintenance Introduction This chapter contains instructions for periodic maintenance, testing and troubleshooting for the G3L-850-180 Multi-Carrier Power Amplifier (MCPA). Periodic Maintenance NOTE Check your sales order and equipment warranty before attempting to service or repair the unit. Do not break the seals on equipment under warranty or the warranty will be null and void.
G3L-850-180 Return For Service Procedures CAUTION: When removing the MCPA from the system, support the MCPA to prevent the rear of the MCPA from suddenly dropping when the guide rail disengages from the track. Dropping the MCPA can damage the rear multi-pin connector. The MCPA weighs approximately 20 lbs. (9.1 kg). Table 4-3 MCPA Removal and Replacement Step Action 1 Set MCPA OFF/ON/RESET switch to OFF (down). 2 Loosen two quarter-turn fasteners that secure MCPA to the subrack.
Chapter 5 Specifications Multi-Carrier Power Amplifier Specifications The performance and physical specifications for the G3L-850-180 MCPA are listed in Table 5-1. . Table 5-1 MCPA Specifications Electrical Specifications/Features Operating Frequency Band 869-894 MHz Instantaneous Bandwidth 25 MHz Air Interface GSM, EDGE, CDMA2000/CDMA, WCDMA, LTE RF Output Power 210 Watts Max, 180 Watts Nominal Maximum Input -4.
G3L-850-180 Industry Canada Table 5-1 MCPA Specifications (Continued) Environmental Specifications/Features Operating Temperature Range -20 ºC. to +50 ºC Storage Temperature -40 ºC. to +70 ºC Operating Humidity, Normal 5% to 95% relative humidity (non-condensing) Storage Humidity 5% to 95% relative humidity (non-condensing) Industry Canada 20dB Gain Bandwidth measurement = 167 MHz: Rated output power = 200 Watts. Input impedance = 50 ohms. Output impedance = 50 ohms.
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