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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.
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Revision Record Revision Letter Date of Change Reason for Change Initial Release Aug 2007 044-05305 Rev A...
Introduction This manual contains information and procedures for the installation, operation, and maintenance of the G3L-1929-160-001 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.
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Functional Description G3L-1929-160-001 MCPA Rear Front Figure 1-1 MCPA Front and Rear Views 044-05305 Rev A...
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G3L-1929-160-001 MCPA Functional Description FIRST LOOP SECOND LOOP Pilot Tone First Loop Delay Premain Main RF Out Phase and Gain Filter Amplifier Amplifier RF Sample Pilot Tone Generator Error Error Out Second Loop RF In Preamp Delay Amplifier Phase and Gain...
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Functional Description G3L-1929-160-001 MCPA Feed-forward Loop Control The primary function of the first loop is to amplify the carrier signals and isolate an error signal for the second loop. It does this by amplifying the carrier signals and isolating an error signal which is passed to the second loop.
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G3L-1929-160-001 MCPA Functional Description Power Distribution The host system provides +26 to 28 VDC power for the MCPA. The DC/DC converter and voltage regulator in the MCPA converts the +27 VDC to +15 VDC, +9 VDC, +5 VDC, and -5 VDC for internal use. The MCPA has no built-in short-circuit protection.
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Functional Description G3L-1929-160-001 MCPA This page intentionally left blank. 044-05305 Rev A...
Chapter 2 Controls and Indicators Introduction This chapter contains descriptions of the G3L-1929-160-001 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.
MCPA Controls and Indicators G3L-1929-160-001 MCPA Table 2-1. MCPA Controls and Indicators Controls and Indicators Description Toggle Switch, Three Position MCPA RESET (Up) Resets . LED indicates boot mode (red), then turns solid green ON (Center) Enables MCPA. LED indicates solid green OFF (Down) Disables MCPA.
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G3L-1929-160-001 MCPA MCPA Controls and Indicators Table 2-2 MCPA Alarm States (Continued) Alarm Definition Alarm type/LED Auto-Recovery Exceed Disables MCPA immediately if Major Auto-recovery when supply voltage Maximum supply DC voltage > +30.5 VDC. (Red) drops to < +29.5 VDC.
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MCPA Controls and Indicators G3L-1929-160-001 MCPA Table 2-3 MCPA Connector Pinouts Function Function RF Input (Coaxial Contact) Summary_Fault +27 VDC (Power Contact) DC (On/Off) Ground (Power Contact) RF Output (Coaxial Contact) TX_H (RS-485) TX_L (RS-485) RX_H (RS-485) RX_L (RS-485) HPE (High Power Enable)
Chapter 3 Installation Introduction This chapter contains unpacking, inspection, startup and installation procedures for the G3L-1929-160-001 Multi-Carrier Power Amplifier (MCPA). • Review this chapter prior to equipment installation. • Review any government and local codes applicable to this installation. •...
MCPA Installation Instructions G3L-1929-160-001 MCPA The modular MCPA can be installed in a variety of systems. All system connections to the MCPA are made through the MCPA rear connector, no additional wiring is required. Perform the steps in Table 3-2 to install the MCPA. Refer to Figure 3-1 for quarter-turn fastener position and switch location.
G3L-1929-160-001 MCPA Initial Start-up and Operating Procedures Initial Start-up and Operating Procedures Perform the MCPA initial start-up per the instructions in Table 3-3. CAUTION: Before applying power, ensure input and output cables are properly terminated at the Duplexer front panel. Do not operate MCPA without a load attached. Excessive input power may damage the MCPA.
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Initial Start-up and Operating Procedures G3L-1929-160-001 MCPA This page intentionally left blank. 044-05305 Rev A...
Maintenance Introduction This chapter contains instructions for periodic maintenance, testing and troubleshooting for the G3L-1929-160-001 Multi-Carrier Power Amplifier (MCPA). Periodic Maintenance NOTE Check your sales order and equipment warranty before attempting to service or repair unit. Do not break seals on equipment under warranty or warranty will be null and void. Do not return equipment for warranty or repair service until proper shipping instructions are received from factory.
Insert MCPA into subrack. Turn quarter-turn fasteners to locked position to secure MCPA. Return for Service Procedures When returning products to Powerwave, the following procedures will ensure optimum response. Obtaining an RMA A Return Material Authorization (RMA) number must be obtained prior to returning equipment and to reduce delays in receiving repair service.
Chapter 5 Specifications Multi-Carrier Power Amplifier Specifications The performance and physical specifications for the G3L-1929-160-001 MCPA are listed in Table 5-1. Table 5-1. MCPA Specifications Electrical Specifications/Features Operating Frequency Band 1930-1995 MHz Instantaneous Bandwidth 65 MHz Air Interface CDMA, CDMA-2000, 1X-EVDO RF Output Power 160 W Max.
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Alarm Indication LED; Green (normal), Yellow (minor alarm), Red (Major alarm). Platform Compatibility G3L-1929-160-001 will reduce power level to G3L-1929-120 levels if placed in a G3L-1929-120 subrack. PA will perform at rated power levels with Software upgrade for subrack. RF Input / Output / Status / Alarm / 21-pin D-subminiature combo connector.
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