B A S E S T AT IO N S O L U T I O N S
DRAFT
M C P A
I N S T A L L AT I O N A N D S E R V I C E M A N U A L
0 4 4 - 0 5 3 6 9 R E V . A M A Y 2 0 0 9
G 3 L - 2 1 2 9 - 1 4 0
© 2009 Powerwave Technologies Incorporated. All rights reserved.
DRAFT
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. Spurious emissions that violate regulatory requirements.
2. The equipment to be automatically removed from service when maximum thresholds are exceeded.
3. The equipment to not perform in accordance with its specifications.
It is the operator’s responsibility of the operator to ensure this equipment is properly installed and
operated within Powerwave operating specifications to obtain proper performance from the equipment
and to comply with regulatory requirements.
For PERMANENTLY CONNECTED EQUIPMENT, a readily accessible disconnect device shall be
incorporated in the building permanent wiring.
Warnings, Cautions, and Notes
DRAFT
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. Before working on any equipment, be aware of the hazards involved with electrical and RF circuits and be familiar with standard practices
for preventing accidents.
CAUTION: The caution symbol means reader be careful. In this situation, the user might do
something that could result in equipment damage or loss of data.
NOTE: The note symbol means reader take note. Notes contain helpful suggestions or references to
material not covered in this document. Procedures are not contained in notes.
044-05369 Rev A i
Revision Record
DRAFT
Revision Letter Date of Change Reason for Change
A May 2009 Initial Release
ii 044-05369 Rev A
Table of Contents
DRAFT
Warnings, Cautions, and Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Revision Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Product Description
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Preamplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Main and Error Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Feed-forward Loop Control Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Pilot Tone Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Controls and Indicators
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
MCPA Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
MCPA Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
MCPA Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Installation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Damaged Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Air Conditioning Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
MCPA Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Initial Start-up and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Maintenance
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
MCPA Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
MCPA Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Return For Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Obtaining An RMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Repackaging for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Specifications
Multi-Carrier Power Amplifier Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
044-05369 Rev A iii
List of Figures
DRAFT
2-1 MCPA Front and Rear Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2-2 MCPA Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
3-1 MCPA Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3-2 MCPA Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
4-1 MCPA Quarter-turn fasteners and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
List of Tables
2-1 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2-2 MCPA Alarm States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2-3 MCPA Connector Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
3-1 Unpacking Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3-2 MCPA Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3-3 MCPA Start-up Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4-1 Periodic Maintenance Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-3 MCPA Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
5-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
iv 044-05369 Rev A
G3L-2129-140 MCPA Introduction
DRAFT
Chapter 1
Product Description
Introduction
This manual contains information and procedures for the installation, operation, and maintenance of the
G3L-2129-140 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. Changes which
occur after the printing date may be incorporated by a complete manual revision or alternatively as additions.
The manual is organized into the following chapters:
Chapter 1 - Product Description
Chapter 2 - Controls and Indicators
Chapter 3 - Installation
Chapter 4 - Maintenance
Chapter 5 - Specifications
Product Description
The MCPA shown in Figure 1-1 MCPA Front and Rear Views is a linear, feed-forward multi-carrier power
amplifier that operates in a 60 MHz frequency band from 2110 MHz to 2170 MHz with an instantaneous
bandwidth of 45 MHz. The instantaneous bandwidth is the maximum frequency band in which any two or more
signals can occupy. The instantaneous bandwidth of the MCPA is set automatically.
The MCPA is modular in design and ideally suited for use in CDMA, W-CDMA, and LTE base stations. The
MCPA provides a gain of 63 dB to supply a 140 watt output. Refer to Figure 1-2 MCPA Functional Block
Diagram for the MCPA functional block diagram. Refer to Chapter 5 for the MCPA specifications.
Functional Description
The MCPA is a self-contained module typically operated in parallel with other identical MCPAs as part of a
subrack assembly.
The MCPA consists of the following major functions:
❑ Preamplifier
❑ Main and error amplifiers
❑ Feed-forward loop control circuits
❑ Pilot tone generator
❑ Controller
044-05369 Rev A 1-1
Functional Description G3L-2129-140 MCPA
Figure 1-1 MCPA Front and Rear Views
Front
Rear
DRAFT
1-2 044-05369 Rev A
G3L-2129-140 MCPA Functional Description
Figure 1-2 MCPA Functional Block Diagram
DRAFT
RF In
Preamp
Pilot Tone
Pilot Tone
Generator
FIRST LOOP
First Loop
PhaseandGain
First Loop
Control
VDC VDC VDCVDC
SECOND LOOP
Reflected
Delay
Filter
Error
Amplifier
Power
RF Out
(VSWR)
Premain
Amplifier
RF Sample
Controller
User
Interface
Second Loop
Phase and Gain
System
Faults
Delay
First Loop
Detection
-5
+5+9+15
+27 VDC
Main
Amplifier
Second Loop
Control
Status
Control
Error Out
Forward Power / Pilot Tone Detect
Front Panel
LED
ON/OFF/RESET
Switch
Preamplifier
The carrier (RF In) is applied to the input port of the MCPA and fed to the preamplifier stage where it is amplified
using two stages of class A mode amplifiers. The output of the preamplifier is split into two paths, one to the
main amplifier and one to the error amplifier.
Main and Error Amplifiers
The main amplifier provides the balance of gain and power in the 2110 MHz to 2170 MHz frequency band,
using class AB amplification for maximum efficiency. The error amplifier and feed forward loops correct signal
non-linearities introduced by the class AB main amplifier.
In the error amplifier, which operates in class A mode, the RF signal is coupled to an attenuator and phase
shifter in the first feed-forward loop, phase shifted by 180 degrees and then amplified in the premain amplifier.
The output from the pre-main amplifier is fed to the class AB main amplifier and then sampled using a coupler.
The signal (RF sample) is combined with the main input signal and input to the second feed-forward loop.
There, the RF sample is attenuated, phase shifted 180 degrees, and fed to the error amplifier where it is
amplified to a level identical to the sample output from the main amplifier. The output from the error amplifier
(Error Out) is coupled back and added to the output from the main amplifier, with the control loops continuously
making adjustments to cancel out any distortion in the final output signals.
Feed-forward Loop Control Circuits
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. The first loop control section phase shifts the main input signals by 180 degrees and constantly monitors
the output for correct phase and gain.
044-05369 Rev A 1-3
Cooling G3L-2129-140 MCPA
DRAFT
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. The signal is phase shifted 180 degrees, then fed to the error amplifier where it is amplified to the
same power level as the input sample. The signal is then coupled to the main amplifier output. The final output
is monitored by the second loop and adjusted to ensure that the signal distortion and intermodulation distortion
on the final output is cancelled out.
During routine operation, all normal variations are automatically compensated for by the feed-forward loop
control. If large variations occur beyond the adjustment range of the loop control, the controller shuts down the
MCPA RF section and a loop fault is reported to the system.
Pilot Tone Generator
The pilot tone is an internally generated signal with a predetermined frequency, phase, and amplitude is known.
If the pilot signal is suppressed at the amplifier output, then the distortion created by the main amplifier is also
suppressed.
The pilot tone signal is injected into the first loop and detected at the feedforward output of the second loop. The
pilot tone is coupled off of the main amplifier creating a second pilot tone that is attenuated and phase shifted
180 degrees to be used as the reference. The second pilot tone is amplified in the error amplifier and mixed with
the signals from the main signal path.
The first and second pilot tones should cancel each other out in an ideal situation. If the output detector senses
that the pilot tones do not cancel each other out, the information feeds back to control the gain and phase of
both the main and error amplifier paths minimizing output distortion.
Controller
The controller constantly compares the active RF paths with internal references for dynamic correction of small
variations through the RF feedback control circuits to maintain constant gain, and also provides the alarm
monitoring and control for the MCPA.
A front panel mounted tri-color LED provides MCPA operational status to the local operator. The OFF/ON/
RESET switch allows the operator to power on, power off or reset the MCPA. System faults are sent to a remote
location through the user interface.
Cooling
The MCPA components are mounted on a heatsink and cooled by forced air flowing over the heatsink fins.
System fans draw external air through the MCPA front panel inlet and exhaust air through the MCPA rear panel
outlet. The internal temperature is monitored to keep the MCPA within the specified operating temperature.
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.
The MCPA operates at full power if the system DC supply is within 26 to 30 VDC. The MCPA shuts down if the
applied DC power is less than 20.5 VDC or greater than 30.5 VDC.
1-4 044-05369 Rev A
Chapter 2
Multi-color
OFF/ON/RESET Switch
LED Status Indicator
DRAFT
Controls and Indicators
Introduction
This chapter contains descriptions of the G3L-2129-140 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.
Figure 2-1 MCPA Controls and Indicators
Table 2-1 LED Indicators
Controls and Indicators Description
Toggle Switch, Three Position
RESET (Up) Resets MCPA. LED indicates boot mode (red), then turns solid
ON (Center) Enables MCPA. LED indicates solid green
OFF (Down) Disables MCPA. LED Indicates solid red
LED, Status
Green (solid) RF enabled, OFF/ON/RESET switch set to On (center position),
Green (blinking) Standby
Yellow (solid) Minor Alarm - APC function enabled
Yellow (blinking) VSWR Warning
Red (solid) Major alarm - Critical fault present.
Red/Yellow (alternating) Downloading. Do not interrupt power.
green
normal operation, no alarm
044-05369 Rev A 2-1
MCPA Controls and Indicators G3L-2129-140 MCPA
DRAFT
MCPA Alarms
MCPA alarm conditions are reported to the system as logic level signals through the rear connector. The front
panel LED provides a visual reference for the operator of MCPA status. Refer to Table 2-1 for a listing of LED
status. Refer to Table 2-2 for a listing of Alarm states.
Table 2-2 MCPA Alarm States
Alarm Definition Alarm type/LED Auto-Recovery
Output
Overpower
Automatic
Power Control
(APC)
Input
Overdrive
Disables MCPA immediately if
output power is >+2 dB over rated
output RF power.
Enabled if output power is > 52.17
dBm.*
Disables MCPA immediately if input
RF drive is >-5 dBm
Major
(Red)
Minor
(Yellow)
Major
(Red)
Input power decreases below APC
threshold (-11.2 dBm)
MCPA auto-recovers when output
power drops below rated maximum
output power.
Input power decreases below APC
threshold (-11.2 dBm)
High
Temperature
High Reverse
Power
Exceed
Maximum
Voltage
Below
Minimum
Voltage
Loop Fail
(Linearization
Alarm)
Internal DC
Fail
Device Fail Alarm if one or more output power
*Note: If MCPA cannot compensate gain to maintain compliance, Output Overpower or Input Overdrive faults protect
MCPA.
Disables MCPA if sensor
temperature is > +95° C.
Disables MCPA if the reverse RF
output power is higher than 49 dBm
for a duration of 1-minute.
Disables MCPA immediately if
supply DC voltage > +30.5 VDC.
Disables MCPA immediately if
supply DC Voltage < +20.5 VDC
Disables MCPA if loop convergence
fails.
Alarm if internal voltages fail or out
of range.
devices fail.
Major
(Red)
Minor (Yellow)
during 1minute
validation
period then
changes to
Major (Red)
Major
(Red)
Major
(Red)
Major
(Red)
Minor
(None)
Minor
(None)
MCPA auto-recovers when sensor
temperature drops to less than +85
°C.
Reverse power must be < 48.3 dBm.
Auto-recovery when supply voltage
drops to < +29.5 VDC.
Auto-recovery when supply voltage
increases to >+24.0 VDC
Auto-recovery when loop converges.
MCPA tries to auto recover ten times
before permanent shut down. Two
minutes and 5 seconds for each try.
Auto-recovery once voltage is within
range. No shutdown until linearization
alarm occurs.
No auto-recovery. No shutdown until
linearization alarm occurs.
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 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 on the front of the MCPA is for factory use only.
2-2 044-05369 Rev A
G3L-2129-140 MCPA MCPA Controls and Indicators
123
A1
A2
A3
A4
456789
10 11 12 13 14 15 16 17
DRAFT
Figure 2-2 MCPA Interface Connector
Table 2-3 MCPA Connector Pin Assignments
Pin Function Pin Function
A1
A2
A3
A4
1
2
3
4
5
6
7
RF Input (Coaxial Contact)
+27 VDC (Power Contact)
Ground (Power Contact)
RF Output (Coaxial Contact)
TX_H (RS-485)
TX_L (RS-485)
GND
RX_H (RS-485)
RX_L (RS-485)
GND
MOD_DET (Module Detection)
10
11
12
13
14
15
16
17
8
9
Summary_Fault
DC (On/Off)
NC
NC
NC
NC
NC
NC
HPE (High Power Enable)
NC
044-05369 Rev A 2-3
MCPA Controls and Indicators G3L-2129-140 MCPA
DRAFT
This page intentionally left blank.
2-4 044-05369 Rev A
Chapter 3
DRAFT
Installation
Introduction
This chapter contains unpacking, inspection, startup and installation procedures for the G3L-2129-140 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.
Table 3-1 Unpacking steps
Step Action
1
Carefully open container and remove MCPA.
2
Visually inspect MCPA for damage that may have occurred during shipment.
Check for evidence of water damage, bent or warped chassis, loose screws or
nuts, or extraneous packing material in connectors. If possible, inspect equipment
in the presence of the delivery person.
3
If possible, retain all packing material that can be reused for repackaging
components.
Damaged Equipment
If the MCPA is damaged, a claim should be filed with the carrier when the extent of any damage is assessed.
Contact the factory for a return material authorization (RMA). Refer to Chapter 4 for the return procedure.
Air Conditioning Requirement
The MCPA generates 2770 BTUs of heat at 36 amps, 27 VDC and 140 watts average RF power output. The
MCPA operates within the extended low temperature and high temperature environments as listed in
Chapter 5.
MCPA Installation Instructions
CAUTION: Do not slam the MCPA into the system subrack during installation. Using excessive
force can damage the MCPA interface connector.
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 MCPA Quarter-turn fasteners and Connectors for quarter-turn fastener position and
switch location.
044-05369 Rev A 3-1
Initial Start-up and Operating Procedures G3L-2129-140 MCPA
RF Switch:
RJ-11
Connector
(Factory use only)
Quarter-turn
fastener
RESET
ON
OFF
Quarter-turn
fastener
Interface
Connector
Unlocked
Locked
DRAFT
Table 3-2 MCPA Installation Steps
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.
Initial Start-up and Operating Procedures
Perform the MCPA initial start-up per the instructions in Table 3-3.
3-2 044-05369 Rev A
Figure 3-1 MCPA Quarter-turn fasteners and Connectors
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. Refer to Chapter 5 for input power requirements.
Table 3-3 MCPA Start-up Steps
Step Action
1
Verify all system input and output cables are properly connected.
2
Verify +27 VDC (+/- 1 VDC) supply is available.
3
Set MCPA OFF/ON/RESET switch to ON (center) position.
4
Allow MCPA to warm-up for a minimum of two minutes before taking power
readings.
Chapter 4
DRAFT
Maintenance
Introduction
This chapter contains instructions for periodic maintenance, testing and troubleshooting for the G3L-2129-140
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.
Periodic maintenance requirements for the MCPA are listed in Table 4-1.
Table 4-1 Periodic Maintenance Requirements
Task Interval Action
Cleaning 3 Months Inspect for debris especially around front panel vents. Remove
Performance tests Optional Perform testing in accordance with Paragraph paragraph 6 on
MCPA Performance Tests
MCPA Performance tests are only performed at the factory. Refer to the troubleshooting instructions below.
Troubleshooting
Perform the instructions in Table 4-2 in the case of an MCPA fault or alarm.
Table 4-2 Troubleshooting
Step Action
1 Check for proper DC supply voltage.
2 Set the OFF/ON/RESET switch momentarily to RESET (Up) position.
3 Contact your field representative or the factory if fault does not clear.
dust with a soft cloth/brush or vacuum cleaner
page 1.
044-05369 Rev A 4-1
MCPA Removal and Replacement G3L-2129-140 MCPA
DRAFT
MCPA Removal and Replacement
Perform the instructions in Table 4-3 to remove and replace a MCPA.
CAUTION: Do not slam the MCPA into the system during installation. Using excessive force can
damage the MCPA connector.
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 28.60 lbs.
(12.97 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.
3 With steady even pressure, use handle on front of the MCPA to pull the MCPA out of the
system.
4 To replace MCPA, set MCPA OFF/ON/RESET switch to OFF (down).
5 Turn quarter-turn fasteners to Unlocked position.
6 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. Please contact our Repair Department at (714) 466-1000 to obtain this
number, or FAX your request to (714) 466-5800.
Repackaging for Shipment
To ensure safe shipment of a component, it is recommended that the original packing materials be reused If
this is not possible, use suitable shipping cartons and foam inserts to prevent damage in transit.
4-2 044-05369 Rev A
Chapter 5
DRAFT
Specifications
Multi-Carrier Power Amplifier Specifications
The performance and physical specifications for the G3L-2129-140 MCPA are listed in Table 5-1..
Table 5-1 Specifications
Electrical Specifications/Features
Operating Frequency Band 2110-2170 MHz
Instantaneous Bandwidth 45 MHz
Air Interface CDMA, W-CDMA, LTE
RF Output Power 140 W with crest factor reduced signals CCDF 1e-4 <= 9.0dB
Maximum Input (before shutdown) -5 dBm
Duty Cycle Continuous
BTUs 2770 at 36 Amps, 27 V and 160 W average RF power output
RF Gain 63 dB
Gain Flatness ±0.5 dB (Max.)
Gain Variation over Temperature ±0.5 dB (Max.)
Intermodulation Distortion -62 dBc (Max.)
Harmonics -13 dBm (Max.) 1 MHz Bandwidth; -50 dBc (Max.)
Out of Band Spurious -60 dBc (Max) ITU-R, SM329-9, Category B
Input Return Loss 14 dB (Min.)
Output Return Loss 16 dB (Min.)
Input Voltage Range +26 VDC to 28 VDC nominal; Operational range of 21.0 VDC to 30
DC Current:
(Max @ APC)
(Nominal)
Efficiency
Mechanical Specifications/Features
Controls Three position toggle switch: OFF/ON/RESET.
Alarm Indication LED; Green (normal), Yellow (minor alarm), Red (Major alarm).
Platform Compatibility Everest Power Amplifier (PA) will reduce power level to Harley/
RF Input / Output / Status / Alarm /
Control / DC Input Connector
DImensions 354.6 mm high, 99 mm wide, 499.9 mm deep (including handles)
Weight 12.97 kg (28.5 lbs)
Environmental Specifications/Features
Operating Temperature Range -33 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).
125 W with Gaussian signals CCDF 1e-4 10.5dB
VDC.
MCPA disables at less than 20.5 VDC or greater than+30.5 VDC.
36 Amps at 26 V and 160 W average RF power output.
34.8 Amps at 27 V and 160 W average RF power output.
>17%
Python APC levels if placed in a Harley/Python subrack. PA will
perform at rated power levels with Software upgrade for subrack.
21-pin D-subminiature combo connector.
(13.96” H X 3.9” W X 19.7” D)
044-05369 Rev A 5-1
DRAFT
Worldwide Corporate Headquarters
1801 East St. Andrew Place
Santa Ana, CA 92705 USA
+1 714 466 1000
+1 714 466 5800 FAX
www.powerwave.com
Powerwave Technologies, Inc. All rights reserved. Powerwave, Powerwave Technologies, and the Powerwave logo are registered trademarks of Powerwave Technologies, Inc.
Main European Office
Knarrarnasgatan 7 8tr.
164 40 Kista, Sweden
+46 8-540-822-00
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181 Johnston Road
Wanchai, Hong Kong
+852 2512 6123
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