MCA9129-90-A Installation & Service Manual
Section 1 General Description
1-1 Introduction
This manual contains information and procedures for installation, operation, and maintenance of
Powerwave’s MCA9129-90
ized into six sections as follows:
Section 1. General Description
Section 2. Installation
Section 3. Operating Instructions
Section 4. Principles of Operation
Section 5. Maintenance
Section 6 Troubleshooting
1-2 General Description
The MCA9129-90MCA9129-90-A (see figure 1-1) is a linear, feed-forward power amplifier that
operates in the 25 MHz frequency band from 869 MHz to 894 MHz. The amplifier can simultaneously transmit multiple frequencies, with better than -65 dBc third order intermodulation distortion
(IMD) at 100 watts output, or –60 dBc IMD at 120 watts output. It is designed for use in an amplifier system that is modular in design, and is ideally suited for use in AMPS/TDMA/CDMA base
stations. When used in a subrack employing four MCA9129-90
system offers up to 360 watts output at
–65dBc IMD performance level (430 watts output at –60dBc IMD). The plug-in Model MCA9129-
90MCA9129-90-A amplifier modules can each provide 120 watts of power and function com-
pletely independently of each other. The amplifier modules are designed for parallel operation to
produce high peak power output and backup redundancy for remote applications. All solid-state,
the system is designed to provide trouble-free operation with minimum maintenance. The system's modular construction and unique and highly effective LED-based operational status and
fault indicators help minimize downtime. The turn-on and turn-off sequences of voltages are fully
automatic, as is overload protection and recycling. Inadvertent operator damage from front panel
manipulation is virtually impossible.
MCA9129-90-A multicarrier cellular amplifier. The manual is organ-
MCA9129-90-A amplifiers, the
Each amplifier module has a status connector that allows the host system to monitor the amplifier
module performance. The front panel of each amplifier module has unit level status/fault indicators and an RF on/off/reset switch. Primary power for the amplifier is +27 Vdc. Cooling for each
plug-in amplifier module is provided by three fans, two mounted on the front and one on the rear
of the module. The fans draw outside air through the front of the module and exhaust hot air out
through the rear of the module.
1-3 Functional and Physical Specifications
Functional and physical specifications for the amplifier are listed in tables 1-2 and 1-3.
1-4 Equipment Changes
Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, including but not necessarily limited to component substitution and circuitry changes. Changes that
impact this manual may subsequently be incorporated in a later revision of this manual. To that
end, we ask that you, our customer, share with us any information acquired in field situations that
would enhance this manual.
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05060 Rev. AC 1-1 July 2001November 2002
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
MCA9129-90-A Installation & Service Manual
1-5 Ordering Information
Table 1-1 following gives the part numbers and descriptions to be used when ordering either an
entire amplifier or replacement fans.
Table 1-1 Major Amplifier Components
Model Number Description
MCA912990MCA9129-90A
800-01024001800-01779001
800-01025001800-01779002
800-00781-002 Rear fan assembly.
A quality transmit filter or duplexer must be installed after this amplifier to ensure
FCC Type Acceptance of the amplifier. The filter/duplexer should be rated for at least
500 Watts average power and 5000 Watts instaneous power (minimum) when four
amplifiers per subrack are installed.
100 W 869-894 MHz MCPA Module.
Front fan assembly, large.
Front Rear fan assembly, small
NOTE
Table 1-2 MCA9129-90
MCA9129-90-A Multicarrier Cellular Amplifier Functional
Specifications, 100 Watts
Frequency Range 869-894 MHz (25 MHz Bandwidth)
Total Maximum Input Power -12 dBm
Total Output Power 100 W typical (1 Module)
BTUs @ 100 W 3813
Intermodulation Distortion
and In-Band Spurious:
-65 dBc (Min) @ +24 +26 to +28 Vdc @ 100 Watts
(-55 dBc (Min) @ +23 to + 24 Vdc)
RF Gain at 880 MHz 62 dB
Gain Flatness:
Gain Variation Over Temperature:
± 0.7 dB @ 27 Vdc ±1 Vdc
±0.3 dB from 23 to 30 Vdc
Output Protection: Mismatch Protected
Input Port Return Loss: -14 dB (Min)
Harmonics: Better than -50 dBc
Out of Band Spurious: Better than -60 dBc
Duty Cycle: Continuous
DC Input Power:
+27 Vdc ± 1 Vdc, 45
36 Amps Max @ 100 Watts
Operational +21 Vdc to 30 Vdc
Operating Temperature: 0 ºC. to +50 ºC.
Storage Temperature: -40 ºC. to +85 ºC.
Operating Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
Storage Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
DC Input, Summary Alarm, and RF
Input / Output Connectors:
21-Pin D-Subminiature Combo Connector plus single-
pin D-Sub connector for additional DC capability.
Weight 45 pounds
Dimensions: 15.72” (9U) High, 5.50” Wide, 17.1116.75” Deep
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05060 Rev. AC 1-2 July 2001November 2002
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
MCA9129-90-A Installation & Service Manual
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05060 Rev. AC 1-3 July 2001November 2002
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
MCA9129-90-A Installation & Service Manual
NOTE
A quality transmit filter or duplexer must be installed after this amplifier to ensure
FCC Type Acceptance of the amplifier. The filter/duplexer should be rated for at least
500 Watts average power and 5000 Watts instaneous power (minimum) when four
amplifiers per subrack are installed.
Table 1-3 MCA9129-90
MCA9129-90-A Multicarrier Cellular Amplifier (FCC Tested @ 120
Watts)
Frequency Range 869-894 MHz (25 MHz Bandwidth)
Total Maximum Input Power -11 -11.2dBm
Total Output Power 120 W typical (1 Module)
BTUs @ 120 W 4381
Intermodulation Distortion
and In-Band Spurious:
-60 dBc (MinMax) @ +24 +26 to +28 Vdc @ 120 Watts
(-55 dBc (Min) @ +23 to + 24 Vdc)
RF Gain at 880 MHz 62 dB
Gain Flatness:
Gain Variation Over Temperature:
± 0.7 dB @ 27 Vdc ±1 Vdc
±0.3 dB from 23 to 30 Vdc
Output Protection: Mismatch Protected
Input Port Return Loss: -14 dB (Min)
Harmonics: Better than -50 dBc
Out of Band Spurious: Better than -60 dBc
Duty Cycle: Continuous
DC Input Power:
+27 Vdc ± 1 Vdc, 52
40 Amps Max @ 120 Watts
Operational +21 Vdc to 30 Vdc
Operating Temperature: 5 0ºC. to +40 ºC.
Storage Temperature: -40 ºC. to +85 ºC.
Operating Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
Storage Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
DC Input, Summary Alarm, and RF
Input / Output Connectors:
21-Pin D-Subminiature Combo Connector plus single-
pin D-Sub connector for additional DC capability.
Weight 45 pounds
Dimensions: 15.72” (9U) High, 5.50” Wide, 17.1116.75” Deep
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05060 Rev. AC 1-4 July 2001November 2002
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
MCA9129-90-A Installation & Service Manual
Figure 1-1 MCA9129-90MCA9129-90-A Amplifier
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05060 Rev. AC 1-5 July 2001November 2002
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
MCA9129-90-A Installation & Service Manual
Section 2 Installation
2-1 Introduction
This section contains unpacking, inspection, and installation instructions / recommendations for
the model MCA9129-90
censee perform the following tasks correctly and in good faith:
1. Carefully read all material in this section prior to equipment unpacking or installation.
2. Also, read and review the operating procedures in Section 3 prior to installing the equipment.
3. If applicable, carefully review the Federal Communications Commission (FCC) rules as they
apply to your installation. DON'T TAKE CHANCES WITH YOUR LICENSE.
2-2 Site Survey
Powerwave Technologies recommends that site surveys be performed by qualified individuals or
firms prior to equipment ordering or installation. Performing a detailed site survey will reduce or
eliminate installation and turn-up delays caused by oversights. A general site survey form is provided in Appendix A. This form is commonly used by Powerwave Field Engineers and may be
used as a guide. Pay particular attention to power plant capacity, air conditioning needs, floor
space, and RF/DC cabling/breaker requirements.
MCA9129-90-A multicarrier cellular amplifier. It is important that the li-
2-3 Electrical Service Recommendations
Powerwave Technologies recommends that proper AC line conditioning and surge suppression
be provided on the primary AC input to the +27 Vdc power source. All electrical service should be
installed in accordance with the National Electrical Code, any applicable state or local codes, and
good engineering practice. Special consideration should be given to lightning protection of all
systems in view of the vulnerability of most transmitter sites to lightning. Lightning arrestors are
recommended in the service entrance. Straight, short ground runs are recommended. The electrical service must be well grounded.
Each amplifier system should have its own circuit breaker (70-amp minimum), so a failure in one
does not shut off the whole installation. Circuit breakers should be thermal type, capable of handling the anticipated inrush current, in a load center with a master switch. See table 2-1.
A typical three-sector site will utilize three MCR4109-1 amplifier subracks, each housing up to four
MCA9129-90
432 amps of current required by this equipment, plus the remaining base station equipment. A
power plant of less than 800 amps is probably not sufficient. Since all the amplifiers are not running at full capacity at the same time in normal operation, table 2-1 describes the current load for
a 3 sector (70%), 2 sector (80%) and omni (90%) site. Based on this table, an 800 amp power
plant may suffice.
Battery backup or UPS systems should be installed in remote sites or in sites which experience
brownout conditions or generator switchovers. Adding this equipment should eliminate the need
for site visits by technicians after brownouts or power outages. Battery backup systems also provide excellent DC filtering as a side benefit.
MCA9129-90-A amplifiers. The power plant should be able to support the 540 amps
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 2-1 July 2001November 2002
MCA9129-90-A Installation & Service Manual
Table 2-1 Averaged DC Current Load
Amplifier
Power
100 12 378
100 8 252 288
100 4 126 144 162
100 1 31.5 36 40.5
No. Of
Amplifiers
3 Sector
Averaged Current
2 Sector
Averaged Current
1 Sector
Averaged Current
2-4 Air Conditioning
Each MCA9129-90MCA9129-90-A amplifier generates 3804 BTUs of heat at full power. A fully
populated MCR4109-1 operating at full power will generate 15,217 BTUs of heat. A full threesector site employing three fully populated MCR4109-1 subracks will generate 45,652 BTUs of
heat at full power (360W per subrack). A five-ton air conditioner is needed to cool this Powerwave
equipment. A full three-sector site probably needs at least a five-ton air conditioner to cool all of
the site's equipment, based on heat load averaging as described in table 2-2. Since all the amplifiers are not running at full capacity at the same time in normal operation, table 2-2 describes the
heat load for a 3 sector (70%), 2 sector (80%) and omni (90%) site. Perform a site survey to determine actual air conditioning needs.
Table 2-2 Averaged Heat Loading
Amplifier
Power
100 12 31,956.8
100 8 21,304.5 24,348.0
100 4 10,652.3 12,174.0 13,695.8
100 1 2,663.1 3,043.5 3,423.9
No. Of
Amplifiers
3 Sector Averaged
BTU's
2 Sector Averaged
BTU's
1 Sector Aver-
aged BTU's
2-5 Unpacking and Inspection
This equipment has been operated, tested, and calibrated at the factory. Only in the event of severe shocks or other mistreatment should any substantial readjustment be required. Carefully
unpack each piece of equipment after it has reached the installation site and is approximately in
place. Carefully open the several amplifier system containers and remove the subracks, amplifier
modules, input combiners, and miscellaneous interconnect cables and hardware. Retain all
packing material that can be reassembled in the event that the unit must be returned to the factory.
CAUTION
Exercise care in handling equipment during inspection to prevent damage caused by rough or careless handling.
Visually inspect the cabinet and all modules 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 the connectors or fans. Inspect male connectors on modules and harnesses for bent connector pins. If the equipment is damaged, a claim should be filed with the carrier once the extent of any damage is assessed. We cannot stress too strongly the importance of
IMMEDIATE careful inspection of the equipment and the subsequent IMMEDIATE filing of the
necessary claims against the carrier if necessary. If possible, inspect the equipment in the presence of the delivery person. If the equipment is damaged, the carrier is your first area of recourse. If the equipment is damaged and must be returned to the factory, write or phone for a
return authorization. Powerwave may not accept returns without a return authorization. Claims
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 2-2 July 2001November 2002
MCA9129-90-A Installation & Service Manual
for loss or damage may not be withheld from any payment to Powerwave, nor may any payment
due be withheld pending the outcome thereof. WE CANNOT GUARANTEE THE FREIGHT
CARRIER'S PERFORMANCE.
2-6 Installation Instructions (Refer to figures 1-1 and 2-1)
The MCA9129-90MCA9129-90-A amplifier module is designed for installation in a subrack that
permits access to the rear of the subrack for connection of DC power, RF, and monitor cables.
To install the amplifier proceed as follows:
1. Install the amplifier subrack in the equipment rack and secure in place based the subrack
installation manual instructions.
2. Connect the antenna cable to the output of the subrack.
3. Connect the transceiver output(s) to the input of the subrack. Refer to tables 1-1 and 1-2 for
proper RF input levels.
4. Connect the alarm cable(s) to the subrack.
WARNING
Verify that all circuit breaker switches supplying power to the subrack are in the OFF
position. Turn off external primary DC power before connecting DC power cables.
5. Connect positive primary power and negative primary power to the subrack. Tighten the
subrack power connections.
WARNING
Do not slam amplifiers into the subracks. Forcing the amplifier into the subrack at too
fast a rate may cause the pins on the 21-pin D-sub connector of the amplifier to become recessed or broken. The use of too much force while installing the amplifier
may also cause the splitter / combiner module of the MCR4109-1 to become poorly
aligned resulting in the inoperation of an amplifier installed in one of the two outer
slots.
6. Inspect the 21-pin D-sub connector on the rear of each amplifier before inserting it into the
subrack. Verify that all pins are straight, no pins are recessed, and the alignment shield is
not bent. At the front of the subrack, install the plug-in amplifier modules.
7. After verifying that the front panel power ON / OFF switch is in the OFF position, gently install
the plug-in amplifier modules in the subrack. Tighten top and bottom thumbscrews until they
are finger tight. Use a slotted screwdriver to tighten the thumbscrews an 1/8
past finger tight.
8. Check your work before applying DC voltage to the system. Make certain all connections are
tight and correct.
9. Measure primary DC input voltage. DC input voltage should be +27 Vdc ±1.0 Vdc. If the DC
input voltage is above or below the limits, call and consult Powerwave before you turn on
your amplifier system.
th
to a 1/4 turn
10. Refer to section 3 for initial turn-on and checkout procedures.
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 2-3 July 2001November 2002
MCA9129-90-A Installation & Service Manual
2-7 Multifunction Connector
The status, alarm, control, and power connections on the amplifier connectors are made through
a 21-pin D-Sub male combo connector and supplemental single-pin male D-Sub connector (figure
2-1) and are listed and described in table 2-3.
Figure 2-1 Amplifier Connectors (on Rear of MCA9129-90MCA9129-90-A Module)
Table 2-3 Amplifier Module Status, Alarm, Control, and Power Connections
Pin Function Description
21-Pin D-Sub Male Combo
A1 RF Input Coaxial Contact
A2 Power Input +27 Vdc (Power Contact)
A3 Ground Ground (Power Contact)
A4 RF Output Coaxial Contact
1 Ground Ground
2 RS 485 +RxD Serial Communication Data In
3
RS 485 -RxD
4 RS 485 +TxD Serial Communication Data Out
5
RS 485 -TxD
6NA
7NA
8 Fan Fail TTL signal normally low. A high indicates one or bothof the fans have
9 Forward Power Monitor An analog DC signal representing the RF output power of the MCA. The
10 NA
11 Average Power Input An analog DC voltage representing the average detected power of all
12 Address A0 Amp Address A0; Ground for high, float for low
13 Summary Fault TTL signal normally low. A high level indicates that the MCA has been
14 Address A1 Amp Address A1; Ground for high, float for low
15 Module Detect Ground potential. Informs the subrack that an MCA is plugged in.
16
17 FP Disable Output TTL signal, low if the front panel switch is in the ON position. A high
Bias InputNA TTL signal normally low for an enabled MCPA. A high level will
Single-Pin D-Sub Male
1 Power Input +27 Vdc (Power Contact)
Serial Communication Data In
Serial Communication Data Out
failed
voltage is 4 volts ± 100 mV at the maximum rated output power.
the MCAs in a subrack. This voltage is derived from dividing the sum of
all the forward power voltages in a subrack by the number of enabled
MCAs. This voltage is used by the MCA to determine a low power fault.
disabled by a recurring alarm fault.
disable the MCPA.
level indicates the front panel switch in the OFF position.
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 2-4 July 2001November 2002
MCA9129-90-A Installation & Service Manual
Section 3 Operating Instructions
3-1 Introduction
This section contains operating instructions for the Multicarrier Cellular Amplifier.
3-2 Location And Function Of Amplifier Module Controls And Indicators
The location and function of the plug-in amplifier module controls and indicators is shown in figure
3-1 and is described in detail in paragraphs 3-3 through 3-3.14.
Figure 3-1. MCA9129-90 Amplifier Module Controls and Indicators
3-3 Controls And Indicators
Ó Copyright Powerwave Technologies, Inc., July 2001. All rights reserved
044-05060 Rev. C 3-1 July 2001November 2002
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