User Manual
MCPA Outdoor System
MCPA Outdoor System
User Manual
May, 2012
Version 1.0
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User Manual
MCPA Outdoor System
- INDEX -
1. SUMMARY ..................................................................... 4
2. SYSTEM CONFIGURATION ............................................ 5
3. SET UP ...... ........................................................ 13
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U.S.A.
U.S.FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE
STATEMENT INFORMATION TO THE USER
Caution: Any changes or mo difications to t his device not explicitly a pproved b y m anufacturer
could void your authority to operate this equipment.
NOTE: This equipment has been tested and founded to comply with the limits for a Class A
digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation.
This e quipment g enerates, u ses, a nd ca n radiate radio f requency energy and, i f not i nstalled
and u sed i n a ccordance w ith the i nstructions, ma y c ause h armful i nterference t o r adio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference i n w hich ca se t he u ser w ill b e r equired t o c orrect t he i nterference a t h is o wn
expense.
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MCPA Outdoor System
1. SUMMARY
1.1 Overview
MCPA System was designed to improve communication coverage/service quality and customer
satisfaction for mobile handset users in coverage areas such as metropolis, urban areas, high
dense area and BTS Cell are target candidates for installation. MCPA (Multi-Carrier Power
Amplifier) Booster system provides high p erformance network u pgrade solution ranging from
highly capital-intensive options
1.2 Characteristic
Compensate Loss of Feeder Line between BTS and Antenna.
Expand US-PCS BTS Coverage/ Service Coverage.
Continuous Service with no Trouble is available by Bypass. (RF Switch)
Be able to amplify output power of up to 200W due to enable to regulate Gain of 5.5
~14.5dB on the case of TX Signal though low Output power of existing BTS.
Enable to Remote Control through communication of SMS using by existing PCS Network,
monitor and manage easily for a notebook through Ethernet communication.
Abbreviation
MCPA : Multi-Carrier Power Amplifier
BTS: Base Transceiver Station
MCA: Multi-Carrier Amplifier
FEU: Front End Unit
MCU: Micro Controller Unit
PSU: Power Supply unit
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MCPA Outdoor System
2. System Configuration
2.1 System Description
2.1.1 Linear Technology
RF Circuit Composition is Simple
Feed Forward of Matched Broad-band Quality
Feed Forward Linear Technology Increases Efficiency and Reduces Heat
2.1.2 Modular System
If One Sector MCA Module Fails, the Other Sectors Will not be affected Modules
Moved In and Out for Easy Replacement, Optimizes Size
User Manual
2.1.3 Passive Intermodulation
Poor Contact Junctions
Components Made with or Plated with Materials that Exhibit Some Level of Hysteresis
Low Passive IMD System
2.1.4 Safety Design
Individual FAN Temperature Sensor
Automatic Bypass Function
2.1.5 User Friendly
Web UI Interface, Easy Check and Control
System/Status: Displays current firmware and user controllable configurations.
Status/Alarm: Displays the status of all the individual alarm parameters.
System/Configuration: Displays and allows modification to system configurations.
System/Download - Firmware related interface.
Dry Contact Alarm - interface to existing base station alarm reporting circuits.
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2.2 System Design and Operation
2.2.1 System Design
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MCPA Outdoor System
[Figure1 Outdoor System]
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[Figure2 Cabinet Front, Rear]
[Figure3 System Dimensions]
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[Figure4 PSU]
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[Figure5 MCA]
[Figure6 MCU]
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[Figure7 FEU]
[Figure8 RF Switch]
[Figure9 Bias-T]
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2.3 Cabinet Flow of Air
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MCPA Outdoor System
[Figure12 Flow of Air]
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Part
Function
Remark
Minor Alarm
Monitor for
Alarm for LNA
• LNA Device Fail Alarm
• PSU AC, DC Fail Alarm (Rectifier Module#1, Module#2,
• Alarm Log Record for the Last 100 Failure Event Records
.4 Function
• High Temp Alarm Occurs at 185℉, Shutdown Above 190℉
User Manual
MCPA Outdoor System
Major Alarm
Generation
For MPCA
Generation
For MPCA
MCA
System Alarm
• DC Fail Alarm @ V-sup < +24Vdc or V-sup > +30Vdc
• Over Power Output Alarm @ Output Power is Larger than
Maximum Power + 0.5dBm±0.5dB
• VSWR Alarm 3:1 (6dB±1dB) @ above +40dBm
• Major Loop Fail – Error in 1st Loop Level
• Normal Operation When this Alarm Condition Disappears
• Minor Loop Fail – Error in Feed Forward Path
• Forward Power (MCPA Monitor Ranges From 33dBm to 54dBm)
Module#3 DC Fail Alarm)
• FAN Alarm (FAN Individual with Alarm Sensor)
Door Open Alarm
Shutdown
No
Shutdown
(Include Alarm Event/Time/Date)
• Dry Contact Main Remote Alarming Optional
• 5 min Alarm Delay
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. SET UP
.1 System Set up
1) Check points before system set up
a. Verification of system installation status
- Electricity, In/out antenna, coaxial cable connection, and equipment mounts status.
b. Verification of system accessories
- User should check whole necessary accessories.
c. Check receipt signal level
- User should check whether receipt environmental condition is in accordance with system
specification, so that system operation will be optimized.
2) Check points after system set up
a. Check by external LED
① RUN: Green light ON (Off: Green light off)
② ALARM: Green light in normal status, Red light in alarming
③ SHUT DOWN: Green light in normal status, Red light in Shutdown status
b. Verification of operation status
- User should verify following status with Output monitoring terminal, which is provided by
Spectrum Analyzer
- Output power generation status, system spurious emission characteristics.
c. Verification of signal quality and strength in service area
- User s hould v erify s ignal strength a nd quality of i n-service co verage area by u sing ce ll
phone or other measuring device.
d. Verification of upper-level NMS operation status
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.2 Troubleshooting
In case of abnormal operation, technician should diagnose abnormality via remote access or
directly connecting to MCPA using Ethernet cable. If technician is required to conduct repairs
due to major alarm, MCPA should first be powered off, and then technician should prepare the
proper measurement equipment before trying to fix the problem. In most cases of major MCPA,
GST will simply replace the unit and conduct repairs at the appropriate facility.
.2.1 Necessary Testing and Measuring Equipment
1) Power Attenuator: 30dB(1000Watt) 1EA, 20dB(25Watt) 1EA
2) Signal Generator: 3GHz
3) Spectrum Analyzer: 3GHz
4) Multi-Meter: 1EA
5) NoteBook: 1EA
.2.2 Notice
1) Troubleshooting should be performed by a trained technician.
2) Parts that seem to be not used should not be disassembled.
3) While troubleshooting, technician should use attenuator to check RF Signal output.
.2.3 Simple Troubleshooting Method
1) Verify LED Status
- Normal operation: Green light on. Alarming: Red LED on.
2) Technician should check external and internal connectors to ensure that all connections are
tightly secure. These connectors should be cleaned regularly.
3) I f t echnician t hinks t here i s a s erious p roblem, c all a fter s ales t eam for o ver-the-phone
technical support. 1-866-9-GST-USA (1-866-947-8872)
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Item
Check Point
Troubleshooting
System input power
From BTS (37.8dBm ~ 46.5dBm)
System gain range
5.5dB ~ 14.5dB
Output power at ANT
- Please check quantity of all accessories
Check following status;
Verify that the antennas are securely mounted and
.2.4 Troubleshooting
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MCPA Outdoor System
Check before
system
operation
Check after
system
operation
range
port
Check points before open
for service
Check points after open
for service
: 6Watt ~ 45Watt @ 3Carriers
52dBm@ ANT output port
with specification before you set up
- Fit cable length in accordance with field condition
-
pointed in the correct directions
- Connection status between antennas and RF cable
- Proper AC power status
- Grounding status of electrical circuit
- Coaxial cable (RF) construction status
- Connectors connection status
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.2.5 Troubleshooting Guide Related to LED
Status of each individual module can be determined by the status of the LED (MCU, Rectif ier,
MCA and FEU). All LEDs should illuminate a green; any other indication requires access to the
Status / A larm page. Some c ommon a larms a nd t here r emedies are d etailed in the fo llowing
sections.
Rectifier Module Red LED or Individual Faults
Any rectifier module fault is remedied by replacing a known good module with the suspected
unit. Reference the Rectifier Module section in Installation Guide for the procedure on Rectifier
Module replacement.
Rectifier Voltage Fault
Measure the AC input and/or DC Output (all 3 fused outputs) and validate that the voltage is
within the specified range detailed.
MCA and FEU Fault
Disable the MCPA to force the sector into bypass, using external measuring equipment validate
the RF passing through the MCPA System. Disable the MCA first then reseat the MCA and FEU
modules, e nable t he MCPA. When equipment fails to o perate, replace the M CA and F EU with
another module.
MCU Fault
If the communication to the system cannot be established the MCU is not operating. Measure
the +28.5Vdc on the MCU. When MCU fails to operate, replace the MCU.
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Symptom
Check Point
Troubleshooting
When MCPA
Please Check following status;
- Make sure output power is operating normally
Technician should verify
- When Red light on the Shutdown LED, technician
- Technician should
- Increase output power or check i nput change o f
.2.6 Troubleshooting Guide Related to RF
User Manual
MCPA Outdoor System
does not
work
properly
When in
alarming
Check electricity cord
connection status
DL VSWR alarm
DL over-output alarm
Temperature alarm
-Re-plug in Adapter cord
- Make sure Server Antenna Port is disconnected.
- Please reset Adapter upon completing
Alarm troubleshooting
- Please Reset Adapter upon completing
Alarm troubleshooting
Check following status;
- Setting level of maximum temperature limit
- Temperature offset is normal or not
- Circumstances of temperature
- Please Reset Adapter upon completing
RF off
category of alarm at the
front side of MCPA
When output
power is no
longer
problem
connect BTS with ANT
port of MCPA
- Please make sure all
connectors are fastened
Check the input level
Alarm troubleshooting
- Verify that the MCA’s are On
- Please Reset Adapter upon completing
Alarm troubleshooting
should troubleshoot the alarm via Notebook
computer
- Reconnect the connector
- Change it if the connector is defective
BTS side
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- If the G ain is d ifferent from normal level, please
- It i s possible for connectors to get too tight and
Check input signal
Increase output power level of MCPA by adjusting
Check RSSI signal
- Contact network management team or service
Check connection
Check performance of each module (Diagnosed by
MCPA Outdoor System
In case of
dropped call
or bad signal
after set up
In case of
output Signal
wavelength is
not shown
flat or looks
like
oscillation
Check gain of the unit
Cable connector loose
strength in the service
area
strength
fastened between
antenna and cable
(Signal wavelength
should be flat and stable
if technicians shake
CABLE. If not, it is
connection problem)
Input level change or
module overheating
contact A/S team
damage the equipment or throughput
- Please contact installer or service provider upon
verification
-
attenuation level
provider
- If connection is not proper, reconnect cable and
connector and then check the output power again
- Check input level from BTS side.
-
A/S team)
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Symptom
Check Points
Troubleshooting
-In case of Ethernet, verify IP addressing, DHCP
cable
-Make sure 1:1 connection
Follow instructions in the installation guide for this
CLI connection Check by
-Please verify port number of PC communication
.2.7 Troubleshooting Guide Related to NMS
User Manual
MCPA Outdoor System
Link Fail
Communication problem
CLI connection,
status check
USB to serial cable
function, and that cookies are deleted
-Verify that a crossover Ethernet cable is being used
-
connection procedure
-Please check cable connection status
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MPE Information
Warning: Exposure to Radio Frequency Radiation The radiated output power
of this device is far below the FCC radio frequency exposure limits.
Nevertheless, the device should be used in such a manner that the potential
for human contact during normal operation is minimized. In order to avoid
the possibility of exceeding the FCC radio frequency exposure limits, human
proximity to the antenna should not be less than
1200cm during normal
operation. The gain of the antenna is 20 dBi.The antenna(s) used for this
transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
ⓒ
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