Bravo | BMB0900 | User manual | Bravo BMB0900 User manual

BRAVO TECH INC.
Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630
Phone: 1-714-230-8333
Website: www.bravotechinc.com
Revision: UM·BMB0900-150-SG07·REV.A
©1999-2008 Bravo Tech Inc. All rights reserved.
The “Multi-carrier Outdoor Booster” must be installed only in a restricted access area.
The “Multi-carrier Outdoor Booster” is designed to operate according to the specification of this
User Manual.
Improper installation and operation of this equipment beyond the installation procedures, beyond
the designed operating specifications, and not in compliance with regulatory requirements will
revoke any warranty and may:
„
Prevent the equipment from performing properly
„
Violate regulatory RF emissions requirements
„
Require removal of the equipment from service.
Table of Contents
Table of Contents
1
2
SYSTEM INTRODUCTION ....................................................................................................................... 1
1.1
OVERVIEW ............................................................................................................................................... 1
1.2
SYSTEM BLOCK DIAGRAM ...................................................................................................................... 1
1.3
FUNCTION................................................................................................................................................ 2
1.4
APPLICATIONS ......................................................................................................................................... 3
1.5
SYSTEM CONFIGURATION ........................................................................................................................ 3
1.5.1
Outline drawing.................................................................................................................................. 4
1.5.2
Interface.............................................................................................................................................. 4
SYSTEM INSTALLATION ......................................................................................................................... 6
2.1
INSTALLATION OVERVIEW ....................................................................................................................... 6
2.1.1
Requirements on Installation Site ....................................................................................................... 6
2.1.2
Requirements on Anti-corrosion and Shock-protection ...................................................................... 6
2.1.3
Requirements on Illumination, Ventilation and Fire Protection ......................................................... 7
2.1.4
Power requirements............................................................................................................................ 7
2.1.5
Requirements on Lightning Protecting and Grounding ...................................................................... 7
2.1.6
Installation Preparation ..................................................................................................................... 7
2.2
CABINET INSTALLATION .......................................................................................................................... 7
2.2.1
Installation Requirements ................................................................................................................... 7
2.2.2
Installation.......................................................................................................................................... 8
2.2.2.1
Installation onThe Wall...............................................................................................................................8
2.2.2.2
Installation on The Floor.............................................................................................................................9
2.2.2.3
Installation on The Tower .........................................................................................................................11
2.3
CABLE INSTALLATION ............................................................................................................................ 12
2.3.1
Installation Requirements .........................................................................................................................12
2.3.1.2
Installation ................................................................................................................................................13
2.3.2
Installation and Connection of Feeders............................................................................................ 14
2.3.2.1
Installation Requirements .........................................................................................................................14
2.3.2.2
Installation ................................................................................................................................................14
2.4
INSTALLATION INSPECTION .................................................................................................................... 15
2.4.1
Booster Inspection ............................................................................................................................ 15
2.4.2
Cable Inspection............................................................................................................................... 15
2.5
3
Installation of Power Cable and Grounding Cable .......................................................................... 12
2.3.1.1
SYSTEM TEST ........................................................................................................................................ 15
MAINTENANCES AND MANAGEMENTS ........................................................................................... 17
3.1
SYSTEM MAINTENANCE ........................................................................................................................ 17
3.1.1
Routine Maintenance........................................................................................................................ 17
3.1.2
Indicator Lights ................................................................................................................................ 17
3.1.2.1
Monitoring and Alarm Indicator ...............................................................................................................17
3.1.2.2
Power Amplifier Indicator ........................................................................................................................18
3.2
3.2.1
SYSTEM MANAGEMENT ......................................................................................................................... 19
Alarm Range Setting......................................................................................................................... 19
I
Table of Contents
3.2.2
Power Amplifier and Low Noise Amplifier Gain Setting and Calculation ....................................... 20
3.2.2.1
Gain Setting ..............................................................................................................................................20
3.2.2.2
Gain Calculation .......................................................................................................................................21
3.2.2.3
Adjustment of PA Gain for BTS Upgrade.................................................................................................22
3.2.3
Alarm and Remote Shutdown Port Specification.............................................................................. 24
4
TECHNICAL SPECIFICATIONS ............................................................................................................ 26
5
APPENDIX .................................................................................................................................................. 28
II
Table of Contents
List of Figures
FIGURE 1 OUTDOOR BOOSTER ................................................................................................................................. 1
FIGURE 2 CONFIGURATION OF OUTDOOR BOOSTER ................................................................................................. 2
FIGURE 3 SYSTEM CONFIGURATION ......................................................................................................................... 3
FIGURE 4 OUTLINE DRAWING .................................................................................................................................. 4
FIGURE 5 OUTDOOR BOOSTER FRONT PANEL ........................................................................................................... 4
FIGURE 6 OUTDOOR BOOSTER REAR INTERFACES.................................................................................................... 5
FIGURE 7 DISTANCE OF WALL INSTALLING HOLES ................................................................................................... 8
FIGURE 8 INSTALLING INFLATABLE BOLT ................................................................................................................. 8
FIGURE 9 WALL MOUNTED BRACKET ...................................................................................................................... 9
FIGURE 10 WALL MOUNTED PREVIEW ..................................................................................................................... 9
FIGURE 11 DISTANCE OF FLOOR INSTALLING HOLES .............................................................................................. 10
FIGURE 12 BASE BRACKET..................................................................................................................................... 10
FIGURE 13 FLOOR INSTALLATION ........................................................................................................................... 10
FIGURE 14 TOWER MOUNTED BRACKET ................................................................................................................ 11
FIGURE 15 OUTDOOR BOOSTER CABINET FIXED HOLES ON THE TOWER MOUNTED BRACKET............................... 11
FIGURE 16 TOWER MOUNTED PREVIEW ................................................................................................................. 12
FIGURE 17 INSTALLING POWER CABLE AND GROUND CABLE ................................................................................ 13
FIGURE 18 POWER CABLE ...................................................................................................................................... 13
FIGURE 19 CABLE INSTALLATION ........................................................................................................................... 14
FIGURE 20 FLOW CHART OF SYSTEM DEBUGGING ................................................................................................. 16
FIGURE 21 MONITORING AND ALARM INDICATOR LIGHTS ..................................................................................... 18
FIGURE 22 POWER AMPLIFIER INDICATORS ............................................................................................................ 18
FIGURE 23 POWER AMPLIFIER AND LOW NOISE AMPLIFIER GAIN SETTING ........................................................... 20
FIGURE 24 ALARM AND SHUTDOWN PORT ............................................................................................................. 24
List of Tables
TABLE 1 OUTDOOR BOOSTER COMPONENTS ............................................................................................................ 2
TABLE 2 FRONT PANEL INTERFACES DESCRIPTION ................................................................................................... 5
TABLE 3 OUTDOOR BOOSTER REAR INTERFACES DESCRIPTION ............................................................................... 5
TABLE 4 SPECIFICATION OF INDICATOR LIGHT ........................................................................................................ 18
TABLE 5 DESCRIPTION OF POWER AMPLIFIER INDICATOR LIGHTS .......................................................................... 19
TABLE 6 ALARM RANGE SETTING .......................................................................................................................... 19
TABLE 7 VALUE SETTING OF THE 4 BIT BINARY CODE SWITCH .............................................................................. 20
TABLE 8 SYMBOL DESCRIPTION ............................................................................................................................. 22
TABLE 9 SPECIFICATION OF ALARM AND REMOTE SHUTDOWN PORT ....................................................................... 25
III
System Introduction
1 System Introduction
1.1
Overview
Bravo Tech Inc's Multi-Carrier High Power Outdoor Booster provides higher downlink EIRP to
extend the coverage of existing sites. The booster is weather resistant, has an advanced thermal
management system and is capable of operating under IP55 environmental extremes. It works at
the frequency of 890-915MHz (uplink) and 935-960MHz (downlink) with the Max input power of
43dBm.
Figure 1 Outdoor Booster
1.2
System Block Diagram
The following figure shows the system block diagram of the multi-carrier outdoor booster.
1
System Introduction
Duplexer
Duplexer
Rx
BTS0
Tx/Rx
LNA
ANT0
Tx/Rx
Combiner
BTS
MCPA
BTS1
Tx/Rx
Filter
Rx
ANT1
Rx
LNA
Duplexer
Figure 2 Configuration of Outdoor Booster
The system is composed of a downlink MCPA, duplexers, LNA, attenuator, bypass switch, control
assembly, modem and power supply.
Item
Components
Qty
1
Downlink multi-carrier power amplifier
1 PCS
2
Duplexer
2 PCS
3
LNA (built-in the filters)
2 PCS
4
Attenuator
1 PCS
5
Bypass Switch
2 PCS
6
Control assembly
1 PCS
7
Modem
1 PCS
8
Power supply
1 PCS
Table 1 Outdoor Booster Components
1.3
Function
This product has the following functions:
„
Amplifies downlink signal power up to 150W, so as to extend the coverage of BTS.
„
Amplifies uplink signal, reduces BTS noise figure and improves uplink sensitivity.
„
Auto by-pass function.
„
Built-in input attenuator eliminates the need of changing BTS ’S output power.
„
Extensive system monitor and control.
2
System Introduction
1.4
Applications
„
Coastlines and large lakes.
„
Areas far from city center, such as remote countryside.
„
Long and narrow districts, such as highway, railroad, sea-route.
„
Rural areas, such as grassland and desert.
„
Areas where macro-BTS is difficult to be built and coverage of micro-BTS is not enough,
such as mountainous region, foothill, highland.
„
Areas where the coverage of micro-BTS or micro-cell is not good, such as blind spots of
micro-cell coverage.
„
Building coverage gaps between networks.
„
Large area of low population density.
„
Improving coverage into zoning restricted housing areas.
1.5
System Configuration
The system configuration of a multi-carrier outdoor booster is shown in Figure 3.
ANT0
Tx/Rx
ANT1
Rx1
BTS0
Tx/Rx
BTS1
Tx/Rx
BTS
Figure 3 System Configuration
3
System Introduction
1.5.1 Outline drawing
Figure 4 shows the outline drawing of outdoor booster. Dimensions of outdoor booster are
437mm(17.2”) x 216mm(8.5”) x 706mm(27.8”) (H x W x D)
Figure 4 Outline Drawing
1.5.2 Interface
The interface of the outdoor booster is shown in Figure 5.
Figure 5 Outdoor Booster Front Panel
4
System Introduction
Interface
Description
Serial Port
Communication port, RS232
Power On/Off
Power On/Off switch
SIM slot
SIM card slot of wireless modem
PA Gain Binary Code Switch
1-2-4-8 binary code switch for PA gain adjustment
LNA Gain Binary Code Switch
1-2-4-8 binary code switch for LNA gain adjustment
Modem Antenna SMA Terminal
Wireless modem antenna SMA terminal
LED Indicators
8 LEDs for alarm and monitoring
Table 2 Front Panel Interfaces Description
Figure 6 Outdoor Booster Rear Interfaces
Interface
Description
AC220V
Input power interface for 220V AC
BTS0 TX/RX
Connect to BTS main TX/RX port
BTS1 TX/RX
Connect to BTS diversity TX/RX port
ANT0 TX/RX
Connect to main antenna (TX/RX)
ANT1 RX
Connect to diversity antenna (RX)
ALARM
ALARM output port(Form C alarms)
Table 3 Outdoor Booster Rear Interfaces Description
5
System Installation
2 System Installation
This chapter introduces the installation of multi-carrier outdoor booster
Installation steps are as the following chart::
Installation
Preparation
Booster Installing and
Cables Connection
Installation Inspection
System Testing &
Debugging
2.1
Installation Overview
2.1.1 Requirements on Installation Site
The outdoor booster could be installed on the wall or floor, and it should be installed close to the
antenna. The requirements of installation site are following:
„
The installation site should be non-corrosive.
„
If the cabinet should be mounted on the wall, the wall’s bearing capacity must be more
than 55kg(122lb). Concrete and brick wall are recommended.
2.1.2 Requirements on Anti-corrosion and Shock-protection
To safeguard products and operators, the installing location must be kept away from caustic or
poisonous pollutants. If the site can’t meet seismic, it must be properly reinforced
6
System Installation
2.1.3 Requirements on Illumination, Ventilation and Fire Protection
The installation site should have enough illumination for installation and maintenance needs.
Flammable and explosive material should not be near to the site.
2.1.4 Power requirements
Nominal voltage: 220V AC. Variety range: 100-260 V AC, 47-63 Hz Single Phase.
The power consumption of outdoor booster is about 1,300W. Be certain to select a fuse or a
breaker with the proper capacity. 10A/220V or 20A/110V breaker is recommended.
2.1.5 Requirements on Lightning Protecting and Grounding
The cross section of grounding cable should be no smaller than #4AWG(25mm2). The grounding
cable should be connected to each ground directly without any splices. Keep the grounding cable
as short as possible.
2.1.6 Installation Preparation
The following tools will be used for a successful installation:
„
„
„
„
„
„
„
„
„
2.2
A multimeter
Philips screwdrivers
Flat blade screwdrivers
Wrenches
A Drill
A VSWR testing devices
N adapters
RF testing cables
Power meter (part of hand-held tester)
Cabinet Installation
2.2.1 Installation Requirements
„
„
Unused circuit breaker
Convenient maintenance access
7
System Installation
„
Sufficient space for installation
2.2.2 Installation
Caution
The following high-altitude operation should be only performed by qualified personnel under well protection.
2.2.2.1
Step
1
2
3
4
Installation onThe Wall
Operations
Hold mount in place.
Make 6 holes (Ф10) and drill as shown in Figure 7.
Install expansion bolts (concrete anchors) as shown in Figure 8. Bolt the mount into place.
Assemble the bracket and mount the cabinet on the bracket by using the M8*16 bolt. Mount the bracket
on the Wall. (Notes: Mounting the bracket before mounting the cabinet on the bracket is acceptable.)
Figure 7 Distance of Wall Installing Holes
Figure 8 Installing Inflatable Bolt
8
System Installation
Figure 9 Wall Mounted Bracket
Figure 10 Wall Mounted Preview
2.2.2.2
Step
1
2
3
4
Installation on The Floor
Operations
Hold mount in place.
Make 4 holes (Ф10) and drill as shown in Figure 11.
Install expansion bolts (concrete anchors) as shown in Figure 8. Bolt the mount into place.
Assemble the bracket and mount the cabinet on the bracket by using the M8*16 bolt. Mount the bracket
on the floor. (Notes: Mounting the bracket before mounting the cabinet on the bracket is acceptable.)
9
System Installation
Figure 11 Distance of Floor Installing Holes
Make drill
Figure 12 Base Bracket
Figure 13 Floor Installation
10
System Installation
2.2.2.3
Step
1
2
Installation on The Tower
Operations
Hold mount in place.
Assemble the bracket and mount the cabinet on the bracket by using the M8*16 bolt. Mount the bracket
on the Wall with U pipe lock. (Notes: Mounting the bracket before mounting the cabinet on the bracket
is acceptable.)
Figure 14 Tower Mounted Bracket
Figure 15 Outdoor Booster Cabinet fixed holes on The Tower Mounted Bracket
11
System Installation
Figure 16 Tower Mounted Preview
2.3
Cable Installation
2.3.1 Installation of Power Cable and Grounding Cable
2.3.1.1
Installation Requirements
Note
The NEC(National Electrical Code) does not allow signal wires to share the same conduit with power wires unless
the signal cable’s voltage range is equal to the power wire’s voltage range.
„
Avoid bundling signal cable and grounding cable/power cable together, keep them
separate.
„
The power cable and grounding cable are supplied, the connectors for the booster end of
power is supplied.
„
Check open and short circuit before installing the power cable.
12
System Installation
2.3.1.2
Installation
Attention
All the power switchs must be switched off before cable installation.
The installation of power cable and grounding cable is shown in Figure 17. The grounding cable
should be green or yellow-green colored copper cable, with section larger than 4AWG(25mm2)
and resistance lower than 0.5Ω.
Figure 17 Installing Power Cable and Ground Cable
The connection of power cable connector is shown as following figures.
L – Brown, Pin 1
N – Blue, Pin 2
GND – Yellow, Pin 3
Figure 18 Power Cable
13
System Installation
2.3.2 Installation and Connection of Feeders
2.3.2.1
Installation Requirements
„
Shut down the base station and transmitters.
„
Marking the feeder by label after installation.
2.3.2.2
Installation
The cable installation and connection is shown in Figure 19.
TX/RX TX/RX
BTS
Feeder Coaxial
Feeder Coaxial
BTS0
TX/RX
ANT0
TX/RX
Feeder
Feeder
ANT1
RX
BTS1
TX/RX
Remote Monitor Modem/
Alarm Out
Alarm Cable
ALARM
100~260VAC
Circuit Breaker
Power Cable
AC220V
Figure 19 Cable Installation
14
System Installation
2.4
Installation Inspection
2.4.1 Booster Inspection
Item
Description
1
Stable and normal.
2
Properly fastened to wall or floor.
3
Screws and nuts screwed tightly, without missing flat washers and spring washers. Spring washers must be
on the top of flat washers.
4
No cable damage.
5
Clean, no smudges or dust.
6
Connections between metallic configurations must be reliable, to assure the reliable electric connectivity.
2.4.2 Cable Inspection
Item
Description
1
The connection of the cable is tight, not loose or damaged.
2
The cable shell not damaged.
3
Grounding cable is connected properly.
4
Cables are dressed neatly, power kept separate from signal.
5
The minimum bending radius of the cable is proper. (Shouldn’t be less than twenty times of the cable’s
diameter.)
2.5
System Test
Test the system after the device was installed and inspected.
Test steps for Outdoor Booster:
„
VSWR testing (sweep test of cables and antenna)
„
Effect testing: DT/CQT testing
„
Region optimize: base on the OMC-R statistic data, adjusting the base station’s physical
parameter, regional parameter and switch parameter. So that the system can work
optimally..
„
Startup setting: uplink and downlink gain setting. To see the detail in the section 4.2.2
Power Amplifier and Low Noise Amplifier Gain Setting.
15
System Installation
See test flowing chart on Figure 14:
Test Start
Test Data Before Installation
OME Statistic
DT Test Statistic
CQT Test Statistic
BTS Coverage Range
Install and Adjust Booster
Test Data After Installation
System Optimize
No
Compare The Test Data
Best Effect?
Yes
Test Process End
Document Management
Figure 20 Flow Chart of System Debugging
16
OME Statistic
DT Test Statistic
CQT Test Statistic
BTS Coverage Range
Maintenances and Managements
3 Maintenances and Managements
This chapter describes the operation and maintenance of the outdoor booster.
3.1
System Maintenance
3.1.1 Routine Maintenance
The booster provides the following protection functions: LNA protection, overpower protection,
VSWR protection and over-temp protection. When protection is triggered, the outdoor booster
switches to by-pass mode and sends out alarm signal. Generally, manual maintenance is not
required. A routine check every season or every half year is enough, including:
„
Check the indicator status (normal or alarm).
„
Check the fans working status (normal or alarm).
„
Change the air filter every half year.
„
Clean the dust in the convection mask both of the front and rear doors and the fans.
„
If any abnormity’s found, examine the system and make records.
„
Check power output.
3.1.2 Indicator Lights
3.1.2.1
Monitoring and Alarm Indicator
The outdoor booster has 8 indicator lights for monitoring and alarm, as shown in the following
figure:
17
Maintenances and Managements
Figure 21 Monitoring And Alarm Indicator Lights
The specification of indicator lights is shown in Table 4.
Item
1
2
3
4
5
6
7
Label
Color
State
PA
Green
On
Power amplifier works normally
Red
On
Power amplifier failure
Green
On
Low noise amplifier works normally
Red
On
Low noise amplifier failure
Green
On
Power supply works normally
-
Off
No power or switch is off
Green
On
PA power is normal
Red
On
PA is overpower
Green
On
VSWR is normal
Red
On
VSWR failure
Green
On
PA temperature is normal
Red
On
PA is over-temperature
Green
Flashing
System working normally
Red
Flashing
System working failure
-Power amplifier indicator light
LNA0/LNA1
-Low noise amplifier indicator light
PWR
-Power indicator light
PA-POW
-Power amplifier overpower indicator light
VSWR
-VSWR indicator light
TEMP
-Power amplifier temperature indicator light
WORK
-System working indicator light
Table 4 Specification of indicator light
3.1.2.2
Power Amplifier Indicator
The power amplifier module has 3 indicator lights:
Figure 22 Power Amplifier Indicators
18
Description
Maintenances and Managements
Item
1
2
3
Label
Color
State
MAJOR ALM
Red
On
MINOR ALM
Yellow
Off
RF ON
Green
Off
MAJOR ALM
Red
Off
MINOR ALM
Yellow
On
RF ON
Green
Off
MAJOR ALM
Red
Off
MINOR ALM
Yellow
Off
RF ON
Green
On
Description
Power amplifier alarms and be shut down
Power amplifier alarms but still works
Power amplifier works normal
Table 5 Description of Power Amplifier Indicator Lights
3.2
System Management
3.2.1 Alarm Range Setting
The factory sets alarm range settings as follows:
Item
Indicator light
Alarm
1
LNA0/LNA1
Over current
2
PA-POW
Over power
3
VSWR
Over VSWR
4
TEMP
Over temperature
Range
Upper limit: 200mA
Down limit: 42mA
Referential current: 100mA
Power amplifier shut down power value: 52dBm(160 Watt)
Over VSWR alarm and shut down: 3.5
Over VSWR restart : 2.0
Over temperature alarm and shut down power amplifier: ≥95°C
Over temperature restart: 75°C
Table 6 Alarm Range Setting
19
Maintenances and Managements
3.2.2 Power Amplifier and Low Noise Amplifier Gain Setting and
Calculation
3.2.2.1
Gain Setting
Figure 23 Power Amplifier and Low Noise Amplifier Gain Setting
Shown as Figure 23, ‘PA’ and ‘LNA’ switch are a 4 bits binary 8421 code switch, ‘0’ for switch ‘ON’
and ‘1’ for ‘OFF’. See the Table 7 for the switch setting in detail.
PA/LNA Gain
Switch
Switches
1
2
3
4
0
ON
ON
ON
ON
1
ON
ON
ON
OFF
2
ON
ON
OFF
ON
3
ON
ON
OFF
OFF
4
ON
OFF
ON
ON
5
ON
OFF
ON
OFF
6
ON
OFF
OFF
ON
20
Maintenances and Managements
7
ON
OFF
OFF
OFF
8
OFF
ON
ON
ON
9
OFF
ON
ON
OFF
10
OFF
ON
OFF
ON
11
OFF
ON
OFF
OFF
12
OFF
OFF
ON
ON
13
OFF
OFF
ON
OFF
14
OFF
OFF
OFF
ON
15
OFF
OFF
OFF
OFF
Table 7 Value Setting of the 4 Bit Binary Code Switch
3.2.2.2
Gain Calculation
Below descript the calculation of the gain of downlink PA and uplink LNA.
PBTS
BTS
Loss
Pin
Outdoor booster
Pout
Gdown: DownLink Gain:0~15dB
Gup: UpLink Gain:0~15dB
Item
Symbol
Description
1
PBTS
BTS output power
2
Pin
Booster input power
3
Loss
Cable loss
4
Gdown
PA gain
5
Pout
PA output power
21
Maintenances and Managements
Item
6
Symbol
Description
Gup
LNA gain
Table 8 Symbol Description
Method1:
The max output power of PA is 150W (51.7dBm), the gain of PA is calculated as the following
formula:
Gdown = Pout-Pin = Pout-(PBTS-Loss) = 51.7dBm-(PBTS-Loss)
On the assumption that the output power of BTS is 20W (43dBm), the cable loss is 3dB, and then
the proper gain setting is:
Gdown = Pout-(PBTS-Loss) = 51.7dBm-(43dBm-3dB) = 11.7dB
To avoid the over-power alarms of the booster, set the gain 1dB low, so for the above example,
the PA gain is set to10dB.
Method1:
Alternative setting: set to zero, active BTS, measure power.
Gup compensates the insertion loss of feeder and booster. For engineering experience, Gup =
8~12dB is recommended.
3.2.2.3
Adjustment of PA Gain for BTS Upgrade
The BTS output power will be enhanced when the BTS adds channel(s) and expand capability.
That means the booster’s input power will be improved. Due to the booster maximum output
power is unchangeable, the PA gain needs to be reset to avoid the over-power alarm. Followings
are some examples of PA gain setting while the BTS adds channel(s). We suppose that the output
power of each BTS channel is 43dBm, and the cable loss is 3dB.
1. BTS is upgraded from 2 Channels to 3 or 4 Channels
2 channels combination: PA gain setting Gdown=11dB
Channel 1
Tx/Rx
P1=43dBm
Combiner
Channel 2
Tx/Rx
Diversity
receiver
Rx
P2=43dBm
Loss=3dB
BTS0
ANT0
Outdoor booster
BTS1
22
Booster output power
Pout=51dBm
ANT1
Booster Input power
Pin=40dBm
BTS
PA Gain Setting
Gdown=11dB
TMA Gain setting
Gup=8~12dB
Maintenances and Managements
3 channels combination: PA gain setting Gdown=8dB
Channel 1
Tx/Rx
P1=43dBm
Combiner
Channel 2
Channel 3
Tx/Rx
Tx/Rx
P2=43dBm
Loss=3dB
Loss=3dB
BTS0
ANT0
Outdoor Booster
BTS1
Booster output power
Pout=51dBm
ANT1
Booster input power
Pin=43dBm
P2=43dBm
PA Gain Setting
Gdown=8dB
TMA Gain Setting
Gup=8~12dB
BTS
4 channels combination: PA gain setting Gdown=8dB
Channel 1
Tx/Rx
P1=43dBm
Combiner
Channel 2
Channel 3
Tx/Rx
Tx/Rx
Tx/Rx
BTS0
ANT0
Outdoor Booster
P2=43dBm
P1=43dBm
Combiner
Channel 4
Loss=3dB
BTS1
Loss=3dB
ANT1
Booster Input Power
Pin=43dBm
PA Gain setting
Gdown=8dB
Booster Output Power
Pout=51dBm
TMA Gain Setting
Gup=8~12dB
P2=43dBm
BTS
If 2 channels connect to booster as the following figure, the output power of BTS won’t be
changed when the BTS is upgraded to 3 or 4 channels. And there’s no need to reset the PA gain
of the booster.
P1=43dBm
Channel 1
Channel 2
Tx/Rx
Tx/Rx
P2=43dBm
Loss=3dB
Loss=3dB
BTS0
ANT0
Outdoor Booster
BTS1
PA Gain setting
Gdown=8dB
Booster output power
Pout=51dBm
ANT1
Booster input power
Pin=43dBm
TMA Gain Setting
Gup=8~12dB
BTS
Usually, the combination loss of 2 channels is 3dB, and there are there’re differences between
various types of BTS. For example:
2. 1~6 channels combination of Ericsson or Nokia BTS
23
Maintenances and Managements
P1-6=40dBm
Channel 1
Tx/Rx
Channel 2
Tx/Rx
Channel 3
Tx/Rx
Channel 4
Tx/Rx
Channel 5
Tx/Rx
Channel 6
Tx/Rx
PA Gain Setting Gdown
Loss=3dB
Combiner
Diversity
receiver
BTS0
ANT0
Outdoor Booster
BTS1
Booster output power
Pout=51dBm
ANT1
Booster Input power (Pin)
TMA Gain setting
Gup=8~12dB
Rx
BTS
For the above combination method, the PA gain setting should be 1.5dB low with one channel
increasing.
The above is a reference of booster gain setting when the BTS is upgraded. The general principle
is to confirm the booster input power (Pin). Please contact the technical support of Bravo Tech Inc.,
so as to make sure that the booster works normally after the BTS is upgraded.
3.2.3 Alarm and Remote Shutdown Port Specification
The alarm and remote shutdown port is shown in Figure 24, which is a 19PIN circular push-pull
socket. The relevant pins will be short circuit when there is an alarm or shutdown, and the relevant
pins will be open circuit when the system is normal. The specification of alarm and remote
shutdown port is shown as Table 9.
Figure 24 Alarm and Shutdown Port
24
Maintenances and Managements
Item
Alarm indicator
Specification
Relevant Pins
Notes
1
---
Shut down by remote control
Pin 1, Pin 9
Not an alarm
2
WORK
Summary alarm
Pin 2, Pin 10
3
LNA0/ LNA1
LNA alarm
Pin 3, Pin 11
4
PA-POW
Over power alarm
Pin 4, Pin12
5
TEMP
Over temperature alarm
Pin 5, Pin13
6
VSWR
Over VSWR
Pin 6, Pin14
7
---
+12 output
Pin 7
Not an alarm
8
---
GND
Pin 15
Not an alarm
Table 9 Specification of alarm and remote shutdown port
25
Technical Specifications
4 Technical Specifications
RX Characteristics
Specification
Frequency Range
890-915MHz
Instantaneous Bandwidth
25MHz
Max Gain
15±1 dB
Adjustable Gain Range
0~15dB
Flatness over Frequency
≤±1dB
Noise Figure
2.5dB Typical
Output 1dB Compression (max. Gain)
+15dBm
Output IP3 (max. Gain)
+23dBm
Return loss(VSWR)
14dB (1.5:1)
TX Characteristics
Specification
Frequency Range
935--960MHz
Instantaneous Bandwidth
25MHz
Number of Carriers
4 or 8 carriers
Output Power
150W
Input Power
30~43dBm
Gain
Gain Flatness
0 - 15dB(+/-0.5dB)
Adjustable in 1dB step
+/-1dB
Gain Variation Over Temp
+/-1dB
IMD
-65dBc for multi-carrier (typical)
Spectrum Masks and Spurious
Emissions
System Characteristics
FCC compliant
Specification
Return loss(VSWR)
BTS Ports
14dB (1.5:1)
Antenna Ports
14dB (1.5:1)
Monitor & Control
LNA Conditions, PA Conditions, Temp, VSWR, TX Gain Setting, RX
Gain Setting
Alarm & Protection (Form C type)
Overpower Shutdown, Over Temp Shutdown, VSWR Fail Shutdown
Environmental Characteristics
Specification
Operating Temperature Range
-20˚C to +55˚C
Cold Start Temperature
-40˚C
Storage Temperature
-40˚C to +85˚C
Humidity
5%~95%
EMC
ETS 300 342-3
Ingress Protection Class
IP55
Mechanical Characteristics
Specification
Material
Steel& Aluminum Frame
Weight
50Kg
26
Technical Specifications
Dimensions (H x W x D)
706mm x 216mm x 437mm
RF Connectors
BTS Ports
7/16 DIN female
ANT Ports
7/16 DIN female
ALARM Port
Circular Pull-push male, 19PIN
Reliability Characteristics
Specification
MTBF
MCPA
100,000 hours
Rectifier
70,000 hours
Fan
50,000 hours
Other Parts
150,000 hours
Options
Specification
Power Input
100-260V AC
27
Appendix
5 Appendix
Terms/Acronyms/Abbreviation
Definition
ANT
Antenna
AWG
American Wire Gauge
BTS
Base Transceiver Station or Base Transceiver System
°C
Degree Celsius
CDMA
Code Division Multiple Access
COM
Serial Communication Port
CQT
Call Quality Test
dB
Decibels
dBm
Power measurement referenced to the specific power level of one watt
DIN
Deutsches Insitut für Normung eV (German standards institution)
7-16 DIN
German standards RF connector:
7mm OD of inner contact, 16mm ID of outer contact.
DL
Downlink
DT
Driver Test
EMC
Electromagnetic Compatibility
LNA
Low Noise Amplifier
MCPA
Multi-carrier Power Amplifier
MHz
Megahertz
MTBF
Mean Time Between Failures
OMC-R
Operation Monitor Center - Radio
PA
Power Amplifier
RF
Radio Frequency
RX
Receive or Receiver
TX
Transmit, Transmitter
VSWR
Voltage Standing Wave Ratio
28
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