TMB Manual

Model : RS220-TMB-43J

Tower Mounted BoosterFor GSM 20W


Please pay attention the points below before using the equipment.

1. Avoid the excessive impact when transporting and installing the equipment.

2. Please confirm the power voltage before connecting the power.

3. Please confirm the power polarity before using it.

4. Please pay attention to the equipment connection condition and ground connection.

5. The equipment needs 30 minutes’ preheating.

6. Avoid using in the condition of strong sunshine, sudden temperature change, high humidity, dust and strong magnetic field.

7. Please refer to the installing method when installing the equipment and it’s better to install panel to avoid strong sunshine.

8. Please don’t change the control terminal and parts at will.

9. Please contact us when you need to repair and change the structure of the equipment.


Contents

I. Introducing the TMB-20W system1. Concept of TMB-20W system2. GSM BTS & TMB connection diagram3. TMB Basic Block Diagram4. System Specifications5. Description of Components & Modules6. Description of External connectors7. Connection of power source

II. Operating the control & monitor software1. Operating S/W (TMB Monitor) install2. Preparing to use TMB Monitor3. TMB Monitor connecting test4. Check and control TMB5. Release the connection to Main Control Board6. Default condition

III. Assembly & Tower Top Install1. Wall Mounted type2. Circular Metal Pipe Mounted type


I. Introducing the TMB-20W system

1. Concept of TMB-20W The equipment is necessary in the place where the quality is improved and the service scope is extended by GSM system and TMB (Tower Mounted Booster).The equipment uses duplexer with good isolation which deletes unnecessary signal and has small input loss. Compared with TTLNA (Tower Top LNA) which only improve receive path of downlink, this equipment improves both uplink and downlink through adding power amplifier. It has also bypass mode on the equipment structure, which can prevent the service from interrupting when something happens. So the equipment can suit different environment.The equipment is composed of Duplexer, Power Amplifier, Low Noise Amplifier, By-Pass Mode Switch, communication and control part, DC-DC Converter and body.The equipment suit for the place below: The place where the coverage of GSM base station need to be extended.The place where the service need to be improved in subway and building.The place where there are a few residential building.The place where radio wave is obstructed by the high building in urban area.


2. GSM BTS & TMB Connection Diagram

GSM signal is sent and received from base station to TMB. The output part of base station is connected with Bias-T, which can supply power to TMB.

GSM base station is connected with TMB with RF Cable which can transmit DC Voltage supplied by Bias-T and GSM signal to TMB.

GSM signal is forwarded to antenna after it is amplified by the HPA of Down Link Path. The weak signal inputted antenna is separated into noise and signal by LNA installed in TMB, then it is transmitted to base station.

The antenna installed in TMB supplies the sending and receiving GSM signal service, and the signal is transmitted to TMB.

We can monitor and control TMB in distance through the data communication such as control, monitor and alarm which is realized by the RS-422 cable

3. TMB Basic Block Diagram

TMB

GSM BTS

NMS box

Note BookDC IN(-48V)

Down Link

Up Link

Extend the coverage of down and up link

Outdoor Bias-Tee


4. System Specifications

4-1. Electrical Specifications

DC INPUT

BTS ANT

BTS Duplexer

ANT Duplexer

Down Link Bypass

Up Link Bypass

Tx Module

Rx Module

S/W1 S/W2

GND

DC / DC Converter

MCU

RS-422

NMS box

RS-232

Note Book(PC)


ParameterSpecifications

RemarkDown Link (Tx) Up Link (Rx)

Frequency Range 935~960MHz 890~915MHzBandwidth 25MHz

Gain 18.0dB Min. 18.0dB Min. Attenuation ZeroRipples 1dBp-p Max.VSWR 1.4 : 1 Max

Bypass Loss 3.0dB Max. Bypass modeAttenuator step Range 15dB / 1.0dBAttenuator Tolerance ±1.0dB

Tx/Rx Isolation 80.0dBc Min.Maximum Input Power +40.0dBm -40.0dBmMinimum Output Power +43.0dBm(20W) - Tx Monitor(0dBm±1dB)

1CP +45.0dBm Min. - Maximum GainIP3 - +27.0dBm Min Maximum GainIMD -30dBc Max. - +40.0dBm 2Tone

Noise Figure - 2.0dB Max. Maximum GainDC power -48VDC

Operating Temperature -30~+60 Gain Variation : ±1.0dBHumidity 5~95%

Connector Type 7/16“ DIN Type( Female )

4-2. Control functions & Alarms

4-1-1. Control & Function

- Tx Attenuation Control : Gain 3~18dB/1dB Step- Rx Attenuation Control : Gain 3~18dB/1dB Step- Down Link (Tx) Module : Bypass Mode & Normal Mode- Up Link (Rx) Module : Bypass Mode & Normal Mode- Tx Power Monitor

4-1-2. Alarms

- Down Link (Tx) Module Output Over Power Alarm : +44dBm min- Down Link (Tx) Module Input Low Power Alarm : < +20dBm under- Down Link (Tx) Module VSWR Alarm : HPA Only 2.0:1- Down Link (Tx) Module AMP DC Fail Alarm : Normal +25V ~+30V- Down Link (Tx) Module Over Temp. Alarm : +85- Up Link (Rx) Module Fail Alarm- DC/DC Fail Alarm : Low Voltage & Over Load


4-3. Reliability Test

4-3-1. Lightning Surge TestTest Condition

Reference IEC 61000-4-5Test level (Voltage/Current) 8KV / 4KA (8/20 Pulse)

Generator source impedance 2 ΩPolarity of the surge +, -

Number of tests Five positive and negative at the selected pointsRepetition rate Maximum 1/min

4-3-2. Vibration TestTest Condition (sine)(1oct/min)

Reference IEC 68-2-6Displacement amplitude 3.5mm

Acceleration 10m/sec2

Frequency Range 5~10Hz 10~200HzAxes of Vibration 3axes

Duration 3X5 sweep cyclesSate of specimen during conditioning Unpacked switched off

4-3-3. Free fall TestTest condition

Reference IEC 68-2-32Fall height 1.0m

Times Once on each surfaceSample status Packing status

4-3-4. Temperature &Humidity Test (Rising and drop time 1/min)-High temperature test :+60 2Hour maintenance (Recovery time at least 2hour)-Low temperature test :-30 2Hour maintenance (Recovery time at least 2hour)-Humidity test : +40, 5%~95%,3Hour maintenance (Recovery time at least 1hour)

Each Test must be measured after recovery time

4-3-5. Artificial rain test

Reference IEC 60068-2-18


Water drop height 2MWater drop strength 60mm/h

Duration time 4 HourNozzle angle variation -90 ~+90

Water temperature 25-Sprayed water test : 25 4Hour Maintenance

5. Description of Components & Modules

Tx(HPA) and Rx(LNA) Module has RF character which can expand the cell coverage. There is

also RF switch which can change the system into Bypass Mode when there is some problem

with the system. Normally the system use the sending and receiving amp through the path of

down link and up link. When the system alarm happen, it can change into bypass mode, which

can prevent the system form stopping.

The arrester in the antenna can cut off the surge signal, which can prevent parts inside the

system from the fatal damage.

Bias-T in the input part transmit GSM signal and DC from base station to TMB. The DC can be

used as inside power of TMB. The parts also can cut off the surge signal from outside..

Duplexer is installed in the in/out part of TMB, which separate and combine the signal of Down

Link and Up link.

Main Controller Unit controls and monitors HPA and LNA of TMB. We can use Control & Monitor

Software to judge equipment condition through use interface on PC monitor.

5-1. Description of Rx Module (LNA)

Rx Fail Alarm


The max gain is 18dB, and the min gain is 3dB. The gain control range is 15dB and we

can control the gain through PC monitoring software.

When there is problem with LNA and HPA, Rx module fail alarm will work and send

message to MCU. MCU will change the Rx module into bypass mode after receiving the

message.

5-2. Description of Tx Module (HPA)

HPA is main active module of down link path, which can amplify signal from base station from

3dB to 18dB.

In order to control gain, we install 1dB Step 15dB Digital attenuator in input part and we can

control the gain control through Control & Monitoring Software.

HPA is working on main path when power is on. When Amp DC fail, VSWR Alarm, Over

Temperature Alarm, Over Power Alarm happen, the equipment will change to bypass mode

through the RF Switch in the module.

Amp DC Fail is that when the +27V supplied to HPA is not normal, Alarm will happen and

notify

MCU. DC Fail can’t makes HPA work, the equipment will change to bypass mode.

VSWR Alarm is that detects the reflected radio wave from HPA output port to antenna out port.

The detected reflect power change to voltage then it is sent to MCU. MCU decide final VSWR

Alarm according to program then the equipment will change to bypass mode.

Up Link Bypass

Down Link Bypass

Low Input Alarm FWD Monitor VSWR Alarm

Amp DC Fail


Over Power Alarm is that detect the output power and change it into voltage and send it to

MCU. If the voltage is over the over power level in the PC software, the equipment will change

to bypass mode.

Over Temperature Alarm is that Digital Temperature Sensor installed in the HPA can detect HPA

Temperature. If Temperature is over the limited data, the alarm will happen. The temperature on

HPA have the relation with HPA character and life, so the user should set the reasonable

limitation according to around environment. The manufacture’s advised temperature limitation

range is 80 ~ 90.

DC-DC Fail is that when the power is out of the range of +12V~+27, DC-DC Converter will send

Alarm to MCU. MCU will make the HPA and LNA into bypass mode.

Input Low Power Alarm is that there is a circuit in HPA that check the power from base station

and change it to definite voltage then transmit it to MCU. It will be transmit to PC installed

Monitoring Software after A/D conversion and user can check it. When the inputting signal to

TMB is less than +20dBm, alarm will happen. Because TMB doesn’t have problem, the

equipment will not change to bypass mode.

5-3. Description of NMS box

5-3-1. General

NMS box of TMB disposes the alarms from TMB and use it as the external alarms of BTS. The NMS

box can be extended to remote monitoring from remote NMS center.


5-3-2. External connection and marks

Figure1. External connection and marks of NMS box

1. NMS box alarm:

1）FWD output over power alarm (TX_OP): red (alarm), Kelly (normal);

2）FWD input low power alarm (TX_LP): red (alarm), Kelly (normal);


3）RVS module failure alarm (RX_F): red (alarm), Kelly (normal);

4）FWD VSWR alarm (VSWR): red (alarm), Kelly (normal);

5）Bypass alarm (B_P): red (alarm), Kelly (normal);

6）Short message receiving/transmitting (SMS) and status: the light flash at frequency of

0.5Hz when CPU working; it lights on for 3 seconds when receiving/transmitting short

message; it lights on or off when communication failure or CPU failure; when the failure

recovers, the light recovers to normal status.

2. NMS box alarm (orange connector counted from the right side):

1 connected to FWD output over power alarm; 2 connected to BTS grounding port;

3 connected to FWD input low power alarm; 4 connected to BTS grounding port;

5 connected to RVS module failure alarm; 6 connected to BTS grounding port;

7 connected to FWD VSWR alarm; 8 connected to BTS grounding port;

9 connected to bypass alarm; 10 connected to BTS grounding port.

3. RS422 interface (green connector counted from right side):

1 connected to blue wire; 2 connected to yellow wire; 3 connected to brown wire;

4 connected to cyan wire; 5 connected to the rest 4-core wire (grounding wire, can connect or

disconnect according to the site situation).

4. Input power

Input voltage: -48V or +24V (pls see the marks on NMS box), the power is input by the plugwith

power wire; the plug polarity is marked on the NMS box;

Power wire polarity: green is + (high level) and black is – (low level);

-48V input: green wire to ground; black wire to –48V;

+24V input: green wire to +24V; black wire to ground.

Power switch: circle downwards means power on and circle upwards means power off (with

words of “OFF”).

5. Working mode:

Two working mode: REMOTE and LOCAL, can be chosen by switch.

REMOTE mode: can monitor the TMB through remote NMS center or NMS box.

LOCAL mode: can monitor the TMB through local PC. Switch to “LOCAL” when commissioning

by PC. After local commissioning by PC, pls switch it to “REMOTE”.

6. Alarm level switch

NMS box can achieve “-“ level alarm and “+” level alarm by the 2 bits switch marked SW3 inside

NMS box. When one or two switches are switched to “-“, it means “-“ level alarm; when two switches

are switched to “+”, it means “+” level alarm. The alarm level satisfied the TTL standards and

every output ensure current of 5mA.

5-3-3. Notice


1. When the working mode is switched to “LOCAL”, if we use local software by PC, the alarm

lights and alarms are working normally; if we do not use local software by PC, the alarm lights

and alarms are not in normal status.

2. When the working mode is switched to “REMOTE”, the light of short message receiving /

transmitting and status has function of communication failure indication; If the NMX box lose

communication with TMB beyond 10 seconds, the light always on or off; if the communication

failure is removed, the light recovered to normal working; when the working mode is switched to

“LOCAL”, the light cannot indicate the communication status.

3. When FWD output <33dBm or FWD input <20dBm, low power alarm occurs.

6. Description of external connectors

Tower Mounted Booster

BTS RF ConnectorThe port is DIN Type connector connected with base station, which -48V DC and RF signal

is input.

1

23

4


RS-422 Data Communication ConnectorIt is Mini Circular type connector which connect PC and Main Control Unit in TMB.

Antenna Port Coupling ConnectorSMA connector monitor RF signal to or from Antenna.

Antenna RF ConnectorIt is DIN Type connector connected with antenna.

7. Connection of DC power source

TMB Power Source use -48V from base station. Bias-T and 2-Pair Cable Assembly supplied

with the equipment is connected with BTS Port to support power.

2-Pair Cable Assembly Circular Connector in blue and write is connected with Bias-T. Pay

attention to Terminal +and -.

II. Operating the control & monitor software

BLACK(GND)

BLUE(-48V)To Outdoor Bias-Tee

From BTS


1. Operation S/W (TMB Monitor) install

1.1. Double click TMBSetup.EXE

1.2. Choose the operation language and click


1.3. Click “next.

1.4. Choose the folder to install program and click


1.5. Click


1.6. Input user name and company name and click

1.7. Choose folder and click


1.8. Choose folder and click

1.9. Click

1.10. Start installing.


1.11. Reset computer if need


1.12. Click

1.13. Display the icon blow in bottom after installing the program

2. Preparing to use TMB Monitor

2.1. Connecting data converter

To use monitoring S/W need preparing data converter to connect it with body.

2.2. Connecting with TMB

2.2.1. Operating program

Double click icon in bottom.

2.2.2. Waiting picture (Flash screen)

Waiting picture as below.


2.2.3. First starting picture

2.2.4. Confirm version

Click version in icon menu.


2.2.5 Setting communication

Click (Option) and set serial port as below.

2.2.5.1. Port : Choose the communication port to connect TMB with computer.

2.2.5.2. Speed : Choose the port using data converter. TMB default is 19,200bps.

* The environment varieties the user use as below.

Parameter Default Remarks

Port COM1 Changeable

Speed 19200 Changeable

Data Bit 8 Don’t Change

Parity Bit NONE Don’t Change

Stop Bit 1 Don’t Change

Flow Control NONE Don’t Change

2.2.6. Click after finishing setting the data.

2.2.7. Click (communication connecting).


3. TMB Monitor connecting test

If you set the communication port correctly, there will be progress bar in left bottom when you try

connecting them.

3.1. Default Status

Display the picture as below after connecting.

3.2. Status Bar

Status Bar on the bottom display connecting progress, model name, manufacturer,

version, date and time.

3.3. If the connecting isn’t correct, there will be no change in the picture and as the

following figures.

[Figure] Selected serial port don’t exist.


[Figure] Selected serial exist but no data communication with TMB.

Check the data cable connection or port configuration, and try again.

Some conditions you can’t connect to the TMB are:

* There is not support power on TMB.

* The cable connect host computer and TMB is not linked correctly.

* The serial port configuration on the host computer is wrong port or speed.

4. Check and control TMB

4.1 Output Status

Down Link (Tx) Module Power (dBm) : Display Down Link (Tx) Module Output Power

4.2 Control


4.2.1 Down Link (Tx) Module Attenuation

1) Display Down Link (Tx) Module Attenuation data

2) Default data is 15dB Attenuation.

3) Down Link (Tx) Module Attenuation range : 1dB to 15dB.

4) If Attenuation data increases, Gain will decreases.

4.2.2 Up Link (Rx) Module Attenuation

1) Display Up Link (Tx) Module Attenuation data.

2) Default is 10dB Attenuation.

3) Up Link (Rx) Module Attenuation range: 1dB to 10dB.

4) If Attenuation data increases, Gain will decreases.

4.2.3 Over Temperature Level

1) Setting Down Link (Tx) Module’s temperature limitation..

2) The default is 85’C .

3) Over Temperature Level range is 40’C to 120’C

4) If the temperature exceed the setting Level, Down Link (Tx) Module will bypass.

4.2.4 Over Power Level


1) Setting Down Link(Tx) Module’s max output limitation.

2) The default is 44dBm.

3) Over Power Level range is 33dBm to 44dBm

4) If Down Link (Tx) Output Power exceeds the setting Level, Down Link (Tx) Module

will bypass.

4.2.5 Tx Module

Display and change Tx Module’s condition.

4.2.5.1. Picture below display the condition when Module Bypass is on.


4.2.5.3. Click the icon when you want to change the condition.

4.2.6 Rx Module

Display and change Rx Module’s condition.


4.2.6.2. Picture below display the condition when Module Bypass is off.

4.2.6.3. Click the icon when you want to change the condition.

4.3 Alarms


4.3.1 VSWR Fail

1) If the VSWR of system exceeds the system specification, the alarm will be on.

2) : Normal . : Alarm (VSWR Fail).

4.3.2 Output Over Power

1) If the Down Link (Tx) Module Output Power exceeds the setting value, the alarm will be


on.

2) : Normal. : Alarm (Output over power).

4.3.3 Input Low Power

1) If the input power to Down Link (Tx) Module exceeds the specification, the alarm will be

on.

2) : Normal : Alarm(Input Low Power)

4.3.4 AMP DC Fail

1) If the Down Link(Tx) Module’s voltage exceed or less the specification, the alarm will be

on.


2) : Normal. : Alarm(AMP DC Fail)

4.3.5 Up Link (Rx) Module Fail

1) If Up Link (Rx) Module is not normal, the alarm will be on.

2) : Normal. : Alarm(Rx Module Fail)


4.3.6 DC-DC Fail

1) If DC-DC Module isn’t normal, the alarm will be on.

2) : Normal. : Alarm(DC-DC Fail)

4.3.7 Over Temperature

1) If the system temperature exceeds the setting temperature value, the alarm will be on.

2) : Normal. : Alarm(Over Temperature)


4.4 Reset Alarm

4.4.1 If the alarm is on, you must turn it off for working on normal mode again.

4.4.2 To release the alarm click .

5. Release the connection to Main Control Board

After monitoring or controlling, click to finish communicating with TMB before close the

program. After closing the communicating, Status Bar displays “Disconnected”


6. Default condition


III. Tower Top Install & Assembly

TMB can be installed in two type.

- Wall Mounted Type

- Circular Metal Pipe Mounted Type

TMB can’t be installed in the place in the strong shine sun. If impossible, the equipment should be

covered with panel.

There is Mounted Hole(M4) in the body of the equipment, through which you can set cover.

1. Wall Mounted Type

TMB is stick with two sub bracket as ③ in the picture when delivery.

Sub bracket is fixed to the side of equipment. In order to fix

TMB on the wall you should fix bracket on the wall first, then

assemble the equipment.

2. Circular Metal Pipe Mounted Type


In order to fix the round pipe on the equipment, you should need clamp panel and round clamp

bracket⑦.

The way of installing bracket is as below:



Documents

TMB Manual