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 File 

Doc. No. 

             Date 

 Version 

Page 

DBHB-20 

5700 9004 055 

Aug 05 

 1.0 

8/12 

 

 

 

Next Generation 
Signal Enhancement 

 

6.3 

Installation Procedure:  Do It Yourself 

 
 

To install DBHB-20 booster, follow the steps as mentioned below: 

 

1.  

Locate weak signal areas by moving around with a mobile phone and the 
SIM card of the cellular operator, and check the signal level indicated by 
the number of bars on the mobile phone display. 

 
2.  

Similarly, locate donor  (outdoor) antenna position by observing the 
maximum signal received from the base station.

  

 
3.  

Unpack the equipment supplied and check as per the packing list. 

 
4  

Mount the donor (outdoor) antenna at the position selected (ref 2 above). 

 

Mount the DBHB-20 booster in the area of weak signal (ref 1 above)  

 

Route the RF coaxial cable and interconnect it with the donor 
antenna and DBHB-20 booster, which is supplied in the installation 
kit.

 

  

Ensure that the three-pin power point has proper earthing 
connection, before switching on the power to booster.

 

 
Please remember the following important points: 

 

i. 

The RF cable must not be kinked, cut or damaged in any way. 

ii. 

Connect the RF cable to the donor antenna taking care to avoid cross 

threading or stripping. The RF connections should be snug and tight. 

iii. 

Seal the outdoor connectors with waterproof sealant (such as M–

seal) or the appropriate weather tight boot. 

 

6.4 

Power Startup / Alarm Checks / Coverage Testing 

 

1.  

Plug in the AC/DC Power Adapter power cord to AC main and other side 
DC plug insert 9V DC socket in Home Booster.  

2.  

When the booster is ON initially all the LED’s will blink two times.  

3.      The system will automatically control the attenuation to keep the both uplink 

and downlink output power at a constant level of 10dBm. The system will 
insert or release the attenuation by 1dB step.    

 

Summary of Contents for DBHB-20

Page 1: ...information contained herein is proprietary to Shyam Telecom Limited Use or disclosure of this document or the information contained herein for any purpose other than that for which it was furnished...

Page 2: ...Booster Theory Background 5 4 0 Description of DBDBHB 20 Booster installation Kit 6 5 0 System Design and Setup 7 6 0 Installing the DBHB 20 7 6 1 Pre installation considerations 7 6 2 Installation T...

Page 3: ...at the following address SHYAM Telecom Ltd A 60 Naraina Industrial Area Phase I New Delhi 110028 INDIA Tel 91 11 51411076 Fax 91 11 51411078 Email repeater shyamtelecom com Under consideration of all...

Page 4: ...e co located or operating in conjunction with any other antenna or transmitter The signal booster with server antenna must be installed to provide minimum 20 cm separation distance between the server...

Page 5: ...indoor areas such as office buildings parking garages apartment buildings shopping malls and residential homes Outdoor areas are degraded by geographic topologies such as mountains valleys dense foli...

Page 6: ...The indoor antenna of DBHB 20 booster provides RF signal in all directions downward and outward from the installation point A adopter is supplied with DBHB 20 powered by universal 90 240 VAC mains sup...

Page 7: ...the received signal level from the base station It is imperative to monitor the received signal level from the base station also called downlink signal Downlink signal may change if some high building...

Page 8: ...e donor antenna and DBHB 20 booster which is supplied in the installation kit 7 Ensure that the three pin power point has proper earthing connection before switching on the power to booster Please rem...

Page 9: ...the SIM card of cellular operator measure and monitor the signal level at various points within and around the perimeter of the coverage area 6 5 Display Details of DBHB 20 UL ALIGN LED will glow aft...

Page 10: ...r different operators world wide Contact SHYAM with coverage area Operator name Nominal Gain 65 dB Min 75dB Max in each band Automatic Gain adjustment 31 dB steps of 1 dB Auto Power Control range 10 d...

Page 11: ...beginning but after few days the performance has degraded 1 The received signal level from the base station might have degraded due to environmental changes such as new building construction and so o...

Page 12: ...l controls accessible to the user for any adjustments to operate in violation of the limits prescribed in this Standard Furthermore information on internal adjustments reconfiguration or programmabili...

Page 13: ...DBHB 20 5700 9004 055 Aug 05 1 0 13 12 Next Generation Signal Enhancement For Customer Use Only SHYAM Telecom Ltd 246 Phase IV Udyog Vihar Gurgaon 122015 INDIA Tel 91 124 5108830 Fax 91 124 5018117 Em...

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