background image

 
 

14 | 

P a g e

 

 

 

 

 

INSTALLATION 

 
 
DO NOT APPLY A.C. POWER TO THE UNIT  UNTIL CABLES ARE 
CONNECTED TO BOTH PORTS OF THE BDA AND THE ANTENNAS.  

 
 
1. 

Set the BDA on the floor or mount on a wall (where applicable). Using appropriate screws 

and anchors, attach the BDA to the wall at the four mounting holes on the side flanges. 
(Special version not shown in this manual).

 

 

2. Ensure that the isolation between the base station antenna and the mobile antenna 
should be at least 12 dB higher than the BDA gain  (Use the higher of the Uplink and 
Downlink gains reported on the BDA test data sheet).

 

 Isolation less than this value can cause gain ripple across the band. Isolation equal to 
or less than the BDA gain will give rise to oscillations which will saturate the amplifiers 
and possibly cause damage to the BDA.  

 

3. Connect the cable from the donor antenna to the BDA connector labeled “BASE” and the 
cable from the service antennas to the BDA connector labeled “MOBILE”. 
 
4. See main Panel of the BDA and verify that both of the Uplink and Downlink attenuation is 
set to 30 dB via dial Attenuator.   
 
5.  Connect the AC power cord to the BDA and then to the power source. Verify that the 
“Power ON” lamp is illuminated.  
 
Installation of the BDA is now complete. To adjust the gain controls to suit the specific signal 
environment, refer to the next section of the manual. 

 

Note:

 

For repeat installations of existing equipment, make sure the attenuation is 

positioned to its maximum setting (30 dB). After verification attenuation, follow the 
above steps starting with step 1. 

 
 
 
 
 

Summary of Contents for BDA-SMR/N-37

Page 1: ...Installation and Operating Manual BDA SMR N 37 37 90 AB SMR N Bi Directional Amplifier ...

Page 2: ...ARNING INDUSTRY CANADA 4 ELECTRICAL SPECIFICATIONS 6 MECHANICAL SPECIFICATIONS 6 ENVIRONMENTAL CONDITIONS 6 MECHANICAL OUTLINE 8 CONNECTIONS 9 AVAILABLE OPTIONAL FEATURES 11 ALARM CONDITIONS 12 VARIABLE GAIN ADJUSTMENT AND LED INDICATORS 13 INSTALLATION 14 OPERATION 15 DIAGNOSTICS GUIDE 16 ANTENNA SEPERATION 16 APPENDIX 1 17 APPENDIX 2 19 ...

Page 3: ...ment shouldn t be used if this protection is impaired The supplied power cord must be used along with an uninterrupted external power source HAZARDOUS LINE AND RF VOLTAGES This symbol is marked on the equipment where dangerous voltages are present Use extreme caution Both RF input and output connectors should be terminated prior to the application of the external AC source Otherwise contact with t...

Page 4: ... EXPOSURE WARNING FCC The ERP limit as defined by the FCC is 37 dBm In order to comply with the FCC RF exposure requirements the antenna installation must comply with the following The Omni directional antenna or leaky cable must be installed so as to provide a minimum separation distance of at least 29 9 cm 11 8 inches between the antenna connected to the RF booster and the human user s body with...

Page 5: ...enuator gives 0 30 dB of attenuation in 2 dB steps The use of these controls is covered in the OPERATION section later in this document BLOCK DIAGRAM DESCRIPTION Figure 1 Block Diagram 1 Diplexer Separates Combines UL and DL pass bands provides needed isolation and selectivity to support system gain 2 Downlink Low noise amplifier and driver Exhibits low noise figure and high linearity 3 Downlink F...

Page 6: ...CIFICATIONS Size 16 4 x8 x15 3 RF Connectors N Type Female Weight 37 8 Lb ENVIRONMENTAL CONDITIONS The unit is designed for indoor applications Operating temperature 30 C to 55 C Storage temperature 40 C to 85 C Composite Output Power 25 dBm 27 dBm 33 dBm 37 dBm Gain Flatness dB 1 5 2 0 1 5 1 5 Noise Figure dB 5 0 Max 4 5 Typ 5 0 Max 4 5 Typ 5 0 Max 4 5 Typ 5 5 Max 5 0 Typ Output Power ALC Set dBm...

Page 7: ...tion OutputComposite Power Typical DC Current Draw 24VDC A Battery Back Up Time Hours Recommend Battery Rated Capacity 20 Hour Rate Amp Hours 37 dBm 3 55 4 17 75 8 35 5 12 53 25 24 106 5 33 dBm 2 47 4 12 35 8 24 7 12 37 05 24 74 1 31 dBm 2 35 4 11 75 8 23 5 12 35 25 24 70 5 27 dBm 2 1 4 10 5 8 21 12 31 5 24 63 Note We do not guarantee specifications under Battery Back Up power ...

Page 8: ...8 P a g e MECHANICAL OUTLINE Figure 3 Mechanical Outline ...

Page 9: ...ctions must be made through cables with characteristic impedance of 50 ohms The BDA AC power is accepted through a standard 3 wire male plug IEC 320 with phase neutral and ground leads The AC power is wired to a high efficiency DC switching power supply which is CE and UL approved The power supply runs the amplifiers and the LED indicators The metal enclosure of the BDA is connected to ground Addi...

Page 10: ...10 P a g e CONNECTIONS Cont Figure 4b Back Panel Connections ...

Page 11: ...er failure Local Alarming via dry contact 9 Pin Connector RM9 A 9 Pin dry contact will be provided to hard wire into a building s alarm system Dry contact will provide alarms for ALC and amplifier failure Local Alarming via dry contact 26 Pin Connector 026 A 26 Pin dry contact will be provided to hard wire into a building s alarm system Dry contact will provide alarms for ALC amplifier failure don...

Page 12: ...arm monitors the current of both the uplink and downlink amplifiers An alarm condition will occur if either the uplink or downlink amplifiers are over or under its current tolerance Additionaly each failure alarm indicator from the available features can be monitored via an alarm monitoring connector 3 contacts per each alarm The following diagram shows a Non Alarm condition If an alarm occurs the...

Page 13: ...LC set UL Alarm Illuminates when the UL amplifier fails External DC LED optional Illuminates when the BDA is operating from a DC source Oscillation detection LED optional Illuminates when oscillation is detected Donor antenna alarm LED optional Illuminates when Donor Antenna is disconnected Mobile antenna alarm LED optional Illuminates when the mobile port is disconnected DL Manual Gain Attenuator...

Page 14: ...s than the BDA gain will give rise to oscillations which will saturate the amplifiers and possibly cause damage to the BDA 3 Connect the cable from the donor antenna to the BDA connector labeled BASE and the cable from the service antennas to the BDA connector labeled MOBILE 4 See main Panel of the BDA and verify that both of the Uplink and Downlink attenuation is set to 30 dB via dial Attenuator ...

Page 15: ...ification ALC function is located in each power amplifier A red LED indicator located on the Front main panel see figure 5 illuminates when output power meets or exceeds the ALC preset point To establish proper operating gain on the Uplink and Downlink sides start with the Downlink Observe the red LED indicator on the Downlink amplifier Units are shipping with maximum attenuation Decrease attenuat...

Page 16: ...een those antennas is 15db above the system gain The amount of isolation that can be achieved between antennas depends on several factors such as the physical vertical and horizontal separation distance between the antennas polarization radiation pattern of the antennas the medium between the antennas antenna gain etc Antenna isolation can most accurately be determined through on site measurements...

Page 17: ...ctors Figure 7a If the donor antenna does not short please connect G Way s special Donor Short Simulator Please note if you intend to use other components i e Lightning Protector between the base port and donor antenna make sure they have an open short N Type Female Female Donor Short Simulator N Type Male Female Donor Short Simulator Figure 7b Conditions for DC Backup Alarm The alarm monitors the...

Page 18: ...18 P a g e Alarm Block Diagram ...

Page 19: ...etween horizontally separated transmitter and receiver antennas dh m the horizontal distance from the centre of interferer antenna to that of the interfered with receiver antenna dv m the vertical distance from the interferer antenna to the interfered with receiver antenna measured from radiation centre to radiation centre f Hz the wavelength of the interfered with system frequency band GTx dBi ga...

Reviews: