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OVERVIEW: 

 

The BDA-CELLAB/PCSF-33/3380-OCMG assembly enhances the coverage area of 
radio communications in buildings and RF shielded environments. 
 
The BDA-CELLAB/PCSF-33/33-80-OCMG has dual RF paths (Forward / Reverse) to 
improve coverage in two distinct frequency bands.    
 
The unit features low noise figure and wide dynamic range. It is based on a dual 
duplexed path configuration with sharp out of band attenuation allowing improved 
isolation between the receiving and transmitting paths.    

 

BLOCK DIAGRAM DESCRIPTION: 

 

Refer to Figure 1 for the following discussion. 

 

The BDA-CELLAB/PCSF-33/33-80-OCMG Downlink path receives RF signals from 
the base station, amplifies the signal and transmits the signal, without changing the 
frequency, into a Distributed Antenna System at the direction of the mobiles. The 
signal travels over a DAS medium that then dissipates the signal to the Mobile 
subscribers. The BDA-CELLAB/PCSF-33/33-80-OCMG Uplink path receives RF 
signals at the Mobile side from the DAS system, then amplifies it, and transmits the 
amplified signal (without changing the without changing the frequency) to the base 
station. This Dual Band BDA supports two Uplink and two Downlink, CELL AB and 
PSC Full occupy distinct dedicated frequency bands. 
 
For CELL AB Band, the frequency allocations are as follows:  

Uplink: 824-849

 

MHz  

Downlink: 869-894

 

MHz  

For PCS Full Band, the frequency allocations are as follows:  

Uplink: 1850-1910

 

MHz  

Downlink: 1930-1990

 

MHz  

 

 
The Quad-duplexer isolates the paths and route each signal to the proper amplifying 
channel. 
 
An Automatic Level Control (ALC) allows for output power limiting. A variable step 
attenuator 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.  
 
 

 

 

 

Содержание BDA-CELLAB/PCSF-33/33-80-OCMG

Страница 1: ...Installation and Operating Manual RigBooster PRO II Dual Band Outdoor BDA BDA CELLAB PCSF 33 33 80 OCMG ...

Страница 2: ...igure 1 4 ELECTRICAL SPECIFICATIONS 5 MECHANICAL SPECIFICATIONS 6 ENVIRONMENTAL CONDITIONS 6 RF EXPOSURE WARNING 6 CONNECTIONS 7 MECHANICAL OUTLINE DRAWING Figure 2 2a 8 INSTALLATION 9 OPERATION 10 FRONT PANEL Figure 3 BACK PANEL Figure 3a 11 11 DIAGNOSTICS GUIDE INDUSTRY CANADA REGULATION STATEMENT 12 13 ...

Страница 3: ...tion of the mobiles The signal travels over a DAS medium that then dissipates the signal to the Mobile subscribers The BDA CELLAB PCSF 33 33 80 OCMG Uplink path receives RF signals at the Mobile side from the DAS system then amplifies it and transmits the amplified signal without changing the without changing the frequency to the base station This Dual Band BDA supports two Uplink and two Downlink...

Страница 4: ...e Amp Low noise figure amplifier with high linearity 7 Selector Filter CELL UL Features high selectivity and provides required isolation at maximum gain 8 Linear Power Amplifier CELL UL includes ALC circuitry and up to 50 dB Gain 9 Downlink PCS LNA Pre Amp Low noise figure amplifier with high linearity 10 Selector Filter PCS DL Features high selectivity and provides required isolation at maximum g...

Страница 5: ...ain min attenuation 80 dB Min Variable Step Attenuator Range 0 30 dB 2 dB steps Gain Flatness 1 5 dB Typ Noise Figure 25 C at max gain 5 0 dB Typ Composite Output Power Downlink 33 dBm Typ Uplink 33 dBm Typ Maximum Input Signal Level 10 dBm Input Output Impedance 50 Ohms VSWR Input Output 1 5 1 Power Supply 110VAC 1 6Amps 220VAC 0 8Amps 50 to 60 Hz ...

Страница 6: ...ed by 3 5 dB especially where the output signal is re radiated and can cause interference to adjacent band users This power reduction is to be by means of input power or gain reduction and not by an attenuator at the output of the device RF EXPOSURE WARNING In order to comply with the FCC RF exposure requirements the BDA CELLAB PCSF 33 33 80 OCMG antenna installation must comply with the following...

Страница 7: ... to or less than the BDA gain will give rise to oscillations which will saturate the amplifiers and possibly cause damage to the BDA Optional Features OCAG Automatic Gain Reduction When this option is selected the part number will be changed to BDA CELLAB PCSF 33 33 80 OCAG This option protects the BDA from oscillation due to service upgrades Should the input RF signal increase due to a service up...

Страница 8: ...ors current of both uplink and downlink amplifiers An alarm condition will occur if either uplink or downlink amplifiers are over or under its current tolerance Also Oscillation detect Alarm would be provided on the other pair dry contacts Relay Shown in Non Alarm Condition Page 8 ...

Страница 9: ...to the BDA connector labeled BASE and the cable from the service antennas to the BDA connector labeled MOBILE 4 Open the main access front panel of the BDA and verify that both of the attenuator s are positioned to its maximum setting 30 dB Close the main panel 5 Connect the AC power cord to the BDA and then to the power source Verify that the Power ON Green LED indicator is illuminated Installati...

Страница 10: ...lifier in the BDA contains an ALC feedback loop The ALC circuit senses the output power and limits it to the factory preset level of 33 dBm UL and 33 dBm DL ALC function is located in each power amplifier A red LED indicator located on the Front main panel see figure 3 illuminates when output power meets or exceeds the ALC preset point To establish proper operating gain on the Uplink and Downlink ...

Страница 11: ...ould cause damage to the BDA Gain Attenuation This Gain Attenuation Access Panel is located inside the BDA enclosure simply open the lid and the panel below will be directly visible Note Applicable for OCMG model only PCS UPLINK GAIN ATTENUATION CELL DOWNLINK GAIN ATTENUATION CELL UPLINK GAIN ATTENUATION PCS DOWNLINK GAIN ATTENUATION Page 11 ...

Страница 12: ...o antennas damaged antenna or Leaky cable Excessive Intermodulation or Spurious Possible causes Amplifier oscillation caused by insufficient isolation The isolation between two antennae is given by the equation Isolation 92 5 20 Log F x D Gt Gr Where F frequency GHz D separation Km Gt transmit antenna gain in the direction of the receive antenna Gr receive antenna gain in the direction of the tran...

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