INSTALLATION AND OPERATING MANUAL BDA-PS7-2/25W-90-AB BI-DIRECTIONAL AMPLIFIER
TABLE OF CONTENTS PARAGRAPH PAGE NO BDA OVERVIEW BDA BLOCK DIAGRAM DESCRIPTION BDA BLOCK DIAGRAM DRAWING (Figure 1) ELECTRICAL SPECIFICATIONS MECHANICAL SPECIFICATIONS ENVIRONMENTAL CONDITIONS BDA CONNECTIONS MECHANICAL OUTLINE DRAWING (Figure 2 & 2a) BDA INSTALLATION BDA OPERATION UPLINK MECHANICAL OUTLINE- ADJUSTMENT (Figure 3) RF EXPOSURE WARNING DIAGNOSTICS GUIDE Page 2 3 3 4 5 6 6 6 7 8 9 10 11 11
BDA OVERVIEW: The BDA assembly enhances the coverage area of radio communications in buildings and RF shielded environments. The unit features low noise figure and wide dynamic range. It is based on a duplexed path configuration with sharp out of band attenuation allowing improved isolation between the receiving and transmitting paths. BDA BLOCK DIAGRAM DESCRIPTION: Refer to figure 1 for the following discussion.
Figure 1 1. 2. 3. 5. 7. 4. 6. BDA BLOCK DIAGRAM BDA-PS7-2/25W-90-AB 1. Uplink Diplexer - has low passband insertion loss and high selectivity. 2. Downlink Pre-amp - is a low noise amplifier that drives the Downlink HPA and offers 43dB Gain. 3. Downlink PA – is a high power amplifier with an ALC circuit which offers 46dB Gain. 4. Uplink MPA – is a medium power amplifier with an ALC circuit which offers 46dB Gain. 5. Optional Filters – for additional Isolation in 90 dB gain systems. 6.
ELECTRICAL SPECIFICATIONS: Frequency Range Uplink Downlink Pass Band Gain @ min attenuation : 793-805 MHz : 763-775 MHz : 95 dB (Typ.) Variable Step Attenuator Range (2-dB steps) : 0-30 dB Pass band Ripple : ±1.5 dB (typ) 40 dB Bandwidth : 20 MHz (Typ.) Noise Figure @+25°C at max gain : 5.0 dB max.
MECHANICAL SPECIFICATIONS: Size : 16.4 x 15.3 x 8.0 inch : (417 x 389 x 203 mm) RF Connectors : N-type Female Weight : 39 Lbs. (17.7kg.) approx. ENVIRONMENTAL CONDITIONS: The unit is designed for indoor applications: Operating temperature: - 20°C to + 50°C Storage temperature: - 50°C to + 90°C BDA CONNECTIONS The BDA AC power is accepted through a standard 3-wire male plug (IEC-320) with phase, neutral and ground leads.
Figure 2 BDA Mechanical Outline WARNING: NO SERVICEABLE PARTS INSIDE WARRANTY VOID IF COVER REMOVED WARNING: WARNING: THE WARRANTY IS VOID IF THE ISOLATION BETWEEN THE BASE ANTENNA AND THE MOBILE ANTENNA IS NOT CONFIGURED AT LEAST 12dB HIGHER THAN THE BDA GAIN. ISOLATION EQUAL OR LESS THAN THE BDA GAIN WILL RESULT IN DAMAGE TO THE BDA DO NOT PLUG INTO AC UNTIL RF PORTS ARE TERMINATED G−Wave PROUDLY MADE IN THE U.S.A POWER 30 0 2 28 6 8 10 1 30 0 2 4 28 UPLINK 22 24 26 0...
BDA INSTALLATION DO NOT APPLY A.C. POWER TO THE BDA UNTIL CABLES ARE CONNECTED TO BOTH PORTS OF THE BDA AND THE ANTENNAS. 1. Mount the BDA on the wall with the RF connectors pointing DOWN. Using appropriate screws and anchors, attach the BDA to the wall at the four mounting holes on the side flanges. 2. Ensure that the isolation between the donor antenna and the service antenna is at least 12 dB greater than the BDA gain.
BDA OPERATION Refer to Figure 3 & 4 for adjustment access location and label. Variable Step Attenuator BDA gain can be reduced by up to 30 dB in 2 dB steps using the variable step attenuator. Gain adjustment is made with rotary switches accessible via the access door on the BDA enclosure. Arrows on the shafts of these switches point to the value of attenuation selected.
Figure 3 Variable Gain Adjustment Access Downlink ALC and Alarm LED’s Uplink ALC and Alarm LED’s Power LED DOWNLINK UPLINK 0 30 0 30 Uplink MGC Page 10 Downlink MGC
RF EXPOSURE WARNING The antenna used for this transmitter must be fixed-mounted on outdoor permanent structures. In order to satisfy the FCC RF exposure requirements, the BDA/antenna installation must comply with the following: The downlink indoor antenna (Omni type or similar directional antenna) must be installed so as to provide a minimum separation distance of 0.35 meters (35 cm) between the antenna and persons within the area. (This assumes a typical antenna with Unity gain (VSWR >?> 1.
