Related Manuals for G-Wave BDA-PS8NEPS-20/20-70-M
Summary of Contents for G-Wave BDA-PS8NEPS-20/20-70-M
- Page 1 Installation Operating Manual BDA-PS8NEPS-20/20-70-M BDA-PS8-20/20-70-M BDA-PS7W-20/20-70-M BDA-PS9-20/20-70-M Single Band Mini Bi-Directional Amplifier...
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Page 2: Table Of Contents
Table of Contents SAFETY OPERATION INSTRUCTIONS ...................... 3 OVERVIEW ................................ 4 FCC NOTE ..........................4 IC NOTE ............................4 NOTE ............................4 RF EXPOSURE WARNING- FCC ..................... 4 GENERAL OPERATIONAL DESCRIPTION .................... 5 ELECTRICAL SPECIFICATIONS ........................ 6 MECHANICAL SPECIFICATIONS ........................ 7 ENVIRONMENTAL CONDITIONS ........................ 7 AVAILABLE, OPTIONAL FEATURES ...................... 8 ALARM CONDITIONS ...................... -
Page 3: Safety Operation Instructions
SAFETY OPERATION INSTRUCTIONS BEFORE USE Review this manual and insure that all conditions are compatible with the amplifier's specifications. Safe operation may be impaired if this equipment is not used as intended. GENERAL DESCRIPTION This symbol is marked in the manual and denotes important safety operation instructions. Please read carefully before continuing. This equipment is suitable for a wide variety of scientific, industrial, laboratory and communication applications where high levels of electromagnetic ... -
Page 4: Overview
OVERVIEW The BDA assembly extends the coverage area of radio communications in buildings and RF shielded environments. The BDA has dual RF paths to extend coverage in two distinct frequency bands. The unit features low noise figure and wide dynamic range. It is based on a duplexed path configuration ... -
Page 5: General Operational Description
GENERAL OPERATIONAL DESCRIPTION The BDA Downlink path receives RF signals from the base station and amplifies and transmits them to the subscriber. The BDA Uplink path receives RF signals from the subscriber and amplifies and transmits them to the base station. The Uplink and Downlink occupy two distinct frequency bands. See table on page 6 for list of bands and corresponding band codes. Frequencies applicable to your unit will also be on unit’s specification sheet. The diplexer 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. The Mini‐BDA can be used as a line amplifier. With an optional external bias‐tee, the Mini‐BDA will function with power coming from the In‐building antenna. P a ge ... -
Page 6: Electrical Specifications
Table 1 DOWNLINK BAND CODE UPLINK BAND BDA‐PS7W‐20/20‐70‐M (US ) 788‐805 MHz 758‐775 MHz BDA‐PS7W‐20/20‐70‐M 798‐806 MHz 768‐776 MHz BDA‐PS7‐20/20‐70‐M (Canada) BDA‐PS8NEPS‐20/20‐70‐M (US) 806‐816 MHz 851‐861 MHz BDA‐PS8‐20/20‐70‐M BDA‐NPSPAC‐20/20‐70‐M BDA‐SMR‐0.15/0.15W‐35‐E 806‐824 MHz 851‐869 MHz BDA‐SMR‐0.5/0.5W‐70‐A (Canada) BDA‐PS9‐20/20‐70‐M (US & Canada) 896‐902 MHz 935‐941 MHz ELECTRICAL SPECIFICATIONS Specifications Typical Frequency Range See Table 1 Pass band Gain @ min attenuation 70 dB Maximum RF Input Signal Level ‐30 dBm Variable Step Attenuator Range 0‐30 dB (2 dB steps) Pass band Ripple ±1.5 dB ... -
Page 7: Mechanical Specifications
MECHANICAL SPECIFICATIONS: Size : 10 x 6.2 x 3.0 inch RF Connectors : N‐type Female Weight : 4.6 Lbs. approx. **Note: May vary per unit, see spec for more accurate information specific to your SKU ENVIRONMENTAL CONDITIONS The unit is designed for indoor applications: Operating temperature: ‐ 30C to +55C Storage temperature: ‐ 50C to +90C Standard Indoor BDA’s are designed to operate in an indoor environment, within typical operating temperature range of ‐30C to +55C, with normal airflow on heat dissipation surfaces of the systems. The AC power supply should be conditioned for normal indoor appliance applications. Standard Indoor BDA’s are NOT designed for outdoor applications where the ambient temperature is outside the recommended range or inside an additional enclosure. This will prevent normal airflow on heat dissipation surfaces of the systems, damaging Amplifiers and the Main Power Supply. Standard Indoor BDA’s are NOT designed for the use with unstable power sources, i.e.: generators. Should these units fail due to conditions not within specified parameters, the warranty will void. G‐Wave may supply BDA’s with additional protection designed for outdoor applications upon request P a ge ... -
Page 8: Available, Optional Features
AVAILABLE, OPTIONAL FEATURES The following options are available, (please review the specification provided with the unit, to verify the features included in your BDA ) Visual Alarms All G‐Wave systems include local visual alarms as a standard. Local visual alarms are LED lights located in the unit that indicate various failures. For a list of corresponding alarms, please see Variable Gain Adjustment and LED Indicators. DC28 Powered DC Only @ + 28 VDC ACSP AC Surge Protection and DC Line Conditioning (Required if powered by generator) RM9 9‐Pin connector to enable remote alarming via dry contact. Alarms include: Uplink Amplifier Failure, Downlink Amplifier Failure, Uplink ALC, Downlink ALC. ALARM CONDITIONS The alarm 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. Additionally, each failure/alarm/indicator from the available features may be monitored via an audible alarm dry contact connector, 3 contacts per each alarm .The following diagram shows a Non Alarm condition. If an alarm occurs the trigger will switch the position of the relay, a short will be between COM and N.C. Relay Shown in Non-Alarm P a ge ... -
Page 9: Bda Connections
BDA CONNECTIONS The BDA uses an external power supply which connects through a single pin 15V DC input located on the back of the unit. A optional 9‐pin D‐Sub connector provides failure alarm output contacts. The RF connections are made via two type “N” female connectors. The RF connector labeled “BASE” must be connected to the antenna pointing towards the base station. The RF connection labeled “MOBILE” must be connected to the antenna facing the area to be covered by the BDA. The RF connections must be made through cables with characteristic impedance of 50 ohms. The isolation between the base station antenna and the mobile antenna should be at least 15 dB higher ... -
Page 10: Bda Installation
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. ... -
Page 11: Mechanical Outline
MECHANICAL OUTLINE 11 | P a ge ... -
Page 12: Bda Operation
BDA OPERATION ALC (Automatic Level Control) To minimize intermodulation products, each amplifier in the BDA contains an ALC feedback loop. The ALC circuit senses the output power and limits it to the factory preset level as specified on each product specification. Each amplifier in the BDA contains an ALC feedback loop. The ALC circuit senses the output power and limits it to the factory preset level. A red indicator lamp is located on the interior panel of the BDA and illuminates when the output power exceeds the ALC set point. To establish proper operating gain on the Uplink and Downlink paths, start with the Downlink. Observe the red indicator lamp on the Uplink amplifier. Units are shipped with maximum attenuation. ... -
Page 13: Variable Step Attenuator
Conditions for DC Backup Alarm The alarm monitors the AC power. If the AC power fails and DC is connected, the DC Alarm LED will indicate DC power is drawn. (Relay Shown in Non‐Alarm Condition) 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 of the BDA enclosure. Arrows on the shafts of these switches point to the value of attenuation selected. BDA gain can be determined by subtracting the attenuation value from the gain reported on the BDA Test Data Sheet for that side of the unit. The attenuators are labeled for Uplink and Downlink. (Figure 3a) ... - Page 14 LEDs and Fault Alarms G-WAVE amplifiers are shipped from the factory with 30 dB of attenuation dialed in. Units are not shipped with full gain to ensure input signal does not overdrive the ALC limitation of the unit. If the attenuation rotary switch is dialed to 30 –...
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Page 15: Led Indicator Descriptions And Field Testing
LED INDICATOR DESCRIPTIONS AND FIELD TESTING Alarm LED Description In Field Test Illuminates when the AC voltage is Disconnect AC Power Cable AC Power supplied, the unit is ON, and the AC/DC LED will turn off. power supply is operating. DL Alarm Illuminates when the DL amplifier fails. Disconnect Donor Antenna UL Alarm Illuminates when the UL amplifier fails. Disconnect Donor Antenna Part of Commissioning Procedure. Illuminates when DL composite power DL ALC Enough Gain is required to reach reaches the ALC set. ALC set limit. Part of Commissioning Procedure. Enough Gain is required to reach Illuminates when UL composite power UL ALC ALC set limit. Rule of Thumb: Dial reaches the ALC set. 5 to 10 dB attenuation greater than DL set. Disconnect AC Power cable while External DC Illuminates when the BDA is operating unit is connected to External DC from a DC source. ... -
Page 16: Diagnostics Guide
DIAGNOSTICS GUIDE The BDA provides long term, care‐free operation and requires no periodic maintenance. There are no user‐serviceable components inside the BDA. This section covers possible problems that may be related to the installation or operating environment. Gain Reduction Possible causes: Bad RF cables and RF connections to antennas, damaged antennas. Occasional Drop‐out of some Channels Possible causes: One channel with very strong power dominates the RF output of the amplifier. ANTENNA SEPERATION BDA oscillation is caused by low isolation (antenna separation) between donor antenna and service antennas. The recommended isolation between 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 An antenna isolation measurement configuration is illustrated in Figure 6, where two spatially separated antennas (service antenna #1 and donor antenna #2) are connected to a signal generator and signal analyzer. A signal at center frequency is generated by the signal generator sent to the input of antenna 1; the output of the signal at antenna 2 is measured and recorded by the signal analyzer. With calibrated connection cables, by taking into account the cable loss, the difference of signal power level at the output of antenna 2 and that at the antenna 1 input is taken as antenna isolation. ) (See Appendix 2 for analytical calculation ... -
Page 17: Appendix 1
APPENDIX 1 Conditions for Donor Alarm (26‐pin) This functionality applies only for a Donor antenna with a DC short. Alarm monitors the connection of the BDA to the donor antenna. An alarm condition will occur if there is a disconnect at the donor antenna. Uplink and Downlink amplifiers will shut down. Donor Alarm, Current DL, and Current UL will indicate. Test for DC short between male pin and outer shell of antenna connectors Figure 7a If the donor antenna does not short please connect G‐Wave’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. ... -
Page 18: Appendix 2
APPENDIX 2 Antenna Separation variable definitions: ...