BTI Wireless LPA1900 Power Amplifier User Manual

Bravo Tech (Shenzhen) Co. Ltd. Power Amplifier

User Manual

LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.A LPA1900-120-SC01 SPECIFICATION 1. System advantages Bravo Tech Inc’s newly introduced 1930~1990MHz only for CDMA Carrier High Power Outdoor Amplifier platform provides higher downlinks EIRP to extend the coverage of existing cellular networks. The antenna used for this transmitter must be fixed-mounted on outdoor permanent structures. This multi-carrier based product platform can also work with customized BTS to extend capacity of original BTS with a low system total cost. This product platform features: • Support multi-carrier CDMA signals. • Output maximum power 120W, support carriers number up to 4. • Very High System Efficiency • Extensive product monitoring and control (local and remote) • Centralized system control/display/alarms • Great system reliability supported by architecture built-in redundancy • Powered by 30VDCavailable • Extensive protection for lightning, voltage surge, and any high failure rate assemblies • Compact system size and light weight 2. System Block Diagram
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.A 3. Electrical Specifications Parameter spectfication Frequency 1930 ~ 1990 MHz Output Power 120Watts max. ( CDMA2000) Spurious Emission -45dBc@Δf=885-1.25MHz, 30kHz RBW -55dBc@Δf=1.25-1.98MHz, 30kHz RBW -55dBc@Δf=1.25-2.25MHz, 30kHz RBW -13dBm@Δf=2.25-4MHz, 30kHz RBW RF Gain 57.0 ± 1.0dB @ frequency range, +30Vdc, room temp. Normal Operating Voltage +30Vdc±1.0Vdc Operating Voltage +29Vdc ~ +31Vdc RF Gain Variation over Voltage & Temperature ±1.0dB @ +29≤Vsup≤+31V, -30℃ to +55℃ Gain Flatness Peak to Peak 0.2dB over any 5MHz Input/Output Return Loss -18dB min. Output Protection Mismatch protected with isolator Efficiency ≥15%@+30Volts, Po=+50.8dBm Operating Temperature -30℃ to +55℃ (Air Temperature inside System), Operating point Output power:52.0dBm ± 0.5dB Operating range 6dB Input Power ALC B min Over Pwr Output Pwr:52dBm ± 0.5dB 4. Alarm and Functions Specifications TTL output for the alarm pins. Normal is High, Alarm is Low. 4.1 Over temperature alarm Alarm and shutdown at 95℃ base temperature, auto-recover at 90℃ base temperature. 4.2 Over power alarm Alarm and shutdown when output power is over 52.3dBm, no auto-recover. 4.3 ALC 4.3.1 ALC level: 52.0±0.5dBm 4.3.2 ALC range: ≥6dB 4.4 VSWR alarm Alarm and shutdown when reject is over 5, auto-recover at 3.
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 3 5. Description of the connectors 5.1 RF Part Port Name Type Warning Input SMA Female (50Ω) Normal :-6.2dBm maxium input power +1dBm. Output N Female (50Ω) Normal :50.8dBm maxium output power 52.0dBm. 5.2 DC power Port Name Type NO Warning A1、A2 VDC type +30V, range 24~32V DC IN D-Sub type DSCD175PS1M (Male) A3、A4 GND to VDC 5.3 Communication Connector type: USB Note: Manufacturer use to debug. 5.4 LED Indication Figure 1 Power Amplifier Indicators Table 1 Specification of Power Amplifier Indicator Light Item Label Color State Specification MAJOR ALM Red On MINOR ALM Yellow Off 1 RF ON Green Off Power amplifier alarms and shuts down MAJOR ALM Red Off MINOR ALM Yellow On 2 RF ON Green Off Power amplifier alarms but still works MAJOR ALM Red Off 3 MINOR ALM Yellow Off Power amplifier works normally
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 4 RF ON Green On 5.5 Warning 1. Check the power supply voltage is between 24V and 32V or not before electrify, better to setup in 30V. Power of power supply shall bigger than 1400W. 2. Ensure the power supply polarity is right, port A1、A2 are anode, and port A3、A4 are cathode. 3. Ensure the output line is connected and input power is not over load before connect the RF input line. 4. Use the type N connector as output connector, for the high output power, suggest to using the φ3 upwards RF cable to connect. At the same time, output matching demand all right, SWR more than 1.5 is better, but less than 3.0. 5. Product operating should be cooled by air flow, air flow more than 150cfm. 6. Product operating room temperature can’t above 50o ,also can’t below -20o。
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 5 6. Dimension Figure 2 Dimension 399 486 Left Right FrontRear Unit: mm
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 6 Figure 3 Mechanical drawing
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 7 7 Assembly The LPA1900 is assembled to an outdoor Booster. It can be push into the Booster along the guide rail. Figure 4 the guide rail for LPA1900 assembly
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 8 Below pictures show the location of an assembled LPA1900. Figure 5 the front side of an assembled LPA1900
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 9 Figure 6 the rear side of an assembled LPA1900
LPA1900-120-SC01 BRAVO TECH INC Add.: 6185 Phyllis Drive Unit D, Cypress, CA 90630 Phone: 1-714-230-8333 Website: www.bravotechinc.com Revision: SP·LPA1900-120-SC01·REV.APage: 10 There are three ports on the back of LPA1900. The SMA port is input signal port, the N-type port is output port and the D-Sub port is power supply. Figure 7 the location of connectors
Information to the user This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. This device must be installed by a professional installer. The antenna(s) used for this transmitter must be fixed-mounted on outdoor permanent structures. RF exposure compliance is addressed at the time of licensing, as required by the responsible FCC Bureau(s) including antenna co-location requirements acc to §1.1307(b)(3).

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