Powerwave Technologies G3L-1929 Installation & Service Manual Download

Page: 1 / 21

1930-1990 MHz

Installation & Service Manual

G3L-1929- Multi-Carrier Power Amplifier



044-05138 Rev. A

May 2003

Preliminary

Summary of Contents for G3L-1929

Page 1: ...1930 1990 MHz Installation Service Manual G3L 1929 Multi Carrier Power Amplifier Copyright Powerwave Technologies Inc May 2003 All rights reserved 044 05138 Rev A May 2003 Preliminary...

Page 2: ...the documentation and equipment including but not limited to component substitution and circuitry changes Changes that impact this manual may subsequently be incorporated in a later revision of this...

Page 3: ...m The G3L 1929 120 am plifier generates approximately 2300 BTUs of heat at full power The amplifiers are modular in design and ideally suited for use in GSM base stations 1 3 Ordering Information Tabl...

Page 4: ...e 100 120 Hz max Current Consumption 27 5 Amps 27 Vdc 25 C Prf 60 Watts average 32 Amps 27 Vdc 25 C Prf 75 Watts maximum Abnormal Operating Voltage 21 Vdc to below 26 Vdc Above 28 Vdc to 29 Vdc RF Gai...

Page 5: ...axial Contact A2 27 Vdc Power Contact A3 Ground Power Contact A4 RF Output Coaxial Contact 1 TX H 10 27 V 2 TX L 11 COM SV 3 GND 12 AMP AO 4 RX H 13 AMP A1 5 RX L 14 AMP A2 6 GND 15 AMP A3 7 HERE LPA...

Page 6: ...rvice Manual Figure 1 1 Model G3L 1929 120 Amplifier Front Isometric View Figure 1 2 Model G3L 1929 120 Amplifier Rear Isometric View Copyright Powerwave Technologies Inc May 2003 All rights reserved...

Page 7: ...anual Figure 1 3 Model G3L 1929 120 Amplifier Top View Power ON OFF Switch LED Indicator Figure 1 4 Model G3L 1929 120 Amplifier Front Panel Copyright Powerwave Technologies Inc May 2003 All rights re...

Page 8: ...rvice Manual l l 21WA4 Connector Figure 1 5 Model G3L 1929 120 Amplifier Rear Panel Figure 1 6 Model G3L 1929 120 Amplifier Side View Copyright Powerwave Technologies Inc May 2003 All rights reserved...

Page 9: ...line conditioning and surge suppression be provided on the primary AC input to the 27 Vdc power source All electrical service should be installed in accordance with any applicable codes and good engin...

Page 10: ...Powerwave may not accept returns without a return authorization Claims for loss or damage may not be withheld from any payment to Powerwave nor may any payment due be withheld pending the outcome the...

Page 11: ...Specifications Remarks Alarms Controls TTL Level 5 Volts Buffer 74ABT244 5 V recommended Deletion Alarm When unit does not exist HEAR_PAU Equipped GND Deletion OPEN D Line Function Fail Alarm When uni...

Page 12: ...own in figure 3 1 The LED has tri color capability red yellow and green The LED s blinking frequency is 0 5 1 Hz with a duty cycle of 45 55 The LED indicates the status of the MCPA as listed in table...

Page 13: ...ed Re fer to table 1 1 for input power requirements Excessive input power may damage the MCPA NOTE The output coaxial cable between the amplifier and the antenna must be 50 ohm co axial cable Use of a...

Page 14: ...band from 1930 MHz to 1990 MHz refer to table 1 4 for amplifier specifications The amplifier provides a gain of 60 dB to provide a typical output of 70 watts 48 8 dBm Refer to fig ure 4 1 for the ampl...

Page 15: ...main amplifier The error amplifier operates in class A mode The RF signal from the preamp is coupled to an attenuator and phase shifter in the first feed forward loop where it is phase shifted by 180...

Page 16: ...to the same power level as the input sample The signal is then coupled to the error signal of the main amplifier output The final output is monitored by the second loop and adjusted to ensure that the...

Page 17: ...that they are tight Performance Tests 12 Months Perform annual test per paragraph 5 4 Clean Fans Heat Sinks 3 Months Inspect for debris Remove dust with a soft cloth brush or vacuum cleaner 5 3 Test...

Page 18: ...F signals at this time 5 4 1 1 Amplifier Spurious Emissions Test With the RF input signal to the amplifier set to be as shown in Figure 5 1 use the spectrum ana lyzer to measure the spurious emissions...

Page 19: ...5 1 Supply Voltage 27 Vdc 0 1 Vdc Test Specification Min Max Data RF Gain Vcc 27 Vdc PO See table 1 4 Freq 1930 1990 MHz 57 0 dB 58 0 dB Spurious Emissions Vcc 27 Vdc PO See table 1 4 1930 1990 MHz Ba...

Page 20: ...2 Loosen the two thumbscrews that secure amplifier module to the subrack CAUTION When removing the amplifier from the subrack it is very important to support the am plifier such that the rear of the m...

Page 21: ...f Reset toggle switch momentarily to Reset 2 Check for proper power supply voltage 3 Verify all RF connections 4 Verify that unit does not have a major fault red LED on front panel of subrack 5 Contac...