Operation Manual
1930-1990 MHz
G3L-1900-31 (DC) / G3L-1900-31-A (AC)
Wideband Multi-Carrier Power Amplifier
Operation Manual
1930 MHz – 1990 MHz
044-05116 Rev. A June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
© 2002 Powerwave Technologies Incorporated. All rights reserved.
Powerwave Technologies, and the Powerwave logo are registered trademarks
Powerwave Technologies, Inc. reserves the right to make changes to 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 manual.
Powerwave Technologies, Inc. Tel: (714) 466-1000
1801 E. St. Andrew Place (888) 797-9283
Santa Ana, CA 92705 Fax: (714) 466-5800
Web Site: www.powerwave.com
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A ii June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
Section 1 General Description
1-1 Introduction
This manual contains information and procedures for the operation of the model G3L-1900-31
and G3L-1900-31-A Wideband (WCDMA) Multi-Carrier Power Amplifier (MCPA). The manual is
organized into the following sections and appendix.
Section 1 General Description
Section 2 Operation
Appendix A Specifications
1-2 General Description
The amplifiers are wideband, linear, feed-forward power amplifiers (WPAs) that operate in the 60
MHz frequency bandwidth from 1930 to 1990 MHz with an instantaneous bandwidth of 20 MHz.
The amplifier provides linear amplification for single or multi-carrier WCDMA signals. The amplifiers communicate with the base station via a TLCI control interface bus; passing alarm and measurement information to the base station and receiving control information from the base station.
1-3 Hardware Interface
There are three groups of interface connections located on the amplifier chassis. These are RF,
power, and control interface (TLCI bus) as described in the paragraphs that follow.
1-3.1 RF
The RF interface is located on the power amplifier front panel consists of the RF-In (TX-In) and
RF-Out (TX-Out) connectors as shown in Figure 1-1.
1-3.2 Power Supply
Power supply voltages (-48 VDC or 230 VAC) from the base station subrack are connected to the
amplifier via connector X3, pins A – D located on the power amplifier rear panel as shown in figure
1-1. Table 1-1 lists the voltages and descriptions for each pin.
Table 1-1 Primary Power Connections
Signal
Group
AC
X3 Connector
Pin
A L AC Phase (isolated from amplifier
B N AC Zero (isolated from amplifier
C PE AC Protective Ground (connected
Signal Name Description
chassis)
chassis)
to chassis)
D -48VDC DC Minus (isolated from amplifier
DC
E +48VDC DC Plus (isolated from amplifier
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 1-1 June 2002
chassis)
chassis)
G3L-1900-31/G3L-1900-31-A Operation Manual
1-3.3 TLCI Bus Communications
The purpose of the TCLI bus is to provide a communications interface between the power amplifier and base station. The bus is connected from the base station subrack to the X3 connector located on the power amplifier rear panel as shown in figure 1-1. Table 1-2 lists the signal names
and descriptions for each pin of the 24-pin connector.
Table 1-2 TLCI Bus Connections
Signal
Group
TLCI
WPA ID
GND
X3 Connector Pin Signal Name Description
2 AXMTP
3 AXMTN
Ethernet, 10BASE-T
18 ARCVP
19 ARCVN
5 WPA_ID_BIT0 Hard-coded WPA ID
13 WPA_ID_BIT1 BIT0=LSB, BIT!=MSB
21 WPA_ID_BIT2 OPEN=1=Logical High
Gnd=0=Logical Low
1
4
8
9
10
11
Ground Connected to WPA chassis ground
12
17
20
24
Free 6, 7, 14. 15, 16,
Reserved for WPA manufacture
22, 23
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 1-2 June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
1-4 Alarms
The WPA generates the following alarms and communicates then to the base station via the TLIC
bus:
· VSWR
· Gain
· Temperature
· Over-Drive
· Power Supply
· Linearization
The base station is able to query the current alarm status from the W PA. Fault status is cleared at
unit reset which means that any alarm detected after reset is reported to the base station. The
alarm status always represents existing conditions.
1-4.1 VSWR
The WPA supervises the output (load) VSWR and gives the alarm based on the following limits as
listed in table 1-3.
Table 1-3 VSWR Alarm Limits
VSWR Alarm Status Limits
VSWR alarm ON VSWR at the output>6.0:1 @ phase 0-360º
VSWR alarm OFF VSWR at the output<3.0:1 or when the VSWR alarm is dis-
abled @ phase 0-360º
1-4.2 Gain
The WPA supervises the gain of the unit and gives the gain alarm according to the limits listed in
table 1-4.
Table 1-4 Gain Alarm Limits
Gain Alarm Status Limits
Gain alarm ON
Gain alarm OFF Gain is within the specified range or disabled
Gain deviates more than ±1.5 dB from specified nominal
gain or if the carrier cancellation loop is out of lock, the gain
alarm is activated
1-4.3 Temperature
The WPA monitors the internal temperature. The measured temperature must represent the base
plate temperature of the main power amplifier. The alarm is given according to the limits listed in
table 1-5.
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 1-3 June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
Table 1-5 Temperature Alarm Limits
Temperature Alarm Status Limits
Temperature alarm ON Internal base plate temperature is equal or higher
than 92ºC
Temperature alarm OFF Internal base plate temperature decreases more than
10ºC from the alarm on temperature
1-4.4 Overdrive
The overdrive alarm causes an automatic WPA shutdown.
1-4.5 Power Supply
The WPA monitors the internal DC supply voltages and gives the power supply alarm if any of the
voltages are out of the specified range. This alarm causes an automatic WPA shutdown.
1-4.6 Linearization
In case of poor output signal, the linearization causes an automatic WPA shutdown.
1-5 Status Indicator
The status indicator LED is located on the W PA front panel as shown in figure 1-1. 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 W PA as listed in table 1-6.
Table 1-6 Status Indicator Colors
LED Color WPA Status
Red (stable) Manual main-switch turned
standby and no TCP/UDB
connection established
Red (stable) LED lighting period 1.5±±00..55 sseecc
Yellow (blinking) WPA in self-heating state
Yellow (stable) In startup phase, WPA is in
LED state as it was before disconnection TCP/IP connection is lost for
Yellow (stable) TCP/IP connection is lost
Manual main-switch turned
ON or WPA is resetting
standby state and before
state change message from
WPA
two minutes
and WPA is in standby state
1-6 Functional And Physical Specifications
Functional and physical specifications for the model G3L-1900-31 and G3L-1900-31-A amplifiers
are listed in appendix A.
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 1-4 June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
1-7 Equipment Changes
Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, including but not necessarily limited to component substitution and circuitry changes. Changes that
impact this manual may subsequently be incorporated in a later revision of this manual. To that
end, we ask that you, our customer, share with us any information acquired in field situations that
would enhance this manual.
1-8 Ordering Information
Table 1-7 below gives the model numbers and descriptions used when ordering major components.
Table 1-7 Major Components
Nokia Model
Number*
WPAF G3L-1900-31 044-05116 31W, 1930 – 1990 MHz ampli-
WPAE G3L-1900-31-A 044-05116 31W, 1930 – 1990 MHz amplifier
* Nokia model number located on front panel. Powerwave Technologies model number located on
rear panel.
PWAV Model
Number*
Manual Number Description
fier module (DC)
module (AC)
Figure 1-1 G3L-1900-31 and G3L-1900-31-A Front and Rear Views
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 1-5 June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
Section 2 Operation
2-1 Introduction
This section contains operating instructions for the G3L-1900-31 or G3L-1900-31-A wideband
power amplifier (WPA).
2-2 Initial Start-Up and Operating Procedures
The manual main power supply ON/OFF switch is located on the WPA front panel (refer to figure
1-1 and paragraph 1-5 for status indicator conditions). Turn on the WPA as described in the steps
that follow.
CAUTION
Before applying power, make sure that the input and output of the system is properly
terminated at 50 ohms. Do not operate the system without a load attached. Refer to
appendix A for input power requirements. Excessive input power may damage the
amplifier.
WARNING
Never remove or install coaxial cables on either the subrack input or output port when
the power amplifier is turned on. Operating the power amplifier while disconnecting
and connecting RF cables may damage the equipment and/or cause personal injury.
1. Verify that all input and output RF cables are properly connected. Do not apply an RF signal
to the WPA.
2. Turn on the main manual power supply switch (1=ON, 0=OFF). The WPA will self-test and
initialize (<15 sec), then establish communication with the base station via the TLCI bus.
When completed, the WPA notifies the base station that it is ready to be taken into operation.
The WPA then remains in a standby state until commanded by the base station. The command received from the base station includes the operating band and based on that band,
the pilot frequency sets to 10 MHz lower than the lowest carrier in the operating band.
NOTE
When the WPA is switched on in temperature conditions below the minimum operating
temperature (-10ºC), self-heating is performed until an acceptable operating
temperature exists.
NOTE
The main manual power supply switch is also used to reset the WPA by manually
setting the switch to OFF then back to ON.
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
044-05116 Rev. A 2-1 June 2002
G3L-1900-31/G3L-1900-31-A Operation Manual
Appendix A. Specifications
Table A-1 G3L-1900-31/31-A Wideband Multicarrier Cellular Amplifier Functional
Specifications
Frequency Range 1930 - 1990 MHz (60 MHz Bandwidth)
Instantaneous Bandwidth 20 MHz *
Total Typical / Maximum Input Power -15.6 - +4.9 / +5.9 dBm
Total Output Power 31 W (44.9 dBm)
Adjacent Channel Leakage Power
Ratio (ACLR) Spectrum Analyzer settings: 30 KHz RBW, 300 KHz VBW,
True RMS detector
RF Gain 40 dB +0.5 dB
Gain Flatness:
Output Protection: Mismatch Protected
Input Port Return Loss: 18 dB min
Harmonics: Better than -50 dBc
Out of Band Spurious: Better than -60 dBc
Duty Cycle: Continuous
DC Input Power:
G3L-1900-31
AC Input Power:
G3L-1900-31-A
Operating Temperature: -10 ºC to +50 ºC
Storage Temperature: -40 ºC to +85 ºC
Operating Humidity: 0 % to 80 % Relative Humidity (noncondensing)
Storage Humidity: 0 % to 100 % Relative Humidity (noncondensing)
AC, DC Input, Summary Alarm, Base
Station Communication TLCI Bus:
RF Input Connector: SMA Female
RF Output Connector: Type N-Female
Power Consumption: 435 Watts @ Po = 31 W average power
Weight: 28 lbs.
Dimensions: 3.125” High, 16.75” Wide, 14.125” Deep, 15.75” Deep
* The command received from the base station includes the operating band and based on that
band, the pilot frequency sets to 10 MHz lower than the lowest carrier in the operating band.
ACLR1 <-46dBc@f=fc ±5 MHz
ACLR2 <-51dBc@f=fc ±10 MHz
±0.5 dB
-48 Vdc nominal, 9.1 amps typical (15 amps max)
Operational -57 Vdc to -60 Vdc (Po derated outside
normal operating range)
230 Vac nominal, 1.9 amps typical (3 amps max)
Operational 264 Vac to 300 Vac (Po derated outside
normal operating range)
Elcon Modular Flatpaq
including connector guides
tm
All specifications are subject to change without notice. Contact the factory for complete performance data.
044-05116 Rev. A
Ó Copyright Powerwave Technologies, Inc., June 2002. All rights reserved
A-1 June 2002
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