Powerwave Technologies 5JS0060 Amplifier User Manual I GENERAL DESCRIPTION

Powerwave Technologies Inc Amplifier I GENERAL DESCRIPTION

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Manual

1930-1990 MHz

044-05116 Rev. A June 2002

Operation Manual

G3L-1900-31 (DC) / G3L-1900-31-A (AC)

Wideband Multi-Carrier Power Amplifier

Operation Manual

1930 MHz – 1990 MHz

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A ii June 2002

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

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.

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 1-1 June 2002

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 amplifi-

ers communicate with the base station via a TLCI control interface bus; passing alarm and meas-

urement 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

X3 Connector

Signal Name Description

A L AC Phase (isolated from amplifier

chassis)

B N AC Zero (isolated from amplifier

chassis)

CPE AC Protective Ground (connected

to chassis)

D-48VDC DC Minus (isolated from amplifier

chassis)

E+48VDC DC Plus (isolated from amplifier

chassis)

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 1-2 June 2002

1-3.3 TLCI Bus Communications

The purpose of the TCLI bus is to provide a communications interface between the power ampli-

fier and base station. The bus is connected from the base station subrack to the X3 connector lo-

cated 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

X3 Connector Pin Signal Name Description

2AXMTP

3AXMTN

18 ARCVP

TLCI

19 ARCVN

Ethernet, 10BASE-T

5WPA_ID_BIT0 Hard-coded WPA ID

13 WPA_ID_BIT1 BIT0=LSB, BIT!=MSB

WPA ID

21 WPA_ID_BIT2 OPEN=1=Logical High

Gnd=0=Logical Low

GND

Ground Connected to WPA chassis ground

Free 6, 7, 14. 15, 16,

22, 23

Reserved for WPA manufacture

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 1-3 June 2002

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 WPA. 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 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

Gain alarm OFF Gain is within the specified range or disabled

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.

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 1-4 June 2002

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 WPA 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 WPA 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±

±0

cManual main-switch turned

ON or WPA is resetting

Yellow (blinking) WPA in self-heating state

Yellow (stable) In startup phase, WPA is in

standby state and before

state change message from

WPA

LED state as it was before disconnection TCP/IP connection is lost for

two minutes

Yellow (stable) TCP/IP connection is lost

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.

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 1-5 June 2002

1-7 Equipment Changes

Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, in-

cluding 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 compo-

nents.

Table 1-7 Major Components

Nokia Model

Number*

PWAV Model

Number*

Manual Number Description

WPAF G3L-1900-31 044-05116 31W, 1930 – 1990 MHz ampli-

fier module (DC)

WPAE G3L-1900-31-A 044-05116 31W, 1930 – 1990 MHz amplifier

module (AC)

* Nokia model number located on front panel. Powerwave Technologies model number located on

rear panel.

Figure 1-1 G3L-1900-31 and G3L-1900-31-A Front and Rear Views

G3L-1900-31/G3L-1900-31-A Operation Manual

044-05116 Rev. A 2-1 June 2002

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 com-

mand 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.

G3L-1900-31/G3L-1900-31-A Operation Manual

All specifications are subject to change without notice. Contact the factory for complete performance data.

044-05116 Rev. A A-1 June 2002

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 set-

tings: 30 KHz RBW, 300 KHz VBW,

True RMS detector

ACLR1 <-46dBc@f=fc ±5 MHz

ACLR2 <-51dBc@f=fc ±10 MHz

RF Gain 40 dB +0.5 dB

Gain Flatness: ±0.5 dB

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

-48 Vdc nominal, 9.1 amps typical (15 amps max)

Operational -57 Vdc to -60 Vdc (Po derated outside

normal operating range)

AC Input Power:

G3L-1900-31-A

230 Vac nominal, 1.9 amps typical (3 amps max)

Operational 264 Vac to 300 Vac (Po derated outside

normal operating range)

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:

Elcon Modular Flatpaq tm

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

including connector guides

* 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.

Powerwave Technologies 5JS0060 Amplifier User Manual I GENERAL DESCRIPTION

Powerwave Technologies Inc Amplifier I GENERAL DESCRIPTION

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