830-0026-4P_AL1900iF_OpInsManual

7/28/2019 830-0026-4P_AL1900iF_OpInsManual

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AmpLink 1900i-F

Operation & Installation Manual

830-0026 Rev. 4P


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Limited Warranty

On a standard basis, Superconductor Technologies Inc. (STI) warrants its AmpLink1900i-F to be free from any defect in material and workmanship for a period of one

(1) year from the date of shipment.

STIs sole obligation under this warranty is to repair or replace the AmpLink 1900i-F

or any part thereof, which proves to be defective after inspection by STI. Thewarranty for the repaired or replaced AmpLink 1900i-F is the un-expired warranty

period of the original AmpLink 1900i-F, or ninety (90) days whichever is greater.This warranty does not apply to any AmpLink 1900i-F that has been disassembled,

modified, subjected to unusual electrical or physical stress, misuse, neglect,excessive deterioration or erosion, abuse, accident, unauthorized repair, improper

installation, or use in any way that is contrary to the instructions set forth herein.

STI is not liable for any indirect, incidental, consequential or special damages,

including without limitation, lost profits and cost of procurement of substitutegoods.

This warranty is the full extent of obligation and liability assumed by STI with

respect to its AmpLink 1900i-F. STI neither assumes nor authorizes any otherperson to assume for it any other obligations or liability in connection with the sale,

installation or use of its AmpLink 1900i-F.


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AmpLink 1900i-F Operation & Installation Manual STI Technical Support 1.800.727.3648

AmpLink 1900i-F

Operation & InstallationManual830-0026 Rev. 4P

STI

460 Ward Drive

Santa Barbara, California 93111Telephone: 805.690.4500

Fax: 805.967.0342E-mail: [email protected]

Web: www.suptech.com


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Information in this document is subject to change without notice. No part of this documentmay be reproduced or transmitted in any form or by any means, electronic or mechanical,

for any purpose, without the express written permission of Superconductor TechnologiesInc.

2004-2009 Superconductor Technologies Inc (STI). All rights reserved.

AmpLink 1900i-F is a trademark of Superconductor Technologies Inc. (STI). All othermarks are properties of their respective owners.

STI part number: 830-0026 Rev. 4P. Last updated: 1/15/09.


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v


Table of Contents

Preface: About this Manual .................................................................................................. 9Overview ........................................................................................................................ 9General Safety................................................................................................................10

Warnings, Cautions, and Notes...............................................................................10Electrostatic Discharge ..........................................................................................10

How to Contact STI..........................................................................................................10

Chapter 1: AmpLink 1900i-F Overview...............................................................................11Overview .......................................................................................................................11AmpLink 1900i-F Configuration..........................................................................................12

Equipment Configuration .......................................................................................12System Configuration............................................................................................12

Functional Description......................................................................................................12RF Signal Flow .....................................................................................................12Power .................................................................................................................13Alarm .................................................................................................................13

Indicators and Connectors ................................................................................................14Front View...........................................................................................................14Rear View............................................................................................................15

Chapter 2: AmpLink 1900i-F Installation Requirements....................................................17Overview .......................................................................................................................17Installation Requirements.................................................................................................17

Conducting a Site Survey.......................................................................................17Site Requirements ................................................................................................18Mounting Requirements.........................................................................................18Reviewing Equipment Shipped from STI...................................................................19Material Requirements ..........................................................................................19Tool Requirements................................................................................................20Test Equipment Requirements................................................................................20

Chapter 3: Installing the AmpLink 1900i-F......................................................................... 21Overview .......................................................................................................................21Unpacking the AmpLink 1900i-F ........................................................................................21Mounting the AmpLink 1900i-F..........................................................................................22Connecting Wires ............................................................................................................22

Connecting the Safety Ground Wire.........................................................................22Connecting the Power Wire ....................................................................................23Connecting Alarm Relays .......................................................................................23

Performing Power Up .......................................................................................................24Performing Functional Checks............................................................................................25

Alarm Relay Test ..................................................................................................25Test Generator Calibration Data..............................................................................25RF System Test ....................................................................................................26

Wiring for Redundancy.....................................................................................................28Connecting RF Jumper Cables ...........................................................................................28


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vi


Chapter 4: AmpLink 1900i-F Maintenance and Troubleshooting Tips .................................31Overview .......................................................................................................................31Periodic AmpLink 1900i-F Maintenance Checklist..................................................................31Troubleshooting Tips........................................................................................................32Instructions for Return Shipment.......................................................................................34

Appendix A: AmpLink 1900i-F Specifications .....................................................................35

Index ..................................................................................................................................37


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vii


List of Figures

Figure 1. Typical base station integrated with the AmpLink 1900i-F..............................................11Figure 2. RF signal flow block diagram .....................................................................................12Figure 3. Functional block diagram ..........................................................................................13Figure 4. Front panel indicators and connectors.........................................................................14Figure 5. ANTENNA / BTS connectors.......................................................................................15Figure 6. AmpLink units mounted on an equipment rack shelf......................................................18Figure 7. AmpLink units mounted longitudinally on a cable ladder kit............................................18Figure 8. Voltage polarity for 27 VDC (left) and -48 VDC power (right) .........................................23Figure 9. Alarm relay in normal and fault states ........................................................................24Figure 10. Test generator calibration data setup block diagram....................................................26Figure 11. RF system test connections for receive / transmit paths...............................................26Figure 12. Swept response for receive / transmit paths ..............................................................27Figure 13. Wiring for redundancy ............................................................................................28Figure 14. RF jumper cable connections pre- and post-AmpLink installation...................................29

List of Tables

Table 1. Front Panel Indicators ...............................................................................................14Table 2. Front View Description...............................................................................................14Table 3. Rear View Description................................................................................................15Table 4. Equipment Supplied ..................................................................................................19Table 5. Materials Required ....................................................................................................19Table 6. Tools Required .........................................................................................................20Table 7. Test Equipment Required ...........................................................................................20Table 8. PWR / LNA1 and LNA2 LED Troubleshooting..................................................................31Table A1. AmpLink 1900i-F Specifications.................................................................................35


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viii



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Preface: About this Manual 9


Preface: About this Manual

Overview

The AmpLink 1900i-F Operation and Installation manual provides detailed information on

the installation requirements and procedures, testing procedures, and maintenance andtroubleshooting tips for proper AmpLink 1900i-F operation and installation. The following

summary provides information about the chapters and appendix.

Chapter Title Description

Preface About this Manual Provides general information about the manual.

1 AmpLink 1900i-FOverview

Describes the role of the AmpLink 1900i-F in atypical wireless base station system. Providesinformation on AmpLink 1900i-F equipment

configurations and functional descriptions.

2 AmpLink 1900i-FInstallation Requirements

Lists the tools, materials, and test equipmentrequired for proper AmpLink 1900i-Finstallation.

3 Installing the AmpLink1900i-F

Provides the following information for installingthe AmpLink 1900i-F: mounting the unit,connecting the safety ground, power, andalarm wires, performing power up, performingfunctional checks, and connecting RF jumpercables.

4 AmpLink 1900i-FMaintenance andTroubleshooting Tips

Provides information about inspecting theAmpLink 1900i-F on a periodic basis and basictroubleshooting tips for problems that may

occur during installation or operation. Thischapter concludes with instructions forreturning the AmpLink 1900i-F in an event of afailure.

Appendix A AmpLink 1900i-FSpecifications

Provides information on power requirements,physical dimensions, and environmentalspecifications.


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Preface: About this Manual 10


General Safety

Warnings, Cautions, and Notes

Warnings, cautions, and notes are used throughout the manual. Review the significance of

each:

A warning denotes a hazard to personnel. A warning calls attention to aprocedure, which if not correctly performed or adhered to, could result in injuryto personnel.

A caution denotes a hazard to equipment. A caution calls attention to aprocedure, which if not correctly performed or adhered to, could result indamage to the equipment

A note calls attention to a procedure for informational purposes only.

Electrostatic Discharge

The AmpLink 1900i-F contains components that are subject to damage from electrostaticdischarge (ESD). Ensure that you adhere to all appropriate ESD precautions. The following

caution appears throughout the manual during procedures in which the AmpLink 1900i-F

may be subject to damage by ESD.

The AmpLink unit contains components that are subject to damage fromelectrostatic discharge (ESD). Take precautionary measures when handlingAmpLink components.

How to Contact STI

STI Technical Support

1.800.727.3648

STI Customer Service1.888.800.5314

For your convenience, the STI Technical Support number is located at thebottom of each page throughout the manual.


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Chapter 1: AmpLink 1900i-F Overview 11


Chapter 1: AmpLink 1900i-F Overview

Overview

The AmpLink 1900i-F (AmpLink) is a Low Noise Amplifier (LNA) with a dual duplexer that

connects in-line (cascade) with the existing base station equipment. The superiorperformance of the AmpLink unit enables wireless service providers to enhance customer

satisfaction and increase subscriber base by improving the quality of voice and dataconnections within networks.

Figure 1 shows a typical wireless telecommunications base station integrated with theAmpLink unit.

Figure 1. Typical base station integrated with the AmpLink 1900i-F

Some benefits of integrating the AmpLink unit in a wireless telecommunications networkinclude:

Improved receiver noise figure Designed for ease of use

Low power consumption Maintenance-free operation

Convenient base station installation


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AmpLink 1900i-F Configuration

Equipment Configuration

The AmpLink unit is available for use in the United States Personal Communication Service

(PCS) wireless frequencies. Available in a 2-channel RF receiver configuration, the AmpLink

unit supports either a site with omni-directional antennas or a single sector of a sectoredbase station. A sectored base station requires three AmpLink units.

System Configuration

The AmpLink unit connects in-line (cascade) with existing base station equipment. Figure 2

shows the AmpLink unit installed in a PCS base station sector. As shown, the antenna feedcable connects directly to the antenna port of the AmpLink unit to provide a clear, low noise

signal to the base station receiver.

Figure 2. RF signal flow block diagram

Functional Description

See Figure 3 on page 13 for a functional block diagram of the AmpLink unit.

RF Signal Flow

Do not apply DC voltage to any RF port.

RF signals to / from the antenna connect to the AmpLink connectors labeled ANTENNA CH1and CH2. The dual-duplexers split transmit / receive signals into their respective paths as

shown in Figure 3. After the receive signals leave the duplexers, they route to a sensitiveLNA, and then recombine with the transmit path for connection to the base station

receivers.


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Power

Base station input power (27 VDC or -48 VDC) connects to the POWER terminal block

connections located on the front panel of the AmpLink unit. The input power routes throughtwo 3A fuses to the power and alarm board. The input power requirement is 22 VDC to

60 VDC, suitable for connection to either 27 VDC power or -48 VDC power.

Alarm

The front panel of the AmpLink unit provides a terminal block for alarm connections. From

the AmpLink unit, the multi-conductor alarm wire routes to the base station alarm system,allowing for remote alarm monitoring.

The power and alarm board monitors the supply current to each LNA. If the current is too

low (open circuit) or too high (short circuit) the self-test logic drives the alarm relay to thefault position.

Figure 3. Functional block diagram


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Indicators and Connectors

Front View

The AmpLink unit provides three indicators (LEDs), power and alarm terminal block

connections, fuse holders, and a ground lug as described in Tables 1 and 2.

Figure 4. Front panel indicators and connectors

Table 1. Front Panel Indicators

Item No. Item Description

OFF: No fault in the AmpLink unit (CH1).1 LNA1 LED

RED: Fault in the AmpLink unit (CH1).

OFF: No fault in the AmpLink unit (CH2).2 LNA2 LED

RED: Fault in the AmpLink unit (CH2).

OFF: No power applied to the AmpLink unit.3 PWRLED

GREEN: Power applied to the AmpLink unit.

Table 2. Front View Description


4 ALARM NC, C, and NO(terminal block)

Provides connection from the alarm relay to the base station alarmsystem.

5 VDC IN + and (terminalblock)

Provides input power connection for 27 VDC or -48 VDC.

6 FUSE VDC + and VDC - 27 VDC or -48 VDC input power provides 3A input power protection.

7 GND Chassis ground lug.

1

2

3

6

7

5


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Rear View

The AmpLink unit accommodates up to two RF paths, providing connections to the Antenna

and BTS. For a sectored site, three AmpLink units are required. 7/16 DIN-female typeconnectors are used on the AmpLink unit.

Figure 5. ANTENNA / BTS connectors

Table 3. Rear View Description


1 ANTENNA CH1 / CH2 7/16 DIN-type connector that receives RF signals from theantenna for each AmpLink receive path and passes Txsignals from the base station.

2 BTS CH 1 / CH2 7/16 DIN-type connector that receives RF signals from eachAmpLink receive path output to the base station front-endinput and passes Tx signals from the base station.


1

2


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Chapter 2: AmpLink 1900i-F Installation Requirements 17


Chapter 2: AmpLink 1900i-F

Installation Requirements

Overview

Proper AmpLink installation requires equipment, tools, materials, and adequate siteconditions. Conducting a site survey will determine the necessary requirements to prepare

the site for AmpLink installation. Contact STI Technical Support for any questions regardingthe installation requirements.

Prior to installing the AmpLink unit, review the following installation tasks andrequirements:

Conducting a site survey

Reviewing site requirements Reviewing mounting requirements

Reviewing equipment shipped from STI

Assembling tools and materials required for installation

Tools, materials, and test equipment are not supplied with the AmpLink unit.The following sections guide you in preparing the items you need to install theAmpLink unit. If you have questions about the installation requirements, contactSTI Technical Support.

Installation Requirements

Conducting a Site Survey

Conducting a site survey will determine the site requirements for proper AmpLink

installation. For more information or further assistance, contact STI Technical Support.Consider the following as you complete a site survey:

Base station configuration

Are physical or software adjustments required to the base station? If softwareadjustments are required, what settings are appropriate to optimize the base

station?

Condition of the base station, antennas, and interconnectionsInspect the current state of the site: Clear any alarms at the site, sweep antenna

paths, and check interconnections for wear. Mounting location for new equipment

For optimum performance, select a mounting location that provides the shortestconnection between the antenna and the AmpLink unit. The chosen location will

determine how you mount the AmpLink unit.

Mounting kit requirementsA mounting kit is required to properly mount the AmpLink unit: equipment rack

shelf or cable ladder mount. STI offers both options to mount between one to threeAmpLink units. Contact STI Customer Service for pricing and availability.


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RF jumper cable and wiring requirements

The AmpLink unit requires RF jumper cables and wiring (safety ground, power, andalarm). STI offers installation kits for your convenience. Contact STI Customer

Service for pricing and availability. Installing AmpLink equipment

From preparation to cutover, the installation typically requires four hours. Completethe installation anytime during the day which includes rerouting the RF jumper

cables to / from the AmpLink unit. This process requires a technician capable ofturning the base station transmitter off and then back on and reinitializing service.

Complete cutover during maintenance hours.

Site Requirements

Review the following site requirements for proper AmpLink installation:

Base stationSheltered enclosure with temperature and humidity control. Maintain the enclosure

between 0C and 50C with conditioned air, and 0% to 90% for relative humidity(non-condensing).

Mounting locationSelect a mounting location that provides space to access the RF jumper cables in the

rear panel of the AmpLink unit.

Power source27 VDC (22 VDC to 30 VDC) or -48 VDC (-42 VDC to -60 VDC) power source

provided through a power distribution circuit breaker of no more than 3A (3A to 5A)capability.

Alarm relay monitoringSet up remote alarm monitoring connections for the AmpLink unit.

Mounting Requirements

A mounting kit is required to properly mount the AmpLink unit. STI offers two mounting

options:

Equipment rack shelf(part number 018-0216):The two-piece equipment rack shelf supports up to three

AmpLink units in a 19 equipment rack. A 23 equipment

rack shelf is also available (part numberMK-AL1900iF-23ERS). Contact STI Customer Service for

pricing and availability.

Figure 6. AmpLink unitsmounted on an

equipment rack shelf

Cable ladder kit (part number 018-0217):

If equipment rack space is limited, STI offers a cable ladderkit to mount up to three AmpLink units longitudinally or

transversely below the cable ladder. A second, low cost,cable ladder kit is also available to mount the AmpLink units

longitudinally only (part number 018-0217-002). Contact STI

Customer Service for pricing and availability. Figure 7. AmpLink unitsmounted longitudinally

on a cable ladder kit

Contact STI Technical Support for more information about proper mounting options.


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Reviewing Equipment Shipped from STI

Each AmpLink unit contains the items as described in Table 4. Contact STI Customer Service

if items are missing from the table.

Table 4. Equipment Supplied

Item No. Item Part No. Qty Notes1 AmpLink 1900i-F 1900ALFULL2-ID 1 each AmpLink 1900i-F as ordered.

2 Labels 185-0056-003185-0056-004185-0056-005

1 each Labels provided to mark each AmpLinkunit as Alpha, Beta, and Gamma.

3 AmpLink 1900i-F QuickStart Installation Guide

830-0026-02 1 each Provides a quick overview to properlyinstall the AmpLink 1900i-F

4 STI CD 831-0018 1 each Contains the AmpLink 1900i-F Operationand Installation Manual.

Material Requirements

Review the following materials required for AmpLink installation as described in Table 5.

Table 5. Materials Required

Item No. Item Qty Notes

1 Antenna RF jumper cable,flexible, low loss(1/2 minimum)

1 perantennapath, lengthas required

*7/16 DIN connectors, male to male. This cablemust be long enough to connect between theexisting antenna feed coaxial connector and theAmpLink ANTENNA port. (Rerouting the existingfeed jumper cable is recommended for this cable.).

2 BTS RF jumper cable, flexible,low loss (1/2 minimum)

1 per BTSreceivepath, lengthas required

*7/16 DIN connectors, male to male. This cablemust be long enough to connect between theexisting input connector of the base station receiverand the AmpLink BTS port.

3 Wire, power (16 AWG) Length asrequired

Red and black wire preferred for color-coding + and power.

4 Wire, alarm (24 AWG) Length asrequired

If desired, for connecting the AmpLink alarm relayoutputs to the base station system alarm controlunit.

5 Wire, safety ground (6 AWG) Length asrequired

For connecting the AmpLink chassis ground to thebase station ground.

6 Circuit breaker, 5A 1 per unit Used to install the AmpLink unit and performfunctional checks. (Use no more than a 5A circuitbreaker for DC power source.)

7 Nylon wire ties As required For dressing RF jumper cables after integration.

8 Tape / labels As required For labeling RF jumper cables per sector.

*Assumes BTS port and antenna feed cable terminations are 7/16 DIN-femaleconnectors.


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Tool Requirements

Review the following tools required for AmpLink installation as described in Table 6.

Table 6. Tools Required

Item No. Item Notes

1 Screwdriver, 1/8 flat blade For power and alarm connections, and removing fuses.2 Wrench, 7/16 For loosening / tightening ground lug.

3 Allen wrench, 3/16 For tightening ground wire to ground lug.

6 Torque wrench For torquing RF connectors with a setting of 221+4 in-lbs.

7 Wire stripper For preparing power, alarm, and safety ground wire for properconnection.

8 Wire cutter (diagonal cutter) For preparing power, alarm, and safety ground wire for properinstallation. Also used for nylon wire tie removal.

Test Equipment Requirements

Review the following test equipment required to perform functional checks to the AmpLink

unit as described in Table 7.

Table 7. Test Equipment Required

Item No. Item Notes

1 Digital Multimeter (DMM) orequivalent

Checks alarm relays and input power.

2 RF Signal Generator Generates a continuous wave (CW) carrier for the following: Rx path: 1850 MHz to 1910 MHz

Output level adjusted to -50+1 dBm Tx path: 1930 MHz to 1990 MHz

Output level adjusted to -50+1 dBm

3 Spectrum Analyzer Receives and displays CW carrier at 1850 MHz (Rx path) and1990 MHz (Tx path) across levels -55 dBm to -35 dBm.Measure received power level accurately (+1 dB).

4 Test cables DIN-male connectors required for AmpLink connections.

5 Connector adapter, 7/16 DIN-femaleto 7/16 DIN-male (7/16 DIN barrel) Replaces the AmpLink unit for test signal level calibration.

6 Connector adapter, 7/16 DIN-maleto N-type female*

Requires two adapters and connects the AmpLink unit to theRF Signal Generator / Spectrum Analyzer.

*This connector adapter (Table 7, Item 6) assumes that the RF SignalGenerator and the Spectrum Analyzer use the DIN-female connector and testcables are DIN-male to N-male.


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Chapter 3: Installing the AmpLink 1900i-F 21


Chapter 3: Installing the AmpLink 1900i-F

Overview

Qualified technicians should install the AmpLink unit. Contact STI TechnicalSupport for assistance.

The information described in this chapter can be considered installationguidelines. Technicians should adhere to all local building and electrical codesand permit requirements.

Proper AmpLink installation consists of the following tasks:

Unpacking the AmpLink unit

Mounting the AmpLink unit

Connecting the safety ground, power, and alarm wires Performing power up

Performing functional checks

Connecting RF jumper cables

This chapter describes a generic installation procedure. BTS-specific application notes are

available. Contact STI Technical Support for more information.

See Tables 4-7 for reference to the items required in each section.

Unpacking the AmpLink 1900i-F

The unboxed AmpLink unit weighs 41 lbs. To prevent injury to personnel anddamage to equipment, it is recommended that two people are available to movethe AmpLink unit.

1 Inspect the shipping container for signs of damage. Report any damage to STI

Customer Service.

2 Remove loose packing materials on top of the AmpLink unit. Set aside the packetcontainingthe CD.

3 With the foam packing material in place, lift the AmpLink unit from the shipping

container. Place the AmpLink unit on a level surface and remove the foam packingmaterial from the unit.

4 Inspect the AmpLink unit for signs of damage. Report any damage to STI CustomerService.

5 Retain the shipping container and all packing materials for reuse. Store the shipping

container in a dry place.


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Mounting the AmpLink 1900i-F

The unboxed AmpLink unit weighs 41 lbs. To prevent injury to personnel anddamage to equipment, it is recommended that two people are available to movethe AmpLink unit.

Labels are provided to mark each AmpLink unit for identification: Alpha, Beta,and Gamma.

A mounting kit is required to properly mount the AmpLink unit. STI offers two mounting

options:

Equipment rack shelf(part number 018-0216):

The two-piece equipment rack shelf supports up to three AmpLink units in a 19equipment rack. A 23 equipment rack shelf is also available (part number

MK-AL1900iF-23ERS).

Cable ladder kit (part number 018-0217):If equipment rack space is limited, STI offers a cable ladder kit to mount up to three

AmpLink units longitudinally or transversely below the cable ladder. A second, low

cost, cable ladder kit is also available to mount the AmpLink units longitudinally only(part number 018-0217-002). Contact STI Customer Service for pricing and

availability.

Mounting instructions and hardware are included with each mounting kit. Contact STICustomer Service for pricing and availability.

Connecting Wires

Connecting the Safety Ground Wire

Equipment required: Materials required: Safety ground wire (6 AWG)

Tools required: Wrench, 7/16 Allen wrench, 3/16 Wire stripper Wire cutter

1 Using a wire stripper and a wire cutter, strip and cut the safety ground wire to properlength.

2 Using an Allen wrench (3/16), loosen the ground lug screw, insert the safety ground

wire into the cavity, and tighten the ground lug screw until secure.

3 Connect the other end of the safety ground wire to the base station equipment

ground or the equipment single point ground plate.


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Connecting the Power Wire

Keep the power wire to less than 30 feet in length.

Before proceeding with the power wire connection, set the circuit breaker to theopen or off position. Failure to comply may result in personnel injury.

Equipment required: Materials required: Power wire (16 AWG)

Tools required: Wire stripper Wire cutter Flat blade screwdriver, 1/8

1 Remove the fuses from the AmpLink unit.

2 Select a circuit breaker in the power panel. Operate (open) the circuit breaker to turn

off power in the circuit.

3 Using a wire stripper, strip the power wires insulation (1/2) and twist the strands.

4 Using a flat blade screwdriver (1/8), loosen the screw on the terminal block.

5 Insert the power wire into the terminal block while carefully maintaining the correct

voltage polarity. Do not close the circuit breaker at this time.

+

-

+27V

0V

+

--48V

0V

Figure 8. Voltage polarity for 27 VDC (left) and -48 VDC power (right)

Although the AmpLink unit accepts positive or negative DC power, care must betaken to maintain proper voltage polarity. Connect the positive voltage to the +terminal only and the negative voltage to the - terminal only.

6 Tighten the screw and verify that the power wire is securely clamped to the terminal.

7 Route the power wire and connect it to the base station power distribution circuitbreaker. Do not close the circuit breaker at this time.

Connecting Alarm Relays

By connecting the output of the AmpLink alarm relays to the base station alarm system,remote alarm monitoring is possible. Figure 9 shows the states of the alarm relays.


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Figure 9. Alarm relay in normal and fault states

Equipment required: Materials required: Alarm wire (24 AWG)

Tools required: Wire stripper Wire cutter Flat blade screwdriver, 1/8

1 Using a wire stripper, strip the alarm wires insulation (1/2).

2 Using a flat blade screwdriver (1/8), loosen the screw on the terminal block.

3 Insert the alarm wire into the terminal block labeled C and NC or NO as required by

the base station alarm system.

4 Tighten the screw and verify that the alarm wire is securely clamped to the terminal.

5 Route the alarm wire to the base station alarm connection point. Do not close the

circuit breaker at this time.

Performing Power Up

Before proceeding with power up, set the power base station distribution circuitbreaker to the open or off position. Failure to comply may result in personnelinjury.

Equipment required: Circuit breaker DMM

Materials required: Tools required:

1 Ensure the circuit breaker is set to the open or off position.

2 Remove the fuses from the fuse holders on the front panel of the AmpLink unit.

3 Set the circuit breaker to the closed or on position.

4 Using a DMM, verify that the AmpLink input voltage and polarity at the terminal block

contact reads the following: 22 VDC to 30 VDC or -42 VDC to -60 VDC.

5 After verifying proper voltage and polarity, turn the circuit breaker off, and install thefuses in the fuse holders.

6 Setting the circuit breaker to the closed or on position, apply power to the AmpLink

unit.


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Performing Functional Checks

Before performing any functional checks, the AmpLink unit must be in Normal operation,indicated by the PWRLED in GREEN and the LNA1 and LNA2 LEDs turned off. If the

AmpLink fails to go into Normal operation, review the Troubleshooting Tips section on

page 32 or contact STI Technical Support for assistance.

AmpLink functional checks consist of the following tasks:

Alarm relay test Test generator calibration data

RF system test

Equipment required: RF Signal Generator Spectrum Analyzer

Materials required: 7/16 DIN-type barrel connector

adapter Test cables

Tools required:

Before proceeding with the functional checks, turn on the RF Signal Generatorand the Spectrum Analyzer to warm them up. Consult the equipment operator

manuals for proper test equipment warm up time.

Alarm Relay Test

Before performing the alarm relay test, the AmpLink unit must be in Normaloperation, indicated by the PWRLED in GREEN and the LNA1 and LNA2 LEDsturned off.

1 Power off the AmpLink unit to place the alarm relay in alarm condition. Verify that the

base station alarm is activated. The alarm relay is now in alarm condition, indicatedby the PWRLED turned off. Verify that the base station alarm is activated.

2 Power on the AmpLink unit to return to Normal operation (PWRLED in GREEN and

the LNA1 and LNA2 LEDs turned off). Verify that the base station alarm is no longeractivated.

Test Generator Calibration Data

A signal power measurement is the reference level for verifying AmpLink RF path gain and

loss values.

1 Allow the RF Signal Generator and the Spectrum Analyzer to warm up.

2 Set the RF Signal Generator to output a CW signal:

Rx path1850 MHz to 1910 MHz

Power level set to -50+1 dBm

Tx path1930 MHz to 1990 MHz


3 Connect the RF Signal Generator output to the Spectrum Analyzer as shown in Figure

10. Substitute a 7/16 DIN-type barrel connector adapter for the AmpLink unit.

7/16 DIN-male to N-type female connector adapters may be required to connectthe RF Signal Generator and the Spectrum Analyzer to the barrel adapter or tothe AmpLink unit.


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Figure 10. Test generator calibration data setup block diagram

4 Measure the signal frequency and power level, and note both values.

5 Remove the 7/16 DIN-type barrel connector adapter.

RF System Test

The RF jumper cables between the AmpLink unit and the base station are notconnected for the RF System Test.

Re c e i v e P a t h

1 Remove the ESD covers from the RF connectors, and store them in the shipping

container.

2 Connect the test equipment to the AmpLink unit as shown in Figure 11:

RF Signal Generator out to ANTENNA CH1 Spectrum Analyzer in to BTS CH1

ANTENNACH 1

BTSCH 1

AmpLink 1900i-F

RFSignal Generator

Spectrum Analyzer

AmpLink 1900i-F

Figure 11. RF system test connections for receive / transmit paths

3 Set the RF Signal Generator to the receive center band frequency of 1880 MHz and

power level of -50+1 dBm.

4 Apply power to the AmpLink unit.

5 Measure RF power level as shown on the Spectrum Analyzer at the center band

frequency of 1880 MHz:

Pass: Gain > 12 dB Fail: Gain < 12 dB


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In an event of a failure, you must return the AmpLink unit to STI. See theInstructions for Return Shipment section on page 34 for more information.

6 Repeat steps 2-5 for Channel 2 (Rx only).

T r a n sm i t P a t h

Complete the Receive Path test before continuing with the Transmit Path test.

1 Connect the test equipment to the AmpLink unit:

RF Signal Generator out to BTS CH1 Spectrum Analyzer in to ANTENNA CH1

2 Measure RF power levels as shown on the Spectrum Analyzer at the center band

frequency of 1960 MHz:

Pass: Gain < -1 dB

Fail: Gain > -1 dB

In an event of a failure, you must return the AmpLink unit to STI. See theInstructions for Return Shipment section on page 34 for more information.

3 Repeat steps 1-2 for Channel 2 (Tx only).

If you have access to a Spectrum Analyzer with a tracking generator, or RFSignal Generator with sweep mode, you can set the unit to sweep across1500 MHz to 2300 MHz for the RF system test. You should see displays similarto those shown in Figure 12.

AmpLink 1900e-F

Antenna Port to BTS Port

-80

-60

-40

-20

0

20

1800 1850 1900 1950 2000 2050

MHz

dB

Figure 12. Swept response for receive / transmit paths

Rx

Tx

AmpLink 1900i-F

MHz


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Wiring for Redundancy

To provide sector-by-sector redundancy, main and diversity signals from a single sectorshould not be connected to the same AmpLink unit. In an event of a single unit failure, a

configuration with two RF paths from one sector, processed by two different AmpLink units,

will keep the sector operational. Figure 13 shows one way of assigning the channels forimproved reliability.

Figure 13. Wiring for redundancy

Connecting RF Jumper Cables

This section applies to a sectored base station (6-receive channel). ThreeAmpLink units are required.


Turn off the transmit power in the base station before proceeding.

Before proceeding with RF jumper cable connections, the AmpLink unit must bein Normal operation, indicated by the PWRLED in GREEN and the LNA1 andLNA2 LEDs turned off.

This section assumes that the antenna cables connected to the base station willbe disconnected and used for the top row of the AmpLink unit.

From this point forward, call service may be interrupted.

Equipment required: Materials required: RF jumper cables Nylon wire ties Tape / Labels

Tools required: Torque wrench

1 Prepare a set of RF jumper cables that will reach from the AmpLink unit to the base

station Main and Diversity antenna connections. Sweep the RF jumper cables to verifyperformance. Label the RF jumper cables with tape or labels for identification.


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2 Turn off the base station transmit power.

3 In the first receive path, reuse the existing RF jumper cable to connect between thebase station Tx / Rx input and the main AmpLink BTS CH1 output.

4 Using a new RF jumper cable, connect between the antenna and the AmpLinkANTENNA CH1 port.

5 Using a torque wrench, torque the 7/16 DIN-type connectors to 221+4 in-lbs.

6 Repeat steps 3-5 for the remaining RF connections (ANTENNA CH2, BTSCH2).

7 Repeat steps 1-5 for the remaining AmpLink units.

8 Turn on the base station transmit power. Verify site performance by making testcalls.

9 Dress the RF jumper cables with nylon wire ties as required.

Figure 14. RF jumper cable connections pre- and post-AmpLink installation


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Chapter 4: AmpLink 1900i-F Maintenance and Troubleshooting Tips 31


Chapter 4: AmpLink 1900i-F Maintenance and

Troubleshooting Tips

Overview

Although the AmpLink unit is maintenance free, periodic inspections are suggested. Thefrequency of inspections depends on the installation site conditions. If a problem is found

with the AmpLink unit, basic troubleshooting tips for the most common problems andpossible resolutions are provided. Contact STI Technical Support if the problem continues

with the AmpLink unit, or the problem at hand is not available in this chapter.

If the AmpLink problem continues, the unit must be returned to STI. Instructions are

provided at the end of this chapter to return a failed AmpLink unit. Contact STI CustomerService for questions regarding AmpLink replacement or repair.

Periodic AmpLink 1900i-F Maintenance Checklist

Periodic inspections of the installation site are suggested. Review the following AmpLinkmaintenance checklist to assist in the inspection.

Mounting hardware: Check that the AmpLink units are securely mounted. RF jumper cables: Check the RF jumper cables for damage. Replace RF jumper

cables as required. Wire connections: Check the safety ground, power, and alarm wires for damage.

Replace wires as required.

PWRand LNA1 or LNA2 LEDs: Check the PWR, LNA1 and LNA2 LEDs:

Table 8. PWR / LNA1 and LNA2 LED Troubleshooting

State PWR LED LNA1 / LNA2 LED Description

Normal operation AmpLink unit in Normal operation.

Fault mode

If LEDs display RED, see the TroubleshootingTips section on page 32 to resolve the problem.If LEDs are off, check the power to the basestation. If the base station is powered on, theAmpLink unit may have an internal fault. ContactSTI Technical Support for assistance.

Contact STI Technical Support for any questions you may have during the inspection.


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Troubleshooting Tips

Problems may occur during installation, or from hardware failures that occur duringoperation. This section identifies the most common problems, providing troubleshooting tips

to resolve them. If your specific AmpLink problem does not appear in this list, contact STITechnical Support for assistance.

Problem No. Description Page No.

1 PWRLED off. Page 33

2 Fuse blows or circuit breaker trips. Page 33

3 RED LED illuminates on any one of the following LEDs: LNA1 or

LNA2.

Page 34

4 BTS path failure (PWRLED on, and both LNA1 and LNA2 LEDsoff, but no signal is coming through).

Page 34


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Problem 1 PWR LED off.

Cause 1.1 DC power wire connection is not complete / correct.Solution 1.1a Check power wire for proper continuity. Replace wires if

necessary.Solution 1.1b Check power wires for continuity. Replace wires if necessary.

Solution 1.1c Check that the DC breaker is on and supplying power. Replace

the breaker if necessary.

Cause 1.2 Fuse blown.Solution 1.2 Replace fuse (3A) and power on the AmpLink unit again.

Cause 1.3 Other.

Solution 1.3 Contact STI Technical Support for assistance.

Problem 2 Fuse blows or circuit breaker trips.

Cause 2.1 Incorrect voltage polarity applied.Solution 2.1 Check that the voltage polarity matches the labels on the

terminal block. If the polarity is correct, then continue withCause 2.2. If the polarity is incorrect, change the polarity,

replace the fuse, and / or reset the circuit breaker. Before youremove the fuse, turn off the circuit breaker to prevent injury.

Cause 2.2 Incorrect voltage applied.Solution 2.2 Remove the fuse, close the circuit breaker, and check the

voltage on the terminal block. Before you remove the fuse,turn off the circuit breaker to prevent injury. If the voltage

does not fall between 22 VDC to 30 VDC or -42 VDC to-60 VDC, contact STI Technical Support for assistance.

If the voltage lies within limits and the voltage polarity iscorrect, but the circuit breaker continues to trip, contact STI

Technical Support for assistance. See the Performing PowerUp section on page 24.

Cause 2.3 Wrong circuit breaker rating.

Solution 2.3 Replace the fuse and try again. Before you remove the fuse,

turn off the circuit breaker to prevent injury. If the circuitbreaker blows / trips, check the rating. The circuit breaker

rating should read between 3A to 5A (for both 27 VDC and

-48 VDC). Replace the circuit breaker as required.

Cause 2.4 Other.



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Problem 3 RED LED illuminates on any one of the following LEDs:LNA1 or LNA2.

Cause 3.1 Failed LNA.


Cause 3.2 Other.


Problem 4 BTS path failure (both LNA1 and LNA2 LEDs turned and

input present, but no signal coming through).

Cause 4.1 External RF jumper cable failure.Solution 4.1a Check RF jumper cables for proper mating and secure

connections.

Solution 4.1b Check RF jumper cables for proper continuity of the center

conductor and ground.Solution 4.1c Check RF jumper cables for proper return loss and

Distance-to-Fault.

Cause 4.2 Wrong BTS test frequency.

Solution 4.2 Set the BTS test frequency as follows:

1930 MHz to 1990 MHz


This setting tests the Tx path and measures -1 dB or less. Ifthis test passes, retry the Rx path at any passband frequency

(1850 MHz to 1910 MHz).

Cause 4.3 Other.


Instructions for Return Shipment

In an event of a failure, return the AmpLink unit to STI for repair.

1 Contact STI Customer Service for a Return Material Authorization (RMA) number.

Provide the following information:

Model / serial numbers (located on the rear of the AmpLink unit)

Comprehensive description as to the nature of the return

2 STI will send the RMA number and additional shipping instructions. Follow theinstructions provided in the RMA paperwork to return the AmpLink unit to STI.

Failure to properly package the AmpLink unit could result in significant shippingdamage. STI is not responsible for shipping damage due to improper packaging.Keep the original shipping container, or request a new one from STI.


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Appendix A: AmpLink 1900i-F Specifications 35


Appendix A: AmpLink 1900i-F Specifications

Table A1. AmpLink 1900i-F Specifications

Item Characteristic

Power Requirements

Input power voltage (27 VDC nominal) 22 VDC to 30 VDC-42 VDC to -60 VDC

Input power interface Screw terminal block

Fuses 3A fast-blow (two fuses required)

Maximum input power at -10C to 60C ambienttemperature

15W maximum

Frequencies of Operation

Rx: 1850 MHz to 1910 MHzTx: 1930 MHz to 1990 MHz

Dimensions

10 (H) x 5.75 (W) x 22.5 (D)

AmpLink 1900i-F Weight41 lbs

Environmental

Operating temperature 0C to +50C

Operating humidity 0% to 90% (non-condensing)

Operating altitude From sea level to 15,000 feet

Storage temperature (non-operating) -30C to +70C

Storage humidity (non-operating) 10% to 95% RH non-condensing at 40C

Storage altitude (non-operating) From sea level to 10,000 feet

ESD-sensitive; requires electrostatic dischargeprotection

The AmpLink unit contains components that are subject todamage from ESD.


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Appendix A: AmpLink 1900i-F Specifications 36



37/38

Index 37


Index

A

about the AmpLink 1900i-F ................................11about this manual ...............................................9alarm

connection input terminal strip ........................14alarm relay.......................................................23

functional check ............................................25states...........................................................24

ANTENNA connectors.........................................15

Bbenefits ...........................................................11block diagram

functional .....................................................13RF jumper cable connection pre- and post-

AmpLink installation ...................................29RF signal flow................................................12

BTS connectors.................................................15BTS path failure ................................................34

Ccable ladder......................................................22cable ladder kit .................................................18caution symbol .................................................10circuit breaker trips ...........................................33connecting RF jumper cables ..............................28connecting wires ...............................................22

alarm...........................................................23power...........................................................23safety ground................................................22

contacting STI ..................................................10customer service...............................................10

Ddimensions.......................................................35

EElectrostatic Discharge.......................................10environmental specifications...............................35equipment configuration ....................................12equipment rack shelf ................................... 18, 22equipment specifications....................................35equipment supplied ...........................................19

FFAULT LEDs

LNA1 and LNA2 .............................................14fault mode........................................................31frequencies, operation .......................................35front view

alarm connection terminal strip .......................14fuses............................................................14GND.............................................................14LNA1 / LNA2 LEDs .........................................14power connection terminal strip .......................14PWR LED ......................................................14

functional checks

alarm relay test ............................................ 25RF system test, receive path test .................... 26RF system test, transmit path test................... 27test generator calibration data ........................ 25

functional description ........................................ 12alarm........................................................... 13power.......................................................... 13RF signal flow ............................................... 12

fuse blows ....................................................... 33fuses..........................................................14, 35

Ggeneral safety

caution ........................................................ 10note ............................................................ 10warning ....................................................... 10

Iinstallation procedures

connecting alarm wire.................................... 23connecting power wire ................................... 23connecting RF jumper cables .......................... 28connecting safety ground wire ........................ 22mounting ..................................................... 22performing functional checks .......................... 25performing power up ..................................... 24unpacking AmpLink 1900i-F............................ 21

installation requirementsequipment supplied

AmpLink 1900i-F ....................................... 19quick start installation guide ....................... 19

STI CD ..................................................... 19material requirements ................................... 19mounting requirements.................................. 18site requirements.......................................... 18site survey ................................................... 17test equipment requirements.......................... 20tool requirements.......................................... 20

LLEDs

fault mode.................................................... 31LNA1 ........................................................... 14LNA2 ........................................................... 14normal operation........................................... 31PWR ............................................................ 14

LNA1 / LNA2 LEDs ............................................ 14

Mmaintenance checklist ....................................... 31material requirements....................................... 19mounting

AmpLink 1900i-F........................................... 22requirements ................................................ 18


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Index 38

Nnormal operation...............................................31note symbol .....................................................10

Ppower

connecting....................................................23

connection input terminal strip ........................14description....................................................13input voltage.................................................35maximum.....................................................35

powering up .....................................................24PWR LED..........................................................14PWR LED off .....................................................33

Rrear view

ANTENNA connectors .....................................15BTS connectors .............................................15

RED LED illuminates on any one of the followingLEDs, LNA1 or LNA2.......................................34

redundancy ......................................................28Return Material Authorization (RMA) ....................34return shipments...............................................34RF system test..................................................26

Ssafety.......................................See general safety

site requirements ............................................. 18site survey....................................................... 17system configuration......................................... 12

Ttechnical support .............................................. 10test equipment requirements ............................. 20test generator calibration data ........................... 25

tool requirements, installation............................ 20transmit path test............................................. 27troubleshooting ................................................ 32

BTS path failure ............................................ 34circuit breaker trips ....................................... 33fuse blows.................................................... 33PWR LED off ................................................. 33RED LED illuminates on any one of the following

LEDs, LNA1 or LNA2................................... 34

Uunpacking AmpLink 1900i-F............................... 21

Vvoltage polarity, 27 VDC and -48 VDC................. 23

Wwarning symbol................................................ 10warranty............................................................ 2weight............................................................. 35wiring for redundancy ....................................... 28

Documents

830-0026-4P_AL1900iF_OpInsManual