INSTALLATION AND OPERATING MANUAL

125-WATT C-BAND RACK-MOUNT

SOLID STATE POWER AMPLIFIER

ARMA-C125-CTM

PM 100-316450-140 REV. 1

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WARRANTY This ADVANTECH Advanced Microwave Technologies, Inc. product is warranted against defectsin material and workmanship for a period of 2 years from the date of shipment. During thewarranty period, ADVANTECH Advanced Microwave Technologies, Inc. will, at its option, eitherrepair or replace the product that proves to be defective. To return the product for warranty or repair service, request a Return Material Authorisation(RMA) number by contacting ADVANTECH at: Phone: (514) 420-0045 or Fax: (514) 420-0073 Website: www.advantech.ca or e-mail: elliep@advantech.ca The product should be shipped to the following address, in the original shipping container (box),with the prepaid shipping charges. ADVANTECH Advanced Microwave Technologies, Inc., 657 Orly Avenue Dorval, Quebec H9P 1G1 CANADA Please indicate the RMA number on all shipping documentation. Units shipped without the prior issued RMA, or not shipped in original container, may be rejectedand returned at the sender’s expense.

LIMITATIONS OF WARRANTY ADVANTECH Advanced Microwave Technologies, Inc. warrants this product to be free ofdefects in materials and workmanship. The foregoing warranty will not apply to defects resulting from improper handling or abuse by thecustomer, unauthorised modification, operating the product outside of its environmentalspecifications, or improper installation and maintenance. ADVANTECH Advanced Microwave Technologies, Inc. shall not be liable for any direct, indirect,special, incidental or consequential damages.

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CONTENTS

Page 1. SAFETY ........................................................................................................................................................................ 6

2. GENERAL INFORMATION..................................................................................................................................... 8 2.1 INTRODUCTION........................................................................................................................................................ 8 2.2 ABOUT THIS MANUAL............................................................................................................................................. 8

3. MAJOR SUBSYSTEMS AND THEIR FUNCTIONS..........................................................................................10 3.1 DESCRIPTION .........................................................................................................................................................10 3.2 RF SUBSYSTEM .....................................................................................................................................................10

3.2.1 RF Input Coupler ........................................................................................................................................10 3.2.2 High Power Amplifier Module...................................................................................................................10 3.2.3 Waveguide Arm Assembly.........................................................................................................................11

3.3 POWER SUPPLY SUBSYSTEM .................................................................................................................................11 3.4 MONITOR AND CONTROL ASSEMBLY ...................................................................................................................11

4. INTERFACES............................................................................................................................................................14 4.1 SERIAL INTERFACE (1:2 REDUNDANT SYSTEM) ...................................................................................................14 4.2 DISCRETE INTERFACE............................................................................................................................................15 4.3 RF INPUT AND OUTPUT MONITOR PORTS.............................................................................................................18

5. UNPACKING AND INSTALLATION...................................................................................................................19 5.1 INSTALLATION CONSIDERATIONS .........................................................................................................................19 5.2 INSTALLATION PROCEDURE ..................................................................................................................................19

6. PRE-POWER AND SYSTEM CHECKOUT.........................................................................................................21 6.1 PRE-POWER PROCEDURES .....................................................................................................................................21 6.2 OPERATIONAL SETTINGS VERIFICATION...............................................................................................................21

7. OPERATION..............................................................................................................................................................22 7.1 INTRODUCTION......................................................................................................................................................22 7.2 FRONT PANEL CONTROLS .....................................................................................................................................23

7.2.1 Front Panel Menu System...........................................................................................................................24 7.3 REMOTE SERIAL INTERFACE .................................................................................................................................24

7.3.1 Remote Set-up and Wiring Instructions .....................................................................................................24 7.3.2 Using the RS-422 Serial Interface and the Communication Software ......................................................25

7.4 USING THE DISCRETE INTERFACE .........................................................................................................................31 7.5 SOFTWARE CONFIGURATION SET-UP ....................................................................................................................31 7.6 RF CONFIGURATION SET-UP.................................................................................................................................31

7.6.1 Safety Considerations .................................................................................................................................31 7.7 POWERING UP THE SSPA......................................................................................................................................32

7.7.1 Using the Front Panel .................................................................................................................................32 7.7.2 Selecting REMOTE/LOCAL Control Mode .............................................................................................32 7.7.3 Setting the Alarm Condition for Low Output Power.................................................................................33 7.7.4 Gain Adjustment .........................................................................................................................................34

7.8 POWERING UP THE SSPA......................................................................................................................................35 7.8.1 Using the Front Panel .................................................................................................................................35 7.8.2 Using the Serial Interface ...........................................................................................................................35

7.9 STATUS DISPLAY SCREENS ...................................................................................................................................35 7.10 SSPA SHUTDOWN.................................................................................................................................................36 7.11 MONITOR CALIBRATION CHARTS .........................................................................................................................36 7.12 ALARMS AND FAULTS ...................................................................................................................................37

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CONTENTS (Continued)

Page

7.13 THERMAL ALARMS AND FAULTS...............................................................................................................37 7.14 RESETTING THE SSPA...........................................................................................................................................37

7.14.1 Using the Serial Interface ...........................................................................................................................38 7.14.2 From the Front Panel ..................................................................................................................................38

8. MAINTENANCE AND TROUBLESHOOTING..................................................................................................39 8.1 MECHANICAL PREVENTIVE MAINTENANCE .........................................................................................................39 8.2 CHECKING THE COOLING SYSTEM.........................................................................................................................39 8.3 TROUBLESHOOTING...............................................................................................................................................39

8.3.1 Connection to Line Voltage Precaution .....................................................................................................39 8.3.2 Non-User-Serviceable Modules .................................................................................................................39 8.3.3 Fuses............................................................................................................................................................40 8.3.4 Circuit Breakers ..........................................................................................................................................40 8.3.5 Main Fault Diagnosis..................................................................................................................................40 8.3.6 Power System Fault Diagnosis...................................................................................................................41 8.3.7 SSPA Fault Diagnosis.................................................................................................................................41 8.3.8 Temperature Fault Diagnosis .....................................................................................................................41 8.3.9 Low Output Power Fault Diagnosis ...........................................................................................................42 8.3.10 High Reflected Power Fault Diagnosis ......................................................................................................42 8.3.11 Replacement of Fans (each unit) ................................................................................................................42

8.4 MODULE REPLACEMENT.......................................................................................................................................42

9. APPENDIX - A: ELECTRICAL SPECIFICATIONS..........................................................................................43

10. APPENDIX - B: PACKING LIST ...........................................................................................................................44

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FIGURES

Page

FIGURE 1: PRODUCT OUTLINE...............................................................................................................9 FIGURE 2: BLOCK DIAGRAM ...............................................................................................................12 FIGURE 3: BACK PANEL CONNECTORS ...............................................................................................13 FIGURE 4: DISCRETE INTERFACE - PROPOSED MONITOR AND CONTROL CIRCUIT..............................17 FIGURE 5: INITIAL PAGE OF THE COMMUNICATION PROGRAM...........................................................26 FIGURE 6: PAGE #1 OF THE COMMUNICATION PROGRAM...................................................................27 FIGURE 7: PAGE #2 OF THE COMMUNICATION PROGRAM ..................................................................29 FIGURE 8: PAGE #3 OF THE COMMUNICATION PROGRAM...................................................................30

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TABLES

Page

TABLE 1: CONNECTORS...............................................................................................................13 TABLE 2: RS-422 INTERFACE.......................................................................................................14 TABLE 3: SERIAL RS-422 INTERFACE (J2) – PIN ASSIGNMENTS .......................................15 TABLE 4: DISCRETE INTERFACE (J3) – PIN ASSIGNMENTS................................................15 TABLE 5: ENVIRONMENTAL CONDITIONS.............................................................................19 TABLE 6: MECHANICAL SPECIFICATIONS..............................................................................20 TABLE 7: POWER REQUIREMENTS............................................................................................20 TABLE 8: STATUS INDICATORS .................................................................................................23 TABLE 9: REDUNDANCY INDICATORS (ONLY FOR REDUNDANT SYSTEMS)...........................23 TABLE 10: FRONT PANEL DISPLAY AND CONTROLS..........................................................23 TABLE 11: RS-422 SERIAL INTERFACE CONNECTION INFORMATION ...........................25 TABLE 12: ELECTRICAL SPECIFICATIONS..............................................................................43 TABLE 13: PACKING LIST P/N 195-316450-041 .........................................................................44

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1. SAFETY To prevent the risk of injury to personnel or loss related to equipment malfunction Advantech usesthe following symbols for safety related information. For your own safety, please read theinformation carefully BEFORE operating the equipment. Symbols used in manual:

WARNING! This indicates a hazardous procedure that may result in serious injury ordeath if not performed properly.

CAUTION! This indicates a hazardous and dangerous procedure that may result inlight-to-severe injury or loss related to equipment malfunction, if properprecautions are not taken.

-------------------------------------------------- WARNING---------------------------------------------------- When supplying power to the amplifier, use the 3-pin connector provided and connect it to agrounded power outlet. Also, connect a ground strap between the station’s ground bus and theground screw located on the rack. If power is supplied without grounding the amplifier, there is arisk of receiving a severe or fatal electric shock. In the context of this document any voltage that is lethal is viewed as ‘High Voltage’. The primepower potential (90-265 VAC) applied to the amplifier is known to cause injury or death. -------------------------------------------------- WARNING---------------------------------------------------- Servicing is limited to the module replacement described in Section 8.3 of this manual. DO NOTdisassemble the modules or repair/replace any of the individual components. Only qualifiedservice technicians should service the modules or replace the individual components. There arehigh-voltage parts within the amplifier, which present a risk of severe injury to the untrainedpersonnel. In addition, there is a risk of damaging the delicate components. -------------------------------------------------- WARNING---------------------------------------------------- ALWAYS TERMINATE THE RF OUTPUT WAVEGUIDE OF THE AMPLIFIER WITHAN RF LOAD CAPABLE OF DISSIPATING FULL CW RF POWER. ALSO,TERMINATE THE RF INPUT CONNECTOR OF THE AMPLIFIER TO AVOID THEPOSSIBILITY OF THE UNIT BEING DRIVEN BY STRAY LEAKAGE SIGNALS. Incorporate the terminations prior to applying prime power to the amplifier. This preventsself-oscillation and irradiation from and into the local environment. If the RF source is notconnected to the amplifier correctly, the unit may go into a self-induced mode and generate highlevels of RF energy.

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Destruction caused by an excessive load voltage standing wave ratio (VSWR) will void thewarranty. Although the amplifier has an internal VSWR protection of higher than 3:1 and willautomatically shutdown (with a delay of 1 second), it is a safe procedure to avoid the unwantedeffects. ---------------------------------------------------- WARNING--------------------------------------------------- DO NOT LOOK INTO THE RF OUTPUT PORT OF THE POWERED AMPLIFIER! Handle the powered amplifier with extreme care. Although the levels of microwave radiation donot induce immediate physical discomfort in most individuals the levels may be sufficiently high toinduce long-term effects. The eyes are the most vulnerable parts of the body. The maximum permissible levels of exposure are quite low compared to the power levels of theamplifiers built by Advantech (e.g. less than 10 mW versus 20 to 500 W for the units). Themaximum permissible levels are currently being studied by a number of organisations. In the pastthe U.S. safety Code established a dosage rate of 10 mW/cm2. Currently, consideration is beinggiven to reduce the permissible level to 1 mW/cm2 in the United States, as has been the case forseveral European countries. -------------------------------------------------- CAUTION---------------------------------------------------- THE AMPLIFIER UNIT IS HEAVY (27 kg; 60 lb.)! TWO INDIVIDUALS SHOULD LIFTAND MOVE this equipment. There is a risk of back injury, if carried or lifted by a single person. In addition to this Section, included by reference are the following pertinent sections of theInternational Standard IEC-215, ‘Safety requirements for radio transmitting equipment’: Appendix D, ‘GUIDANCE ON ASSESSING THE COMPETENCE OF PERSONNEL FORDESIGNATION AS SKILLED’, and also Sub-clause 3.1 of the Standard. Appendix E, ‘GUIDANCE ON SAFETY PRECAUTIONS TO BE OBSERVED BYPERSONNEL WORKING ON RADIO TRANSMITTING EQUIPMENT’, and also Sub-clauses3.2, 3.7 and 22.1 of the Standard.

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2. GENERAL INFORMATION

2.1 INTRODUCTION

The ARMA-C125-CTM is a C-Band (5.850 - 6.425 GHz) 125-Watt Solid State Power Amplifier(SSPA) designed for satellite up-link communication systems. The SSPA is part of the ARMAseries featuring a microprocessor based monitor and control system anda Serial Interface port. Theunit also features a DC main power supply and a forced air cooling system. The SSPA isconstructed for indoor rack-mount installation see Figure 1. For a reliable and trouble free operation, built-in monitor and control features indicate the currentstatus of the SSPA and provide fault detection and protection when operating outside its normaloperating conditions. The SSPA also allows the user the choice of using the front panel controls orthe rear interfaces for monitoring and control. The SSPA may be combined with a second unit to form a 1:1 Redundant System or with two otherunits to form a 1:2 Redundant System. The units can be installed easily into the same rack. Redundancy kits are available to configure the units for redundant system operation.

2.2 ABOUT THIS MANUAL

This manual contains information that describes the installation, operation, and maintenanceprocedures for the 125-Watt C-Band rack-mount SSPA. Because specialised training is requiredfor some phases of installation and operation, certain parts of this manual are directed only toproperly trained personnel. Warnings appear at the appropriate points to caution all users of thepotential RF and high-voltage hazards. For a safe and versatile operation, please read the information provided in this manual carefullyBEFORE using this equipment. ADVANTECH Advanced Microwave Technologies, Inc. has prepared this manual for use as aguide for the proper installation, operation and maintenance of ADVANTECH equipment andcomputer programs. The drawings, specifications and information contained herein are propertyof ADVANTECH Advanced Microwave Technologies, Inc. Unauthorised use or disclosure of thesedrawings, specifications and information is strictly prohibited. They shall not be reproduced,copied or used in whole or in part as the basis for manufacturing or sale of the equipment orsoftware programs without the prior written consent of ADVANTECH Advanced MicrowaveTechnologies, Inc.

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Figure 1: Product Outline

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3. MAJOR SUBSYSTEMS AND THEIR FUNCTIONS

3.1 DESCRIPTION

This Section describes in detail how the major subsystems and their components function withinthe SSPA. The major subsystems within the SSPA consist of the RF Subsystem, Power SupplySubsystem and the Monitor and Control Assembly. These subsystems are interconnected using thededicated harnesses, semi-rigid cables and the waveguides. To clarify the explanation of thesubsystems in the following paragraphs, Figure 2 illustrates the block diagram and Figure 3 showsthe connector locations for the SSPA. TABLE 1 lists all of the connectors used by the SSPA.

3.2 RF SUBSYSTEM

The RF Assembly is capable of providing an output power at the 1 dB gain compression point(P1dB) of 50 dBm and with a minimum gain of 60 dB. To achieve these requirements the RFSubsystem within the SSPA contains the RF Input Coupler, High Power Amplifier Module andthe Output Waveguide Arm Assembly. 3.2.1 RF INPUT COUPLER The RF Input Coupler Circuit provides an input return loss of 18 dB minimum, over the fullfrequency band at the ‘N’-type RF input connector (J1) of the SSPA and a 10 dB coupling loss forthe ‘N’-type RF input monitor connector (J8). The RF input monitor port is used for theindependent monitoring of the SSPA input power levels through the use of an external powermeter. 3.2.2 HIGH POWER AMPLIFIER MODULE The High Power Amplifier Module has twelve discrete GaAsFET RF amplification devices thatare capable of providing the required P1dB. This module consists of a low noise amplifier (LNA)section, high power amplifier (HPA) section, two internal attenuators and a power conditionerboard. The first attenuator or gain control adjusts the RF input signal power level passing through theLNA section. Using either the front panel pushbuttons or the correct serial interface commandchanges the amount of attenuation provided by the attenuator. The Monitor and Control Assemblyresponds to the command by sending a DC voltage proportional with the attenuation. This voltageis sent through the Power Conditioner Board Assembly and then to a pin diode within theattenuator that changes the RF signal power level. The attenuator is capable of reducing the RFouput power level by up to 18 dB, which allows the user to set the output power level to a desiredvalue or below saturation.

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The second attenuator maintains the gain of the High Power Amplifier Module constant withchanges in temperature. A temperature sensor within the HPA section sends a DC voltage inproportion with the temperature through the Power Conditioner Board Assembly and then to a pindiode within the attenuator. The function of the pin diode is the same as for the gain controlattenuator.

The Power Conditioner Board Assembly within the module contains the bias, control andprotection circuitry that provides:• DC voltage removal/restoration to the GaAsFET devices within the LNA and HPA sections.• A temperature dependent DC voltage to the second attenuator.• Sends an alarm signal to the Monitor and Control Assembly when detecting a fault or over

temperature.

The Power Conditioner Board Assembly will remove the DC voltages to the LNA and HPAsections if:• The user sends a MUTE command.

• The ambient temperature exceeds 80°C, or• Any of the GaAsFET devices fails. 3.2.3 WAVEGUIDE ARM ASSEMBLY The Waveguide Arm Assembly contains two RF detectors for monitoring both the forward andthe reflected output power levels and an isolator that reduces the transmission of the unwantedreflected RF signals. It also contains an RF coupling directed to the RF Output Monitor Port (J4),which permits the independent monitoring of SSPA output power levels via an ‘N’-type connectoron the front panel of the SSPA. A spectrum analyser or a portable power meter can be connectedto this port. A calibrating table of the RF coupling, for different in-band frequencies, is provided inthe Test Data Sheets accompanying the unit.

3.3 POWER SUPPLY SUBSYSTEM There are two power supplies in each SSPA. The main power supply provides a single output,+12 VDC high current to the High Power Amplifier Module and a filtered, +12 VDC low currentsupply for the secondary power supply and the speed control circuit. The secondary power supplyhas multiple outputs for operating the Monitor and Control Assembly and the front panel display.The speed control circuit delivers a temperature controlled voltage between 11.5 VDC and60 VDC that allows for the different rotating speeds of the cooling fans. The main power supplyoperates from a 90-132 or 180-265 VAC (autoranging), 47-63 Hz, single phase source.

3.4 MONITOR AND CONTROL ASSEMBLY The Monitor and Control Assembly monitors all of the important operating parameters of theSSPA and communicates externally by using the Serial and Discrete Interfaces or the front panelcontrols and display. This module controls the operating mode of the SSPA (remote or local).

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Figure 2: Block Diagram

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Figure 3: Back Panel Connectors

TABLE 1: CONNECTORS

Connector Function Description Mating Connector

(J1) RF Input N - Type (F) N - Type (M)

(J2) Serial interface DE - 9S (F) DE - 9P (M)

(J3) Discrete Interface DB - 25S (F) DB - 25P (M)

(J4) Output Sample Port N - Type (F) N - Type (M)

(J5) AC line IEC - 320 (M) IEC - 320 (F)

(J6)* Redundant Interface* Not available Not applicable

(J7) RF Output CPR -137 (Grooved) CPR -137 (Flat)

(J8) RF Input Monitor Port N - Type (F) N - Type (M) * The Redundant Interface is operational only for redundant systems

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4. INTERFACES Each SSPA is provided with four interfaces that can be used to connect it with several optionalexternal devices. The interfaces for this model (ARMA-C125-CTM) are listed bellow: 1. Serial Interface (J2): This interface provides all of the monitor and control features and

remote control communication through the RS-422 serial communication port.

2. Discrete Interface (J3): This interface offers the essential SSPA monitoring and control byusing individual signals per SSPA command or status.

3. RF Output Monitor Interface (J4): This interface provides a measure of the output power ofan SSPA.

4. RF Input Monitor Interface (J8): This interface provides a measure of the input power of anSSPA.

4.1 SERIAL INTERFACE (1:2 REDUNDANT SYSTEM) The Serial Interface port (J2) is used to monitor and control the SSPA from a personal computerstation, using the RS-422 communication protocol, see TABLE 2. This port is located on the rearpanel of the SSPA, see Figure 3. The connector is a DB subminiature type 9S (9 pins, female)with a pin assignment shown in TABLE 3. An RS-232/RS-422 adapter must be used for communicating with an IBM compatible personalcomputer running under DOS. Direct connection or direct communication from port (J2) of theSSPA to the RS-232 port of the PC may permanently damage the SSPA. A communicationsprogram is provided with each SSPA allowing full access to unit’s functions, see Section 7.3.2.

CAUTION! Direct connection or direct communication from J2 of the SSPA to the RS-232port of a PC may cause permanent damage to the controller within the SSPA.

TABLE 2: RS-422 INTERFACE

Baud rate 9600 (default factory setting)

Data Bits 7

Stop Bit 1

Parity EVEN

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TABLE 3: SERIAL RS-422 INTERFACE (J2) – PIN ASSIGNMENTS

Name Type Pin # Active condition

TX422_H Serial port (output) 6 Serial transmit port, RS-422 TX+ levels

TX422_L Serial port (output return) 4 Serial transmit port, RS-422 TX- levels

RX422_H Serial port (input) 9 Serial receive port, RS-422 RX+ levels

RX422_L Serial port (input return) 3 Serial receive port, RS-422 RX- levels

RS422_C Serial port (common) 5 System common

1 Shield ground / safety ground

4.2 DISCRETE INTERFACE

The Discrete Interface provides all of the necessary functions to monitor and control the SSPA.The unit provides open collectors for the continuous monitoring of alarms, faults, amplifier statusand amplifier enable/disable switching. This interface is located on the rear panel at connector (J3)of the SSPA, see Figure 3. The connector is a DB sub-miniature type 25S (25 pins, female) with apin assignment as shown in TABLE 4. All control signals are opto-isolated. Form-C relaycontacts and the interlocking with external devices provide the required status signals.Figure 4 provides a detailed circuit for utilizing the interface.

TABLE 4: DISCRETE INTERFACE (J3) – PIN ASSIGNMENTS

Name Type Pin # Active condition PWRON_S output (active closed) 1 Indicates controller power is on.

RFMUT_S output (active closed) 2 Indicates RF output is muted (i.e. off).

ALARM_S output (active open) 3 Indicates operation at base plate temperature > 70°C but

< 80°C, or with degraded performance; caused byinternally detected alarms.

FAULT_S output (active open) 4

Indicates a major failure; operation is not possible.RF Amplifier GaAsFET drain voltages are automaticallyturned off. Caused by: base plate temperature > 80°C,drain voltage > 13V or < 9V,drain current > maximum rated + 20%,load VSWR > 3.0:1, or internally detected faults.

RFOUT_S output (active closed) 5 Indicates RF output power greater than the factory setthreshold. Refer to Section 7.7.3.

REMOT_S output (active closed) 6 Indicates that the system control is via the remotecomputer I/F (CIF).

DISOU_C output (common) 7 System common.

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TABLE 4: DISCRETE INTERFACE (J3) – PIN ASSIGNMENTS

Name Type Pin # Active condition RFENA_A input (active closed) 8 Enables amplifier.

CIFRC_A input (active open) 9 Enables remote computer I/F (CIF).

GAIUP_A input (momentary closed) 10 To decrease attenuator setting. Step size: 0.1 dB.

GAIDW_A input (momentary closed) 11 To increase attenuator setting. Step size: 0.1 dB.

AUTOS_A input (active open) 12* Enables automatic switch over to standby unit, upon fault

detection.Alternate position is manual mode, for servicing.

SWTWG_A input (momentary closed) 13* Waveguide switch toggle action to connect either unit ‘A’or unit ‘B’ to antenna port.

GND ground 14 Ground

DISIN_C input (common) 15 System common.

SWTU1_S output (active closed) 16* Normally closed, form-C relay contact of the waveguideswitch, when unit ‘A’ is connected to the antenna port.

SWTU2_S output (active open) 17* Normally open, form-C relay contact of the waveguideswitch, when unit ‘A’ is connected to the antenna port.

SWTUS_R output (return) 18* Form-C relay contact common.

STDBY_S output (active closed) 19* Handshake signal indicating that the unit is in a

STAND-BY state. This implies that there are no faults oralarms and that the unit is in auto mode.

* = Pins 12, 13, 16, 17, 18 and 19 are active for the 1:1 or 1:2 Redundant System options only.

Notes:1. All outputs (except on pins 16, 17 and 18) are open-collector NPN transistors that either are

turned on (active closed) or are turned-off (active open). These NPN transistors have thefollowing characteristics:

Vce max. = 24 VDC Vce, sat = 0.8 VDC @ Ic = 50 mA Iceo = 100 µA @ Vce = 12 VDC Maximum sinking current = 50 mA

2. All inputs connect to one terminal of a voltage comparator with an internal protection resistorand diodes. These inputs are pulled up to the internal +12 VDC and have these characteristics:

Maximum input voltage < 24 VDC Open state, input resistance > 50 kΩ Close state, input source impedance < 1kΩ Close state, required sink current < 1 mA The input is active in a close state, when it is connected to the circuit common J3-15 through anopen transistor or a contact closure of a relay.

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For a momentarily closed input, the input pulse width must be greater than 10 ms minimum. Alonger pulse width will allow the attenuation to change by more than 0.1 dB.

3. Remote operation: Once the remote control mode is selected from the front panel of therack-mount SSPA, the remote control Discrete Interfaces is available for operation.

4. At anytime during the normal SSPA operation, only one remote control interface is active (i.e.ready to accept an input command) and the control of redundant waveguide switch is ignored ifthe optional redundant software is not installed.

5. The selection of the remote control interface is through the discrete input J3-9. Theactive-open input at J3-9 will enable the commands from the Serial Interface to beacknowledged and carried out. The active-closed input (i.e. grounding) will enable the remoteDiscrete Interface. The monitoring outputs are always active (valid) at either remote interface.

Figure 4: Discrete Interface - Proposed Monitor and Control circuit

15

8

9

12

10

11

13

7

19

18

17

6

5

4

3

2

FROM J3

DISIN_C

TO J3-12OF 2-nd SSPA

TO J3-15OF 2-nd SSPA

16

PWRON_S

RFMUT_S

ALARM_S

FAULT_S

RFOUT_S

REMOT_S

SWTU1_S

SWTU2_S

SWTUS_R

STDBY_S

DISOU_C

SWTWG_A

GAIDW_A

GAIUP_A

AUTOS_A

CIFRC_A

GND

INTERFACE ON

GRN YELGRN

YEL RED

+12V

GRN GRN

YEL

1

GRN

ALL RESISTORSARE 4.7 k ΩΩΩΩ

RFENA_A

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4.3 RF INPUT AND OUTPUT MONITOR PORTS The input and output monitor ports on the front panel provide a means to measure the input andoutput signals (in dBm) using the appropriate test equipment. The coupling loss, normallyassociated with RF sample, must be added to the power level measured at the sample port in orderto obtain the proper value for the input or output power level. The coupling loss may vary with frequency and the specific characteristics of the RF circuit.Accordingly, a calibration chart is provided on the front panel display for each sample port. Thecalibration chart for the port identifies the coupling loss at a number of frequencies across theoperating range of the SSPA. The loss associated with intermediate frequencies can be obtainedby interpolation.

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5. UNPACKING AND INSTALLATION

5.1 INSTALLATION CONSIDERATIONS

1. Verify that the installation site meets the environmental requirements listed in TABLE 5.

2. It is recommended that the SSPA should be installed into a 19-inch rack, see TABLE 6 for themounting requirements.

3. Regardless of the installation position, ensure that there is a clearance of at least 12 inches(30 cm) between the air intake/exhaust (back of the unit) and any surface which may obstructthe airflow.

CAUTION! The SSPA is heavy (27 kg, 60 lbs.)! Obtain assistance from another individual.There is a risk of back injury if the unit is carried or lifted by only one individual.

5.2 INSTALLATION PROCEDURE

1. Mount the SSPA into a 19-inch vertical rack using four #10-32 x 1/2 inch screws, see

TABLE 13, item 11.

2. Connect the waveguide output of the SSPA to the waveguide system leading to an antenna byusing one waterproof gasket, eight and eight #10 lock washers, see TABLE 13, items 10, 12,and 13).

3. Connect the RF source to the RF input N-type connector J1 see Figure 3.

WARNING! Proper grounding of the AC power outlet is necessary for personnel andequipment safety. Use the ground stud provided on the base rack toproperly ground the entire system.

4. Verify that AC power source is turned OFF.

5. Verify that the AC power source satisfies the requirements listed in TABLE 7.

6. Connect the AC power source to the AC connector (J5) at the back-panel of the unit.

TABLE 5: ENVIRONMENTAL CONDITIONS

Temperature: Non operating (continuos exposure) Operating (ambient)

- 40° C to + 85° C 0° C to + 50° C

Relative humidity 95 %, Non-condensing Altitude 10,000’ AMSL, derated 2 °C/1,000’ from AMSL

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TABLE 6: MECHANICAL SPECIFICATIONS

Physical Dimensions See Figure 1 ‘Product Outline’

Approximate Weight 60 lbs (27 kg)

Mounting Requirements See Figure 1 ‘Product Outline’

TABLE 7: POWER REQUIREMENTS

Power Requirements 90-132 or 180-265 VAC (autoranging), 47- 63 Hz

Power Consumption 8 A maximum @ 110 VAC

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6. PRE-POWER AND SYSTEM CHECKOUT This Section describes the procedure for turning on the SSPA for the first time. It also describesthe steps for an initial checkout of the system.

WARNING! The information presented in this Section is addressed to the technicians whohave specific training in, and knowledge of the Microwave PowerTransmitters. Inappropriate use of an SSPA may cause serious injury to theoperator or damage to the equipment. Do not attempt to operate an SSPAbefore becoming thoroughly familiar with the contents outlined in thisSection.

6.1 PRE-POWER PROCEDURES

Before applying prime power to the SSPA, verify that the following conditions are met:

• The voltages of the station’s AC prime power matches those marked on the ID label. It is90-265 VAC for these units.

• The prime power station is properly grounded.

• All connections are secure and there is no evidence of pinched wires and loose hardware.

• The main power switch on the prime power station is turned OFF.

• The RF Input and RF Output ports of the SSPA are connected to the applicable matched sourceand a proper load both capable of withstanding full CW RF power.

• The cooling fans are not obstructed. The SSPA will meet all RF performance specifications within thirty minutes after the applicationof prime power, see APPENDIX - A: ELECTRICAL SPECIFICATIONS.

CAUTION! Failure to verify these pre-power conditions may damage the SSPA or cause it tomalfunction. Operating the SSPA before verification may void the warranty.

6.2 OPERATIONAL SETTINGS VERIFICATION

The SSPA arrives with all of its factory-pre-set operational values that meet the requirements of atypical installation. Before starting the SSPA at the installation site, check the configurablesettings and if necessary, reset to meet the customer’s requirements.

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7. OPERATION

7.1 INTRODUCTION

This Section describes the normal operation of the SSPA. The design of this product allows forminimal operator intervention and maintenance. The SSPA is completely self-controlled and canfunction reliably in a very harsh environment. The SSPA may be operated by using the RS-422 Serial Interface, Discrete Interface or from thefront panel controls and display. All methods provide full access to the unit’s functions includingthe system monitoring of all operating parameters, control of output power and operational status. In LOCAL mode and with the aid of the keypad and the LCD display, the user can navigatethrough a series of menus, which allow for the setting of the key parameters. The LCD digitaldisplay provides an indication of the critical performance indicators. A series of LED indicatorsprovide a summary of the operational status of the SSPA, see TABLE 8 and TABLE 9. In REMOTE mode and using the software supplied with the SSPA or similar communicationssoftware, the same monitor and control functions can be accessed through the RS-422 interface(see Section 7.7.2 for more information). The front panel and the Discrete Interface provide the user with alarm and fault conditions,amplifier status, output attenuation setting, redundant system operation and remote RF enablecapability.

CAUTION! Providing a contact between pins 8 & 15 of the Discrete Interface connectorpermits SSPA operation. When these pins are not in contact, the amplifier isconsidered to be in a hardware shutdown mode and cannot be restarted by anymeans.

In the 1:2 Redundant System, two SSPA are considered to be ON-LINE (RF output of both SSPAis directed to the antenna) while the third is in STAND-BY mode (RF output directed to the highpower load). The user can designate an SSPA as MUTE, effectively preventing it from beingeither in the ON-LINE or STAND-BY mode, thus disabling the automatic switching system.

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TABLE 8: STATUS INDICATORS

Function Description of ON condition Display

Power On AC power supplied LED, Green

RF On RF output signal detected LED, Green

Remote Remote amplifier control is enabled.Control of some functions by the front panel is disabled. LED, Green

Mute RF output disabled by user LED, Amber

Alarm Thermal, low output and waveguide detected LED, Amber

Fault Fault condition detected LED, Red

TABLE 9: REDUNDANCY INDICATORS (only for redundant systems)

Function Description of ON condition Display

Auto Applies to redundant system (auto. switching) LED, Green

ON-LINE Applies to redundant system (SSPA to antenna) LED, Green

STAND-BY Applies to redundant system (SSPA to load) LED, Amber

7.2 FRONT PANEL CONTROLS

Six keys on the front panel provide access to the various display functions and allow for the localcontrol of the SSPA, see TABLE 10. The display operates with a menu system that providesquick access to all of the monitor and control features. In general, the [] and [] keys are the primary means by which the user moves between differentdisplays and menu options. The [Enter] key is used to select a menu item and to confirm changesmade to the various operating parameters. The [Clear] key is used to reset the FAULT status of theSSPA, once the condition that caused the fault has been corrected. For specific instructions on thefunctionality of each sub-menu refer to the appropriate section of this manual.

TABLE 10: FRONT PANEL DISPLAY AND CONTROLS

Display Keypad

20 characters x 2 rows alphanumeric 6 keys: [], [], [], [], [Enter] & [Clear]

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7.2.1 FRONT PANEL MENU SYSTEM

MAIN MENU SUB - MENUS

Display product identification

Display configuration Utilities (press [Enter] to access sub-menu) Perform LED and display test

Reflected power display (dBm)

Output power display (dBm)

Power amplifier hot spot temperature display (°C) Power amplifier shroud temperature display (°C)

Power supply current display (A)

Display input/output monitor couplingfactor across frequency range Monitor calibration

(press [Enter] to access sub-menu) Set output power low level threshold

Switch between LOCAL and REMOTE control mode

Select POWER ON or MUTE(not available in REMOTE control mode) Select Automatic OR Manual switching(for redundant operation only) Press [Enter] to put SSPA ON-LINE(forced switch, for redundant operation only) Adjust attenuation level(not available in Remote control mode)

7.3 REMOTE SERIAL INTERFACE

7.3.1 REMOTE SET-UP AND WIRING INSTRUCTIONS The standard SSPA is uses an RS-422 Serial Interface. The communication software is providedfor the standard IBM compatible personal computer (running DOS 3.1 or higher) with anRS-232 serial port. Note that an RS-422/RS-232 adapter (available as an option) is required toestablish communication with the PC serial port.

CAUTION! Direct connection or direct communication from port J2 of the SSPA to theRS-232 port of a PC will cause permanent damage to the controller within theSSPA.

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TABLE 11 provides the wiring instructions for the proper operation of the Serial Interface.

TABLE 11: RS-422 SERIAL INTERFACE CONNECTION INFORMATION

Serial Interface (J2),Pin # Active condition RS-422/RS-232

Adapter, Pin #

6 Serial transmit port, RS-422 TX+ levels. 17

4 Serial transmit port, RS-422 TX- levels. 3

9 Serial receive port, RS-422 RX+ levels. 14

3 Serial receive port, RS-422 RX- levels. 2

5 System common. 1

1 Shield

7.3.2 USING THE RS-422 SERIAL INTERFACE AND THE COMMUNICATION SOFTWARE The RS-422 Serial Interface provides a powerful means of monitoring and controlling the keySSPA parameters. A communications program is provided with the unit that will allow full accessto all of the amplifier functions. Function key F10 is reserved to go to the next menu page. There are three menu pages (screens). Function keys F1 to F9 are used to control/query the SSPA. All queries display the receivedpacket in full. The header ‘<00A’ should be disregarded as well as the trailer ‘#x’ where ‘x’ is achecksum character. NOTE: Press ALT-X to exit the program.

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INITIAL MENU (SCREEN) PAGE When started, the communication program will prompt the user to enter the number of thecommunication port at the PC to be used for communication. The following image will bedisplayed on the PC. The user should introduce the communication-port number (usually 2) andthen press the <Enter> key.

Figure 5: Initial Page of the Communication Program After entering the communication-port number the next page menu (Page #1) will be displayed onthe screen of the PC.

Copyright 1995.F1ID&SerF2 Leds F3MessagF4Param F5Reset F6MUTEonF7MUTEofF8Atten F9Unit# F0 More

ADVANTECH - Advanced Microwave Technologies, Inc.

Address : 0

COM port [1...4]:

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MENU (SCREEN) PAGE #1

NOTE: Commands ‘F5’, ‘F6’, ‘F7’ & ‘F8’ require that the unit to be in the REMOTEmode. See function key ‘F2’ bytes 9 & 13 below.

Figure 6: Page #1 of the Communication Program

F1 - Queries the unit for ID and serial number. F2 - Queries the SSPA for LEDs information. These are the digital outputs of the unit that

may be used to light the LEDs. After disregarding the header, following the ‘L’ the bytes(‘0’ or ‘1’) represent

1. ‘1’ - The SSPA is powered. (Will always be ‘1’)2. ‘1’ - RF output power detected.3. ‘1’ - Alarm condition exists4. ‘1’ - Fault condition exists5. ‘1’ - This SSPA is connected to the antenna (ON-LINE)6. ‘1’ - This SSPA is connected to an RF load (STDBY)7. ‘1’ - The SSPA is shutdown by the user (MUTE)8. - No info9. ‘1’ - SSPA is under remote control / ‘0’- LOCAL control10. ‘S’11. ‘1’ - A message is available / ‘0’- no messages12. ‘1’ - A request to go LOCAL was issued / ‘0’- no event13. ‘1’ - Computer interface in control / ‘0’- Hardware interface in control (if byte #9 is a ‘1’)

Copyright 1995.F1ID&Ser F2 Leds F3MessagF4Param F5Reset F6MUTEon F7MUTEof F8Atten F9 Unit# F0 More

ADVANTECH - Advanced Microwave Technologies, Inc.

Address : 0

Leds info : >00AL110010 011 S001 110#KMessage : >00AM#PParameters : >00AP A0.0 C150.8 M30.0 O55.2 R17.3 TM49.2 TS28.6 VS11.9

PAGE - 1 - PROTOCOL: ADV, 9600, E Rev 1.40Alt-X to exit

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F3 - Requests for alarm or fault message. No message bytes are shown if no messages are

available. See ‘F2’ response byte 11. F4 - Requests for various parameters. After disregarding the header, ‘P’ indicates this is a

parameter response:

‘A’ is followed by an attenuation level (20.0 dB on power-up)

‘C’ is followed by the supply current

‘M’ is followed by the user threshold in dBm

‘O’ is followed by the output power in dBm

‘R’ is followed by the reflected power n dBm

‘TM’ is followed by the power module’s hot spot temperature in Celsius

‘TS’ is followed by the shroud temperature in Celsius F5 - Resets the faults and restarts the SSPA for all alarm conditions except over temperature,

(which restarts by itself when the unit cools down). F6 - MUTE the SSPA. F7 - Brings the SSPA back to its pre-MUTE state. F8 - Sets the attenuator level. For 0-dB level enter 0, for 15 dB enter 150, for 20 dB enter 200.

(0.1 dB steps, no decimal required). F9 - Selects the unit. Any value between 0 and 15. (Default: 0) F10 - ‘MORE’ goes to next menu (screen) page.

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MENU (SCREEN) PAGE #2

NOTE: These commands require that the SSPA be in REMOTE mode with the SerialInterface in control. See menu (screen) page #1, function key ‘F2’ bytes 9 & 13.

Figure 7: Page #2 of the Communication Program

F1, F2 & F8 - N/A (not available)

F3 - Prevents the SSPA from going into the LOCAL mode. This function is used withthe rack-mount SSPA where the user requests to go into local mode but the control room personnel wants to lock out the user.

F4 - Puts the SSPA into AUTO mode.

F5 - Puts the SSPA into MANUAL mode.

F6 - Sets the waveguide switch so that the RF Output goes to an antenna. (Unit must be inMANUAL mode).

F7 - Sets the waveguide switch so that RF Output goes to an RF load. (Unit must be inMANUAL mode).

F9 - Sets user defined threshold. This value should be from 300 to 500 representing 30.0 dBm to 50.0 dBm. When the output level falls below this level an alarm will be generated.

F10 - ‘MORE’ goes to next menu (screen) page.

Copyright 1995.F1 F2 F3RemoteF4 Auto F5ManualF6SWAnt F7SWLoadF8 F9ThreshF0 More

ADVANTECH - Advanced Microwave Technologies, Inc.

Address : 0

Parameters : >00AQSWT0 A0.0O55.2

PAGE - 2 - PROTOCOL: ADV, 9600, E Rev 1.40Alt-X to exit

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MENU (SCREEN) PAGE #3

Figure 8: Page #3 of the Communication Program

F1 - Put PA in Remote control

F2 - Query for LEDs status

F3 - No priority

F4 - Establishes priority for SSPA ‘A’

F5 to F6 - N/A (not applicable)

F7 - Changes addresses (communications) of the SSPA. This address will take effect after thenext power-up of the unit or using menu (screen) page #1, function key ‘F5’ for Reset.

F8 - Loads Flash page A (unit will wait for flash data to be uploaded)

F9 - Loads Flash page B (unit will wait for flash data to be uploaded)

F10 - ‘MORE’ returns to menu (screen) page #1.

CAUTION! Inadequate loading of the software by the F8 ‘PageA’ command will disable thecontroller.

Copyright 1995.F1Remote F2LedsF3NoPrio F4PriorAF5ProtPC F6ProtPAF7AddrPAF8PageA F9PageB F0 More

ADVANTECH - Advanced Microwave Technologies, Inc.

Address : 0

Leds info : >00AL101010 011 S101 00#L

PAGE - 3 - PROTOCOL: ADV, 9600, E Rev 1.40Alt-X to exit

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7.4 USING THE DISCRETE INTERFACE

Refer to Section 4.2 for the use of the Discrete Interface.

7.5 SOFTWARE CONFIGURATION SET-UP The program ADV.EXE is located on the diskette delivered with the SSPA. To use the software,first copy the file ‘ADV.EXE’ into the hard disk.

1. To execute the program, at the DOS prompt type ‘ADV’.

2. Connect the Serial Interface cable to the SSPA.

3. At the prompt, enter the COMM (serial) port number you are using (1, 2, 3 or 4).

NOTE: The protocol is 9600 baud, 8 bits and no parity (see TABLE 2).

4. Press the function key ‘F10’ twice to obtain menu (screen) #3.

5. Select the function key ‘F7’ (Addr) to configure the communications address for the SSPA.This is the number will be used to identify the SSPA for the monitor and control purposes.

6. At the prompt, enter a value from 0 through 15 (the default value is 0).7. Reset the SSPA by switching off the AC power and wait for 5 seconds before reapplying the

AC power. From this point onwards, to access a specific SSPA for the monitor or control purposes, use thefunction key ‘F9’ on menu (screen) #1. At the prompt enter the communication address of theSSPA.

8. Type ALT-X to exit the program.

7.6 RF CONFIGURATION SET-UP

7.6.1 SAFETY CONSIDERATIONS The VSWR protection at the output of the SSPA is designed to protect the unit against theaccidental operation with a blocked or open waveguide (VSWR 3:1) at the RF output connector.This feature causes the SSPA to shutdown automatically.

WARNING! RF RADIATION HAZARD! To prevent bodily harm and damage toequipment, ensure that the input and output RF ports are ALWAYSterminated and properly fastened BEFORE connecting the rack-mountamplifier to the line voltage. Note that this amplifier have sufficient gain andpower to cause destructive oscillation if the above precaution is not taken.

Please note that failure of the SSPA due to above condition will be attributed to abuse or neglectand is not covered by the standard warranty.

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7.7 POWERING UP THE SSPA Switch on the circuit breaker on the front panel. The POWER ON LED (green) will illuminate anda message will appear on the front panel display indicating that the unit is performingself-diagnostics. If everything is OK, a second message will appear identifying the model numberof the unit.

NOTE: If pins 8 & 15 of the Discrete Interface connector are not connected, then the RFportion of the SSPA will remain inoperative.

7.7.1 USING THE FRONT PANEL

1. Press the [] key to access the first menu function ‘UTILITIES’.

2. Press the [Enter] key to view the first screen of the ‘UTILITIES’ sub-menu, which displaysthe serial number of the unit and the hardware and software version numbers respectively.

3. Press [] to display the current system configuration. ‘Standalone’ indicates that the SSPA has been configured for a standalone operation (as opposed toredundant operation). The unit number is zero (0) by default, which is used to address the SSPAvia the Serial Interface.

4. Press the [] key to access the LEDs & DISPLAY TEST screen.

5. Use the [] and [] keys to adjust the contrast on the display as desired.

6. Press the [Enter] key to activate the display and the LED test. All indicators should now be litand the display should show the following:

7. Press the [Enter] key to return to the main menu. 7.7.2 SELECTING REMOTE/LOCAL CONTROL MODE The REMOTE (LOCAL) status of the SSPA determines if the following operations can beperformed through the Discrete/Serial Interface or from the front panel respectively. Thefollowing parameters are readjusted:

CONFIG: Standalone Unit: 0

LEDs & DISPLAY TEST Set LEDs & DISPL. on

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• Setting output attenuation level (gain adjustment)

• Setting alarm condition for low output power threshold When the REMOTE (LOCAL) LED indicator is lit, REMOTE control is selected. To switch to either LOCAL or REMOTE control mode perform the following steps:

1. From the main menu, press either the [] or [] keys successively to select the followingdisplay:

or

2. Press the [Enter] key to select LOCAL control, the SSPA will wait 30 seconds before yieldingto the local access. This measure allows a remote user to cancel the request for the local accessthrough the Serial Interface.

NOTE: The normal status of the SSPA is ‘REMOTE’. Therefore a local user mustalways change control back to ‘REMOTE’ after completing adjustments to theSSPA.

7.7.3 SETTING THE ALARM CONDITION FOR LOW OUTPUT POWER The SSPA has a variable gain feature that the user can set the minimum output power value (indBm) below which an alarm will be generated. Perform either Section 7.7.3.1 or 7.7.3.2.

7.7.3.1 Using the Front Panel

1. Verify that the SSPA is in LOCAL control mode (REMOTE/LOCAL LED indicator is OFF).

2. If not, switch to LOCAL mode as instructed in Section 7.7.2.

3. In the main menu, use the [] or [] key to select the MONITOR CALIBRATION display.

4. Press and hold the [Enter] key until the following display appears:

5. Use the [] and [] keys to select the minimum acceptable output power level below whichthe SSPA will signal an alarm condition.

STATUS: ____ <ENTER> FOR LOCAL CTL

STATUS: ____ MONITOR CALIBRATION

STATUS: ____ OUT POWER THRESHOLD

STATUS: ____ <ENTER> TO GO REMOTE

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Each press of the [] and [] keys either increases or decreases the output level by 0.1 dBincrements. Holding the [] or [] key will cause the display to increment/decrementautomatically at a faster rate. 6. Press the [Enter] key to confirm the selection.

7.7.3.2 Using the Serial Interface

1. Verify that the unit is in REMOTE control mode.

2. From menu (screen) #1, use the ‘F9’ function key to select the SSPA and then from menu(screen) #2, select ‘F9’ (‘Thresh’). At the prompt, enter the minimum output power level,disregarding the decimal point. For example, to request a minimum output power of30.0 dBm, enter 300.

7.7.4 GAIN ADJUSTMENT The output attenuation of the SSPA is set to the factory default setting of 10 dB, or the previoussetting stored in memory (2 minute waiting period). Perform either Section 7.7.4.1 or 7.7.4.2.

7.7.4.1 From the Front Panel

1. Verify that the SSPA is in LOCAL control mode (REMOTE/LOCAL LED indicator is OFF).

2. If not, switch to LOCAL mode as instructed in Section 7.7.2.

3. In the main menu, use the [] or [] key to select the ADJUST ATTENUATION display.

4. Use the [] and [] keys to select the gain attenuation level in dB. Each press of the [] or[] key either increases or decreases the attenuation by 0.1 dB increments. Holding the []or [] key will cause the display to increment/decrement automatically at a faster rate.

5. Press [Enter] to confirm the selection.

7.7.4.2 Using the Serial Interface

1. Verify that the unit is in REMOTE control mode (REMOTE/LOCAL LED indicator is ON). Ifnot, switch to REMOTE mode as instructed in Section 7.7.2.

2. From menu (screen) #1, use the ‘F9’ function key to select the SSPA and then press the‘F8’(‘Atten’) function key.

3. At the prompt, enter the desired attenuation level (from 0 to 400 corresponding to 0 to 40 dB ofattenuation, disregarding the decimal point). For example, to request 15.3 dB attenuation, enter153. For an attenuation level of 4.0 dB, enter 40.

STATUS: ____ ADJUST ATTENUATION

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7.8 POWERING UP THE SSPA To power up the SSPA (i.e. activating the RF portion of the SSPA) after a shutdown perform eitherSection 7.8.1 or 7.8.2. 7.8.1 USING THE FRONT PANEL

1. Verify that the SSPA is in the LOCAL control mode (REMOTE/LOCAL LED indicator isOFF).

2. If not, switch to LOCAL mode as instructed in Section 7.7.2.

3. In the main menu, use the [] or [] keys to select the TO POWER PA display.

4. Press the [Enter] key to confirm the selection. 7.8.2 USING THE SERIAL INTERFACE 1. Verify that the SSPA is in the REMOTE control mode (REMOTE/LOCAL LED indicator is

ON).

2. If not, switch to REMOTE mode as instructed in as instructed in Section 7.7.2.

3. From menu (screen) #1, use the ‘F9’ function key to select the SSPA and then ‘F7’(‘MUTEoff’).

7.9 STATUS DISPLAY SCREENS

The front panel display allows the user to view information on a number of critical operatingparameters. Use the [] and [] keys to move between the various displays and sub-menus. The following are typical status displays:

STATUS: ____ <ENTER> TO POWER PA

STATUS: ____ REFL. PWR <nn.n dBm

STATUS: ____ OUTPUT PWR nn.n dBm

STATUS: ____ PA SHROUD nn.n °C

STATUS: ____ PA HOTSPOT nn.n °C

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7.10 SSPA SHUTDOWN

The SSPA can shutdown due to a FAULT or as a result of a hardware or software command. A software shutdown is performed either at the front panel or by selecting the MUTE ON functionkey sending the appropriate code through the RS-422 Serial Interface. The SSPA can be restartedin a similar manner provided a hardware shutdown is not in effect. Powering off & on the PA canalso restart the SSPA. When the SSPA resumes operation, the attenuation level will return to its previous setting afterabout 2 minutes of stable operation. Note however that the SSPA will not restart if a FAULTcondition was detected.

7.11 MONITOR CALIBRATION CHARTS

1. To view the monitor calibration chart for the RF sample port on an SSPA, use the [] and []

keys on the front panel of the SSPA to access the Monitor Calibration sub-menu.

2. Press the [Enter] key once to view the output monitor calibration chart followed by the inputmonitor calibration chart. The display is capable of showing one line of the calibration chart ata time.

3. Use the [] and [] keys to scan the chart in order to obtain the coupling loss associated withspecific frequencies for each coupling port.

Example: If the calibration factor CALFACT for the output monitor at 6.150 GHz is - 40.2 dB andthe external power meter measurement shows Pm = +6.8 dBm, then the SSPA output power iscalculated as follows:

Pout = Pm + |C| = 6.8 dBm + 40.2 dB = 47 dBm.

STATUS: ____ MONITOR CALIBRATION

STATUS: ____ SUPPL CURR nn.n A

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7.12 ALARMS AND FAULTS The SSPA monitors all of the operating parameters and provides alarm and fault signals both onthe front panel and through the Discrete and Serial Interfaces. Two LED indicators on the frontpanel identify the ALARM and FAULT conditions respectively. Also during a fault condition, adisplay similar to the following will appear on the front panel: An ALARM condition occurs when a malfunction has been detected that may reduce theperformance of the SSPA or, if allowed to continue uncorrected, may lead to a FAULT condition(see TABLE 8). An ALARM condition will not cause an automatic amplifier shutdown. A FAULT condition occurs when a fault has been detected which has caused, or is likely to causean SSPA failure. A FAULT condition will automatically cause the amplifier to shutdown.

7.13 THERMAL ALARMS AND FAULTS The SSPA continually monitors its internal temperature and current consumption and includes anautomatic shutdown feature to prevent operation at excessive temperatures. An alarm will be triggered when the internal temperature of the SSPA exceeds 70°C. Theamplifier will continue to operate in this condition. When the SSPA hot spot temperature exceeds 80°C, or when the current consumption exceeds thethreshold value, a fault will be triggered and the amplifier will shutdown. The SSPA will restartautomatically when its internal temperature falls below 65°C. If a fault has been caused by anyother condition, then the status of the SSPA must be reset (i.e. to NO FAULT) and the source ofthe problem corrected before the unit can resume operation (see Section 7.14). A thermal alarm may be caused by any of the following conditions:

• high ambient temperature (the unit is designed to operate between 0°C and +50°C ambient)

• blockage at air intake or exhaust

• cooling fan failure

7.14 RESETTING THE SSPA After a FAULT condition has been detected by the SSPA and the source of the problem remedied,the fault must be cleared in order to resume operation. Also, unforeseen circumstances mightrequire resetting the default parameters.

HIST.FAULT: (message) <CLEAR> to clear

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A thermal alarm will be cleared automatically after the SSPA hot spot temperature falls below65°C. 7.14.1 USING THE SERIAL INTERFACE From menu (screen) #1, using the function key ‘F9’ to select the SSPA, then press‘F5’ to reset the unit. 7.14.2 FROM THE FRONT PANEL Press [Clear] at the front panel.

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8. MAINTENANCE AND TROUBLESHOOTING This Section describes the scheduled maintenance procedure for the SSPA.

CAUTION! Improper maintenance of the SSPA may void the warranty.

8.1 MECHANICAL PREVENTIVE MAINTENANCE Mechanical preventive maintenance consists of verifying the condition of all mechanical parts,with the AC power switched off. Perform the following inspection:

1. With the AC power disconnected or switched off, check that all connectors and plugs areseated properly in their mating connectors and have not been damaged. Replace damagedconnector plugs and reset any that are dislodged.

2. Inspect electrical wiring for signs of discoloured, broken or poor insulation. Repair or replaceas needed.

3. Inspects all waveguides for discoloration, cracks, loose connectors and improper sealing.Tighten or replace the waveguides as required.

4. Check for other defects such as breakage, deterioration, fungus, excess moisture and mountingintegrity.

8.2 CHECKING THE COOLING SYSTEM The cooling fans are located at the front and rear panels of the SSPA. Verify that the fans areoperating smoothly. Excessive noise may indicate a worn fan that must be replaced. Check on aweekly basis, for debris or dust in the fan intake and in all openings of the SSPA. Clean ifnecessary. Debris and/or dust may reduce the efficiency of the cooling system. Insufficientair-cooling will significantly impact SSPA longevity.

8.3 TROUBLESHOOTING

8.3.1 CONNECTION TO LINE VOLTAGE PRECAUTION Ensure that the correct voltage 110 or 220 VAC is used for the SSPA (check the switch on thefront panel before applying power). 8.3.2 NON-USER-SERVICEABLE MODULES The SSPA is serviceable at the modular level only. The repairs of the separate modules must bedone at the factory or at a regional repair centre.

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8.3.3 FUSES Only one fuse is used within the SSPA, which is located in the secondary power supply. Failure ofthis fuse indicates a major fault with the secondary power supply, which must then be repaired orreplaced. 8.3.4 CIRCUIT BREAKERS The front panel power switch acts as the main line circuit breaker. The breaker will trip only undera major power supply fault. 8.3.5 MAIN FAULT DIAGNOSIS Refer to the following table for the main fault diagnosis. Refer to schematic diagram attached atthe end of this manual while performing fault diagnostics.

Description of Problem Probable Cause Refer to Section Power is On butPower On LED is off.

No line voltage at the AC input. The secondary power supply has failed. Circuit breaker has failed

8.3.6.1 8.3.6.5 8.3.6.1

RF is On butRF On Led is off.

The RF output level is below set threshold. The attenuation setting is too high. The amplifier is muted.

8.3.9.1, 8.3.9.3 8.3.9.2 8.3.7.5, 8.3.7.6

Alarm LED is on. The RF output level is too low. The amplifier has overheated, but is not in shutdown

8.3.7.1-8.3.7.4

Fault LED is on. The amplifier has overheated & is in thermal shutdown. The Power Amplifier has failed. The Main Power Supply has failed. The Controller has failed

8.3.8 8.3.7.1 8.3.6.3, 8.3.6.4 8.3.6.6

HIGH TEMP is displayed. The amplifier internal temperature has exceeded 70° C. 8.3.8 LOW CURR is displayed. The Power Amplifier has failed. 8.3.7.1 HIGH CURR is displayed. The Power Amplifier has failed. 8.3.7.1 LOW VOLT meassage isdisplayed.

The Power Amplifier has failed. The Main Power Supply has failed. The Secondary Power Supply has failed.

8.3.7.1 8.3.6.4 8.3.6.5

HIGH VOLT is displayed. The Main Power Supply has failed. 8.3.6.4 HIGH REFL meassage isdisplayed.

The output waveguide is blocked or broken. The output waveguide is not properly connected.

8.3.10.2 8.3.10.1

The fan non-functional. The fan has failed. 8.3.6 An unrequested switch hasoccured.

The amplifier has overheated and is in thermal shutdown. The Power Amplifier has failed. The Main Power Supply has failed.

8.3.8 8.2 8.3.6.3

Mute LED is on but not from thefront panel.

The Discrete Interface RF Mute line is high or the U-link is notinstalled.

8.3.7.6

The unit cannot be controlledfrom the front panel.

The unit is set for Remote operation. 7.7.2

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8.3.6 POWER SYSTEM FAULT DIAGNOSIS

1. Verify ac power feed.

2. Verify power on led is on.

3. Verify fan operation and 48 V Varifan Power Supply operation. At A6-P1 of 48 V Varifan Power Supply:

A6-P1 pin 1 to A6-P1 pin 3 should be +12 V ± 0.5 V. At A6-P2 connector of 48 V Varifan Power Supply :

P2 pin 1 to P2 pin 2 the voltage should be between 11.5 VDC and 60 VDC, depending on the temperature of the hot spot of SSPA.

At A6-P3 connector of 48 V Varifan Power Supply : P3 pin 1 to P3 pin 2 the voltage should be between 11.5 VDC and 60 VDC, depending on the temperature of the hot spot of SSPA.

4. Verify voltage on main power supply: +12V ± 0.5 V. Refer to Section 8.4 for replacement.

5. Verify voltage on secondary power supply: A7-P2 pin 1 to A7-P2 pin 2 should be +15V ± 0.5 V. A7-P2 pin 3 to A7-P2 pin 2 should be -15V ± 0.5 V. A7-P2 pin 4 to A7-P2 pin 2 should be -9V ± 0.5 V. A7-P2 pin 5 to A7-P2 pin 6 should be +5V± 0.1 V.

6. Verify voltage at Monitor & Controller Board: A4-P11 pin 1 to A4-P11 pin 4 should be +5 V ± 0.25 V. A4-P10 pin 1 to A4-P10 pin 2 should be +15 V ± 0.5 V. A4-P10 pin 3 to A4-P10 pin 2 should be – 15 V ± 0.5 V.

Refer to Section 8.4 for replacement.

8.3.7 SSPA FAULT DIAGNOSIS

1. Verify RF input level.

2. Verify attenuation setting on front panel. Refer to Section 7.7.4.

3. Verify input power connection.

4. Verify output power reading on front panel.

5. Verify mute on/off.

6. Verify U-link between pins 8 and 15 on Discrete Interface connector (J3). 8.3.8 TEMPERATURE FAULT DIAGNOSIS Refer to Section 7.13 for alarm conditions.

1. Verify ambient temperature.

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2. Verify air exhaust and intake obstruction.

3. Verify fan operation. Refer to Section 8.4 for replacement. 8.3.9 LOW OUTPUT POWER FAULT DIAGNOSIS

1. Verify RF input level.

2. Verify attenuation setting on front panel.

3. Verify input power. 8.3.10 HIGH REFLECTED POWER FAULT DIAGNOSIS

1. Verify waveguide integrity and mounting at the amplifier output flange.

2. Verify waveguide leading to antenna. 8.3.11 REPLACEMENT OF FANS (EACH UNIT) The front panel fan may be replaced by opening the plate on the bottom of the unit and moving itdownwards; disconnect the electrical connection and replacing with a new fan. The rear panel fan may be accessed by removing the rear panel of the unit; disconnect the electricalconnection and replacing with a new fan.

8.4 MODULE REPLACEMENT

Module Part #

SSPA Module 200-115402-001

Main Power Supply (switch 110/220 VAC, with PFC) 505-104864-001

Secondary Power Supply 210-450256-001

150 A Current Sensor PCB 210-500249-001

48 V VARIFAN Power Supply 210-450794-011

Waveguide Arm Assembly 240-310404-001

Fan (2 items) 290-100600-001

Monitor and Control Assembly 210-250754-072

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9. APPENDIX - A: ELECTRICAL SPECIFICATIONS The SSPA specified herein is capable of meeting or exceeding the performance specificationslisted in the following table over frequency range, operating temperature and line voltage variation,unless otherwise specified. The SSPA will meet all RF performance specifications within thirtyminutes of application of prime power.

TABLE 12: ELECTRICAL SPECIFICATIONS

Frequency Range 5.850 - 6.425 GHz

Power Output (P1 dB) + 50 dBm, min

Gain at rated power 60 dB, min

Gain Flatness 2.0 dB p-p, max, over 575 MHz, at room temp.0.6 dB, max, over 40 MHz

Gain Slope 0.015 dB/MHz, max

Gain Variation ± 0.50 dB, max (0 °C to +25 °C)± 1.50 dB, max (0 °C to +50 °C)

Gain stability over 24 hours at constanttemperature and drive level

± 0.25 dB, max

Gain Adjustment 18 dB, min

Input Return Loss (Power on) 18 dB, min

Output Return Loss (Power off) 20 dB, min

Noise Figure @ maximum gain 8 dB, max

Spurious at rated power - 65 dBc, max

Harmonics at rated power - 90 dBc, max

AM/PM Conversion at rated power 2.5 °/dB, max

Third Order Intermodulation(two equal tones 5 MHz apart)

- 36 dBc, max @ 7 dB back-off (total power) - 26 dBc, max @ 3 dB back-off (total power)

Group Delay: Linear Parabolic

Ripple

0.02 nsec/MHz, max. 0.003 nsec/MHz2, max 1 nsec p-p, typical

Residual AM (F* = Frequency in kHz)

- 45 dBc- 20 ( 1+ log F* ) dBc- 80 dBc

(0 - 10 kHz)(10 kHz - 500 kHz )(500 kHz - 1 MHz )

Phase Noise Meets IESS-308/309

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10. APPENDIX - B: PACKING LIST

TABLE 13: PACKING LIST P/N 195-316450-041

Item Quantity Description Part Number

1. 1 Installation & Operating Manual PM 100-316450-140, Rev. 1

2. 1 125 Watt C-Band, SSPAARMA-C125-CTM 100-316450-140

3. 1 Serial Communications Software(on 3½ inch diskette) 380-100796-001 Rev. 1.4

4. 1 RS-422 TO RS-232 Converter PC Keyboard Powered 510-000485-001

5. 1 Backshell with Thumb Screws (for item 6) 631-000250-001

6. 1 Connector D-Sub 25 Sold Cup Plug(connector for port J3) 631-871380-001

7. 1 Connector 15 Crimp Snap-in Contacts Plug 631-205206-001

8. 1 Backshell for D-Sub 9 connector (for item 9) 631-925380-001

9. 1 Connector D-Sub 9 Sold Cup Plug(connector for port J2) 631-871380-003

10. 1 Waterproof gasket for CPR – 137G W/G flange 705-137000-001

11. 8 #10-32 x 1/2 inch Mach Screw Phil Pan Head18-8 Standard Sheets (SS) 802-103210-001

12. 10 #10-32 x 1/2 inch Hex Screw 802-103290-001

13. 10 #10 Lock Washers 803-100100-001

14. 1 Non-pivoting Slide with Mounting Kit 815-230124-001

15. 1 Wrap-around Bracket for open slot S-230 Slide 815-307200-001