sunair LPA-9600 User manual

TM-8105000504
SOLID STATE
KILOWATT LINEAR
POWER AMPLIFIER
LPA-9600
OPERATION AND MAINTENANCE
MANUAL
SUNAIR 3005 SW Third Avenue, Ft. Lauderdale, FL 33315-3312

SUNAIR LPA-9600
ii
REVISON DATE ECO DESCRIPTION
First Edition 10/1/90 Production changes
Second Edition 8/29/05 Customer changes
Copyright © 2000 by Sunair Electronics Inc.
All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the written prior written permission of Sunair Electronics Inc.
Printed in the United States.

SUNAIR LPA-9600
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STANDARD WARRANTY POLICY
GROUND AND MARINE PRODUCTS
Sunair Electronics warrants each equipment manufactured by it to be free from defects in
material or workmanship, under normal use for the lesser of one (1) year from the date of
installation or 15 months from date of shipment by Sunair.
Sunair will repair or replace, at its option, any defective equipment or component of the
equipment returned to it at its factory, transportation prepaid, within such warranty period.
No reimbursement will be made for non-factory repair charges.
This warranty is void if equipment is modified or repaired without authorization, subject to
misuse, abuse, accident, water damage or other neglect, or has its serial number defaced
or removed.
THIS WARRANTY IS ESPECIALLY IN LIEU OF ANY AND ALL OTHER WARRANTIES
EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANT
ABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The obligation and responsibility
of Sunair shall be limited to that expressly provided herein and Sunair shall not be liable for
consequential or other damage or expense whatsoever therefore or by any reason thereof.
Sunair reserves the right to make changes in design or additions to or improvements in its
equipment without obligation to install such additions or improvements in equipment
theretofore manufactured.
SUNAIR ELECTRONICS, INC.

SUNAIR LPA-9600
iv
SUNAIR
LPA-9600
SOLID STATE KILOWATT
LINEAR POWER AMPLIFIER
OPERATION
AND
MAINTENANCE MANUAL
SECOND EDITION AUGUST 29, 2005

SUNAIR LPA-9600
v
PRODUCT SERVICE:
In case of difficulty please contact the
Sunair Product Service Department,
between the hours of 8:00 AM and 5:00
PM Eastern Time or write to:
Product Service Dept.
Sunair Electronics, Inc.
3005 S.W. Third Avenue
Ft. Lauderdale, FL 33315-3389
U.S.A.
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
TRAINING:
Sunair offers training programs of varying lengths covering operation,
service, and maintenance of all Sunair manufactured equipment. For
details please contact the Product Service Department

SUNAIR LPA-9600
vi
Conventions Used in this Manual
¢Button names, names of screens and key names are printed in bold.
¢Notes: provide information to help you accomplish tasks efficiently or to avoid problems.
¢Mouse clicks:
Unless otherwise specified, the left mouse button is used for all mouse actions.
Single-click on an item to activate buttons.
Double-click on most other items to activate function.
¢Dialog boxes (combo boxes, list box, text box, drop-down menus)
A combo box is a control, similar to a list box and text box combined in which you enter a value or
select an item from a list.
A list box is a control that provides a list of items to choose from.
A text box is a control that allows you to enter or view text in a form. Usually, text boxes hold a single
line of text
Some options require that you enter additional information. You either type additional information in a
text box (field), select from a drop-down list accessed by up or down arrows, or select (click on) a
button.
¢Directs you to additional references about a subject.

SUNAIR LPA-9600
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TABLE of STANDARD ABBREVIATIONS
ADDR Address
AGC Automatic Gain Control
ALC Automatic Level Control
AM Amplitude Modulation
AME Amplitude Modulation Equivalent
AMP/AMPL Amplifier
ARQ Automatic Request
AUD Audio
AUTO Automatic
AUX Auxiliary
BAUD A variable unit of data transmission speed
(bits per second)
BELL U.S. Telephone standards
BFO Beat Frequency Oscillator
BITE Built In Test Equipment
BRD Board
CH /CHAN /CHL/CHN Channel
CLR Clear
CMOS Complementary Metal Oxide Semiconductor
CPLR Coupler
CPU Computer
CW Carrier Wave
dB Decibel
dBm Decibels referred to 1 milliwatt across
600 ohms
DSBSC Double Sideband Suppressed Carrier
DSP Display
DUART Dual Asynchronous Receive/Transmit
EEPROM Electrically Erasable and Programmable
Read Only Memory
EPROM Electrically Programmable Read Only Memory
EMI Electromagnetic Radiation Interference
ENTR Enter
FAX Facsimile
FEC Forward Error Correction
FREQ Frequency
FSK Frequency Shift Keying
FWD Forward
GRP Group
HF High Frequency
Hz Hertz
IC Integrated Circuit
IF Intermediate Frequency
I/O Input/Output
IONCAP Ionospheric Communications Analysis and
Prediction
ISB Independent Sideband
kHz Kilohertz
kW Kilowatt
LCD Liquid Crystal Display
LCL Local
LED Light Emitting Diode
LK Link
LO Local Oscillator
LP/LPX Lincompex
LRU Lowest Repairable Unit
LSB Lower Sideband
LT Light
LVL Level
MAN Manual
M CH Manual Channel
MED Medium
MHz Megahertz
MIC Microphone
MIL-STD Military Standard
MNL Manual
ms Millisecond
MTTR Mean Time To Repair
MTR Meter
NAR Narrow
O.D. Olive Drab
PA Power Amplifier
PC Printed Circuit
PEP Peak Envelope Power
PLL Phase-Locked Loop
P/N Part Number
PNL Panel
POSTSL Post-Selector
PRESEL Pre-Selector
PTT Push-To-Talk
PWR Power
RCV/RX Receive
REFL Reflected
REV Revision
RF Radio Frequency
RFI Radio Frequency Interference
RFL Reflected
RMT Remote
RS232 Computer control, hardwired up to 50 feet
maximum
RS422 Computer control, hardwired up to 4000 feet
maximum
RS485 Computer control, hardwired for multiple
users
RTTY Radio Teletype
SEL Select
SLO Slow
S MTR Signal Strength Meter
SPKR Speaker
SPLX Simplex
SRAM Static Random Access Memory
SSB Single Sideband
TCXO Temperature Controlled Crystal Oscillator
TGC Transmit Gain Control
THD Total Harmonic Distortion
TTL Transistor Transistor Logic
TX/XMT Transmit
USB Upper Sideband
UTC Universal Time
VCO Voltage Controlled Oscillator
VHF Very High Frequency
VRMS Volts Root Mean Square
VSWR Voltage Standing Wave Ratio
WWatt
WPM Words Per Minute
* Asterisk indicates function selected

SUNAIR LPA-9600
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SAFETY INFORMATION
The following safety information is not necessarily related to a specific procedure in this
particular document. However, the information should be reviewed, understood and applied
in all phases of operation and maintenance before operating the equipment described here.
Standard practice uses hazard notices that are ranked in order of severity and designed to
prevent damage, injury, or death.
•A caution prevents mistakes that could result in injury or equipment damage. For
example, Electrostatic Discharge Sensitive Devices (ESDS) must be handled
with certain precautions to minimize the effect of static build-up.
•A warning alerts users to potential hazards to life or limb. For example, to avoid
casualties, always remove power and discharge circuits to ground before
touching any circuit components.
•A danger identifies an immediate hazard to life or limb. For example, dangerous
voltages exist in certain equipment. Before removing any cover, disconnect
primary power.
Some personnel in the work place should be trained in rendering first aid. In those places
where high voltages are present, they should be familiar with methods of resuscitation.
Keep Away from Live Circuits
Operating personnel must observe at all times all safety regulations. Do not replace
components inside the equipment with the power supply turned on. Under certain
conditions, dangerous potentials may exist when the power control is in the off position due
to circuit design or charges retained by capacitors. Remove watches and rings before
performing any maintenance procedures.
Do not service or adjust alone
Under no circumstances should any person reach into or enter the enclosure to service or
adjust the equipment except in the presence of someone who is capable of rendering aid.
Resuscitation
Personnel working with or near high voltage should be familiar with methods of
resuscitation.

SUNAIR LPA-9600
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TABLE of CONTENTS
Section Page
IGENERAL
1.1 PURPOSE OF MANUAL 1-1
1.1.1 PURPOSE OF EQUIPMENT 1-1
1.2 GENERAL DESCRIPTION 1-1
1.2.1 PHYSICAL DESCRIPTION 1-1
1.2.2 ELECTRICAL DESCRIPTION 1-1
1.2.2.1 EXPECTED EMP PERFORMANCE 1-2
1.3 SPECIFICATIONS 1-2
1.4 EQUIPMENT SUPPLIED 1-6
1.5 EQUIPMENT REQUIRED, NOT SUPPLIED 1-6
1.6 OPTIONAL EQUIPMENT 1-7
II INSTALLATION
2.1 UNPACKING AND INSPECTION OF EQUIPMENT 2-1
2.2 RETURN OF EQUIPMENT TO FACTORY 2-1
2.3 INSTALLATION PROCEDURE 2-2
2.3.1 STATION LAYOUT 2-2
2.4 CONFIGURATIONS 2-2
2.5 ANTENNAS AND GROUND SYSTEMS 2-2
2.5.1 RANDOM LENGTH NONRESONANT ANTENNAS 2-2
2.5.2 BROADBAND 50 OHM ANTENNAS 2-3
2.6 EXTERNAL CONNECTIONS 2-7
2.6.1 PRIMARY POWER CONNECTIONS 2-7
2.6.2 TRANSCEIVER CONNECTIONS 2-7
2.6.3 RF OUTPUT CONNECTIONS 2-7
2.6.4 ANTENNA COUPLER CONNECTIONS 2-9
2.6.5 STATION RF GROUND SYSTEM CONNECTIONS 2-9
2.7 PRELIMINARY CHECKS AND ADJUSTMENTS 2-9
2.8 RACK MOUNTING KIT OPTION 2-9
III OPERATION
3.1 GENERAL 3-1
3.2 FUNCTION AND LOCATION OF CONTROLS AND
INDICATORS 3-1
3.3 OPERATING THE LPA-9600 3-1
3.3.1 OPERATION WITH 9000 SERIES EXCITER/
TRANSCEIVER 3-1

SUNAIR LPA-9600
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TABLE of CONTENTS (Cont.)
Section Page
IV THEORY OF OPERATION
4.1 GENERAL 4-1
4.2 CONTROL PANEL MODULE A2 4-1
4.3 COMPUTER ASSEMBLY A3 4-2
4.3.1 PC ASSY COMPUTER MOTHER BOARD A3A1 4-2
4.3.2 PERIPHERAL BOARD A3A2 4-2
4.3.2.1 GENERAL 4-2
4.3.2.2 TEMPERATURE SENSE COMPARATORS U1,U2 4-2
4.3.2.3 OVERTEMPERATURE BUFFER U3 4-3
4.3.2.4 GAIN FAULT COMPARATORS U12 4-3
4.3.2.5 GAIN FAULT BUFFER U7 4-3
4.3.2.6 VC MONITOR COMPARATORS U11 4-3
4.3.2.7 VOLTAGE MONITOR COMPARATORS U13 4-3
4.3.2.8 VC MONITOR/VOLTAGE MONITOR BUFFER U19 4-3
4.3.2.9 COLLECTOR VOLTAGE METER CONDITIONING
CIRCUIT U14 4-4
4.3.2.10 COLLECTOR CURRENT METER CONDITIONING
CIRCUIT U16 4-4
4.3.2.11 CHANNEL MULTIPLEXER U17 4-4
4.3.2.12 MULTIPLEXER SWITCH SELECTOR LATCH U18 4-4
4.3.2.13 OVERCURRENT DETECTORS U15 4-4
4.3.2.14 LCD ENABLE INVERTER U6E 4-4
4.3.2.15 VSWR FAULT DETECTOR U9B 4-5
4.3.2.16 FILTER FAULT DETECTOR U9C, U20A 4-5
4.2.3.17 RF PRESENT DETECTOR Q4 4-5
4.3.2.18 FORWARD POWER METER CONDITIONING
CIRCUIT U10B, U23A, AND Q13 4-5
4.3.2.19 REFLECTED POWER METER CONDITIONING
CIRCUIT U10A, U23B AND Q14 4-5
4.3.2.20 REFLECTED FAULT DETECTOR U9D 4-5
4.3.2.21 ALC/ACC CONTROL CIRCUIT U10C, U10D,
U20A, B AND C, Q3 AND Q12 4-6
4.3.2.22 DC TO DC CONVERTER U21 4-6
4.3.2.23 DC TO AC CONVERTER U22 4-6
4.3.2.24 COUPLER CONTROL CIRCUITS 4-6
4.3.2.24.1 GENERAL 4-6
4.3.2.24.2 COUPLER INPUT DETECTORS
U6A-D, U9A 4-7
4.3.2.24.3 COUPLER INTERFACE BUFFER U8 4-7
4.3.2.24.4 OUTPUT LATCH U4 4-7
4.3.2.24.5 LAMP DRIVER/RELAY DRIVER
CIRCUIT U5G, Q1, Q5, Q6 4-7
4.3.2.25 BITE BITS 4-7