Sunair LPA-9500 Service guide

TM-8116000501

SOLID

500

POWER AMPLIFIER

LPA-9500

OPERATION

STATE

WATT

and

LINEAR

MAINTENANCE

"II>

SUNAIR

MANUAL

ELECTRONICS LLC 3400 SW

60~

Ave. Ocala, FL34474 U.S.A.

WARRANTY POLICY

GROUND AND MARINE PRODUCTS

Sunair Electronics warrants,equipment manufactured by it to be free from defects in material or workmanship, under normal use for the lesser of one 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. 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 EXPRESSED OR

FITNESS FOR A PARTICULAR PURPOSE. The obligation and responsibility

shall

be

limited to that expressly provided herein and Sunair shall not be liable for consequential

OR

IS

ESPECIALLY

IMPLlED,INCLUDINGANY IMPLIED WARRANTY OF MERCHANTABILITY

IN

LIEU OF ANY AND ALL OTHER WARRANTIES

(1)

year from the date of installation or

(,

No

of

Sunair

or other damage or expense whatsoever therefore or by any reason thereof.

in

Sunair reseNes the right to make changes equipmentwithoutobligation to install such additions or improvements man ufactu red.

design or additions to or improvements

in

equipmenttheretofore

'1SUNAIR ELECTRONICS, INC.

in

its

In

case

PRODUCT

of

difficulty please

SERVICE:

contact

the

Sunair Product Service

Department

or write

to:

Telephone:

FAX:

Email:

between

the

hours

Product

Sunair

3400

(352)

Techsupport@sunairelectronics.com

of

8:00

Service

Electronics,

SW

Ocala,

873-4000

854-6238

FJ.

U.S.A.

AM

60th

34474

and

Dept.

LLC

Ave.

5:00

PM

Eastern

Time,

Sunair offers training

service, and maintenance

details please Contact

programs

Product

TRAINING:

of

vatying

of

aU

Sunair

Services

manufactured equipment. For

Department.

lengths covering opertation,

LPA-9500

SOLID

LINEAR

STATE

500

WATT

POWER AMPLIFIER

OPERATION

AND

MAINTENANCE MANUAL

FIRST EDITION SEPTEMBER,1995

ISliNAIRLPA-9500 I

Section

II

TABLE

GENERAL INFORMATION

.1

1 1 1 1

1.5

1.6 Optional Equipment

INSTALLATION

2.1

2.2 Return of Equipment to Factory

2.3

2.4

2.5

2.6 External Connections

2.7

2.8 Rack Mounting

Purpose of

.2

General Description

.3

Specifications

.4

Equipment Supplied Equipment Required,

Unpacking Installation Procedure

Configurations

Antennas Preliminary Checks

Manual

and

of

Inspection of Equipment

Ground

Kit

Option

CONTENTS

Not

Supplied

Systems

and

Adjustments

Page

1-1 1-1 1-2 1-6 1-6 1-7

2-1 2-1 2-2 2-2 2-2

2-7 2-9 2-9

III

IV THEORY OF OPERATION

OPERATION

3.1

3.2

3.3

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

General Function Operating the LPA-9500

General Control Computer Assembly RF/PS

Filter Output Power Combiner A6 4-16 Input Power Splitter Assembly Front Rear

Auxiliary Power Supply A 1 0 4-17 Dual

and

Panel

Module

Panel

Dummy

Connector Assembly A9 4-17

Location of Controls

Module

A4

A5

A8

Load

A11A1

A2

A3

A9

and

Indicators

3-1 3-1 3-1

4-1 4-1 4-2

4-13 4-15

4-17 4-17

4-17

I

SUNAIRLPA-9500

I

TABLE

Section

V MAINTENANCE

5.1

5.2

5.3

5.4

5.5

5.6

5.7

Preventive

Corrective Alignment Fault Fault Disassembly Schematics

of

AND

Maintenance

Procedure

Messages

Isolation

Procedures

Instructions

and

CONTENTS (Cant. ..)

REPAIR

Parts

List

Page

5-1

5-1 5-2 5-5 5-5 5-7

5-25~

Ii

I

SUNAJR

LPA·9500 I

Section

II

LISTING

Description

of

FIGURES

Page

GENERAL INFORMATlON

1.1

1.2 LPA·9500 (Front Panel and Rear Panel)

Outline and Mounting Dimensions, LPA·9500

1·4 1-5

INSTALLATION'

2.1

2.2 LPA-9500w/CU-91 00, 35

2.3 LPA-9500w/CU-91 00, Non-ResonantAntenna

2.4

2.5 Power Cable Assembly P /N 8066002297

2.6 Transceiver to LPA-9500 Control Cable

2.7 Voltage Customizing -Circuit Breaker/Auxiliary

2.8 Voltage Customizing - RF/PS Module A4

2.9 Rack Mount Slide Details 2-12

2.10.1 Shockmount Equipment Rack with Outline Dimensions

2.10.2 Shockmount Equipment Rack with Outline Dimensions

LPA-9500 with Broadband Antenna 2-3

FT

KW

Longwire Antenna Kit

Power Supply

and Details (Sheet 1/2)

and Details (Sheet 2/2) 2-14

Antenna (RoofTop Installation)

(4

each) 2-11

2·4 2-5 2-6 2-7 2-8

2-10

2-13

III

IV

OPERATION

3.1

THEORY

4.1

4.2 Peripheral Board A3A2 Block Diagram

4.3 Microprocessor Board A3A3 Block Diagram

4.4 Power Amplifier Assembly A4A3 Block Diagram 4-22

LPA-9500 Controls and Indicators

OF

OPERATION

LPA-9500 Overall Block Diagram 4-19

(For use with CU-91 00)

V MAINTENANCE AND

5.1

Major Assembly Locations (eight sheets) 5-9

3-2

4-20 4-21

REPAIR

iii

ISUNAIRLPA·9500 I

LISTING of FIGURES (Cont. ..)

Section Description

V MAINTENANCE AND REPAIR (Cont...)

Page

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

5.10

5.11

5.12

5.13

5.14

5.15

5.16

5.17

LPA·9500 Test Setup Audio Injection Test Cable Chassis Wiring Diagram Control Panel Module Computer Motherboard A3A 1 Peripheral Microprocessor Module Control +48

VDC Switching Power Supply A4A2 Power Amplifier A4A3 Filter Module Combiner Module Splitter Module A 7 Rear

Panel Auxiliary Power Supply A Dual

Dummy

Board

A5

Connector Module

Load

LISTING

A2

(two

A3A2 (four sheets)

A3A3 (four sheets)

A4A 1

A6

10

A11A1

of

TABLES

A9

sheets)

5·24 5-24 5-28 5-30 5-32 5-36

5-42 5-46 5-49 5-51 5-53 5-64 5-65 5-67 5-69 5-70

Section

III

V MAINTENANCE AND REPAIR

OPERATION

3.1

5.1

5.2

5.3 Peripheral

5.4 LPA-9500 Table of Assemblies

Controls

Fault Messages RF/PS

Module

Description

and

Indicators Front

A4

Fault Isolation Procedures

Board

A3A3 Fault Isolation Procedures

Panel

Page

3-3

5-17 5-21 5-23 5-25

tv

I

SUNAIR

LPA-9500

SECTION

INSTALLATION

2.1

UNpACKING AND INSPECTION OF EQUIPMENT

The

LPA-9500 packing shipping retain

all

Do

not

acceptashipmentwhen

is

made. Ifthere isa papers accepted, shipment. A full

Include

before

the

500 material damage

packing

signing

notify

following:

Watt

Linear

Solid

State

Power

Amplifier should must be'filed material.

the report

be

removed

promptly

there

shortage ofitemsorevidence ofdamage

the

receipt

carrier immediately

should

also

are

from

be

carefully

with

visible the forwarded

and

the

transportation

signs ofdamagetothe

carrier. Ifconcealed

in

writing

a) b) c) d)

and

to

Sunair.

Order

Number

Model

and

Name

of Transportation Agency

Applicable

contents

await his

Serial

Dates.

II

is

packed

company.

is

noted.

damage

inspection

Number

in a box

inspected

If it isfound

shipping

insist

on anotation

is

discovered after the shipment

using

double

for physical

necessary

container

to that effect onthe

before

making

wall

construction.

damage.

until acomplete

any

Any

to

file

such aclaim,

disposition

The

claims for

inspection

shipping

has

been

of

the

When

this

information

is

received

by

Sunair,

arrangements

2.2 RETURN OF EQUIPMENT TO FACTORY

The

shipping container equipmentto obtained

If

the

original material connectors equipment PROTECTION.

Shipment

Plainly

containerforthe

and

its

Sunair

from

our

shipping

where

and

to

protect

should

mark

with

LPA-9500

associated

for

Product

carton isnotavailable,

necessary.

other

protruSions

against

they

may

be

AIR

indelible

packing

warranty

Services

Very

denting.

allow

PARCEL

ink

all

has

been

materials

or

non-warranty

Department,

be

suretocarefulIypack

special

the

mailing oOcUirlents

attention

from

the

equipment.

DO

NOT

unitto shift

POST

while

consigned

SUNAIR ELECTRONICS, LLC 3400 SW OCALA, FL. 34474

PHONE: 352-873-4000 FAX: 352-854-6238

carefully

should

repair,

Telephone:

should

USE

being to:

TH

60

as

be

an

Rigid

DUNNAGE

AVE.

follows:

will

be

made

for

repair

designed

used

authorization number is

be

shipped.

to

protectthe

to

reship

305-525-1505,

each

unit

given

to

providing

cardboard

should

(STYROFOAM

and,

therefore,

the

FACSIMILE:

separately.

or

replacement.

equipment

unit.

When

required.

enough

be

placed

PEANUTS)

become

during

necessary

This

(305)

using

suitable

packing

at

damaged.

shipment.

number

765-1322.

cushioning

material

the

corners

FOR

The

to

return

can

be

around

of

the

PACKING

2-1

1.1

PURPOSE OF MANUAL

This

manual operating configurations

with

Sun

describes the

instructions

unless

air Transceivers

otherwise

LPA-9S00

and

maintenance

and

Exciters.

stated

SECTION I

GENERAL INFORMATION

SOOW

Linear

procedures.

in

the

text or illustrations.

Solid

State

Power

Information

The

LPA-9S00

Amplifier

in

this

is

ISUNAIRLPA-9500 I

and

includes installation details,

manual

designed specificallyfor

applies to

all

equipment

operation

11.1.1

The envelope frequency networks.

PURPOSE

purpose

of the

power

rangeof1.6

OF

LPA-9S00

(PEP)

or average

to

30

EQUIPMENT 1

is

to

amplify

MHz.

It is

1.2 GENERAL PESCRIPTION

11.2.1

Outline to

The weighing bottom cooling

11.2.2

PHYSICAL

and

mounting

the

unit

are

made

LPA-9500

only

71

covers

provide

air throughout the amplifier.

DESCRIPTION

dimenSions

on

is

shown Ibs.,

than

complete

ELECTRICAL

for the

the rear

in

panel.

Figure the traditional amplifiers

1.2.

access

DESCRIPTION

the

low level

power.

intended

The

fora

LPA-9500

100%

1

LPA-9500

The amplifier is a single

for

servicing.

are

and

One

given

1

RF

output of a separate exciter

is

microprocessor controlled

unattended

in

power supplies contained

blower

duty cycle for HFcommunications

Figure

1.1.

enclosed

is

provided

Control,

unit

and

behind the front

power

is

smaller

in

separate

to

produce

and

operates

RF

and

much

units.

panel

500 W peak

in

the

systems

connections

lighter,

Top

and

filter

to

force

The

LPA-9500 poweramplification load.

The amplifier/power supply conservative

The

LPA-9500

up

to

+65OC

to

maintain

The

unit

keyboard

(LCD)

indicates

Sophisticated software

500W

and

unit operates

SOO

watts of

operates

while operating

safe

operating

is

capable

are

control.

of providing a

status

indications of

the specific function

diagnostics, status monitoring

In

the

Solid

State Linear

microprocessor technology

in

the frequency

modules,

peak

envelope or continuous

from

115 or230

at a 100%

temperature.

event of malfunction

Power

range

each

capable of producing over

VAC

(SO

duty

cycle.

bypass

power,

selected.

mode

individual amplifier voltages

the

Amplifier

of 1.6

to

(12S

and

LPA-9500

is

a new generation amplifier,

to

produce

to

RF

60

Hz). Itis

Forced

watts)

routine housekeeping

over

30

MHz

output

extremely

air cooling. under microprocessor

that

automatically selects the next lower

500

watts of reliable HFpower

and

at a rated output of

300

watts,

power.

rugged

is

locally keyboard

and

currents.

are

combining

1.S

in

combination

and

withstands temperatures

selected.

The

all

under microprocessor

solid state

into

to 1

VSWR.

deliver a very

control,

Also

liquid crystal display

safe

aSO

ohm Two

is utilized

available

operating

RF

by

and

1-1

ISUNAIRLPA·9500 I

level. flashes a is

caused

keyboard.

by

waming

more

light

than

one failure, the operator

1.3 SPECIFICATIONS

RF

OUTPUT

RF

INPUT

•

FREQUENCY DUTY TYPE OFEMISSION:

WEIGHT: DIMENSIONS:

POWER:

CYCLE:

711bs.

500W ± 1

75W

RANGE:

Continuous.

AM,

amplifier.

(32

kg).

CM: Inches:

locally,

maximum.

1.6 to

SSB.

and

dB

PEP

30.0

MHz.

CW

45.42W

17.88W X 190 X

displays the

or

and

average.

or

any

other

X 48.260 X

cause

technician

type

within

40.01

H

15.75H

of the malfunction

is

able to obtain detailed diagnostics

the bandwidth

on

the

LCD.

and

power capabilities of the

If the malfunction

by

use

of the

INPUTIMPEDANCE:

OUTPUTIMPEDANCE: LOAD

INPUT INPUT INTERMODULATION

HARMONIC ATTENUA SPURIOUS: BAND TUNING

TEMPERATURE

VSWR:

VOLTAGE: POWER:

CHANGE

TIME:

SO

Rated

dB

power at

115/230

2.5

kVA

DISTORTION:

below

TIME:

o

on

RANGE:

50

2.0:1

50

Ohm

Vae ± 15%,

Typical.

TlON:

PEP.

10

ms

seconds

coupler

Operating

Ohm

nominal.

VSWR

unbalanced.

1.5

to

73

dB

maximum.

without coupler.

type.

maximum.

1.0,

reduced

single

36

dB

or better

power

output.

or better below carrier at

-30°C

to

+65°C,

power

phase,

below

With

up

to 2 to

1,

50

to

60

Hz.

PEP

with

rated

power output into a

an

Automatic Antenna

Storage:

-40°C

protected above 2 to

a standard two tone

50

to

+S5°C.

Coupler,

tuning

1.

test

Ohm

time

signal

load.

dependent

at

rated

HUMIDITY:

ALTITUDE: 0-10.000feet.

VlBRA71ON:MIL-STO-S10C.Method514.2,EquipmentCategoryf,Table514.2-Vlforwheeledvehicles,

MIL-STO-S1

OC,

Method

507.1.

Proe.1I1.

Figure

514.2-6,

Curve

V.

SUNAIR

LPA-9500

MTBF:

MTTR:

DIAGNOSTICS:

6,000

15

minutes.

hours

(calculated).

Microprocessor

controlled

with

English

Language

Readout.

1-3

I

SUNAIRLPA·95QO

I

_____

=_

jII---

--

11t"-·

--

Ii!

---

"'---

22t"------·

2O.!..

..

---

-

4

1-4

Figure

1.1

Outline

and

. Dimensions,

Mounting

REAR

VIEW

. LPA-9500.

I

SUNAIR

Front Panel

LPA·9500

Rear Panel

Figure 1.2 LPA-9500 (Front Panel and Rear Panel).

1-5

1.4 EQUIPMENT SUPPUEP

SUNAIR PART NUMBER

LPA-9500,

Power Cable Assembly Operation Connector

Consisting

500W

Linear Solid State Power Amplifier

(10

feet)

and

Maintenance

Manual

Kit

of:

2

EA

Bushing,

EA

Bushing, Telescoping, .6210

2

E!ABushing,

2

EA

Connector,

1

EA

Connector,

1

EA

Connector,

1 1

EA

Connector,

2

EA

Clamp,

1 EAConnector,

Telescoping, .5610 Telescoping, .7510

RF,

UHF,

RF.

N UG-536B/U RF, N UG-21 Power,

Cable.

Connector

Power,

PL·259

37

24

B/U

Round

Male

1.5 EQUIPMENT REQUIREp. NOT SUPPUED

Extemal

AC

Power

Connector

8116001256

8066002297

8116000501

8066000294

0700550054 0700550062 0700550071 0742190005 0747020001 0754140008 0754320006 0754570002 1008390011

User Supplied Transceiver Coaxial Coaxial Antenna

Transceiver

(specify length)

or

Cable,

System,

to

without connectors

to

Cable Mating

Exciter

RG-8AJU

RG-58AJU

50

Ohm

Nominal

LPA-9500 Control

LPA-9500 Control Cable assembly

conSisting

0579240002,9000 Series

Connector

of:

and

hardware.

Cable

Consult Sunair

0588640000

0588130001 User Supplied

0579240002

8076004098

ISUNAIR LPA-9500 I

1.6 OPTIONAL EQUIPMENT

Running Service Kit

(Contains Depot Spares Field

CU-91

LPA-9500to Rack

Wired

Shockmount Kit. Equipment

Spares

Module Kit

00

High

Mounting Kit

Rack

PC

CU-91

Kit

Assy

Kit

Speed

Card

Extenders)

Digital Antenna Coupler

00 Control Cable

Rack

SUNAIR PART NUMBER

8066900198

8116900099 8116905791

8104000055 81

04000098

Gray

Green

8092500096

8066004257 8066004290

6032091

6032091091 6032090892

058

Gray Green

35

Foot

Fiberglass Antenna

KW

Longwire Antenna Kit

0715850008 1003090010

1-7

»

I

SUNAIRLPA-9500

I

ITHIS PAGE INTENTIONALLY LEFT BLANK. I

1-8

~£

"B#iMark

ALL

SIDES

of

package:

U.S.

Goods Returned For Repair

Value For Customs -

$100.00

FRAGILE-ELECTRONIC

I

NOTE: I Before

marked

shipping,

properly

2.3 INSTALLATION PROCEDURE

12.3.1

The must

Reference pounds. the unit CW transceiver mounted

STATION

LPA-9500

be

maintained

to

Allow

and

any

modes

of

should

above

LAYOUT

must

be

installed

between

Figure

1.1

will

provide

free

circulation

wall

or

partition.

communications.

be

located

the

LPA-9500 ifblowers

1

in astructure

-3OCC

(-22°F)

the

of air

around

The

companion

For

FSK

on

an

adjacent table

necessary

2.4 CONFIGURATIONS

Figures

2.1

through

2.3

are

illustrations ofvarious

and

the

or

other

are

provided

carefully

and

is

which

provides

+65OC

outline

cabinet,

transceiver

modes

and

LPA-9500

EQUIPMENT!

inspect

securely

(144°F).

in

wrapped.

protection

dimensions

and

at least six

may

requiring a full

have a blower

the

top ofthe

configurations.

the

be

placed

package

from

the

required

inches

on

kilowatt of

kit.

The

rack.

to

be

sure

it

is

weather.

for installation. Floor

air

top of

transceiver

Ambienttemperature

space

between

the

LPA-9500

average

power

may

load

the

for

output,

also

is

back

voice

be

rack

71

of

or

the

2.5 ANTENNAS AND GROUNp SYSTEMS

The

LPA-9500

Figures

2.1

12.5.1

The

antenna must between 35

foot

for

grounding

Another feet. an

illustration

the

antenna's

2-2

is

a)

Nonresonant

b)

Broadband

thru

2.3

RANDOM

impedanceofnonresonant

be

used

to

practical

whip

is

details.

nonresonant

Both

ofthese

of a length.

designed

illustrate configurations

match

greatly

to

antennas

LENGTH

the

height

and

influenced

antenna

antennas

75

foot

longwire

work

into two types of

antennas

NONRESONANT

antenna

good

by

is

the

require

where

an

where

the

where

antennas

to

the

LPA-9500.

electrical

its

longwire.

installation.

ground

an

antenna

performance

antenna:

antenna coupler

LPA-9500

each

is

system.

The

coupler

Note

is

connected

of these

ANTENNAS

dependent

Thirty-five

at

low

For

Base

two

most

popular

to

match

that

the

feed

is

used

two

types

on

the

foot

whip

operating

Station

length

the

line

from

and

directly to the

of

antennas

1

operating

antenna

frequency.

antennas

frequencies.

rooftop

installation

longwire

to the

the

antenna

antenna.

are

used.

An

offer a

antennas

good

The

performance ofthe

refer

LPA-9500.

to

the

antenna

compromise to

Figure

are

75

Figure

coupler

and

150

2.4

is

part

2.2

is

of

SUNAIR LPA-9500

12.5.2

These limited of

antenna

is

not

example

BROADBAND

are

generally

to

high

perfonnance

has

approximately

required.

of a

Some

system

~---

50

OHM

complex,

base

50

common

ANTENNAS

expensive

station

ohm

output

types of

broadband

antennas

installations

configuration utilizing a

100

FT

MAX.----~

CONTROL CABLE ASSY COAX

37

CONO.

PfN

8076004098

:SP£CIFY

LENGTH'

1

requiring a large

which

impedance

antenna

broadband

must

over

the

are

the

antenna.

area

for installation. Their use

operate at diverse frequencies.

rated

band offrequencies,

Discone

and

Log-Periodic.

SEE

CABLE

AG8IU

200

FT.

NOTE

ASSY

MAX.

an

antenna coupler

~ANTENNA

I

As

Figure

is

usually

this class

2.1

is

an

9000

SERIES

TRANSCEIVER

GND

NOTES:

I.

BROADBANO

WITH LESS THAN

A.DISCONE B.

LOG

J6~*(~~~~

J4

PERIODIC

__

1-

____________

(P4

~

.,.

~COAX

ANTENNAS COMPATIBLE

2:

I VSWR.

CABLE

RG58

AlU

PtN

8043051305

(SPECIFY PIN

804305119.

~P5~"~J5

P2,

ASSV

LENGTH'

(6 FT.l

POWER

50

OHMS

AMPLIFIER

J2

AC

LPA-9500

soow

LINEAR

JIH~P:..:I

__

POWER

PfN

8066002297

CABLE

Pt

___

ASSY

....J

(10 FT.)

Figure

2.1

LPA-9500

With

Broadband

Antenna.

2-3

~a~S~_i~?~a

SUNAIR

L

LPA~9500

______

I

~.

____________________________________

___

I

:::

III

j

2-4

Figure 2.2

I

:::

I

t

:1

Cl

LPA-9500

;

W/CU-91

e

i!

it

:II

I~

!

~

~I

'"'

I

Ie

;:

1111

1-

I; _

i~!;

~i

J!

00,

35 FtAntenna (RoofTop Installation).

i!!1

~

wi

.

i!111

I~I:!

!

1111

i

en

c

~

::u

~

i

M1BIIA

,

...

t:

i

• I

MX.

II£CIlfIfJIJED

fT.

FT.

150

101

\1lTMiE

IlDiII

I-

u

-

..

C»tIOIt

ASSY

8&911&1I!I!I

lElliiTHI

PII

CMlE

ISP£[]FY

I681U

COAX

1f.RIUIW.

~~W:al

IIII10IIA

...

~

I

EI

.,

CIIftD

.....

=

)>1.

ISSY

I'f

C_

_

I

lElliiTH

819i!SOOll!li 1M

SPEt:lFY

I

P

~

FTI 110

ASSY

CABlE

8D660OCZ97

PIlIiER

MX.

fT.

258

I.

ASSY

CMlE

•

FTMX ..

I

311lNJ

eut_

1-

."

11

JS

(f.I

f'5

l£Jl61111

8016004098 PIN

s!ll>ttlFy ..

K(

J6

ca

I\)

c."

if

c

z

o

::::J

J41_«'4

500W

IIIIfllFlElI

UII£M

LPA-9!500

J2

»-1

I'f

Q

/

~

P4

9000

TR.Gm:~

::::J

Sl)

~

:D

-------=-.:..I-fJ.

;a

~

ASSY

CMlE COAX

L

':"

::::J

!»

1"3

Fn II;

lEH6THI

AIU

8043051305

8843051194

ISPEtlFY

R6S8

It.

PIlIiER

\.fVV

~

SUNAIR

LPA-9500

HALVARO

INSUI,..ATOR

ANTENNA

75·150

FT.

(CUSTOMER

SELECTS

WI

RE

LENGTH)

20

FT.

MINIMUM

6

FT.

GROUND

POST

ANTENNA

HEAV'"

COUPLER

STRAP

DETAIl,.

._

........ok•

.----

.,.

..........

.

ANTENNA (l,.OOP

TWICE)

A

WIRE

THROUGH

2-6

Figure 2.4

KW

Longwire

Antenna

Kit.

SUNAIR

LPA-9500

2.6 EXTERNAL

12.6.1

The Whenever possible, the primary power source

ampere capacity, type primary power interconnect three black described. The

12.6.2

Separation

is fumished jacketed. This cable

The is

N

PRIMARY

LPA-95oo

will

insure that

each

NO.

and

the white wires connect to the

TRANSCEIVER

between

shown

adequate for transceiver OS8864ooo0

in

Figure

with

RF

coaxial cable

CONNECTIONS

POWER

requires a

manual

all

10

AWG

standard

primary

disconnect

power

has

diagram

conductors. The

cable

CONNECTIONS

thetransceiver

2.S.

The

transceiver accessory

the

LPA-9Soo.

is

available

is

also

available

to

should

be

used.

CONNECTIONS

power source that

switch

been

forthe line voltage

as

fumished is 10 feet

and

The

control

in

lengths specified

in

amplifier spacings of

Connector kits are provided

I

can

should

(40 ampere

removed

from the unit prior to entrance for servicing. Referto Figure

green

wire

con

115

or

230

I

the amplifier

cable 0579240002

lengths specified

may

plug,

less

provide

be

connected

if

primary source is 115

connection

nects to the station primary power ground system. volt long.

be

PS,

by

the

by

than 50feet. For distances

up

to 2.5

kVA

(115

or

230

VAC).

to

the amplifier

details. The Power

power

source at the disconnect switch previously

up

to

150

feet.

The control cable to the transceiver

is

fumished

is

37 conductor, NO. 20

customer. the

customer.

with

the

with

Type

LPA·9Soo

through

VAC).

Gable

the transceiver. The

RG-58A/U,

above

and the transceiver.

a double-pole,

An

arrangement ofthis

Assembly contains

AWG

wire,

50

feet, RG·8A/U,

shielded

0588130001

plug

The

PS,

and

20

2.S

"'

is

PI

12.6.3

Theamplifier's RFoutput connector isalsofumished regardless of the distance to the antenna or antenna coupler.

RF

OUTPUT

CONNECTIONS

{

LPA-9600

Figure 2.5

GRC

AC

LINE

Power

1

in

the Connector

J3

-

A

-

B

~

C

'"'"-

Cable Assembly

1'3

-

~

!--

""--

A

B

C

GREEN

BLACK WHITE

Kit.

RG-8A/U

}

PRIMARV POWER

115/230

'%15%

50

to

8086002297.

coaxial

VAC

50

HZ

cable

should beused,

2-7

SUNAIR LPA-9500

':"kea

_

076100003~"

~£'E>?i

aa

AT-gOOD

39

PH.

CPWD8F-20-39P)

CONNECTOR

1011130009

A)~

____________________________

B)

C)

~

E)

F) G)

H)

J)

Ie)

L )

w)

N)

P)

A) S)

T)

U)

~

W)x

X) Y)

Z)

A.>

~

!:>

~

CABLE.

37

PH.

·~2~B~V~TUN~E~E~N~A=B=LE~

ICW

cbNOUCTOA.

057924000e

COUPLE

A gETECT ( J

~

IIADLT'

6

CHANNEL qtANNEL 21 ( Z CHANNEL

CHANNEL

ICW

!'"OWEA

I'IeFLE(:TEO POWE.. <

TUNE

ICW

pDWE..

BAND 8 seLecT BAND 7 SeLEct BAND 5 seLecT BAND 3 SeLeCT

BAND 1 SeLeCT

2

2· e·

SELECT (

CCMotAND ALC ACC

DETECT 1

kEY~SDRY

ItW OIHII:t;T P

TUNING

CHANNEL CHANNEL

CHANNEL

ICW

FI ( W

2i 27

oN

.20

___________________________

LPA-9500

37

PN.

CMS3106A-eB-~lS)

CONNECTOR

0754320006

--«S

( N

w

'e

( U

<

!:!

( T

~

<

IC

<

~

<

~

(

!:

( H

<G

<E

(C

(

~A

(

<

( L

(!

<x

(A

D

~)

G

-)~---------------------------~BA~ND~~O~s~e~L~e~C~T~~---------------------------~

~)

!>

:!.>

9

~

~ ~)

9)

~)~

______________________________

leW

POWER

BAND 8 seLecT BAND 2 SeLeCT BAND 4 seLecT

GROUND

CHANNEL

leW

.=26~V~D~C~(~2~W~IR~E~S~I~---------

OliTECT 2 ( E

C 2 WIRES I ( 0

2 • (

FORWARD

POWER (

_______________

( ( F

<B

(V

~(!

-

~

!:

Figure 2.6 9000 Series Exciter{Transceiver To LPA-9500 Control

Cable.

12.6.4

When or use

ANTENNA

an

antenna

control

cable

COUPLER

coupler is

assembly

CONNECTIONS

to

be

used,

cable construction

8092500096 (specify length)

I

is

accomplished

see

Figures

using

2.2

connector

and

2.3.

1008390011

12.6.5

Grounding

RF

lengths

STATION

terminals

ground

system.

to a minimum.

RF

Use 1or 2 inch

~

GROUND

are

provided

SYSTEM

on

the

transceiver,

wide copper

CONNECTIONS

LPA·95oo

strap

or

NO.6

2.7 PRELIMINARY CHECKS AND APJUSTMENTS

Determine necessary to

Al

OSl. is

If the

Otherwise, set the power levels

from

change

in

the

LPA·9500

a)

CW,

b)

watts

the

voltage

proper

is

received asa

Set LPA-9S00

Set

out.

customizing

voltage customizing are

position.

system

transceiver/exciter frequency

to

SOOW.

transceiver/exciter

with

as

follows( see

Key

label

the

proper

shown

its

companion

transceiver/exciter

to

AM.

in

Figure

to

14.2000 MHz.

Key

transceiver/exciter

line voltage forthe unit

Figures 2.7

transceiver/exciter, noadjustments

5.1

for component locations}:

and

I

and

antennacouplerforconnection tothe

AWG

wire

or

larger

for

this

bonding.

being

and

2.8.

Be

Set

transceiver/exciter

adjust

A3A2R33

and

adjust

installed.

sure that the

for A3A2R43

500

Connection

Fan

should

MODE

watts

for

Keep

Voltage

be

necessary.

to

out.

200

station

lead

changes

Switch,

2.8 BACK MOUNTING KIT OPTION

An

optional

racks.

slide

See

Figures 2.9

rack

mounting kit is available to facilitate installation ofthe LPA·95oo

and

2.10.

in

standard

E.I.A.

equipment

2-9

t

~aMS~b~~.~~a

SUNAIR

LPA-9500

__________~.............................

I

________

....__....__........__....__............__............

SEE

DETAIL A 8 B

_

2-10

BlK

WHT~~~

DETAlL

230VAC

Figure 2.7

CIRCUIT

Voltage

A

BREAKER

Customizing

WIRING

AUXILIARY

POWER

SUPPLY

SWITCH

WHT

- Circuit Breaker/Auxiliary

BLK_

JUMPER

115VAC

CIRCUIT

DETAil 8

BREAKER

Power

WHT

WIRING

Supply.

ISUNAIR

LPA-9500

I

230VAC

UNIT

CONVERTING 230VAC

Figure 2.8 Voltage

Customizing

UNIT

- RF/PS

TO

115VAG

Module

A4

(4

Each).

2-11

I

SUNAIR

LPA-9500

I

2-12

RACKMOUNTlNGKJTLPA-9500

SUNAIR

SUNAlBPJN

80660042XX

50660043XX 6032041204 0538750006 Nut, Clip 10-32 0538870001

1002860032

80660042XX

Back

Mounting

Bracket,

Chassis

Screw,

Shim,

Plate

PESCBIPDQN

Rack

Slide

Ornamental 10-32 x 1/2 L

LPAIPS

Figure 2.9 Rack Mount Slide Details.

Kit

Mounting

I

SUNAIR

LPA·9500

Figure 2.10.1 Shock mount Equipment

Rack

With

Outline Dimensions

And

Details (Sheet

1/2).

2·13

"'--

• •

'rOI'

....

BLANK PANE!.'

EXCITER------f+I~

IlI.ANK

POWER

AIIlPUFIER

BLANK

PAM£l-----+H-

NOTE: IMOCICIIOUNT 0f'T1ON

--oc:::::::U==~-----=~

PANEI.----+l+-

-----+lH-

INC:AEAIU

2112"'

HlIGHT

IV

....

••

e.

lit"

'"

2·14

SHOCKMOUNTKlTEQUIPMENT

ITSMNQ SUNAlBPIN

1

2

3

4

5 1001280016

6 1001290003

7

8

0501650008 0501700005

0542880644

0841810001

1001300009 1002980011

RACKSUNAIR

6032090892

PESCRlP'DON

Washer, Split 3/8

Nut, Hex 3/8-16 X 9/16 AF

Bod,

lhd

Hex

3/8-16 X 4

5/8-11,

Instructions

Isolator, ShockNib. 50-80 Lbs Isolator, ShockNib. 100-155 Lbs

Bolt,

Washer, Split 5/8

Installation

Lg

1"h1/2

Lg

2

4

2

4

4 4

1

Figure 2.10.2 Shockmount Equipment Rack With Outline Dimensions And Details (Sheet 2/2).

LPA-9500 LINEAR POWER AMPLIFIER

INSTALLATION WARNING

If the LPA-9500 9600 power

1.0 Turn the LPA-9500 Circuit Breaker (A8CB1) OFF.

2.0 Turn the RT-9000 power ON.

3.0 Set each operating channel position to

the value.

4.0 Turn the LPA-9500 power with the desired RF power levels.

(1

kW) Amplifier, accomplish the following procedure before turning the LPA-9500

on.

is

installed with a RT-9000 that has previously been operating with a LPA-

125 WATTS. Press the ENTER key to store

ON and program the RT-9000 operating channel positions

I

SUNAIR

LPA-9500

I

SECTION

III

OPERATION

3.1

GENERAL

This

section Solid and

Maintenance

State

provides

Power

information

Amplifier

Manuals

and

for

detailed

and

instructions

an

automatic

antenna

information

required

coupler.

regarding

for

operation

Refer

operation of

ofa

transceiver,

to

the

these

transceiver

units.

the

and

3.2 FUNCTION AND LOCATION OF CONTROLS AND INDICATORS

Table

3.1

lists the controls

and

indicators

of

the

LPA-9500

front

panel.

Locations

are

shown

3.3 OPERATING THE LPA-9500

13.3.1

Insure and

OPERATION

that

the

transceiver/exciter

in

the

radio

manual.

WITH

If

an

antenna

9000

and

SERIES

the

LPA-9500

coupler

EXCITERITRANSCEIVER

are

is

being

installed

used,

properly

insure

its

by

referring

proper

I

to

installation

LPA-9500

the

coupler

in

Figure

Section

II

also.

500W

Operation

3.1.

in

this

Linear

manual

a) Apply

b)

On

LPA-9500,

1.

power

Without

to

the transceiver/exciter POWER

an

lamp

automatic

will

antenna

light

and

LPA-9500.

and

LCD

coupler,

will

display

"SYSTEM

system

OPERATIONAL,

5OOW'.

2.

With a CU-91

00

antenna

coupler,

"FAULT:

COUPLER

UNTUNED,

5OOW'.

c)

d)

e)

~

OPERATIONAL".

1.

Without

ready

to

operate. Ifinstead

Reset

the

LPA-9500bytumingthetransceiver/exciteroff,

9500

tum circuit

If

FAULT

dthroughfbelow. v Select Depress

On

antenna Series

does

2.

With aCU-9100antenna

operating

'CPLR

LPA-9500,

1.

If after tune

orfeeclline.

or coupler

an

breaker

not

clear.

frequency

TUNE'

LCD

will

After

completion

manual.

automatic

the

OFF

see

on

button

display

attempt.

Attempt

antenna

FAULT

then

Section

coupler

transceiver/exciter.

on

system

oftune.

FAULT

retuning.

coupler,

lamp

on

ON;

or

using

V

of

this

FAULT,

the

9000

Series

messages:

(maximum 2 seconds)

lamp

on

LPA-9500

If

FAULT

'SYSTEM

the LPA-9500llashes, this

the

PWR

manual.

the

LPA-9500

Front

"COUPLERTUNING",

does

OPERATIONAL'

wait

30

LVL

key

FAULT

Panel.

system

bums

steadily,

not

clear,

seconds,

on

see

message:

indicatesafau

then

the

keyboard,

lamp

"COUPLER

is

ready

this

indicates

Section

METER:

is

displayed

tum

will

bum

for

operation.

Vofthis

FWD,

It

in

back

on; orat

reset

steadily.

TUNED".

a fault

manual

PWR

and

system

the

LPA-9500.

the

LPA-9500.

Follow

"SYSTEM

in

the

and

the

LVL: LVL:

the

LPA-

steps

coupler,

9000

is

~~

..

7t.:LIDid

0G

...

3-7t

};:MO.LN:iI~~~}{'17t

SUNAIR LPA-9500

2.

If FAULT lamp on LPA-9500 flashes, this indicates a fault in the LPA-9500. Reset LPA-9500.

FAULT does not clear, see Section V

I

NOlC:

I If an antenna coupler is not used, tuning is not required when the

of

this manual.

operating frequency

of

the transceiver/exciter is changed. With an antenna coupler, coupler tuning is required with each frequency change.

If

LCD

CIRCUIT

~

•••

Mt"~~

l

..

.,....,-.~

d~~I~lIo,~

'"

,~,-"'"

BREAKER

.""'~

3-2

KEYBOARD FAULT LAMP

Figure

3.1

LPA-9500 Controls And Indicators.

POWER LAMP

ISUNAIR LPA·9500 I

Table

CONTROL

Meter, A2M 1

LCD Assembly, A2A2

Circuit Breaker,

FAULT Lamp, ASDS2

POWER

Keyboard, A2A 1

OR

Lamp,

INDICATOR

ASCB1

A8DS1

S1

3.1

Controls

And

Indicators - Front

Panel.

FUNCllON

Displays the following:

1.

0 -650: Forward Power

2.

0 -140: Reflected Power

3.

0 -

6OV:

Selected PA's voltage

4. 0 -18A:

This Uquid Crystal Display (LCD) displays all systems messages and conditions.

Applies primary power to the r.PA-9500.

A

red

fault lamp which, when flashing, indicates a fault

steady fault lamp indicates a fault external to the LPA-9500.

A green lamp which indicates that primary power has been applied to the

LPA-9500.

The keyboard affords the operator/technician the ability to check individual voltage, current and power levels. The keyboard also provides the operatorl

technician with the ability to select desired power operating levels and to failure indications.

Selected PA's current

in

watts

in

the LPA-9500. A

read

1.

Ic#1:

PAII1

on

meter.

2.

Ic#2:

PAII20n meter.

3.

Vc#1:

PAII1

on meter.

4.

Vc#2:

PAII2

on

meter.

5.

FWD:

watts on meter.

6.

REFD:

in

watts on meter.

7.

PWR LVL: When depressed changes output power level reading on LCD Assembly from 1 kWto 500 watts to 1 00 watts (bypass). Also used to reset LPA-9500.

8.

*:

'Fault: MULTIPLE..PRESS

fault message. A different fault message will be displayed each time

the key is depressed until all faults detected have had messages displayed.

When depressed displays power supply current of

When depressed displays power supply current of When depressed displays power supply voltage When depressed displays power supply voltage When depressed displays forward output power When depressed displays reflected output power

When morethan one fault occurs, the LCD Assy will read

*'.

Depress this key to display each

of of in

I

SUNAIR

LPA·9500 I

•

ITHIS PAGE INTENTIONALLY LEFT BLANK. I

4.1

GENERAL

Refer

to

Figures

The

LPA-95oo isan transceivers combining operation ofthe In

addition

or

shuts

The

RF combiner, RF

modules.

over

300 combiner, harmonic

frequency

so

that

or

networks, to

reporting

it

down

circuitry

and aharmonic

watts

providing

outputofthe amplifiers byat least

span

no

tuning

THEORY OF OPERATION

4.1

and

5.4.

all-solid-state,

exciters.

unit

completely,

consists

Each

power

(1.5 xfrequency),automatically

is

The

harmonic

and

report

malfunctions,

of

low

RF

amplifier

output

over

600

required.

self-contained,

unit

is

complete

filters

and

malfu.nctions

the

providing

an

input

power

pass

filter.

module

capability.

watts

output

microprocessor

exciter

consists oftwo

The

SECTION IV

500

watt linear

in

one

package

control

in

English

only

splitter,

The

input

output

capability 75

dB.

language

reconfigures

operation.

two

broadband

power

conservatively

from

the

in

one

The

filter

selected bythe exciter

and

splitter

two

RF

feedline.

is

split

power

amplifier

includes

circuitry.

on

a front

the

RF

power

divides

rated

amplifier

The

into8bands,

and

SUNAIR

designed

RF

amplifier

Built-in

panel

the

diagnostics

liquid

amplifier

modules iscombined

harmonic

buffered bythe

to asafe

amplifier

exciter

power

amplifiers

each amaximum ofone-half octave

for

use

modules,

monitorth,functional

crystal

power

low

alphanumeric

operating

modules,

equally

combined

pass

microprocessor

with

power

an

output

among

in

the

output

filter attenuates

LPA-9500

9000

Series

supplies,

display.

power

level,

power

the two

to provide

power

the

circuitry,

Each

power

amplifier powersupplies RF

module

bias

control

voltage to

module

are

high-efficiency

assembly

the

dual

amplifier,

consists ofan

switching

provides

microprocessor-controlled

ensuring

RF

regulators,

linearity.

4.2 CONTROL PANEL MODULE A2

Refer

to

Figure

The

Control

LCD

Assembly.

diagnostic

the

meter keyboard Computer

9500.

The·

currents,

5.5.

Panel

Module

and

the

informationI and display to

four

close

MOTH

key

is

collector

functions.

the

proper

ERBOARD

used

to voltages,

is aplug-in

3 x 4

keyboard.

the

function

The

.row A3A

scroll

through

panel

PC

Assembly

to

the

1.

The

and

either

arrangement

The

LCD

selected

proper

PWR

LVLkey

multiple

forward

module, a power

with

built-in

on

the front ofthe

Assembly

to

be

Control

column

fault

indications.

or

reflected

A2A1 is

displayed

Panel

when a key

is

used

supply,

AC

on

A2A2

to select

The

power.

and

currentfoldbackand

power

inputtothepowersupplies,

LPA-9500

used

the

meter.

provides

is

depressed

the

desired

meter

an

RF

module

to

display

The

3 x 4

the

interconnections

and

pass

operating

is

used

to

display

control

overvoltageprotection.

which

contains

the

power

keyboard

the

power any ofthe

assembly.

and

the

level

selected,

is

used

which

information

level ofthe

four

meter.

permitthe

The

regulated

the

to

select

on

to

the

LPA·

collector

4-1

I

SUNAIR

LPA-9500 I

4.3 COMPUTER ASSEMBLY

14.3.1

Referto The

Microprocessor Microprocessor Connector interfaces

A3A front overtemperaturefan.

14.3.2

Refer

4.3.2.1

The fault indicators A3A3U1 interface it

PC

ASSY

Figure

Computer

1 J4 interfaces

panel

5.6. MOTHERBOARD

Board

A3A 1

J1

to

the Filter

of the

PERIPHERAL

to

Figures

GENERAL

Peripheral

when afault

4.2

BoardA3A2

and

with a CU-91

COMPUTER

A3A3

and

plugs

into

provides

with

LPA-95oo

routingforthe signalstoand

Module

the

AS.

transceiver/exciter

by

BOARD

and

5.7.

contains

detectors

has

are

occurred

00

Digital 1OOOW

A3A1J6

transferring control

located

A3

MOTHERBOARD

acts

as a back

to

interconnect these two

and

Connector

A3A21

much ofthe

on

this

in

the

electronic

Coupler.

plane

A3A1J7.

A3A 1 J3

and

the

signals

analog

board.

operation

A3A

11

to interconnect the Peripheral

boards

The

Peripheral

from

the

power

connects

antenna

circuitry

These circuits

coupler.

to the front

used

of the

to

the balance of the

Board

ampl

ifier

to the Control

Connector

panel

..

to

monitor

are

designed

LPA-95oo.

plugs

assemblies.

Panel

and

Also

into

A3A

lights,

control

to

provided

Board

A3A

Module

1 J5 interfaces

the

inform

A3A2

LPA-95oo.

1 J8

and

Connector

A2.

bypass

LPA-95oo.

Microprocessor

are

circuits

to

the

The

A3A1J9.

A3A1J2

Connector

with

the

relay,

and

Many

which

The

Peripheral

1.

The

it

from

producing

2.

The

DETECT 2 operate

3.

The

4.

The

attached

The

Peripheral

keyboard

the

front

panel lamp)backlightfornighttimeviewingoftheLCDAssembly.Alsoprovided monitors

of

ALC orACC

4.3.2.2 TEMPERATURE SENSE COMPARATORS

The

purpose ofthe

on

the

two amplifier speed.

Ifthe temperature continues

Board

signal

signals

signal signal

and

is

Board

to select

LCD

the

forward

needed

individual

heatsink

is

responsible for

BYPASS

READY

used

+28

tuning.

Temperature

reaches

which

its

power

REMOTE,

circuits to

drive the

VDC

contains

meter

functions.

Assembly.

and

reflected

to

control

power

between

the

causes

output.

in

the

TUNE

the multiplexer circuits

Similarly, a OCto

Sense

amplifiers

the

KW

DETECT,

9000

Series

fault

lamp

ENABLE

Contained

power.

the

9000

Comparators

has

reached

75°

and

to

increase

This

following

LPA-95oo

on

which

Series

85OC,

functions

to

be

FAULT

Exciter/Transceiver.

the front

also

AC

circuit

and

panel

instructs

which

is a DC

inverter

is

responsible for selecting

equipment

U1,

isto

detect

either of two

Microprocessor

reaches

required

bypassed

REMOTE,

of the

LPA-9500.

the

transceiver that a

permit

to

DC

converter to provide contrast adjustment for

is

provided

attached

U2

when

the

thresholds.

A3A3U1

between

for proper operation of the

in

KWPOWER

ten

which

to the

temperature

1 oo°Cto

the

event of a

of the twelve front

drives

is

the

LPA-9500.

When

causes

1200C,

fault

DETECT

CU-91

the

EL

ALC/ACC

and

producing

on

anyofthe

the temperature

the

fan

A3A3U1

LPA-95oo:

which

in

tum inhibits

1,

and

KWPOWER

00 antenna coupler

panel

keys

on

(electroluminescent

Control

to operate at a higher

Circuit

the proper

two

heatsinks

on

any

power

shuts

down

which

level

the

is

the

I

SUNAIR

LPA·9500 I

overheating

4.3.2.3 The

purpose ofthe the temperature of monitor a If this In

addition,

4.3.2.4

power

OVERTEMPERATURE

Signal

called

signal

is high,

A3A3U1

GAIN

FAULT

•

The

Gain

Fault

Comparators

power

amplifier

power.

4.3.2.5

The

power message BYPASS. will

If the

Gain

amplifier

place

GAIN

assemblies.

power

FAULT

Fault Buffer

assemblies.

to

be

displayed

The

signal

LPA-9500

amplifier.

BUFFER

Overtemperature

power

amplifier

FILTER

A3A3U1

will

COMPARATORS

amplifier is

BUFFER

is

the

VSWR

in

BYPASS.

force

device

on

MODULE

will

cause

the

are

a series of two detector circuits

The input

not

U7

When

the

LCD

FAULT

protecting it

U3

BufferU3

assemblies

FAULT.

an

indication

LPA-9500

U12

power

producing

by

which

any

of the

Assembly

is

also

isto

provideameans bywhich

1,

and

2.

U3

also acts

This

Signal

originates

on

the

LCD

to

BYPASS

to a particular

the

required

Microprocessor

GAIN

A2A2.

monitored

from

operation

power

amountofpower,

A3A3U1

FAULT

At the

by

A3A3U1

the

excessive

signals

Assembly

to

protect the filter

used

to monitor

amplifier

monitors

go

same

time

thru

VSWR.

Microprocessor

as a position

in

the

Filter

pointing

assembly iscompared

Microprocessor

high,

A3A3U1

U7.

If this

from

Fault Detector

out

the

module

the

power

the status ofthe

A3A3U1

will

place

Signal

A3A3U1

which

faulty filter

gain ofthe

A3A3U1

goes

can

A3A3U1

U9C,

from

to

gain ofthe

cause a gain

the

LPA-9500

high.

monitor

can

U20A.

module.

damage.

individual

its

output

is

alerted.

two

fault

A3A3U1

in

4.3.2.6

The

are

volts, from

4.3.2.7 The

by

ifthe voltages are

4.3.2.8 U19

that is voltage A3A3U1

VC

MONITOR

purpose

mounted

theoutputofU11

operation.

purpose

the logic

is

too

of the

in

VOLTAGE

of the

control

VC

MONITORNOL

used

by

low.

is

too

high

takes appropriate

each ofthe

Microprocessor

U19

COMPARATORS

VC

Monitor

goes

MONITOR

Voltage

circuitry

too

high

is also

or

too

Comparators

power

high.

Monitor

in

the

ortoo

TAGE

used

low.

A3A3U1

action

U11

comprising

amplifier

Microprocessor

COMPARATORS

Comparators

LPA-9500.

low.

MONITOR

A3A3U1

to

determine ifthe

and

assemblies.

Microprocessor

BUFFER

to determine if

periodically

alerts

the

operator

U11 isto

When

A3A3U1

U13

comprising

+28V

will

U19

any

logiC

samples

to

monitorthe

the

voltage

sense

this

and

U13

is

to

monitor

A3A3U1

of the

control the inputs of U

the

monitorstheoutputsofU13todetermine

+48V

power

voltage

condition.

individual+48V

in a power

remove

the

is

too

19.

supply falls below

the

defective

+28VDC

supplies

low

or

If

any

of

power

supplies that

power

and

+5VDC

is

prodUCing

ifthe

+5

V logic

these inputs

+42.3

supply

utilized

a voltage

control

are

high,

ISUNAIR LPA-9500 I

4.3.2.9 COLLECTOR VOLTAGE METER CONDITIONING CIRCUIT U14

U14

functions

U

14C

conditions the

for

PA

#4. function divider Multiplexer resistance)

reduces

as

four distinct

(PA

#3

and PA#4

identically.

the

+48V

(approximately

causing a +48V

+48V

For

example:

identical

for

PA

are

not

to

+3V.

470

indication.

#2,

installed

For

which

ohms

stages.

U14B

conditions the

in

the

PA

#1

,+48V

when

applied

resistance),

(Full

scale

U14A

conditions the

+48V

for the

LPA-9500).

is applied

through

supplies approximately

on

the meter is

These circuits are voltage follower circuits

to

U14A

a 33.2 k

+48V

100

from

PA

#3,

through

ohm

resistor 80

IJA.)

PA

#1

for display

and

U14D

conditions the

a resistor divider.

and

U17,

the

IJA

to the meter

on

the

meter,

+48V

which

The

resistor

16

Channel

(3.7 k ohms

4.3.2.10 COLLECTOR CURRENT METER

The Collector Voltage

inverting amplifier

of conditioning the voltage assembly deflection of the meter is equivalent deflection section of U

4.3.2.11 16CHANNEL

The

purposeofthe 16Channel

to

the

front

selection

4.3.2.12 MULTIPLEXER SWITCH SELECTOR LATCH U18

The

purpose ofthe

can

sel

ect

inputs

to

Meter

and would

16.

panel

which

the

U17

Current

Conditioning

producing

proper to

Meter

which

indicate

meter as they

enables

Multiplexer

meter

cause

U17

Conditioning Circuit performs a function similar Circuit

inverts a minus voltage

which

a proportionate current source to the meter

a half-scale

MULnpLEXER

U17

information

to

U14.

is equivalent

to 18amps.

deflection

Multiplexeristo

are

selected

to

select the proper

Switch

select

the

CONDlnONING

U16

is divided into four sections, A thru

to

resulting

U17

provideameans bywhich

by

the

Selector

to

be

senttothe

proper

Latch

keyboard

plus voltage for indication

to

the collector current

If a

power

amplifier is

from aSOIJA

keyboard.

analog

gate circuit

is

to

provide a

front

panel

selected current

CIRCUIT U16

being

to

deflect drawing

current

different

Microprocessor

output

means

meter to

be

source

to

that

performed

D.

on

the

meter.

drawn

it

the

proper

a current of 9

source

to

by

displayed.

produced bythe

current

A3A3U1

be

supplied

which

to

by

the Collector

and

acts as a unity

Each

one

by

each

power

amount.

amps,

concerned

sources

provides

Microprocessor

U18

be

supplied to the

can beapplied

binary

to

the

meter.

provides

gain

is

capable

amplifier

Full

scale

the meter

input

A3A3U

the

binary

m"eter.

1

4.3.2.13 OVERCURRENTDETECTORSU15

The

Overcurrent PA#1, U15B installed assemblies to operation,

4.3.2.14 LCD

A signal called used LCD BAD7.

in

the overcurrent

by

the

Assembly

Detectors

monitors

the

LPA-9500).

respectively.

condition

reducing

LCD

the

ENABLE

LCD

E is

Assembly

where

are

comprised

PA#2,

output of the

produced

itpermitsthe

U15C

The

detectors are set to detect a condition of

If a

power

amplifier isdrawing

by

U15.

INVERTER U6E

on

A2A2

as

LCD

of four

monitors

Once

the

LPA-9500

the Microprocessor

an

enable.

to

read

identical

PA

#3.

condition

from

U6E

or write information

and

too

much

is verified,

1000

Board

inverts

circuits

U15D

current,

to

500

A3A3

the

U15 A thru

monitors PA#4. (PA#3

then

watts.

and

signal

from

D.

U15A

monitors the current

17.5

amps

in

the four

then

Microprocessor

A3A3U1

needs

to a signal

orto Address/Data

removes

to

be

inverted

called E and

and

PA#4

are

not

power

amplifier

A3A3U1 isalerted

that amplifier

before itcan

sends it

Bus

BADO

from

be

to

the

through

in

I

SUNAIR

LPA-9500 I

4.3.2.15

The indicating A3A2R56. established

4.3.2.16 FILTER FAULT

The

available

it.

U20Amonitors the from high amplifier

4.3.2.17

The If

power

When

producing

these

VSWR

purpose

that

purpose

is

the poweramplifiers

for

longer

assemblies,

RF

Present

is

present

Microprocessor

only

FAULT

of

the

VSWR

action

is

U9B

compares

by

R56.

the output of

of the Filter Fault

malfunctioning

forward

than

50

preventing

PRESENT

Detector isconnected

on POUT

A3A3U1

power.

if

RF

Since

is

present.

required.

ms,

DETECTOR

Fault

Detector

U9B

the

ratio

of

U9B

DETECTOR

Detector

in

such a way

power

leaving

with

the

power

then

A3A3U1

them

DETECTOR

MONITOR, Q4will

certain

Q4

tothe

detects

faults

U9B

is to alert Microprocessor

may

be

adjusted

FWD

PWR

goes

high

USC,

U20A

is

to

wam

that

power

the LPA-9500.

leaving

causes

from

damaging

Signal POUT

the

low,

can

only

the

betumed

then

be

to

trip

to

REFD

alerting

Microprocessor

the

legitimate faults

A3A3U1

is

being

LPA-9500.

LPA-9500

the

filter

MONITOR

on,

It

knows

A3A3U1

on

VSWR

PWR.

sent

U9Ccomparesthe

A3A3U1

to

module.

producing alow

through

faults of2:1 or 3:1

When

REFD

of the excessive

A3A3U1

into the filter

monitors the

go

to

BYPASS

as

is

U9C ofthe

on

its

software that

in

the presence of

that a

PWR

when

one

assembly

power

by

US,

the

VSWR

VSWR.

entering

outputofU9C

shutting

Filter

RF,

fault

is

occurring.

using

potentiometer

exceeds

of the filters of the eight

but

Fault

Coupler

the

power

A3A3U1

the threshold

is

not exiting

the filter

and

down

the

Detector

Interface

amplifiers

will

modules

if it

circuit. Buffer.

monitor

from

goes

power

are

•

4.3.2.18 FORWARD

U23Aand is

to sent A3A2U17,

front

meter

this

4.3.2.19 REFLECTED

U23B Conditioning

the

4.3.2.20 REFLECTED FAULT

The condition high. actually

013 is a

buffer the

to

two

places.

the

panel

meter

on

the

meter.

and

014

reflected

purpose

is

A3A3U1

exists.

forward

16

9000

Circuit

power

of the

occurring

POWER

peak

power

Through

Channel

of

LPA-9500.)

Series

is a peak

is

identical

information

Reflected

in checks and

if

so,

detector circuit

information

potentiometer

Multiplexer.

Exciter{Transceiver

POWER

detector circuit

the

LPA-9500.

the

reflected

immediately

METER

used todrive

The

other

METER

to

the

function

on

the front

DETECTOR

Fault

Detector

If the

fault

places

CONDITIONING

U1

OB.

thatthe

(R61

CONDITIONING

condition

Peripheral

A3A2R61

is

used

signal

produced

display.

used

to

of

U1

panel

meter of the

U9D

is

to

wam

reflected

the

LPA-9500

this

to

The

drive

OB.

Microprocessor

power

indicated

CIRCUIT U10B, U23AAND

U1

OB

isconfigured

Board

information

adjust

the

is

FWD

approximate

CIRCUIT

U10A.

A3A2R59

LPA-9500.

level

by

the

in

BYPASS.

receives.

is

full

scale

PWR

U1

The function of the

is

used

reaches

Reflected

as avoltage

U1

called

FWD

level

REMOTE

power

level

OA,

U23B AND

to adjust the

A3A3U1

and

OB

of

when a severe

exceeds

Fault

Q13

follower.

produces

PWR

LOCAL

FWD

PWR

which

is

of the

LPA-9500

Q14

Reflected

full

200

Detector

Its

purpose

a voltage

transferred

scale deflection of

watts,

to

which

and

goes

LOCAL

Power

reflected

on

to

is

read

Meter

fault

U9D

goes

insure that it

is

to the the

on

I

SUNAIR

LPA·9500

I

4.3.2.21 The

and summation enabling

The ALC/ACC is

a low it

transistors

and

at

Soo

and

U1 power

level. the output of the

If

the

Transceiver

ALC/ACC

purpose ofthe

to

provide

the

ALC/ACC

circuit. means

Q1 0and

R42

would beused

watts,

ACC

voltage.

OC

is

used asa buffer

and

reflected

U1 00amplifies

LPA-95oo

outputofU20Cdecreases,

ALC/ACC

ALC

of

forward

transceiver to provide the

Control

The

that

this

high

power

Q3

will

to

compensate.

which

increases

CONTROL

feedback

and

Circuit functions signal 1 t<YV

the

Q11

shorting out potentiometers

to

turns

to

the

level

decrease,

CIRCUIT

Control

reflected

Microprocessor

adjust the

off

amplify the

are

summed

the

Circuit

when

power

ALC/ACC

ALC

Q1 0 and

adjusted

reducing

U20B

and

the

outputofQ12

RF

power

operating

reflected

and

LPA-95oo

in

and Q11.

by

the

U20C

U1OC,

is

to

provide

and

either

one

of two

is

Board

ACC

R33

power.

fed

to

R42,

or

ACC

amplify

supplied

U10D,

U20A,

ACC

in

SSB

or

increases

with

the

correct power output

modes.

received

wishes

control

R32and

R42

to

decreases,

to

A:3A2R33

levels.

and

R43

A:3A2A28

R42

and

the transceiver

the

to LPA-9500

BAND

feedback

CWo

It functions either

from

the Microprocessor

operate

and

now

where

R43,

and

level

red

ucing

C,

Q3

AND

to

the transceiver

The

ALC/ACC

or decreases the feedback

in

a 1000 watt

R43.

With

R33

If 1

t<YV

ALC/ACC isa

become

is

adjusted

to

part of the effect controlling the

used

to

adjust the output

all

four

potentiometers

drives

Q3.

which

increases the

by

R32

the

ALC

voltagetothe

compensate.

Q12

when

Control

level.

as a 1000

and

If the output of

or

Circuit monitors the

watt or

Board

A:3A3.

mode.

R43

high

indicating operation

..

can

RF

R32

and

9000

operating

to

the transceiver,

as a Soo

This low

shorted,

ofU1

OC.

affectthe

U1 00decreases,

power

A33

to drive

Series

in

AM,

watt

If this

signal

turns

A3A2R32

ALC

Forward

relative

supplied to

Q12.

Exciter/

on

4.3.2.22 The

display contrast R164

4.3.2.23 The

A2A2. backlight,

4.3.2.24

DC

TO

purpose

purposeofU22 isto

4.3.2.24.1

The on

the

ENABLE,

CU-91

REMOTE,

The TUNE the monitors The equipment

of

is

the

adjustment

DC

TO

U22

acceptsa+SVDC

permitting

COUPLER

GENERAL

coupler

Peripheral

READY,

00.

Several

t<YV

LPA-9Soo

ENABLE.

power

being

Signals

LPA-9S00

to

DC

CONVERTER

U21

is

to

and

intensity.

for

AC

CONVERTER

provide

night

CONTROL

control

circuits

BoardA3A2.

FAULT,

signals exit

DETECT,

is

notified that

When

sent

through

READY

utilizes these

display the

provide

the

+SVDC

the

display contrast

an

input

viewing

employed

and

FAULT

the

LPA-95oo

the

and

condition

U21 LCD

Assembly

is

converted

U22

AC

signal tothe

and

produces

of

the

LCD

CIRCUITS

in

The

Signals

COUPLER

the

LPA-9S00

REMOTE,

CU-91

00

detects this

LPA-9Soo FAULT Signals

of

from

in

the

A2A2

with

to

-SVDC

and

intenSity.

electroluminescentlamp

approximately

display.

the

LPA-9Soo

interfacing

PRESENT.

for

t<YV

is

readytotune

to the

the

CU-91

an

algorithm

CU-91

the

use

POWER

signal,

CU-91

00.

00

on

to

CU-91

These

in

00

which

their front

a negative voltage

by

U21

and

applied

which

90VAC

permit interfacing

the

DETECT 1 and

when

it immediately selects

is

These

out

which

00

to

the

LPA-9500

signals

9000

the

signals indicate the

produces

panel

are

Series

LPA-9S00

power

from

the

displays.

equipment.

signals sent

with inputs t<YV

the transceiver.

which

can

to

potentiometer

backlights

excites

the

CU-91

include:

to

the

POWER

receives

BYPASS

status ofthe

be

used

to

vary

A3A2R164.

the

LCD

Assembly

electroluminescent

00

are

all

located

+28VOL

LPA-9500

These

DETECT

the

signal

operation

to

the

are:

+28 VOLT

The

LPA-9Soo

CU-91

9000

TTUNE

from the

READY

2.

so

that

Series

the

00.

I

SUNAIR

LPA-9500 I

4.3.2.24.2 The

purpose of the Coupler Input Detectors are: monitors these signals through as a high 9500 A3A3U of the tune cycle that the

4.3.2.24.3

COUPLER

+28

VOLT anytime the

at the

end

1 to detect ifa

COUPLER

INPUT

TUNE

CU-91

of the tune cycle that the

CU-91

INTERFACE

DETECTORS

ENABLE,

U8,

00

wishes to tune.

00

coupler

CU-91

00

READY,

Coupler Interface Buffer. The

is

has

failed

BUFFER

U6A-D,

is

to

COUPLER

CU-91

attached.

to

U9A

buffer signals that originate

PRESENT,

The

Signal

called

00

has tuned properly. FAULT

tune properly.

U8

when

and

FAULT.

+28

VOLT

READY

COUPLER

low,

indicates to the

in

the

CU-91

Microprocessor

TUNE

when

low,

00.

ENABLE

indicates

PRESENT

LPA-9Soo

These signals

arrives at U9A

to

is

at the

..

The

Coupler Interface Buffer

U8

Detectors.

When

RF fault conditions ignore those fault indications. Another input to it

is

an

indication to Microprocessor

4.3.2.24.4 Latch

U4 9OOOSeriesequipmentfrontpanelsandtheFAULTlightonthefrontpaneioftheLPA-950o. The output are

READY,

Signal

BYPASS

is

issued

and

when

also monitors a signal called

PRESENT

can

be monitored or detected. If the

OUTPUT

outputs the signals produced

KW

both

when

the

CU-91

LATCH

DETECT,

is

produced byA3A3U1

A3A3U1

00

is

used

by

Microprocessor

RF

PRESENT

low,

this indicates to

A3A3U1

U4

is

tuning.

FAULT,

KW

detects fault conditions within its operation

A3A3U1

U8

that the +28V

by

microprocessor

POWER

when

itwishes the LPA-9S00to operate

A3A3U1

that

Signal

is a Signal

A3A3U

DETECT

which RF

to monitor the signals

originates

is

present

is

high,

meaning

called+28V

is

out of tolerance

1 to activate the display messages

1,

KW

POWER

in

the

in

the

RF

TOO

DETECT 2 and

which

from

RF

Present Detector 04.

LPA-9Soo,

is

not present,

HIGH.

on

the

in

BYPASS.

warrant

the coupler Input

and

that certain

A3A3U1

If this signal

high

side.

BYPASS. This

command

going

to

BYPASS,

A3A3U1

the

LPA-

used

by

end

will

is

high,

on

the

signals

The

4.3.2.24.S

The purpose of the

U4

to the REMOTE, receives a

Bypass

the

4.3.2.25 BITE BITS The

LPA-9S00

controls these

LAMP

9000

Series equipment

KW

DETECT,

high

anytime Microprocessor

relay

is

capable of self-checking certain elements of its circuit operation. Microprocessor

BITE

DRIVER/RELAY

Lamp

Driver/Relay Driver Circuit

and

FAULT

K18

in

the

AS

BITS,

monitors

DRIVER

and

to control the

REMOTE

Filter Module to energize.

them

for circuits not operating properly

CIRCUIT

A3A3U1

USG,

is

to provide drive capability

Bypass

respectively.

wishes

to operate the

01,

OS,

relay.

Transistors 01 ,

06

also controls

Q6

LPA-9500

and

takes action accordingly.

to

the signals

OS

and 06control

FAULT

OUT

in

BYPASS.

exiting

LOCAL.

Latch

READY

This causes

A3A3U1

USG

4-7

ISUNAIRLPA·9500 I

14.3.3

4.3.3.1 GENERAL

Refer to Figures The Microprocessor Board A3A3 produces three major functions

interfacing intelligent information. The third function is the controlling of the diagnostic feature, within the LPA·9500 are monitored occurs.

Specific to the three major functions. the Microprocessor

MICROPROCESSOR

4.3

and

5.B.

ofthe

Keyboard

to the meter. The second function is the driving of the LCD Display providing it with

BOARD

both to provide failure information

A3A31

in

Board

A3A3 is responsible for the following activities

the LPA-9500. The first function is the

and

to trigger corrective action if a failure

ofthe LPA-9500:

a)

Monitors overcurrent signals and reflected fault signals from the Peripheral Board

b)

Produces drive dump commands to control the Power Amplifier Assemblies A4A3

c)

Monitors

the Filter Module Assembly

d) Produces buffered address/data

band

information from the 9000 Series equipment sothat it

AS

to select the proper

ADO

thru AD7linestothe Peripheral Board

Band

Filter

(1

thru

can

produce the controlling signals for

B).

in

which all major functions

A3A2..

(2

each).

and

the

LCD

Assembly

A2.A2..

e)

Produces

it has received from the Microprocessor Board is a command or a data

~

Produces

g)

Produces signals

(2

each).

4.3.3.2 MICROPROCESSOR

The Microprocessor

first

The second contains signals

When produces address address onto the

When address enabled, it

bus

U1

signaisAO

chip

bus

isADOthru AD7. a multiplexed address/data

isAB

thru~

RD,

wishes to obtain an

ALE

signal

is

directed to

ADO

requires a Device Selection mechanism to communicate

on

the

AB

can

either

and

A 1 forthe

selects which are used to enable various bus driven components

which

drive the power supply relays providing +4BVDCtothe Power Amplifier assemblies

U1

controls the functions of Microprocessor Board

and

w,ways

WR.

10/M,

an

instruction from

which

latches that address into Address

U9,

U1

then produces RDto U9and U9 responds by giving the instruction stored at that

thru

AD71ine.

thru A 15 address lines causing that port device to become enabled.

read

information from or write information to

LCD

Assembly to indicate to the

bus

containing either data or address information. The

contains address information. Thethird bus

and

ALE.

U1

EPROM

reads

the instruction, then acts upon

U9

it produces

Latch

with

U1

LCD

Assembly whether the information

word.

on

the Peripheral

A3A3.

an

on

U 1 contains three major busses.

is

the control/status

address on

UB

which forwards it to

it.

its input or output ports, it produces the

the

ADO

thru

When

thru AD7lines.

AD7.

U9.

Board.

bus

which

U1

then

Once the

the device is

The signals present it wishes to obtain to give 10

(write)

and

Memory operations. If

(read)

information to a device on the

on

the control/status bus are used

information from a device

ADO

U1

is reading from or writing to memory, the

by

U1

to transfer information.

on

the

ADO

thru ADllines.

thru AD7lines.

101M

is

usfiS.l

101M

RD

is used

WR

is

used by

by U 1 to discriminate between

line is

low.

If

by

U1

when it wishes

U1

is

reading from

when

or

writing from on

the

to

IOthe

ADOthru

ADO

thru

101M

AD7lines

AD7

lines,

line

into

is

high.

the

ALE

Address

is

low.

(address

Latch U8to

latch

select

enable)

an

is

pulsed

instruction

high

from

when

U1

EPROM

SUNAIR

wishes

U9.

When

to

write

LPA·,95CXt

an

address

data

is

present

I

4.3.3.3 ADDRESS LATCH

When

Microprocessor

the

address

the

address

4.3.3.4

The

EPROM U9is

to

fetch

AS

thru A15. order and

present,

to

contain

time,

U1

After a short

into from

bufferU19.

EPROM

an

instruction

address

the

also

and

on

U1

lower

causes

delay, instruction that transition,

4.3.3.5

The The reset transfers

it

will

POWER

PowerClearCircuitis circuit

provides a low

until

transient conditions

U1

was

U1

produces

U8.

U8

provides

the

data

U9

the

storage

from

the

lower

ADO

thru

AD7

will

issue

an

order

address

Memory

U1

will

stored

fetch

into

itself the instruction

CLEAR CIRCUIT

necessary on

36

to a high.

U&

an

continuous

information

device

U9, itwill

order

address

is

connected

ALE

signal

produce

information

DevlE!

issue a RD

at the

address

U2C,

to

36 of

have

passed.

address

on

address

on

the

ADO

where

Microprocessor

the upper order

ofthe instruction it

to

address

to

latch

that

of the Selector signal

to

USA, U9

selected.

on

U4A, U4B

initialize

U1

MicroprocessorU1

for a time after

Atthat

ADO

thru

AD7.

it

also

information

thru

AD7

latch

information

instruction

U7,

U21A,

AO

bus.

U8

U1's

programming

address

wishes

U8.

When into

which

to

issue a signal

thru A 7 for

also

ofthe instruction it

to

U8,

causing U9to deposit

When

U1

causes

ADO

thru

AD7

it

has

when

the

point,

U1 ispermitted

voltage

is

produces

provides

an

the

AO

ALE

EPROM

and

code isstored.

read

on

lines

ADO

the

address

information

causing the output of

U 1

wishes

to

fetch

called

on

its output

the

RD

selected

power is first

applied

to

run

to because

signal

to act

applied

the

LPA-9500.

lines,

signal

U9

A 1

When

wishes

thru

from

EPROM

ADO

to

make

upon.

to the

the

Power

which

by

to

drive

to

read

AD7.

at

U8

U8,

AO

U9.

At to enable thru

a low to

LPA-9500.

This

Clear

latches

sorting

the

U1

wishes

on

The

lower

is

correct

thru

the

same

AD7,

holds

Circuit

out

LCD

lines

A7,

U9.

the

high

U1

4.3.3.6 CRYSTAL OSCILLATOR

U34

provides a reference

dependent

4.3.3.7 MEMORY DEVICE SELECTOR U6A,

When U7A or U78 by

Microprocessor

either

4.3.3.&

U248 input

the

timer

on

the

output

produce U1

EPROM

is

U9,

DIVIDE

a flip-flop

11

of

the

RAM

BY 2 CIRCUIT U24B

which

flip-flop. U248 divides

portion ofRAM-IO-TIMER

frequency of

of

U34.

a low output they

on

their

U13 orthe

receives

inputs

LCD

the

U34

6.144

from

Assembly,

clock

U13.

busA8 thru A

output ofMicroprocessor

its

input

MHz

to

Microprocessor

U7,

U21A

are

doing

so

15.

to

aliowMicroprocessor

and

produces

as a result

The

low

output enables a particular

an

U1.

All

activities of

ofthe

addresses

U1

to

read

from orwrite

U1.

The

clock

frequency

output frequency of

U1

occur at

being

selected properly

memory

is

3.072

1.536

MHzon

to that

rates

device,

device.

MHz

on

9to

I

SUNAJR

LPA~9500

I

4.3.3.9 RAM-IOU13

contains a

which

is

The

RAM for future access selected

the proper relay

relays

providing the enables ALC/ACC ports

Assembly,

permits

reset and TIMER The while

4.3.3.10 RELAY

the

on

U1

for

the

Bite

portion

Real

permitting

RAM

driven

by

is

used

by

U1

for output operation. PortA

in

PA

assemblies'

to tell

U1

the

Microprocessor

in

conjunction

to act

Watchdog

Bit 1 which,

ofU13 is

Time Interrupt allows

U1

11MER

by

or

the Filter

U13

(Random

U24B.

Microprocessor

which

is

being

ModuleAS.

power

amplifier assemblies

drive capability, Overtemp

to

operate

the

Access

Board.

with

U1

accordingly

circuit,

like

employedtogenerate

to

process

DRIVERS

Bite

to

QUICK

Bit

U1

other

U14,

Memory),

U1

as

a temporary storage facility for information that needs to

acted

upon

(PAO-PA7)

Port B(PBO-PB7)

LPA-9500

Port C (PCO-PCS)

reading

each

FAULT

2,

is

used

to

keep

programming

U15

at

the four columns

key

stroke

RESET

as

part

the

track of how

three

10

ports

(has

input or output capabilities),

in

real

time.

The

10

Ports

(Input/Output Ports

provides

with

+48

Command

500

watts,

outputs

on

the

to resetthe

of the Microprocessor Board's self-diagnostic

Real

Time

much

code

between

the outputs VDC.

and

Keyboard

the

Also

the

sequential

to

determine

flip-flop

Interrupt

time

to

interrupts.

BAND

Bite

has

1 thru

latch signals

output

increase the

Assembly.

which isused

are

Bit 2

which

lows

which

section ofthe

transpired simply

BAND

Drive

Also,

8 information for driving

which

drive the

Enable

speed

of the blower

allows

on

Rows

key

is

being

output

Drive

to

relieveU1 oftiming

by

and aTIMER

be

A,

B,

C)

power

which

disab~

fan 1KW,

U1

to

self-test various

1-3

to the

Keyboard

depressed.

from

Port

C is the

Dump

control

routine.

roUtines.

counting interrupts

stored

are

all

supply

This

circuit.

The

purposeofthe

carrying

4.3.3.11 The

purpose of

code.

If

timer

U3B

properly.

4.3.3.12

The

purpose However, U11

functions devices. A

12

thru A

to

read

its

U12

is

written to

to

be

controlled

4.3.3.13

relay

capability

WATCHDOG

U1

is

INPUT/OUTPUT

the

U11

15

contents.

MEMORY

to

energize a relay.

the

watchdog

fails

to

function

reset,

preventing

of the

Input/Output

as

the

device

an<!1U2 are

and

RD.

U12

by

U1

with

which

1/0

The

has

drivers isto

CIRCUIT

properly,

DEVICE

Device

selector for

controlled

device

functions

the information contained on the

both

DEVICE

acceptahigh

Q1,

U2B,

circuit

is tomonitorthe actions of Microprocessor

then

itfrom

timing

out everytimea

SELECTOR

Device

input

Selector is similartothatofthe

Selector

all

by

the

accessed

as

does

and

SELECTOR

from

U3B

the

watchdog

U10C,

accesses input.,g,evices

101M

signal.

by

U11

places its

U11

except that it

output capability.

U10B,

U13

U10D,

1/0

mapped

and

U35

and

circuit

Real

U12

In

addition,

information

ADO

convert

will

time

Time

U11,

devices

functions

uses

thru

that

signal

out

Interrupt

U12

Memory

rather

as

U11

is

on

the signal

AD7

bus.

to

a low

with

sufficient

U1

as

it processes

and

reinitialize U

occursaslong

Device

the device selector for

controlled by

the.,6QOthru

U 1

Selecto rUSA,U7,U21A.

than

memory

WR.

The

OC

and

1.

as

U1 isprocessing

mapped

the

address signals

AD7

bus

device accessed by

U1

00

current-

programming

The

watchdog

devices.

all

output

allowing

permit a device

U1

This U3S as a RAM

4-10

device uses

the

is

present

address

or

as

since

lines A 12thru A15

an

1/0

device.

RAM

U13

requires treatment

to

select the output desired

eitherasa

memory

by

device or

Microprocessor

as

an

U1

input/output

to

control

U13

device.

either

ISUNAIRLPA-9500 I

4.3.3.14

The Board to necessary This circuit which

4.3.3.15

The

Microprocessor Memory

4.3.3.16

This

LCD

Assembly

4.3.3.17 WAIT

ADO-AD7

purPose

the

purpose

is

of the

~~

unless

LCD

Assembly

to

communicate

also

is

placed

LCD

of

Device

LCD

a two-gate circuit enabled bythis

via the

BUFFER

ADOthru

the signals are

permits

on

the

ADO

ADDRESS

U19

is

U1

wishes

Selector

ENABLE CIRCUIT

circuit,

ADO

thru

STATE

CIRCUIT

AD7BufferCircuit is

A2A2.

Microprocessor

GENERATOR

Containing

off

board,

thru

AD7

BUFFER

to

provide the

to

read

U7.

intended

Microprocessor

AD7

bus.

U2D,

necessary

minimizes

U1

lines.

U19

address

fr.om

or write

U6B,

U10A

to

provide

U4C,

U2E,

U6C.

U20E.

to

preventADOthruAD7 signals

either

to

write

to

a device

ADO

thru

AD7

on

the Microprocessor

the

conducted

to

read

information

signals

to

the

LCD.

the

proper device

U1

will either

U4D,

U4E,

AO

U5

from

and

U19

enable

read

U20F,

U32

on

the

and

radiated

the

Peripheral

A 1

to

the

is

enabled bythe

to

the

or write data

from

leaving

Peripheral

Board

RF

produced Board

LCD

Assembly

Signal

LCD

Assembly

or

commands

the

Microprocessor

Board

A3A2

~~,

by

the bus

and

the

A2A2.

SELECT

A2A2.

from

except

LCD

or

orto write

when

Signals.

Assembly

only

when

from

When

the

to

the

LCD

the

The

Wait

State

when

communicating

A2A2

requires

is a dual

35

4.3.3.18

The

produces

occurs. If a

1 to Microprocessor the

If

an

similar and rather

After either a QUICK

flip-flop device

ROY,

will

DRIVE

purpose

interrupt

reflected

through 4 to

protect

itself

LPA-9500

overcurrent

to

that

U28

interrupts

than

transient,

FAULT

hold

of the

fault

caused

reflected

Generator

with

moretimeto

which

U1

until

DUMP

Drive

signals

occurs,

the

power

from

the effects of the

U1

that a

in

BYPASS.

occurs,

RESET.

either

by a reflected

U1

notffying

the

fault

produces a wait the

LCD

Assembly

have

information

is

stimulated

the

LCD

Assembly

CONTROL

Dump

tothe Interrupt

U22A

amplifier

reflected

LPA-9500

or

This

signal

CIRCUIT

Control

pin 6 goes

assemblies.

fault

U22B,

fault. A Drive

U1

that

will

an

overcurrent

is

condition

initially

Circuit

Control

low

reflected

has

U23A,

an

overcurrent

go

to

used

A2A2..

written

to itor

by

has

an

02-05,

is

to

provide

Circuit

causing

This

fault.

occurred.

U23B,

or

Dump

BYPASS.

occurs,

to

reset

which

forces Microprocessor

The

Wait

State

read

from

signal

SELECT

opportunity

U22,

U23,

rapid

responsetocertain

U28,

U29

anytime a

U26A

and

causes

U24A

U22A,

each

In

addition, a

This allows

will

set.

is

issued

has

occurred.

Microprocessor

B,

U23A,

is

necessary

itthan

U1

normally

LCD.

A low

to

accept data or

U24A,

U27

U26A,

reflected

A-C

to

output a

power amplifier

high

on

U22A

U1

to

take

the appropriate

The

overcurrentfunction

to

the

affected

If the overcurrent

U1

instructs

Band

U24A.

U1

to

because

would

from

the generator

to

produce

U27

fault

faultor

high

assembly

pin 5 causes

power

condition

U13

to

U1

resets

delay

one

the

LCD

take.

Thegenerator

data.

conditions.

an

overcurrentfault

on

Drive

to

tum off

U28

action ofplacing

causes

amplifier

issue a signal

assembly(s)

is

these flip-flops

clock cycle

Assembly

on

U1

The

circuit

Dump

lines

its

input

to notify

an

activity

continuing

called

to

4-11

I

SUNAIR

LPA-9500 I

determine ifa fault actually does

be

set

again

flip-flop will

its

to initiate

band

4.3.3.19 BAND The

purpose of the

filter

band Interrupt Control Circuit will detect read equivalent

own

changes to protect the

has

been

on

bus

lines

band

bythefaultsignal

DRIVE

BUFFER

change

Band

selected

ADO

DUM

thru

exist. Ifthe

P.

This occurs

band

relays.

CIRCUIT

Buffer Circuit

in

AD7

on

Port A of

U30, U31,

is

the transceiver driving

it

and

via

U33.

RAM

fault

again

to provide a means

inform

When

U13

•

4.3.3.20 INTERRUPT CONTROL CIRCUIT The

purpose a reflected fault cause

4.3.3.21

of the Interrupt

has

of the interrupt.

KEYBOARD INPUT BUFFERS U16A-U16D,

Control

occurred, or

Circuit isto

when a band

condition isgenuine

notifying

during

U33

U1

.

U28,

notify

change

U1.

The

power

level

by

the

LPA-9500.

that a

band

sees

that a

U29

Microprocessor

has

occurred.

U18,

U20A-D

and

not

caused

DRIVE

changes to protect the

which

change

band

ENABLE

Microprocessor

When a band

has

change

U1

when U1

will

by

signal

occurred.

has

occurred,

an

overcurrent

stop

all activity

a transient, the respective

is

used

by

U1

if itwishes

Bypass

U1

change occurs,

The

relay

can

determine

band

U1

has

and

and during

which

U29

of the

information

will produce

occurred,

act

when

upon

is

an

the

The

purpose of the

key

of the 3 x 4

AD7lines.

4.3.3.22 KEYBOARD The

purpose ofthe of the twelve its

keyboard

pushed,

4.3.3.23 + 12V GENERATOR The

to interface the

4.3.3.24 VOLTAGE PRESENT INDICATORS The

of three voltages. of

acts accordingly.

purpose of the + 12V Generator is to produce the + 12V necessary for the

with

Auxiliary

Voltage Present Indicators

+5VDC,

CR10

Keyboard

keyboard

Keyboard

keys

on

the

scan

routine to determine

the + 12V

Power

Supply.

When indicates the state of +

Input Buffers

is

being

PUSHED

Pushed

front

band

CR8

the LED's

is

to

provide Microprocessor

pushed.

INTERRUPT GENERATOR

panel

keyboard

R36,

CR8

Signals

is

a zener diode

are

a series of three LED's

are

U1

reads

Column

Interrupt Generator

is

pushed. A high

which

key

is

being

supplied

CR9-CR11

illuminated, the voltage they represent

12VDC,

which

and

from

CR11

1 thru 4 of the

U4F,

is

to alert Microprocessor

on

pushed.

the transceiver.

regulates the

which

are

indicates

U1 a means

U16F,

U17A

RST6.5

U1,

when

+28

VDC

positioned

the

state of the

by

which

keyboard

interrupts

it determines

band

+28

on

is

correct.

via

U18

U1

immediately

U1 , causing

which

buffer circuits to permit

VDC

is

received at

to +

12

VDC.

the

board

to indicate

CR9

indicates the state

+28VDC.

it

can

detect which

on

the

when

U1

key

ADO

to enter is

being

them

R36

from

the

state

thru

one

4-12

4.4 BEIPS MODULE A4

I

SUNAIR

LPA-9500

I

14.4.1

Referto Figure5.g. This

module. main

Voltage for correct

04.

safe One

14.4.2

Refer

4.4.2.1

RF

assembly

The

power

sensing

each

pair of If

operating

R6

and

limits complete

+48VDC

to

Figure5.1

GENERAL

MODULE

AC

supply,

R11

in

case

CONTROL

contains

power

elements

output

RF

the bias voltage regulators for

relay.

is

also

transistors.

idle

current for

provide

of

an

amplifier

Module

current

SWITCHING

O.

which

is

a part of this

located

Control

on

Bias

each

sense

failure.

Assembly

POWER

ASSEMBLY

energized

module.

the

RF adjust

transistor

feedback

by

Power

potentionmeters

pair.

is

provided

SUPPLY

A4A

11

each

of the

two

pairs of amplifier transistors

the microprocessor circuitry

Amplifier

Actual

to

U1

are

used

by

U1

R1 0 and

idle current issupplied bypower

and

U2.

respectively.

for

each

RF

R15

Module

A4A21

to

control

and

U2

to

are

used

to

limit the

Assembly

in

a single If

input to the module's

govem

to

initially

transistors

bias

supply

A4.

the

bias

establish

voltage

03

current

the

and

to

The

+48

VDC

size.

TheAC

at

50

kHz

(Inverter components to

the

load

provide increase or is

provided

to

120%ofthe

supply

will

not

4.4.2.2 The

AC rectifier

4.4.2.3 Transformer

altemately. of 01 +

175VDC

INPUT

11

OVAC

line.

Surgistors

CR1

INVERTER

and

02

to

Switching

input isconverted

via

an

decrease

through

nominal exceed

SECTION

to

220VAC

rectifies the

T1

receives a pulse-width

CR4-7.

is

applied

-175VDC

Power

Section).

output transformer

the regulator

in

size.

a current limit circuit

output current

a preset

is

routed

R1

and

R2limit the

AC

SECTION

CR8-11 , and

to

the

at a

50

Supply to

high

voltage

The

DC

with

an

depending

(Current

level

(Overvoltage

through

input

voltage.

C15-C16

primary

kHz

side

rate.

is of the

driven

indication asto

pulse-width

DC

(Input

output voltage is

by

the Inverter

on

line

and

load

which

limits

the

Umiting). Overvoltage

Protection).

RFI

coil

L 1

in

rush

current

Capacitors

modulated

provide

ofT2

negative

in

the

signal

modulating

Section).

whether

conditions

maximum

to

prevent

when

C5-C8

from

form

of a

The

provided

Section

power

bias

from

(Output Section).

the pulse-width

(Control

amount of current available

power

is

provide

the

control

from

pulse-width

type,

employing

DC

drives a

associated

modulation

Section).

protection isprovided

supply

first

the inverter

01

induced

applied

section

and 02for faster tum-off.

modulated

high

half-bridge

rectification

Sense

Short circuit

noise

to

the

power

section

which

tums

waveform

efficiency

inverter

leads

control

with

voltage

from

to insure

from

reaching

supply.

:t175VDC.

on

swinging

and

small

operating

and

filtering

connected

must

protection

the

supply

the

power

Bridge

01

and

The

action

from

the

02

4-13

ISUNAIR LPA·9500 I

4.4.2.4 CONTROL SECTION

The

main

component ofthe

and

makes

the

voltage adjust

output of The

generatedbyT2windingthroughCR22,CR23andfilteredbyC30. Thepush-pulicircuitderivedfrom04,05,T1 winding,

RC

the withinU1.

4.4.2.5 OUTPUT SECTION

The

action ofpulse-width voltage filtered by

left

open.

load"

the

necessary

pot

the

pulse-width

two

Signals CR21

time constant for a

even

condition.

provides the

though

L2.

L3

R32

is

are

and

used

the peak-to-peakvalue

correction

R35

is

modulator

used

to

100

modulation

C36

thru

for

preload,

control

section

moved.

drive transistors Q4

necessary

kHz

clock

C41.

minimum

is regulator

to the pulse-width

(2)

the

load

may

be

seen

control

which

through

C43,

T2

remains

C44

load

U1.

modulator.

current

signal

can

providesameans

and

to insure

has

as

two

signals

and

05. A

required

be

seen

unchanged.

R33.

R34

proper

changed,

at U

1 monitors the output voltage of the

This correction

(3)

the

AC

1800

out of

phase

20-30

volt

bias

to drive the Invertor

1.

3.

This clock is intemally divided

of increasing

The

secondary

are

provided

operation of the pulse-width modulator ata

as

will

be

line voltage

at

U1

supply for the

Section.

or

decreasing

voltage

protection if the sense leads

is

rectified

power

necessary

has

changed.

12

and

control

R9

and

C19

secondary

by

U1

CR24

when

section

supply

(1)

The

13. is

provide

by

two

output

and

are "no

4.4.2.6 CURRENT LIMITING

Current T3 across the primary ofT3. across programmed output of

4.4.2.7 OVERVOLTAGE PROTECTION

When

With This

output

limiting isaccomplished

is

in

series

with

T2

and

hasasingle-tum

T3

will

cause

a voltage to be generated

Hence,

R26

is

rectified

with

R24

current.

nominal.

the output voltage increases over

CR20

condition

voltage

When

even

with

on

CR12

will cause to collapse

T3

primary

and

filtered

(current

Q3

is

on, itwill

a further increase

will tum

on

the

pulse-width

to

nearly

by

determining

current will

by

CR18.

limit adjust) to tum

affect the

120%

and

a voltage of

zero

when acertain

primary

across CR19

pulse-width

in

load

of the

modulator to

volts.

CR12

side.

The

R26

be

proportional

and

on 03when

(i.e.,

a direct short across the output

nominal

.2

volts

will

go

will

14.4.3 POWER AMPLIFIER ASSEMBLY A4A31

level

of inverter

secondary

proportional to the amount of current going

to

output

C27.

This

the

power supply

modulator,

value,

be

to absolute

retum

seen

to

"off"

such

it

exceeds on

minimum

section

side ofT3

load

voltage,

as

to limit the output currentto

4 of

condition

current

has

100tums.

current.

proportional to

is

the

U1

pulse-width

The voltage generated

loaded

by

to

of

the power

breakdown

with

respect to

removing

has

R26

load

120%

voltage of

and

the

been

of the

will

reached.

connected

through

current.

nominal

120%

supply.

CR20.

5 of

cause

AC

input.

is

U1.

the

Refer

The approximate

A

PA

power

4-14

to

Figures

two

Power

13

Assembly splitter circuit

4.4

and

5.11.

Amplifier

dB

power

is

composed oftwo

and

Assemblies

gain

an

output

ofthe

power

A4A3

LPA-9500. push-pull

combiner

contain

Refer

class

AB

circuit.

the

to

Figure

power

solid

amplifiers

Refer

state power amplifiers

4.4

for the

block

diagram of

which

are

interconnected

to

the

schematic diagram

which

one

Figure

produce

PA

Assembly.

by

5.11.

an

input

Notice

the

ISUNAIR LPA-9500 I

that the amplifier

the upper amplifier (02-03) TheinputSpiitterT1 isahybridtransformercircuitwhichsplitsthe500hmmoduleinputintotw01000hmoutputs

to

drive the

any

interaction a 1 ooohm remaining

absorb

Referring

T3.

impedance

over

Each

the bias

Output the T5

T2combinesthetwo100ohmamplifieroutputsintoasingle500hmmoduleoutputwhichdeliversanominaloutput power presented a load amplifier is dump

part of the input power that

to the

Computer

the

1.S

push-pull

bias

supply

transformer T7

high

current

converts

of 300

resistor

circuits

two

push-pull

between impedance push-pull

top

amplifier

designed

and,

in

conjunction

to

30

MHz

stage

board

board.

center

the

push-pull

watts.

impedance

delivering

R40,

and

above

will

amplifiers.

the amplifier

regardless

stage,

should

02,03

RCL

networks R with

frequency

is

biased

for

matches

tap

This

more

separately. Temperature

bias

temperature

formed bythe

output

output combiner

of

output power

the other half

and

below the splitter

apply equally

The

inputs.

of the

one amplifier

would

the stage input impedance is

R34,

range.

the stage output impedance to a 100

100

ohms,

appears

to

circuit

Assuming a 50

other

amplifier's

normally

11

thru

R35

and

tracking.

shield

conductors of

ohm

unbalanced

has

regardless

than

the

as

and

combiner

the lower amplifier (04·05).

has

isolation

input

fail.

In

this failure

go

to

the failed amplifier.

R20,

C10,

feedback

..

sensing

Controls

configuration

properties similar

of the

other,

half of

additional

are

identical.

between ohm

impedance.

C12,

from

for

to

the

condition ofthe

the

module

the

two

driver,

matched

outputtransformerT7, flatten the

diodes

quiescent

100

coaxial

to

power

each This

condition,

to 1

C13,

and

CRS,

ohms.

windings suitable

the

input

imbalance

output

Therefore,

100

ohm

amplifier input is

preserves

the splitter dump resistors

00

ohms bythe inputtransformer

LS,

L 1 0

CR7

provide thermal

(idling)

The

other

power.

current are provided

4SV

collector bias

on

T7.

for

driving the

splitter.

output.

is

dissipated

the description of

outputs

the

establish

The

Each

which

presented

performanceofthe

the

balun

ouput

amplifier

In

the

event

in

prevents

with

RS-RS

stage

input

gain

variation

feedback

is

applied

transformer

combiner.

thecombiner

on

output

that

one

to

the

to

is

CR2

is a power

removes

is

applied

forward Input

resistive

BITE Thermistor

positive function of several

temperature fault

4.S

Referto Figure5.12. The

Filter

and a plug-in

drive

from

to

the

2 to

go

high,

biased

and

output

voltage

sample

and anegative

RT1

thousand

FILTER MOPULE

Module

consists

wattmeter

diode

the

power

diode

saturating

by

current

BITE

samples

dividers

is

mounted

heatsink

ohms

is

generated

of a

assembly.

which

shorts the

amplifiers

thru

R5.

When

the

dump

from

unregulated 5 volts are

developed

deliver

at

RF

voltage for

to the heatsink

temperature,

85°C.

This

when

AS

fan

cooled

module

during

Microprocessor

transistor 01.

in

samples

the

to the diodes

the

output

close

rising

change

resistance

shielded

input

to

ground

periods ofuncertain

A3A3U1

01's

collector pulls the

thru

R9, T4,

CR1,

CR3

and

which

BITE

sample.

to

the

PA

transistors.

from a nominal

in

resistance is

exceeds

enclosure, a MOTHERBOARD,

the

when

certain fault conditions loading. determines that a fault exists, it

and

T1,

associated

develop a positive output voltage for

resistance

monitored

preset threshold.

Normally,

cathode

shunting

circuitry.

The

resistance

of 1 00

by

Microprocessor

any

ohms

eight

40

volts of

of

CR210w.

input

Signals

Frequency

of the thermistor

at

room

temperature

A3A3U1

plug-in

filter

exist.

This

reverse

CR2

to

compensated

assemblies,

causes

is

then

ground.

the

input

and

bias

J3

is

a

to

a

4-15

I

SUNAIR

LPA.09500

I

14.5.1 PLUG-IN FILTER MODULES A5A 1 THRU

The

band filters consist of three sections

The

bands

13.5

to

20

are divided

MHz,

and

as

20

follows:

to

30

MHz.

each

and

cover a useful frequency

1.6

to 2 MHz,

Harmonic output from the filter

2 to 3

MHz,

14.5.2 PLUG-IN WATTMETER MODULEA5A91

The Wattmeter

reflected bypassfortheantenna to the transceiverwhen in

the

500W A3A3U1. manually

The directional wattmeter consists of current transformer the rf is forward Similarly. the

The VHF filter, consisting

adequately attenuated. regardles of the filter

combined

rf

Board

power,

the

T/R

mode.

The

or

This

Bypass

by

the microprocessor.

with

power.

This

reflected

consists of a directional wattmeter

relay

and

bypass

relay

may bedisabled

relay

is energized whenever the linear amplifier

a voltage sample

signal

is

processed

power

is

combined

of

C69-C72

relays,

(from

and

a VHFfilter.

in

receive

by

C67

on

the Peripheral Board

at

CR4

L29-l31, provides assurance that

band

mode,

K18,

the Bypass

and

csa)

to provide reflected

chosen.

T1

A5Asi

span

of one-half octave

3 to 4

MHz, 4 to 6 MHz,

modules

which

supplies signals proportional to forward

The

T/R

relay,

and

inserts

the

relay,

which

has

been

and

associated components. A current sample

at

CR5

to provide a voltage output proportional to

A3A2

and

displayed

power

voltage data for meter display.

6 to 9

is

at least

K17

and

K19,

power

amplifier

is

controlled

placed

on

all

harmonics over

MHz,

75

dB

provides

when

by

Microprocessor

in

bypass

the front panel

maximum.

9 to 13.5

below

PEP.

a straight

transmitting

mode,

30

MHz

MHz,

and

either

of

meter.

are

14.5.3 MOTHERBOARD ASSEMBLY ASA 10 I

The

MOTHERBOARD

in

assemblies. The

are

networks rf

Signal

with

the active filter.

a part of this

through

4.6 OUTPUT POWER COMBINER

Refer

to

Figure

5.13.

The

Output purpose operation, the resistors provide the

switches the amplifier

is

to

Power

Combiner consists

combine the outputs ofthe

batancing

is attached to the enclosure

band

switching assembly.

the

filter

and

out to the wattmeter

of

two

resistors

remaining

to

bypass.

diSSipate a minimal

module

With

and

relays.

K1

thru

Band

switching relays located

board.

A6

transformers

rf

modules,

an

acceptable

T1.

summing

amount of power.

4.7 INPUT POWER SPLITTER ASSEMBLY

Refer

to

Figure

5.14.

The

Input

Power

R3

and isolation network

R4.

The

between

to

compensate

Splitter Assembly

purpose

of this

each.

Under

for slight imbalances

conSists

network

normal

of transformers istodividethe inputpowerfrom operating conditions, only a very

in

rf module input characteristics. If

supplies all rf

K16,

PA

All

unused filters

and

T2

load

until

A7

T1,

and

control

Output

them

T2,

Power

at

either

are

plus

balancing

to

provide the required 500

However, ifa module fails, the balancing

the microprocessor

T3,

T 4

and

the

transceiver

small

amount of power

interconnect

Monitor,

end

terminated

resistors

T5

and

of the selected filter direct the

board

and

balancing resistors

into

four

an

rf

module input should short

for

the nine plug-

band

line decoupling

to

prevent interaction

R1, R2,

R3

watts.

detects the fault

equal

parts,

is

dissipated

and

R4.

In

normal

R1, R2,

providing

by

Its

and

this

4-16

or

open

or a module

power.

4.&

FRONT PANELA&

The

Front

Panel

and

the

FAULT

be

removed,

Assembly

and

POWER

A8

contains

lamps.

the

balancing

the

resistor

power

corresponding

ON/OFF

circuit breaker

4.9 REAR PANEL CONNECTOR ASSEMBLY A9

Refer

to

Figure

5.15.

The

Rear

Panel

and

control

Connector

lines

going

Assembly

into

and

out of

contains

the

LPA-9500.

the

power

and

control

4.10 AUXIUARY POWER SUPPLYA10

Refer

to

Figure

5.16.

to

that

A8CB1,

connectors

module

the

and

provides

I

SUNAIR

will

absorb

overtemperature

rffiltering

LPA-95OQ

excessive input

on

fan

all

I

ABB1

power

The

Auxiliary

amplifier for

microprocessor

it

supplies consists regulated +5

VDC modulesfor K3

prevents Relay threshold

4.11

Reterto Figure5.H.

The

purpose

Power

relays

circuitry.

the

AC

voltage

of rectifier bridge

supply

voltage

K1

switches

as

consists ofrectifier bridge

is

taken

use

inthe

bias

from

the

determined

DUAL DUMMY LOAP

of t

his

Supply

(+28VDC),

is aconventional

The

source

CR2, CR3,

from

bias

supplies.

being

applied tothe

blowers

by

Microprocessor

assembly

rf

power

amplifier"bias

power

transformer not only supplies

for

high

speed

CR4

CR6

the input to the

Relay

K2

rfamplifier

from

low

speed

A11

is

to

terminate

linear

and

CR5. and

regulator.

is

energized

to

high

A3A3U1.

the two

regulated

(unregulated

low

speed

and

regulator

switched

wheneverthe

modules

speed

unused

supply

designed

+5VDC).

low

blower

U1

U2

with

its

through

wheneverthe power

whenever

outputs of the Input Splitter

to

provide

and

regulated

voltage

with

the

to

the +28Vand

operation.

associated

K2

and

KEYLINEACCESSORY

heatsink

The

components.

sent

amplifier

temperatures

voltages

voltage

+28VDC components.

to

each ofthe

is

in

the

A7.

required

+5V

regulated

Theunregulated

within

(+5VDC)

regulators,

supply

The

+5VDC

four rf amplifier

is

closed. BYPASS exceed

mode.

a preset

the

for

aU

but

Relay

4-17

I

SUNAIR

LPA·9500

I

ITHIS PAGE INTENTIONALLY LEFT

BLANK.

I

4-18

SECTION V

MAIN'rENANCE AND REPAIR

ISUNAIR LPA-9500 I

WARNING:

5.1

pREVENTIVE MAINTENANCE

In

the normal service life of any piece of equipment, faults

may

be

repairs technician should familiarize himself/herself with the circuitry occurrence of trouble. Refer

When technicians, supplied

repairs are necessary, it

15.1.1

The

LPA-9500 design calls for periodic cleaning of the air filter

and

clean

filter must

Cleaning

9500is

inspections. If during the three (PIN

8066002301).

carried out

PERIODIC INSPECTIONS 1

by

vacuuming or

be

completely dry before reinstallation).

of

the

installed

115/230VACAPPEARSONCIRCUITBREAKERANDCONNECTORSTRIP. 115/230VACAPPEARSON +48V

I

NOTE: I All

in

a reasonably short time, a logical testing routine must

to

with

suitable tools

Air

Filter. Inspect

in acontrolled

Figures applicable

Figure

forced

5.1

for major assembly locations.

is

recommended that this servicing be done whenever possible by competent

and

test equipment.

air.

The air filter

and

clean the air filter a minimum of every three

environment.

(3)

month

Unusually

inspection the filter shows signs of deterioration, replace the air filter

to

Section V appear following paragraph

and

should

po

severe

POWER

breakdowns will develop.

and

be

Not Use

SUPPLY TERMINAL

be

the physical layout of the equipment prior to the

on

the front

periodically cleaned

Any

environmental conditions

panel

Form

asembly. Remove the air filter

with

of

Petroleum Based Fluid

STRIP.

5.5.S.

In

order that the necessary

followed. The maintenance

soap

and

fresh water (air

(3)

months

will

require

when

morefrequent

the

for

LPA-

I

No

lubrication of.any

NOTE:

kind

I

In

the case of LPA-95oo faults due to overtemperature, always insure

that the air filter

is

required

in

the

5.2 CORRECTIVE MAINTENANCE

15.2.1

The following list of equipment or its equivalent

TEST EQUIPMENT REQUIRED 1

a)

Transceiver/Exciter

b}

Wattmeter,

c}

Coaxial

d}

RF

VTVM, HP-41

Bird

Dummy

Thruline

Load,

2500

OC,

Oty.

Model

Watt,

1

43,

Oty.

Bird

is

clean

LPA-9500.

is

required

1

No.

8890-300,

before progressing

to perform the specified tests

Oty.

3

with

further repair.

in

this section.

5-1

ISUNAIR LPA-9500 I

Coaxial

e)

Multimeter,

~

Oscilloscope,

g)

h)

Wattmeter Audio Oscillator,

Q

Artificial Antenna

D

Audio

k)

I)

Coaxial

15.2.2

a)

1011130009

b)

Connector

c)

0579240002,

Tee,

HP-11

042A,

Simpson

Tektronix

Elements,

HP-2OQCD

Injection

Dummy

Test

Load,

Cable,

CONNECTORS

Connector,

Kit,

Sunair

Cable,

37

aty. 1

260,

aty. 1

No.

465B,

1000W

see

150

Watt,

AND

Power,

8105000296

Cond.

aty. 1

and

100W

Figure

Bird

5.3

Model

CABLES

39

Round

8135,

aty.2

REQUIREDI

(to

9000

(see

section

1.4

Series,

for

contents)

P2)

d)

Power

e)

Miscellaneous

15.2.3

Primary be

capable

Before Applying Power.

15.2.4 TEST

Set

up

Cable

Assembly,

coaxial

RG-58NU for Input

RG-8NU for Output

PRIMARY

power

of supplying

should

POWER

be

supplied

230

CONDITIONS

LPA-9500

and

required

Sunair

cables:

INPUT

through a

VAC

at

20

See

Figures 2.7

I

test equipment

5.3 ALIGNMENT PROCEPURES

The

LPA-9500

used

only

with

an

exciter other

the alignment

is

tested

by

a competent

procedures

and

aligned

t~hnician

than

the

one itwas

a failure

atthefactory before shipment. The following alignment procedures should

after repair

originally

occurs,

8066002297

I

switch

amps

or

115

and

2.8.

as

has

been

aligned

refer

to

the

box

with

either

VAC

at

40

shown

in

Figure

accomplished

to,

it

may

Fault Isolation

fuses

amps.

5.2.

be

necessary

procedure

or circuit breaker protection. It should

Insure Proper Voltage Customizing

to

the

unit.

If the LPA-95oo

to

resetthe power

applicable

to

is

to

levels. Ifduring

the

failure.

be

utilized

These

5-2

alignment

procedures

must befollowed intheir entirety

to beassured ofthe

correct alignment of

the

LPA-9500.

15.3.1 PRELIMINARY

SUNAIR LPA-9500

a) Connect

POWER b}

Remove

c}

Connect coaxial cables

LPA-9500

J3.

Be

sure 9000 Series equipment

top cover of

to 9000 Series equipment at CONTROL

15.3.2 POWER UP I

a)

Set

circuit breaker

b}

Tum

ON

9000

c}

The

green

POWER

Microprocessor

d)

On

Peripheral should meter should

read:

read

'SYSTEM OPERATIONAL

on

Series Exciter/Transceiver.

lamp

Board

A3A3

Board

zero.

LPA-95oo.

to

RF

OUTPUT

LPA-9500

on

the LPA-9500 front

should illuminate.

A3A2

adjust

to

ON.

R164

is

OFF.

J1

and

until the

METER:

RF

INPUT J2 of

panel

should

LCD

FWD

CABLE

Assembly

PWR

J5

and

appropriate power source at

LPA-9500.

illuminate. The three power supply LED's

A2A2

has

its

best contrast. The display

LVL:

500W'.

The LPA-9500frontpanel

AC

on

15.3.3 KEYBOARD I

a)

Press

pushbuttons

the function selected. b}

Press

push

buttons

the function selected. The meter c}

Press

the

REFLD

meter

d)

Press

zero. e}

Depress

display

should

the

PWR

should

read

FWD

show 500

IC,

and

The

meter

VC,

and

pushbutton.

zero. pushbutton.

LVL

pushbutton.

Watts.

IC2 in

sequence. The display should change

should

VC2 in

should

The

display should showthatthe meter indicates

The

15.3.4 POWER ADJUSTMENT I

a) Select 1.6050

adjust

R32

and

MHz

R33

and

until the

set the exciter

HP-41

OC

to

continue to

sequence. The display should change

indicate

display should change

display should show a 'BYPASS'. Depress

MODE

voltmeter indicates

48V.

to

CW

read

zero.

and

158

to

show that the meter indicates

depress

VRMS.

CW

KEY.

show that the meter indicates

FWD.

On

The

meter

PWR

LVL

Peripheral

REFLD.

should

again.

Board

The

read

The

A3A2

b}

While holding the

indicates

500

watts.

CW

On

KEY

the

keyboard

down,

adjust

R61

depress the

on

the Peripheral

REFLD

key,

Board

which

A3A2

causes

until the LPA-9500

the front

panel

meter to indicate

panel

meter

5-3

I

SUNAIR

LPA·9500 I

reflected indication Depress

c) limits of

power.

on

the

Select the followingfrequencies individually

450

the

CW

to

550

On

panel

key,

watts

the

meter.

and

RF

Wattmeter

adjust

on

each

On

the

C68

for

frequency

Assembly

keyboard,

maximum

on

as

displayed

1.9999MHz

2.0000

2.9999

3.0000

3.9999

4.0000

5.9999

6.0000

8.9999

9.0000

13.4999

13.5000

19.5999MHz

20.5000

29.9999

ASAS

in

depress the

indication

the exciter

on

MHz MHz

MHz MHz MHz MHz MHz MHz MHz

MHz MHz

MHz

the Filter Module

FWD

key.

Set

on

panel

meter.

and

observe that the

the front

panel

meter.

A5,

adjust

C62

for

minimum

the exciter to 29.9999

CW

power

remains

MHz.

within

d)

With

Observe

15.3.5

a)

Depress

microphone b)

On

15.3.6

a)

Reverse

pushbutton b)

Set

of

125

exciter frequency at

panel

meter

and

AM

POWER

PWR

LVL

PTT

button.

Peripheral

VSWR

exciter

watts.

Board

ADJUSTMENT I

the

LPA-9500

until the

MODE

LPA-9500

to

29.9999

note

that

I

pushbutton

A3A2

adjust

RF

INPUT

is

CWo

Depress

MHz,

IC

is

until

500

R42

(J2)

in

BYPASS.

CW

depress the

not

more

watt

power

and

R43

and

RF

Depress

KEY

and

CW

than

17

level

until H

P-41

OUTPUT

REFL

adjust

Key.

Select

amperes.

is

selected.

OC

indicates

(J1)

cables

pushbutton.

R59

on

Retum

Set

the

Peripheral

meter

function

meter function to

exciter

on

100

VRMS.

rear of

MODE

unit.

Board

IC1 and

to

Depress

for a meter

AM

IC:!

FWD.

and

PWR

in

tum.

depress

LVL

reading

54

c)

Return

with d)

Depress the

Peripheral e)

Connect a third

9500

1)

Tum the 9000 Series equipment

RF

INPUT

first. Set power to

Board

just fails to display a

and

PWR

LVL

until it just begins to decrease the indication

dummy

RF

SOO

pushbutton

load

VSWR

•

5.4 FAULT MESSAGES

OUTPUT

watts.

cables to proper· J-connector. Connect a

Set 9000 equipment to

in

parallel

FAULT

OFF.

until the

with

when

SOO

the first

keyed.

watt

level

two.

USB

Mode

is selected.

on

Adjust

the

RSS

and

Key

forward

on

the Peripheral

END OF ALIGNMENT PROCEDURES

SUNAIR

second

frequency to 2.000

the

power

radio

meter.

dummy

and

adjust

Unkey

Board

LPA-9500

load

MHz.

R28

the

until the

in

parallel

on

radio.

the

LPA-

Failures attention to the areas

MUL to display the fault all fault messages

Table messages with (1 specific

in

the

LPA-9500

TIPLE..PRESS·'

S.1

defines

which

through

2)

or Filter

number.

cause

fault messages to bedisplayed

in

which

failures have occurred. If more than one fault

will

be

displayed. messages. which

the

fault

the symbol'" appears, followed

Band

A different fault

describe existing malfunctions

messages

(1

through

When

and

indicates the areas

8).

For the

this

message

purpose

5.5 FAULT ISOLADON PROCEDURES

5.5.1 RF/PS MODULE A4

The

RF/PS Power and

bench

protection circuits. If the

VDC

5.5.1.1

Module

Supply

Power

A4A2,

tested,

SupplyM.U&Ibe

DIAGNOSTIC

is

a self-contained module consisting of the

and

the

Power

Amplifier Assembly

or tests

may

be performed

RF/PS

PROCEDURE

Module

provided.

in

is

removed

Failure to

the

on

the

LCD

Display

happens,

LPA-9500

for testing. forced air cooling of the Power Amplifier

provide

depress the asterisk

will

be displayed

have

been

in

which

by a number,

of discussion, the letter Xwill

Module

A4A3.

The

provided the faults

this

cooling

each

displayed.

the problems

indicate either a particular

Control Assembly

RF/PS

may

result

A2A2.

(*)

time

are

Module

in

These

messages

occurs,

pushbutton

the

do

failure of the powertransistors.

the

message

on

button

is

depressed

most

likely to befound.

RF/PS

be used

may

not activate the

in

place of anyone

A4A

be

removed

the

Module

1.

the

asa

LPA-9S00

direct

'Fault:

keyboard

until

The

A4

+48VDC

whole

and

+48

a)

ConnectAC power of proper voltage

b)

Connect

c)

Connect +

d)

Connect

capacity. e)

Utilize Table

+28

VDC

12

VDC

A4A3J2

S.2

to A4A 1 J4 between

through a

to

perform

A4J1

Bird

testing.

(11S

2,

with

pin 1 (positive)

Thru

Line

or

230

VAC)

and

frequency

power supply negative to

and

A4A

1J4

Wattmeter to a

SO

ohm

coaxial

to

A4A1JS

ground.

3 (negative).

resistor of at least

pins 1

and

2.

SOOwatt

power

ISUNAIRLPA·9500 I

15.5.2

See Table

15.5.3

5.5.3.1 FAULT,

If a Fault

a}

Remove

•

b)

With

no

If Wattmeter

c) Ifcontinuity If a short circuit

bridging of the

d)

Remove

PERIPHERAL

S.3.

FILTER

exists

exciter

continuity

MODULE

ALL

in

all

bands,

exciter

Assembly

connections

and

unkeyed,

is

indicated,

exists,

is

indicated,

RF

circuit.

BOARD

A3A21

A51

BANDS

proceed

antenna connections

measure

check

ASA9.

measure

check

Check

from

as

for continuity

ASK17

resistance

capaCitors

for intemal

A5J3

and

follows:

from

and

from

ASA9C69,

shorts

A5J4

rear

between

ASK19

antenna

in

on

the front of

panel.

exciter

contacts

connector

C70,

ASK17

the

and

check

J1

to

C71 , C72

and

ASK19.

AS

module.

antenna connectors .

for

open

connections

ground.

for

The

shorted

resistance

components.

on

the

RF

should behigh.

Check

for

e)

Select

SOOW

or 1kW

~

Check

for continuity

Ifno continuity

connection

g)

If continuity

h) Ifall inspect for

Q If

coupler

5.5.3.2 FAULT, ONE BAND

a}

b) c)

measurements

still

and

Remove Select defective Measure

exists,

between

exists,

burned

no

defect

antenna

connections

for continuity

power

between

check

A5J3

and

check

fail to indicate a defect,

or

discolored

appears,

system.

from

band

in

between

level

and

A5J3

and

circuits

for short circuit

the

exciter

and

ASA1OE9.

components. antenna

ASJ3

and

A5J2.

and

key

ASJ2

key

exciter.

ASJ2

coax

between

from

tum

system

exciter.

and

A5J3.

of

the

antenna

power

may

Select

AS

module.

ASA10E21AandASA1OJ22

connection

off,

be

at

fault.

SOOW

and

or 1

to

remove

Refer

to technical

kW

power

ground. RF

Wattmeter Assembly

level.

T,

manuals

U,

16and

for the

17

and

ASA9

and

antenna

If

no

continuity

Check

for

open

is

measured,

circuits

check

appropriate

on

the

filter for the defective

relays

band.

ASA1OK1

thru

K8

and

ASA1OK9

thru

K16.

d)

If continuity exists,

measure

for short circuit to

ground.

I

SUNAIR

LPA-9500 I

If a short circuit

e)

Examine

exists.

the defective

check

capacitors

band

module

15.5.4 OUTPUT COMBINER A61

Using

FigureS.13

and

continuity through the

use.

refer

to the following

improper

connections should

of

1 0.0 of the resistors.

impedance

be

S2±8 ohms

MHz.

impedance.

15.5.5 INPUT SPLITTER

Comments

except

for

power

and amultimeter.

into

are

terminated

with a

Impedance

Variations

applying

to

the Output Combiner A6 also

handling capability.

check

coaxial

as a means

one ormore

will bemeasured

cables.

with

SO

ohm

phase

angle of± 1 a

in

impedance will

connectors

A71

on

defective

for

burned

for

opens

OPTION: If a vector

of

board

load

resistors.

with

a vector

band

or discolored components

and

check

when

the

degrees.

impedance

be

caused

apply

module.

shorts

on

the

Output

impedance

out.

Faults

in

the Output Combiner

others

are

properly terminated.lfany two ofthe three

the impedance

This impedance should

by

open

to the Input Splitter

measured

meter displaying magnitude

or shorted coaxial cables or

and

replace

Combiner.

meter isavailablefortroubleshooting

at the

be

as

these

as

Check

for

will

remaining

measured

and

devices

necessary.

visual

damage

show

up

as

connector

ata frequency

phase

angle

balanCing

are identical

an

15.5.6 MICROPROCESSOR BOARD

Becauseofthetransient nature ofsignals existing is

unduly Forthese with a known

expensive

reasons. itis

good

board.

to

have

in afield

recommended

Repair

service

of this

facility.

that iffault isfound

board

5.6 PISASSEMBLY INSTRUCTIONS

a)

TOP

COVER:

b)

BOTTOM

c)

FILTER

d)

FILTER

time.

RF/PS

zeus

Disconnect

MODULE

screws.

a

Loosen 4 zeus

e) 2

MODULE

Loosen 2 zeus

COVER:

ribbon

screws.

A4:

Uft

up

and

screws.

Loosen 2 zeus

COVER:

AS:

With

unit upright,

cable atJS. Disconnect 2

Uft out

With

out

and

unit

to

remove 2 RF

screws.

Loosen 4 zeus

up.

upright,

disconnect3

A3A~

on

this

board,

In

addition,

to bethis

must

be

accomplished

screws,

remove

connectors

lift out

A3A2

RF

connectors at

power

trouble-shooting

a particular

board,

the

and

up.

and

A3A3

assemblies

J3

and

control

at

J1

and

J2

requires

knowledge

board

must

at

depot or factory

by

and

J4.

Disconnect 2

connectors

on

bottom

of

test equipment

of the

software

be

removed

level.

pulling straight

atJ3,

module.

J4

and

fan

and

which

is

required.

replaced

up,

one at

connectors.

JS.

Loosen

I

NOTE: I Removal

end

modules.

the

module

are interchangeable

is

easiest if center

Modules are

to the left

when

between

module numbered 1 thru

facing

is

removed

the front of the

modules.

first before

4 with number 1

unit.

Also,

removing

RF

being

cables

5-7

I

SUNAIR

~

connectors

g)

3

screws.

h) 3

zeus

LPA·9500

POWER

AUXILIARY

CONTROL

screws

AMPLIFIER

at

P1.

Lift

up

inside

I

P2.

ribbon

POWER

and

out.

PANEL

front

ASSEMBLY

cable

SUPPLY A10: Remove 2 connectors

MODULEA2:

panel.

Pull

A4A3:

at

P3

and 2 screws.

With

With unit

module

To

unit

at

upright.

free

remove

upright.

J1

and

remove

from

front

the

To

open

remove

J2.

A4A3

power

the

panel.

from

supply

the

A3A2

A3A2, Remove

the

A4

loosen 2 zeus

and

A3A3

and

ribbon

Module.

AS

cables at J 1

remove 2 crimp

screws.

assemblies.

Remove

and

Loosen

J2.

ij FRONTPANELAIRFILTER:

instructions.

Loosen 2zeus

fasteners,

filter

will

fall

free.

Seeparagraph5.1.1 for

cleaning

..

I

SUNAIR

LPA-9500

I

A2A2

A2A1

A2M1

Control Panel Module A2

A8B1

A8B2

(A8B2

is

not installed in the

Front Panel with Control Panel Module

LPA~9500).

A2

and Filter Module Removed.

A8CB1

A8DS2

A8DS1

Figure

5.1

(Sheet 1/8) Major Assembly Locations.

SUNAIR LPA-9500

•

A5A6

ASA4

&10

+28V

Top

Covers

Figure

CRll

Removed

5.1

(Sheet

with

Peripheral Board, Sunair

2/8)

Major Assembly Locations.

8066082096.

I

SUNAIRLPA-9SOO

R32

ASC6Z

A5C68

R33

R61

Top

Covers Removed with Peripheral Board, Sunair PIN 8066082096.

A3A2

---AlA3

Figure

5.1

(Sheet 3/8) Major Assembly Locations.

5-11

ISUNAIR LPA-9500 I

(PA #3 and PA #4 are not installed

in

the LPA-9500).

•

5-12

AlAI

Top View with

Figure

5.1

(Sheet

A3A2.,

A3A3, A5, Removed.

4/8)

Major Assembly Locations.

•

SUNAIR

LPA·9500

(PA #3 and PA #4 are not installed

in

the LPA-9500).

Top View with A3A2, A3A3,

Figure

5.1

(Sheet 5/8) Major Assembly Locations.

AS

Removed and A4#3 Pulled Out.

5-13

I

SUNAJR

LPA-9500

5-14

Top View with

Figure

5.1

(Sheet 6/8) Major Assembly Locations.

A3A2.,

A3A3,

AS,

A4

(4 each) Removed.

SUNAIR

LPA-9500

(PA #3 and

PA

#4 are not installed in the LPA-9500).

-.

.

......

-~;

.<

,'.:::

:",<::.';'::,.,":

Figure

Bottom Cover Removed.

5.1

(Sheet 7/8) Major Assembly Locations.

5-15

I

SUNAIR

LPA-9500

~16

Figure

RF/PS Module

5.1

(Sheet 8/8) Major Assembly Locations.

A4.

I

SUNAIR

LPA~9500

I

Table

1.

'Fault: PAlXGAIN LOW

gain

of this

This indicates that the

a)

Remove

Module b)

Reset

c)

Note trouble lies the fault. If

d)

If the fault message cites the

with

lies

2.

'Fault:

This indicates that the output voltage from this

a)

Remove

bottom cover

and

another

LPA-9500 controls

the fault message displayed. If this message shows the same

in

thisA4

no

the output

VC#X

LPA-9500

fault

LOW

A4

Module.

is

found,

combiner.

RFIPS

from

LPA-9500

Module

bottom

which

and

Followthe

follow the Peripheral

A4

Follow the Combiner Assembly

cover

5.1

Module

is

attempt to transmit.

RF/PS

with

which the output connection

and

Fault Messages.

A4

has

decreased more

and

interchange output coax connections between the defective

operating.

Module

+48V

disconnect

A4

fault isolation

Board

A3A2 fault isolation procedure, paragraph

A6

Power

Supply A4A2 is low or missing.

+48

volts input from the indicated

than 3 dB.

A4

Module

Qrocedure,

has

been

fault isolation procedure, paragraph 5.5.4.

to

be

defective,

paragraph

interchanged.

A4

Module.

then

5.5.1,

to locate

5.5.2.

the trouble

then

A4

the

b)

Reset

LPA-9500

c)

Iffault message

isolation procedure, paragraph5.5.1.

d)

Iffault message is still displayed, follow +48V Power Supply A4A2 fault isolation procedure

no

fault is

found,

3.

'Fault:

This message indicates that the temperature of this

a)

Remove

b)

Check

c)

Insure that the fans change to

d)

Check air passage for

e)

If

f)

If Peripheral

4.

'Fault:

PAlX

and

fans for operation

no

fault

is

HIGH

controls

is

not displayed,

follow Peripheral

OVERTEMP'

dean or replace the front

found,

follow

Board

VSWR'

and

observe

then

Board

and

freedom

HI

freedom

is

operational. check thermistor

from obstruction.

Peripheral

LCD

the trouble lies

A3A2

panel

from

SPEED

operation before temperature limit occurs.

Board

A3A2

display.

in

the

A4

Module.

fault isolation procedure, paragraph 5.5.2.

A4

Module

air filter.

obstruction.

fault isolation procedure

on

has

exceeded its limit.

this

A4

Module.

Follow the RFIPS Module

in

paragraph 5.5.2.

A4

in

Table 5.2. If

fault

This indicates a fault coupler is not installed, follow

in

the coupler or antenna

general

system

maintenance

or transmission line. Refer to antenna coupler

and

troubleshooting procedures for the antenna system.

manual.

If a

5-17

SUNAIR LPA-9500

5.

'Fault:

TIMEOUr

This indicates that the antenna coupler failed

to

refer

antenna coupler

S.

'Fault:

COUPLER

This message appears an

antenna coupler tune cycle.

7.

'Fault:

IC#X

manual.

when

HIGH'

UNTUNED'

the LPA-95oo istumed

to

tune.

Reset LPA-9500

on, ifan

This message indicates that the Power Supply current drain

•

a)

Remove

and

an

b)

Reset LPA-9500 controls and attempt to transmit.

c)

If the same isolation procedure, paragraph 5.5.1. If A3A2

d)

Iffault occurs procedure,

LPA-95oo

operational

A4

bottom

cover

module.

Module faults,

and

interchange output coax connections

then

the trouble lies

no

fault isolation procedure, paragraph

in PAwith

paragraph

which outputs have

5.5.4.

fault

5.5.2. been

is

found

interchanged, follow Combiner Assembly

and

antenna coupler

on

this

A4

Module

in

the

A4

Module.

on

the

RF/PS

attempt retuning. If fault is repeated,

is

connected

has

between

Follow the

Module

to

the

LPA-95oo.

exceeded 17.5 amperes .

the affected

RF/PS

A4,

follow the peripheral Board

A4

Module

AS

fault isolation

Initiate

Module

A4

fault

8.

'Fault:

TUNE

FAILURE'

This message indicates that the antenna coupler failed to tune. Reset LPA-9500 repeated,

This message indicates that that the frequency selected

refer to antenna coupler manual.

9.

a) b) c)

d)

e)

'Fault:

Check Check Check Check If

NO

BANDS'

transceiver/exciter frequency to insure that it

transceiver/exciter for proper operation without the LPA-9500. Refer to transceiver

interconnecting cables between transceiver/exciter and LPA-9500 for opens or shorts.

wiring between LPA-9500 control connector and Microprocessor

no

fault

found,

follow Microprocessor

no

Filter

Band

has

been

on

the transceiver/exciter

selected by the transceiver/exciter. This message

is

below

1.S

MHz.

is

Board

between 1.6000

A3A3

fault isolation procedure, paragraph

and

attempt retuning. If fault is

29.9999

MHz.

manual.

Board

A3A3.

5.5.S.

may

indicate

5-18

10.

'Fault:

This

mesage

a)

Depress

temperature limit. b)

Remove

c)

Check

d)

Assure that the

e)

Check

~

If

no

g)

If

Peripheral

11.

'Fault:

This

message

manual

or follow

MULTIPLEOVERTEMP'

indicates that

the asterisk

and

fans

for operation

air

passages

fault

is

found,

REFL'D

more

(*)

clean

or

replace

fans

change

for

follow Peripheral

Board

is

operational, check thermistors

POWER

than

pushbutton

the

and

freedom

to

freedom

HIGH'

indicates that a defect exists

general

maintenance procedures for the antenna

one

HI

from

front

SPEED

RF/PS

on

from

the

panel

Module

A4

keyboard

air filter.

obstruction.

has

exceeded

to

determine

operation before temperature limit

obstruction.

Board

A3A2

fault isolation procedure, paragraph

on

the

A4

in

the antenna coupler or antenna

system.

its temperature

which

Modules.

system.

SUNAIR

limit.

A4

Modules

have

occurs.

5.5.2.

Refer to antenna coupler

LPA-9500

exceeded

the

12.

'Fault:

FILTER#X'

message

This

a)

on b) c) Ifbands

Check

all

other

If

bands

indicates that

outputs of

A3A3U14

bands.

are

being

are

not

selected

RF

selected

5.5.S.

13.

'Fault:

BAND#X'

This is

being

message

a)

b)

14.

appears

selected Check Refer

by

the transceiver/exciter.

control cable

to

transceiver/exciter

'Fault: 5 VOLT

in

conjunction

between

SUPPLY

This message indicates that the

is

present atthe Filter AS

and U15

on

Microprocessor

input,

but

is

either absent orthe

Board

A3A3

properly, follow Filter AS fault isolation procedure,

properly, follow Microprocessor

with

the multiple fault message

transceiver/exciter

and

Board

and

LPA-9500

A3A3

indicates that

for opens

manual.

La'

+5

volt

power

supply output

from

the Auxiliary Power Supply A

level

for a

Low

on

paragraph

fault isolation

more

or

shorts.

is

too

low atthe

selected

5.5.3.

procedure,

than

10

band

and

paragraph

one filter

is

too

low.

output.

High

band

a)

Measure

Board

b)

Check

A3A2

input to 5

resistance

while the

Volt

to

ground

board

on

is

connected

Regulator (A1

the

+5

volt

line.

to

its edge

OU2)

of the Auxiliary

This

can

connector.

be

measured

Clear

Power

from

any shorts if they

Supply A

10.

C14

positive

on

the Peripheral

exist.

5-19

I

SUNAIR

c)

d}

15.

This

message

a)

b)

LPA·9500

Replace Follow

Peripheral

'Fault:

indicates that Measure If output voltage

5 Volt

5 VOLT

+5

Volt

I

Regulator,

Board

A3A2

SUPPLY

the

+5

Power

Supply

is

high,

replace

if

necessary.

fault isolation procedure,

HI'

volts

is

too

high.

A 1

OU2

output.

5 Volt

regulator.

paragraph

5.5.2.

c) Ifoutput voltage

16.

'Fault:

This

message

a)

Measure

on

the

Peripheral

b)

Check

c)

Replace

d}

Follow

17.

'Fault:

This

message

a)

Measure

b)

If

voltage is

c)

If voltage

is

norma',

28

VOLT

SUPPLY

indicates that

resistance

input

voltage

28

Volt

Peripheral

28

VOLT

indicates that the

+28

Volt

too

is

normal,

the

from

Board

A3A2

to

Regulator,

Board

SUPPLY

Power

high,

replace

follow

LO'

+28

while the

28

Volt

if

A3A2

HI'

+28

Supply

Peripheral

volts

is

too

Volt

Power

board

Regulator.

necessary.

fault isolation

volts is

28

too

A 1

OU1

Volt

Regulator.

Board

low.

Supply A 1

is

connected.

procedure,

high.

voltage.

A3A2

OU1

fault

isolation

to

ground.

Clear

paragraph

isolation

procedure,

This

can

any

shorts

5.5.2.

procedure,

paragraph

be

measured

detected.

paragraph

at

5.5.2.

C16

positive

5-20

I

SUNAIR

Table 5.2 RF/PS Module A4 Fault Isolation Procedures.

LPA·9500 I

STEP

1.

Aemove+48VDC connection from

P10fA4A3.

2.

Connect multimeterto

between +48V supply and A4A3P1.

3. Ground A4A1J3 pin

4.

Adjust Idle Current by following

Steps 5 thru 7 below.

5.

Set A4A1A10 and A15 fully

clockwise.

6.

AdjustA4A 1

until meter indicates 300

R1

ocounterclockwise

read

4.

mAo

current

·NORMALINDICATION

a.

600

mA,

if so proceed to Setp 8.

a.

300

rnA,

if so proceed to Step

FAILURE

PROCEDURE

•

a. Check collector voltage on A4A302,

b.

Ifwrong, check +48VPowerSupply

A4A2. c. Ifcorrect, adjust Idle current, see

Step

7.

a.

Check base voltage

and

03,

04,

05

and +48 VDC.

4.

on

03

for approximately +0.7 VDC.

A4A302

7.

AdjustA4A 1 R15counterclockwise

until meter reads 600 mA.

a.

600 mA,

if

so proceed to Step 8.

b.

If voltage is wrong and cannot be varied by A4A 1 regulator #1, A4A 1 U1.

c.

Ifvoltage can bevaried and current

is wrong, replace a. Check base voltage on

and

05

for +0.7 VOC.

b. Ifvoltage is wrong and cannot be

varied by A4A 1 R15, check bias

regulator #2, A4A 1 U2.

c.

Ifvoltage can be varied and current

is wrong, replace

A1

0, check bias

02

and

03. A4A304

04

and

05.

5-21

I

SUNAIR

LPA;.9500

I

Table 5.2 RF/PS Module A4 Fault Isolation Procedures (Cont...).

STEP

8.

Remove ground from A4A 1

P1

4 and reconnect Supply

9.

1.6to 30 MHzatO to 20 watts through a thru-line wattmeter to A4A3J1. Set excitation level

COOUNG

10. and ground A4A 1

11. output from amplifier is 300 watts. or input whichever occurs first.

A4A2..

Connect a source of RF excitation

FANS

Set Exciterfrequencyto 1.6 MHz

Increase excitation level until

from

exciter

to +48V Power

to

O.

ABE

OPEBADVE.

J3

pin 4.

is

J3

BE

SURE

20

watts, + 15VDC.

NORMAL

INDICATION

FAILURE

PROCEDURE

•

a.

Output 300W. input <20W. a. Check DCV on collector

A4A301.

01. b.lfoutputis1ooWt0200W,measure

RF outputs on collectors

03,04,05. c.

If +48V supply voltage to assure that it is not decreasing.

This

should

If

voltage

all outputs are equal, check

is

low, replace

of

exceed

A4A302,

12.

If

all inputs and outputs are normal, check input and output BITE circuits.

5-22

a.

Output BITE, nominal-12VDC.

b.

Input BITE, +2 to +5VDC.

d. If any outputs are low, compare inputs with other transistors.

e. Ifinputs circuitry and transistors.

1.

If inputs are low, check input

circuitry.

a.

CheckA4A3R45, R46, C33, CR3,

L 19, C30, C31.

b.

Check A4A3R2, R3,

L1,CR1.

are

correct, check output

C1

, C2, C3,

I

SUNAIR

Table 5.3 Peripheral Board A3A2 Fault Isolation Procedures

I

NOTE: I The

LPA-9500

Antenna

has

Coupler.

been

designed

to

work

with the

CU-91

00

Digital

LPA·9500 I

SYMPTOM

1.

ALC

and

ACC

Inop.

2.

ALClnop.

3.

4.

5.

6.

7.

8.

PA#XLow.

ACClnop . VSWR

REFL

Band

PA

Fault.

Power

#X

#X,

Overtemp

Fault.

High

Fault.

•

Check

a.

CheckA3A2CR4.

b.

Check

a

Check

a

a.

Check Check

b.

Check

a.

Check

b.

Check

a. b.

Check P Check reference potential

a

D.

Check

b.

Check operation of A3A2U3

c.

Check operation of

a

b.

Check inputs Check

c.

FWD

Power

operation operation ofA3A2U1 operation ofA3A2U9B

FWD

and

operation ofA3A2U9D.

reference

operation ofA3A2U9C.

Out

and

operation ofA3A2U1

and

operation ofA3A2U7.

PROCEDURE

input to

of

A3A2U20

REFL

power inputs

voltage

FWD

references

on

Power inputs

on

A3A2U12.

A3A2R32

Band C

ODand

A3A2U9D

and and

A3A2Q3.

A3A2U1

A3A2U2. A3A2U7.

of

A3A2U

and

A3A2R42.

and

A3A2Q12.

to

A3A2U9B

10

to

A3A2U9C.

B. Dand

12.

(2V).

A3A2U2B,

Vc#XLow.

9.

10.

Ic#XHigh.

11.

Multiple

12.

5 Volt Supply

13.

28

Overtemp.

Volt Supply

HI

or

LO

LO.

Check

a. b.

Check

c.

Check Check inputs

a.

Check operation of

b.

Check

a

b.

Check

c.

Check

a.

Check

b.

Check

a.

Check

b.

Check

operation ofA3A2U11. operation ofA3A2U19.

inputs

operation ofA3A2U1

operation ofA3A2U3 inputs

operation ofA3A2U13. inputs

operation of

inputs

and

references

and

references to

A3A2U15.

and

references to

and

references

and

references

A3A2U13.

to

A3A2U11.

A3A2U15.

A3A2U1

and

A3A2U2.

and

A3A2U7.

to

A3A2U13B

to

A3A2U13A

and

A3A2U2.

D.

C.

5-23

I

SUNAIR

LPA-9500

"""'

OR

EXCITER

I

""

nCITlft

LPA·9500

.-

OR

J

I

METER

WATT

I-

WIth

CU-9100.

LPA-9500

H

/

I

WATT

I

IIETERJ

WATT

IIETIR

J--

CU-"OO

rl

::.-r-J

',O.n..

:-1

LOAD

:..,

::.-r-I

JART!FICIALJ

I

lANTlNNA

Without CU-91 00.

Figure

5.2

...-T_O_PIn_C

To

LPA·9500

24

GlugeWd

___

A

Test

Setup.

-I

<1-:...JPTT:....t..-_~

5-24

MIcfophcnePIug

U2291UG1

PH

10033D0014

Figure

5.3

Length Determined byCustomer.

Audio

Injection

Test

Cable

(Used in

BantnaPlug

orLJG.88N

Test

Setup).

5.7 SCHEMATICS ANP PARTS USTS

The following pages contain schematics

and

parts lists for the

LPA-9500,

see

Table

ISUNAIR LPA-9500 I

5.4

below.

DESIGNATOR

ASSEMBLY

A1

A2

ft.2

A4

SUBASSEMBLY

W2A1 W3A1 W4A1 W5A1 W6A1

A2A1 A2A2 A2M1

ft.2A1 ft.2A2 ft.2ft.2

A4A1 A4A2 A4ft.2

A4A3A1

DESCRIPTION

QI::!ASSIS

HARNESS HARNESS ASSY CHASSIS HARNESS ASSY CHASSIS HARNESS ASSY CHASSIS HARNESS ASSY CHASSIS

QQ~TBQL

PC

ASSY, LCD METER

COMPUT~BMOTHEB60ARO

PC

ASSY PERIPHERAL

PC

ASSY BFLPS

PC

ASSY,

PC

ASSY,

POWER

PC

ASSY,

ASSEM6L.

ASSY CHASSIS

PA~ELMQOUL.E

CONTROL

ASSY

ILLUMINATED

MICRO

MQOULE

MODULE 48V SWITCHING

AMP

POWER

Y

P

CONTROL

ASSY

AMP

PANEL

PS

SUNAIR

PART

00600100XX 8066013299 8066013396 8066013493 8066013591 8066013698

00600000XX

8066093098

8066092091

8066090803

8105081091 8105085097 8105083094

8066030096 8066037091 8066335091 8066031092

8066033095

NUMBER

/lJ3

A6 A7

A8

A9

A10 A11

A11A1

/lJ3A1

/lJ3A2 /lJ3A3 /lJ3A4 /lJ3/lJ3 /lJ3A6 /lJ3A7 /lJ3A8 /lJ3A9

/lJ3A10

A10A1

FILTEB PC PC PC PC PC PC PC

PC PC PC

CQM6IN~B

SP!,.II I ER FRQNT PC

CONNECTOR AUX

PC FILLER ASSY PC

MQDUL.E

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY

BAND

ASSY,

ASSY, ASSY,

WATTMETER MOTHERBOARD

MQQ!"'!"~

MQOUI..E

PAN~LASSY

REAR

PQWER

SUPPLY

AUX DUAL

FILTER FILTER FILTER FILTER FILTER

FILTER FILTER 7 FILTER

PAN~L

MQDULE

PWR

SUPPLY

DUMMY

1 2 3 4 5 6

8

LOAD

8066020091 8066021097

8066022093 8066023090

8066024096 8066025092

8066026099

8066027095 8066028091

8066029098

8066020899

8116060091 8066070098 8116015095

8105041090 8066050097

8066051093 8116016296 8116071092

Table 5.4 LPA-9500 Table of Assemblies.

5-25

I

SUNAIR

LPA-9500

I

•

ITHIS PAGE INTENTIONALl

YLEFT

BLANK. I

5-28

Sunair LPA-9500 Service guide

Specifications and Main Features

Frequently Asked Questions

User Manual