Kelvin Hughes CTX-A9 Users Manual

WORKSHOP MANUAL

TECHNICAL, INSTALLATION, COMMISSIONING

and

MAINTENANCE INFORMATION

for

Mk VII X-BAND TRANSCEIVER and ANTENNAS

PUBLICATION KH1251

Issue 1, May 2000

KELVIN HUGHES

Kelvin Hughes Ltd. is the Naval and Marine Division of Smiths Industries Aerospace
Registered Office: 765 Finchley Road, London NW11 8DS.
Incorporated in England No. 1030135

New North Road, Hainault, Ilford, Essex IG6 2UR, England
Telephone: [phone]
Telefax: 0208 559 8522
Telex: 896401

CONFORMITY STATEMENT

This equipment has been designed to comply with IMO regulations and IEC standards.

COPYRIGHT

ã Copyright Kelvin Hughes Ltd. 2000

All rights reserved. No part of this publication may be

reproduced, transmitted, transcribed, translated or stored

in any form or by any means, without the written

permission of Kelvin Hughes Limited.

Technical details contained in this publication are subject to

change without notice.

Page ii Issue 1

CONTENTS

PRELIMINARY PAGES

Title Page
Contents (this page) iii
Health and Safety Notice Page iv
Emergency Resuscitation vi
Electrostatic Caution Page vii
Amendment Record Page viii

CHAPTERS

Chapter 1 - General Description
Chapter 2 - Specification
Chapter 3 - Technical Introduction
Chapter 4 - Installation
Chapter 5 - Commissioning
Chapter 6 - Technical Description, including Unit Information for:

25 kW FET Modulator (CTX-A369/CTX-A345)
Tx Microcontroller PCB (CTX-A346)
Logarithmic Receiver PCB (CTX-A356)
Azimuth/Heading Line PCB (CAE-A106-2)
+26V Motor Starter PCB (CAE-A359)

Brushless Motor PCB (CAE-A236)
Chapter7-Maintenance
Chapter 8 - Parts
Annex A - Long Cable Runs

Issue 1 Page iii

IMPORTANT NOTICES
HEALTH AND SAFETY

1 All personnel are required to study these notices and familiarise themselves with all

applicable safety precautions and bring them to the attention of others in the vicinity.

HIGH VOLTAGE WARNING

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LETHAL HIGH VOLTAGES ARE PRESENT IN THE TRANSCEIVER

2 A current of 100 mA passing through the human body for one second can kill. This can

occur at voltages as low as 35 Vac or 50 Vdc. Some equipment in the system uses
electrical power that can be lethal. Whenever practical, before carrying out installation,
maintenance or repair, personnel involved must:

(1) Isolate the equipment from the electrical supply.

(2) Make tests to verify that the isolation is complete.

(3) Ensure that power cannot be accidentally reconnected.

DO NOT OPEN ANY OF THE UNITS WHEN THE RADAR IS OPERATIONAL -

UNLESS FULLY QUALIFIED TO DO SO.

3 If it is essential to work on the equipment with power connected, work must only be

undertaken by qualified personnel who are fully aware of the danger involved and who
have taken adequate safety precautions to avoid contact with dangerous voltages.

HEALTH HAZARD

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4 This equipment contains materials which produce toxic fumes when ignited.

5 The inhalation of dust and fumes or any contact with lubricants when cleaning the

equipment may be temporarily harmful to health, depending on individual allergic
reactions. Components which are broken or overheated may release toxic fumes or dust and
must be treated with caution. Do not inhale the fumes and ensure that the dust and debris do not
enter open cuts or abrasions. It is prudent to regard all damaged components as being potentially
toxic, requiring careful handling and appropriate disposal.

Page iv Issue 1

RADIATION HAZARD: NON-IONISING

AERIAL RADIATION HAZARD: INJURY CAN RESULT FROM EXPOSURE TO

THE MAIN BEAM OF A STATIONARY RADAR AERIAL. DO NOT STAND

LESS THAN 2m FROM THE CENTRAL FRONT FACE OF THE AERIAL.

6 It is accepted in most countries that no significant hazard is presented by radio frequency

mean power density levels up to 10mW/cm. RF power levels in excess of this may cause
harmful effects, particularly to the eyes.

7 Users of cardiac pacemakers should be aware that radio frequency transmissions, can

damage some such devices or cause irregularities in their operation. Persons using a
pacemaker should ascertain whether their device is likely to be affected before exposing
themselves to the risk of malfunction.

SAFETY ALOFT

AERIAL ROTATION: BEFORE MAINTENANCE TO THE TURNING

MECHANISM TAKES PLACE, DISABLE AERIAL ROTATION.

8 When working aloft, ensure that it is brought to the attention of someone in authority at

deck or at ground level and that suitably placed warning notices are posted warning that
work aloft is in progress. Ensure that the means of access aloft is secure and beware of wet or
slippery ladder rungs and working areas.

9 When working on or near a radar scanner and other moving or r.f. radiating equipment,

ensure that it is switched off and that the fuses have been removed and retained.

PERSONAL PROTECTION

10 Personal protection must be used whenever the possibility of an uncontrolled hazard

exists. For example, a suitable face visor, gloves and a body apron should be worn when
handling cathode ray tubes, as a precaution against injury in the event of breakage.

Issue 1 Page v

ELECTRIC SHOCK

RESUSCITATION

SHOUT FOR HELP. SWITCH

1

OFF ELECTRICITY IF POSSIBLE.

Do this immediately. If not possible, don't waste time
searching for a switch.

LOOSEN NECKWARE
TILT HEAD BACKWARDS
AND PUSH CHIN UPWARDS

PULSE PRESENT

REMOVE FROM DANGER.

2

Safeguard yourself when removing casualty from hazard.
If casualty is still in contact with electricity, and the supply
cannot be isolated, stand on a dry non-conducting
material (rubber mat, wood, linoleum).
Use rubber gloves, dry clothing, length of dry rope or wood
to pull or push casualty away from the hazard.

PINCH THE NOSE
COMMENCE VENTILATION
FOUR GOOD INFLATIONS
MOUTH TO MOUTH

CHECK PULSE

POSITION OF PULSE

IF CHEST DOES NOT RISE
RE-CHECK AIRWAY. REMOVE
OBSTRUCTION AND RE-INFLATE

PULSE ABSENT

HEART HAS STOPPED BEATING
LAY ON BACK ON FIRM SURFACE
eg FLOOR
COMMENCE EXTERNAL CHEST
COMPRESSION AND CONTINUE
MOUTH-TO-MOUTH VENTILATION

REMOVE OBVIOUS
OBSTRUCTION TO

3

BREATHING.

If casualty is not breathing start
resuscitation at once.

ONE FIRST AIDER

15 Compressions of 80 per
minute followed by two
inflations

CONTINUE INFLATIONS
UNTIL RECOVERY OF
NORMAL BREATHING

WHEN NORMAL BREATHING COMMENCES
PLACE CASUALTY IN RECOVERYPOSITION

Keep casualty at rest. Remove on a stretcher.
Watch closely, particularly for difficulty in
breathing. Lightly cover with blankets or other
materials.

TWO FIRST AIDERS

One conducts chest
compressions, without pause
at 60 per minute. The other
administers mouth-to-mouth
ventilation - after each 5th
compression

Check heart beat after first five
minutes and then after every three
mintutes. Continue external chest
compression and mouth-to-mouth
ventilation until a normal pulse is
felt and colour improves

CONTINUE INFLATIONS
UNTIL RECOVERY OF
NORMAL BREATHING

MEDICAL ASSISTANCE MAY BE OBTAINED ON / AT...............................

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Page vi Issue 1

ATTENTION

c

OBSERVE PRECAUTIONS

FOR HANDLING

ELECTROSTATIC SENSITIVE

DEVICES

CAUTION
Handling of Electrostatic-Sensitive Semiconductor Devices

Certain semiconductor devices used in the equipment are liable to damage due to stati
voltage. Observe the following precautions when handling these devices in their
unterminated state, or sub-units containing these devices:

(1) Persons removing sub-units from an equipment using these devices must
be earthed by a wrist strap and a resistor at the point provided on the equipment.

(2) Soldering irons used during the repair operations must be low voltage types
with earthed tips and isolated from the mains voltage by a double insulated
transformer.

(3) Outer clothing worn must be unable to generate static charges.

(4) Printed Circuit Boards (PCBs) fitted with these devices must be stored and
transported in anti-static bags.

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Issue 1 Page vii