Harris Platinum Z2 CD User Manual

Platinum Z2 CD™

FM Transmitter Manual

Platinum Z2CD™

FM Transmitter Manual

888-2406-002

June 9, 2003

Rev. C

T.M. No. 888-2406-002

© Copyright Harris Corporation 2000, 2001
All rights reserved

888-2406-002

WARNING: Disconnect primary power prior to servicing.

Returns And Exchanges

Damaged or undamaged equipment should not be returned unless written approval and a
Return Authorization is received from HARRIS CORPORATION, Broadcast Systems
Division. Special shi pping instructions an d coding will be provided to assure proper
handling. Complete details regarding circumstances and reasons for return are to be
included in the request for ret urn. Custom equipment or specia l order equipment is not
returnable. In those instances where return or exchange of equipment is at the request of the
customer, or convenience of the customer, a restocking fee will be charged. All returns will
be sent freight prepaid and properly insured by the customer. When communicating with
HARRIS CORPORATION, Broadcast Division, specify the HARRIS Order Number or
Invoice Number.

Unpacking

Carefully unpack the equipment and preform a visual inspection to determine that no
apparent damage was incurred during shipment. Retain the shipping materials un til it has
been determined that all received equipment is not damaged. Locate and retain all
PACKING CHECK LISTs. Use the PACKING CHECK LIST to help locate and identify
any components or assemblies which are removed for shipping and must be reinstalled.
Also remove any shipping supports, straps, and packing materials prior to initial turn on.

Technical Assistance

HARRIS Tech nical and Trouble shooting assist ance is availabl e from HARRIS Fiel d
Service during norm al business hours (8 :00 AM - 5:00 PM Centra l Time). Emergency
service is available 24 hours a day. Telephone [phone] to contact the Field Service
Department or address correspondence to Field Service Department, HARRIS CORPO­RATION, Broadcast Systems Division, P.O. Box 4290, Quincy, Illinois 62305-4290,
USA. The HARRIS factory may also be contacted through a FAX facility (217/222-7041)
or a TELEX service (650/372-2976).

Replaceable Parts Service

Replacement parts are available 24 hours a day, seven days a week from the HARRIS
Service Parts Department. Telep hone 217/222-82 00 to contact the service part s department
or address correspondence to Service Parts Department, HARRIS CORPORATION,
Broadcast Systems Division, P.O. Box 4290, Quincy, Illinois 62305-4290, USA. The
HARRIS factory may also be contacted through a FAX facility (217/222-7041) or a
TELEX service (650/372-2976).

NOTE

The # symbol used in the parts list means used with (e.g. #C001 =
used with C001)

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MANUAL REVISION HISTORY

Platinum Z2 CD™

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Rev. Date ECN Pages Affected

B 12-17-01 47926 Title page, added MRH1/MRH2, sections 2 and 4.
C 06-09-03 TBD Title page, MRH1/MRH2 and page 2-30.

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Guide to Using Harris Parts List Information

The Harris Replaceable Parts List Index portrays a tree structure with the major items being leftmost in the index.
The example below shows the Transmitter as the highest item in the tree structure. If you were to look at the bill of
materials table for the Transmitter you would find the Control Cabinet, the PA Cabinet, and the Output Cabinet. In
the Replaceable Parts List Index the Control Cabinet, PA Cabinet, and Output Cabinet show up one indentation level
below the Transmitter and implies that they are used in the Transmitter. The Controller Board is indented one level
below the Control Cabinet so it will show up in the bill of material for the Control Cabinet. The tree structure of this
same index is shown to the right of the table and shows indentation level versus tree structure level.

Example of Replaceable Parts List Index and equivalent tree structure:

The part number of the item is shown to the right of the description as is the page in the manual where the bill for
that part number starts.

Inside the actual tables, four main headings are used:

Table #-#. ITEM NAME - HARRIS PART NUMBER - this line gives the information that corresponds to the
Replaceable Parts List Index entry;

HARRIS P/N column gives the ten digit Harris part number (usually in ascending order);
DESCRIPTION column gives a 25 character or less description of the part number;
REF. SYMBOLS/EXPLANATIONS column 1) gives the reference designators for the item (i.e., C001, R102,

etc.) that corresponds to the number found in the schematics (C001 in a bill of material is equivalent to C1 on the
schematic) or 2) gives added information or further explanation (i.e., “Used for 208V operation only,” or “Used
for HT 10LS only,” etc.).

Inside the individual tables some standard conventions are used:

A # symbol in front of a component such as #C001 under the REF. SYMBOLS/EXPLANATIONS column means
that this item is used on or with C001 and is not the actual part number for C001.

In the ten digit part numbers, if the last three numbers are 000, the item is a part that Harris has purchased and
has not manufactured or modified. If the last three numbers are other than 000, the item is either manufactured by
Harris or is purchased from a vendor and modified for use in the Harris product.

The first three digits of the ten digit part number tell which family the part number belongs to - for example, all
electrolytic (can) capacitors will be in the same family

(524 xxxx 000). If an electrolytic (can) capacitor is found
to have a 9xx xxxx xxx part number (a number outside of the normal family of numbers), it has probably been
modified in some manner at the Harris factory and will therefore show up farther down into the individual parts
list (because each table is normally sorted in ascending order). Most Harris made or modified assemblies will
have 9xx xxxx xxx numbers associated with them.

The term “SEE HIGHER LEVEL BILL” in the description column implies that the reference designated part
number will show up in a bill that is higher in the tree structure. This is often the case for components that may
be frequency determinant or voltage determinant and are called out in a higher level bill structure that is more
customer dependent than the bill at a lower level.

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WARNING

The currents and voltages in this equipment are dangerous. Person­nel must at all times observe safety warn ings, in struct ions and regu ­lations.

This manual is intended as a general guide for trained and qualified per sonnel who are
aware of the dangers inherent in handling potentially hazardous electrical/electronic
circuits. It is not intended to contain a complete statement of all safety precautions which
should be observed by personnel in using this or other electronic equipment.

The installation, operation, maintenance and service of this equipment involves risks both
to personnel and equipment, an d must be pe rformed only by qualified pe rsonnel exercis ing
due care. HARRIS CORPORATION shall not be responsible for injury or damage
resulting from improper procedures or from the use of improperly trained or inexperienced
personnel performing such tasks.

During installation and operation of this equipment, local building codes and fire protec­tion standards must be observed. The following National Fire Prote ction Association
(NFPA) standards are recommended as reference:

• Automatic Fire Detectors, No. 72E

• Installation, Maintenance, and Use of Portable Fire Extinguishers, No. 10

• Halogenated Fire Extinguishing Agent Systems, No. 12A

WARNING

Always disconnect power before opening covers, doors, enclosures,
gates, panels or shields. Always use grounding sticks and short out
high volta ge points before servi cing. Never make int ernal adjust­ments, perform maintenance or service when alone or when fa­tigued.

Do not remove, short-circuit or tamper with interlock switche s on access covers, doors,
enclosures, gates, panels or shields. Keep away from live circuits, know your equipment
and don’t take chances.

WARNING

In case of emergency ensure that power has been disconnected.

If oil filled or electrolytic capacitors are utilized in your equipment, an d if a leak or b ulge
is apparent on the capacitor case when the unit is opened for service or mainten ance, allow
the unit to cool down before attempting to remove the defective capacitor. Do not attempt
to service a defective capacitor while it is hot due to the po ssibility of a case rup ture and
subsequent injury.

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FIRST -AID

Personnel engaged in the installation, operation, maintenance or servicing of this
equipment are urged to become familiar with first-aid theory and practices. The following
information is not intended to be complete first-aid procedures, it is a brief and is only to
be used as a reference. It is the duty of all personnel using the equipment to be prepared to
give adequate Emergency First Aid and thereby prevent avoidable loss of life.

Treatment of Electrical Burns

1. Extensive burned and broken skin
A. Cover area with clean sheet or cloth. (Cleanest available cloth article.)
B. Do not break blisters, remove tissue, remove adhered particles of clothing, or

apply any salve or ointment.
C. Treat victim for shock as required.
D. Arrange transportation to a hospital as quickly as possible.
E. If arms or legs are affected keep them elevated.

NOTE

If medical help will not be available within an hour and the victim

is conscious and not vomiting, give him a weak solution of salt and

soda: 1 level teaspoonful of s al t and 1/ 2 le vel teas po onf ul of bak ing

soda to each quart of water (neither hot or co ld). Allow victim to si p

slowly about 4 ounces (a half of glass) over a period of 15 minutes.

Discontinue fluid if vomiting occurs. (Do not give alcohol.)

2. Less severe burns - (1st & 2nd degree)
A. Apply cool (not ice cold) compresses using the cleanest available cloth arti-

cle.

B. Do not break blisters, remove tissue, remove adhered particles of clothing, or

apply salve or ointment.
C. Apply clean dry dressing if necessary.
D. Treat victim for shock as required.
E. Arrange transportation to a hospital as quickly as possible.
F. If arms or legs are affected keep them elevated.

REFERENCE

ILLINOIS HEART ASSOCIATION
AMERICAN RED CROSS STANDARD FIRST AID AND PERSONAL SAFETY

MANUAL (SECOND EDITION)

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Table of Contents

1 Introduction/Specifications

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

General Description. . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Harris DIGIT Digital FM Exciter. . . . . . . . . . . . . . .1-3

Harris SuperCiter Analog Exciter. . . . . . . . . . . . . . .1-3

Redundant Exciters. . . . . . . . . . . . . . . . . . . . . . . . . .1-3

PA/IPA Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

RF Combining. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Directional RF Sample Port . . . . . . . . . . . . . . . . . . .1-5

Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Air System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 -5

Performance Specifications. . . . . . . . . . . . . . . . . . . . .1-5

2 Installation & Initial Turn-On

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Returns and Exchanges . . . . . . . . . . . . . . . . . . . . . . . .2-1

Air Cooling Requirements. . . . . . . . . . . . . . . . . . . . . .2-2

Z2 Transmitter Installation . . . . . . . . . . . . . . . . . . . . .2-2

Transmitter Placement . . . . . . . . . . . . . . . . . . . . . . .2-3

Removal of Pallet Bolts . . . . . . . . . . . . . . . . . . . . .2-3

Visual Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Exciter Installation . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

3-Phase Power Supply Installation . . . . . . . . . . . . . .2-5

Power Transformer Tapping. . . . . . . . . . . . . . . . . .2-5

Power Supply Connections . . . . . . . . . . . . . . . . . .2-5

Dual Power Supply Option. . . . . . . . . . . . . . . . . . .2-8

Single Phase Power Supply Installation . . . . . . . . . .2-9

Power Transformer Tapping. . . . . . . . . . . . . . . . . .2-9

Power Supply Connections . . . . . . . . . . . . . . . . . .2-9

Dual Power Supply Option. . . . . . . . . . . . . . . . . .2-12

Transmitter AC Connections. . . . . . . . . . . . . . . . . .2-13

Information concerning some 360 to 416

volt systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13

Three Phase AC Connection . . . . . . . . . . . . . . . .2-14

Single Phase AC Connection . . . . . . . . . . . . . . . .2-15

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15

Low Voltage Power Supply and Blower . . . . . . .2-16

Exciter AC Voltage Selection. . . . . . . . . . . . . . . .2-16

RF Output Connection . . . . . . . . . . . . . . . . . . . . . .2-16

Audio Input Connections . . . . . . . . . . . . . . . . . . . .2-16

External and Failsafe Interlock Connections . . . . . 2-17

External Interlock Connection . . . . . . . . . . . . . . .2-17

Failsafe Interlock Connection . . . . . . . . . . . . . . . 2-17

Initial Turn-on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Remote Control Connections . . . . . . . . . . . . . . . . . . 2-23

Remote/Extended Control and Status Connections 2-24

Typical remote/extended control and status connec-

tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Extended Metering. . . . . . . . . . . . . . . . . . . . . . . . 2-26

UPS IN/Remote Exciter S elect,

Configurable Input TB1-9. . . . . . . . . . . . . . . . . . . 2-26

Using an Uninterruptable Power Supply or UPS . . . 2-27

Setting the UPS Power Level. . . . . . . . . . . . . . . . 2-27

Optimizing Efficiency. . . . . . . . . . . . . . . . . . . . . . . . 2-28

Setting the Low Power Alarm. . . . . . . . . . . . . . . . . . 2-29

Jumper Settings for In stallation of a Harris Exciter . 2-29
Power Distribution for Optimum Transmitter

Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

Overheating from Line Unbalance. . . . . . . . . . . . . 2-33

Transmitter Noise Performance . . . . . . . . . . . . . . . 2-33

The Causes of Line Unbalance. . . . . . . . . . . . . . . . 2-34

Three Phase Delta Distribution Transformers . . . . 2-34

Three Phase Wye Distribution Transformers . . . . . 2-35

3 Operator Guide

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Transmitter Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Transmitter Metering. . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Forward Power (FWD PWR) Units of Measure . . . 3-3
Reflected Power (RFL PWR) Units of Measure . . . 3-3

Using the Diagnostic Display . . . . . . . . . . . . . . . . . . . 3-4

HOME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

BACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

MORE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Asterisk and Pound Signs(*, #) . . . . . . . . . . . . . . . . 3-8

Fault Logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Emergency Operating Procedures. . . . . . . . . . . . . . . 3-10

Multiple PA Failures in a Foursome. . . . . . . . . . . . 3-10

Manual Exciter Switching. . . . . . . . . . . . . . . . . . . . . 3-11

Manual IPA Switching . . . . . . . . . . . . . . . . . . . . . . . 3-11

Optimizing Efficiency. . . . . . . . . . . . . . . . . . . . . . . . 3-12

Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

4 Overall System Theory

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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Table of Contents

RF Flow Block Diagram Description . . . . . . . . . . . . .4-1

Exciters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

IPAs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Z-Plane Divider Board . . . . . . . . . . . . . . . . . . . . . .4-3

Z-Plane Combiner Board . . . . . . . . . . . . . . . . . . . .4-4

RF output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4

Detailed RF Theory of Operation . . . . . . . . . . . . . . . .4-5

Exciter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Automatic Exciter Switching . . . . . . . . . . . . . . . . .4-5

Manual Exciter Switching . . . . . . . . . . . . . . . . . . .4-5

IPA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

IPA Power Output. . . . . . . . . . . . . . . . . . . . . . . . . .4-6

IPA Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . .4-6

IPA Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

Main/Alternate Exciter Switching . . . . . . . . . . . . .4-7

Main/Alternate IPA Switching . . . . . . . . . . . . . . . .4-7

IPA Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

Air flow sensing.. . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

IPA_1 and IPA_2 interlocking.. . . . . . . . . . . . . . . .4-8

IPA Power Divider (3dB Hybrid). . . . . . . . . . . . . .4-9

Z-Plane Combiner/Divider Boards . . . . . . . . . . . . . .4-9

8-Way Divider . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

8-Way Combiner. . . . . . . . . . . . . . . . . . . . . . . . . .4-10

PA Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

Power Amplifier (PA). . . . . . . . . . . . . . . . . . . . . .4-12

Harmonic Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -14

Directional Coupler Assembly . . . . . . . . . . . . . . . .4-14

Power Supply Block Diagram Description . . . . . . . .4-15

PA Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

3-Phase Power Supply . . . . . . . . . . . . . . . . . . . . .4-15

3-Phase Power Supply . . . . . . . . . . . . . . . . . . . . .4-16

Single Phase Power Supply . . . . . . . . . . . . . . . . .4-18

Low Voltage Power Supply. . . . . . . . . . . . . . . . . . .4-20

Detailed Power Supply Descriptions. . . . . . . . . . . . .4-21

3-Phase PA Power Supply. . . . . . . . . . . . . . . . . . . .4-21

Rectifier Board . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

Rectifier Board Circuit Description . . . . . . . . . . .4-23

Single Phase PA Power Supply. . . . . . . . . . . . . . . .4-25

Rectifier Board . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25

Rectifier Board Circuit Description . . . . . . . . . . .4-26

Power Supply ID Jumpers. . . . . . . . . . . . . . . . . . . .4-28

Low Voltage Power Supply Board . . . . . . . . . . . . .4-29

Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29

Cooling System Description . . . . . . . . . . . . . . . . . . .4-30

Control System Description. . . . . . . . . . . . . . . . . . . .4-30

Master Controller . . . . . . . . . . . . . . . . . . . . . . . . . .4-31

EEPROM U39 . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31

APC, Automatic Power Control . . . . . . . . . . . . . 4-32

Calibration Factors and A/D Values. . . . . . . . . . . . 4-34

DAC_APC_REF . . . . . . . . . . . . . . . . . . . . . . . . . 4-36

Forward Factor and A/D_FWD_PWR . . . . . . . . 4-36

APC Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

MAX HIGH, MAX LOW and UPS Power Levels4-38

EXC Factor and IPA Factor . . . . . . . . . . . . . . . . . 4-39

Reflect Factor and A/D_RFL_PWR . . . . . . . . . . 4-39

VSWR Foldback. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40

Master Controller Faults . . . . . . . . . . . . . . . . . . . 4-41

PA Controller Board. . . . . . . . . . . . . . . . . . . . . . . . 4-42

PA Turn On/Turn Off. . . . . . . . . . . . . . . . . . . . . . 4-42

Metering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

Crossover (XOVER) Protection (Z2R only) . . . . 4-43

PA Controller Faults . . . . . . . . . . . . . . . . . . . . . . 4-44

Power Supply Controller . . . . . . . . . . . . . . . . . . . . 4-44

Power Supply Turn On . . . . . . . . . . . . . . . . . . . . 4-44

PA Power Supply Discharge . . . . . . . . . . . . . . . . 4-45

Power Supply Standby Mode . . . . . . . . . . . . . . . 4-45

Discharge Protection Circuit . . . . . . . . . . . . . . . . 4-45

RESET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46

Watchdog Timer. . . . . . . . . . . . . . . . . . . . . . . . . . 4-46

Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46

PS Controller Faults. . . . . . . . . . . . . . . . . . . . . . . 4-47

Life Support Board. . . . . . . . . . . . . . . . . . . . . . . . . 4-47

Normal Operational Mode. . . . . . . . . . . . . . . . . . 4-47

Life Support Mode. . . . . . . . . . . . . . . . . . . . . . . . 4-54

5 Maintenance and Alignment

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Routine Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Record Keeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Recommended Log Readings . . . . . . . . . . . . . . . . 5-1

Transmitter Logbook. . . . . . . . . . . . . . . . . . . . . . . 5-2

Maintenance Logbook. . . . . . . . . . . . . . . . . . . . . . 5-2

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Module cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Cleaning the Air Filter. . . . . . . . . . . . . . . . . . . . . . 5-3

Cleaning the Power Supply . . . . . . . . . . . . . . . . . . 5-3

Blower Motor Maintenance . . . . . . . . . . . . . . . . . . . . 5-3

System Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Isolation Board Maintenance . . . . . . . . . . . . . . . . . . . 5-4

Isolation Board Removal . . . . . . . . . . . . . . . . . . . . . 5-5

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Installation of Isolation Assembly. . . . . . . . . . . . . 5-6

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Table of Contents

PA Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Directional Coupler Removal and Replacement. . . . .5-7

Typical Coupling Ratios . . . . . . . . . . . . . . . . . . . . . .5-7

Setting Maximum Power Limits . . . . . . . . . . . . . . . . .5-8

Setting FWD PWR to Display 100% . . . . . . . . . . . . .5-9

Setting Life Support Power Level . . . . . . . . . . . . . . . .5-9

Forward Power Calibration . . . . . . . . . . . . . . . . . . . .5-10

Reflected Power Calibration . . . . . . . . . . . . . . . . . . .5-13

PC Board Replacement Procedures. . . . . . . . . . . . . .5-15

Replacement of the Life Support Board . . . . . . . . . 5-15

Replacing the Power Supply Controller Board. . . .5-17

Replacing a PA Controller Board . . . . . . . . . . . . . .5-17

Replacing the Master Controller Board . . . . . . . . . 5-18

Replacement Using EEPROM U39 From

Old Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18

Replacing EEPROM U39. . . . . . . . . . . . . . . . . . . .5-19

System Configuration and Calibration . . . . . . . . . . .5-21

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21

Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-23

Removing and Replacing Firmware ICs . . . . . . . . . .5-23

6 Troubleshooting

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Power Amplifier Repair. . . . . . . . . . . . . . . . . . . . . . . .6-2

Transmitter Power vs. Module Failures . . . . . . . . . .6-2

Multiple PA Failures in a Foursome. . . . . . . . . . . . 6-3

Software Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

System Reset - TX_RESTART . . . . . . . . . . . . . . . . . .6-4

3 Strike Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5

Diagnostics Display Menu Tree . . . . . . . . . . . . . . . . .6-6

Fault Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6

Front Panel Fault LED . . . . . . . . . . . . . . . . . . . . . . .6-7

Fault Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Abbreviations Used In Fault Reporting . . . . . . . . . .6-7

Fault Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8

Self Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8

System Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

PA Muting Test. . . . . . . . . . . . . . . . . . . . . . . . . . .6-10

PA_ISO Resistor and Thermistor Test . . . . . . . . .6-10

PA RF Switch Te st . . . . . . . . . . . . . . . . . . . . . . . .6-11

Hardware Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-11

General Troubleshooting Tips . . . . . . . . . . . . . . . . . .6-12

Foldback Conditions. . . . . . . . . . . . . . . . . . . . . . . .6-12

Turning the Transmitter O N with No Pow er

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12

Asterisk and Pound Signs(*, #) . . . . . . . . . . . . . . . 6-12

Master Controller Faults. . . . . . . . . . . . . . . . . . . . . . 6-13

THERMISTOR, Fault . . . . . . . . . . . . . . . . . . . . . . 6-13

EEPROM_DEF, EEPROM U39 Default Load . . . 6-13

REF_WARNING, +5V Reference Warning. . . . . . 6-14

MSTR_REF, +5V Reference Fault. . . . . . . . . . . . . 6-14

RFL_PWR, Reflected Power Fault . . . . . . . . . . . . 6-14

INTLK, External Interlock Fault . . . . . . . . . . . . . . 6-15

FAILSAFE, Interlock Fault . . . . . . . . . . . . . . . . . . 6-15

POWER_FAIL, Fault. . . . . . . . . . . . . . . . . . . . . . . 6-15

LOW_AIR, Fault . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

UPS, Uninterruptable Power Supply Fault. . . . . . . 6-16

CPLR_NC, Forward Directional Coupler Cable Not

Connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

IPA_#_MUTE, Fault . . . . . . . . . . . . . . . . . . . . . . . 6-16

IPA_#_LOW, Fault. . . . . . . . . . . . . . . . . . . . . . . . . 6-16

IPA_#_OC, Fault . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

IPA_TW, IPA Temperature Warning . . . . . . . . . . . 6-17

IPA_OT, Fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

IPA_#_OUT, Fault . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

IPA_LOAD, Fault. . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

PSC#_COMM, Fault . . . . . . . . . . . . . . . . . . . . . . . 6-17

PAC#_COMM, Fault . . . . . . . . . . . . . . . . . . . . . . . 6-17

AMB_WARNING, Ambient Temperature Warning6-18

AMB_TEMP, Ambient Temperature Fault . . . . . . 6-18

ISO_BZ, Over-Temperature. . . . . . . . . . . . . . . . . . 6-18

System ISO Foldback . . . . . . . . . . . . . . . . . . . . . 6-18

System ISO Overload (Fault) . . . . . . . . . . . . . . . 6-19

EXC#_FAULT, Fault . . . . . . . . . . . . . . . . . . . . . . . 6-19

EXC#_LOW, Fault. . . . . . . . . . . . . . . . . . . . . . . . . 6-19

EXC#_AFC Fault. . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

PA Signal Tracing . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

PA Controller Faults . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

General PA Troubleshooting . . . . . . . . . . . . . . . . . 6-21

PA#_OC, PA Over-Current Fault . . . . . . . . . . . . . . 6-21

PA Current Foldback . . . . . . . . . . . . . . . . . . . . . . . 6-21

PA#_UC, PA Under-Current Fault . . . . . . . . . . . . . 6-22

PA#_MUTE_FLT, PA Mute Fault . . . . . . . . . . . . . 6-22

PA#_OT, PA Over-Temperature Fault . . . . . . . . . . 6-22

PA#_OUT, PA Out Fault . . . . . . . . . . . . . . . . . . . . 6-22

PA#_ISO, PA ISO Over-Temperature Fault. . . . . . 6-22

PA_ISO_OT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

PA_ISO_LOW, Fault . . . . . . . . . . . . . . . . . . . . . . . 6-23

PA_ISO_SW, Fault. . . . . . . . . . . . . . . . . . . . . . . . . 6-24

Combiner ISO Faults . . . . . . . . . . . . . . . . . . . . . . . 6-24

PAC#_REF, +5V Reference Fault . . . . . . . . . . . . . 6-24

PAC#_VOLTS, Power Supply Fault . . . . . . . . . . . 6-24

PAC#_-15V, PA Controller PS Fault . . . . . . . . . . . 6-24

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Table of Contents

PAC#_J#, Cable Fault. . . . . . . . . . . . . . . . . . . . . . .6-24

Power Supply Controller Faults. . . . . . . . . . . . . . . . . 6-26

General Power Supply Troubleshooting. . . . . . . . .6-26

Critical Power Supply Faults. . . . . . . . . . . . . . . . . .6-26

Soft Start Circuit Fault . . . . . . . . . . . . . . . . . . . . .6-27

PS1_HS_TEMP, Fault . . . . . . . . . . . . . . . . . . . . .6-27

PS_DSCHG, Discharge circuit fault. . . . . . . . . . .6-27

PS_PHS_LS, Phase Loss (100-120 Hz ripple). . .6-27

PSC#+20V, Fault . . . . . . . . . . . . . . . . . . . . . . . . .6-28

PS#_CONFIG, Configuration Fault. . . . . . . . . . .6-28

PS1_JUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28

Non Critical Power Supply Faults. . . . . . . . . . . . . .6-29

PS#_TAP#, Power Supply Tap Fault . . . . . . . . . .6-29

7 Parts List

Parts List Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

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WARNING: Disconnect primary power prior to servicing.

Introduction/
Specifications

1.1 Introduction

This technical manual describes the Harris Platinum Z2 solid-state FM radio
transmitter. This manual contains all the information needed to install, operate and
service these transmitters.

This manual contains the following sections:

• Section 1: Introduction/Specifications, identifies the versions of the product

available and the possible options, and provides specifications.

• Section 2: Installation/Initial Turn-on, details the procedures to receive, install

and prepare the transmitter for use, up through the initial turn-on of the equip­ment.

• Section 3: Operators Guide, describes operation of the equipment and is intended

to be the primary section referenced by operating personnel.

• Section 4: Overall System Theory, is included to help service personnel to under-

stand the inner workings of the transmitter.

• Section 5: Maintenance/Alignments-Adjustments, lists and explains alignments

and adjustments which might be required once the transmitter leaves the Harris
Broadcast factory.

• Section 6: Troubleshooting, is included as a servicing aid, to be used along with

Sections 4 and 5 by qualified service personnel to identify and correct any equip­ment problem which might develop.

• Section 7: Parts List, a comprehensive listing any of the equipment’s component s

which might ever be needed.

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Introduction/Specifications

1.2 Features/Benefits

• Includes the field-proven Harris DIGIT Digital FM Exciter with built in DSP ste-

reo generator. As the world’s first all-digital FM e xciter the Harris DIGIT accepts
AES/EBU digital audio and generates the fully modulated RF carrier totally in
the digital domain for the lowest noise and distortion available in any FM trans­mitter (16 bit digital audio quality).

• Power output range: 500W - 2.5kW for Z2CD; up to 2.75kW into a 1.1 or less

VSWR.

• Redundant, autoswitching, IPA amplifiers to eliminate a single point of failure.

• Microprocessor based controller for advanced control, diagnostics and display

capability. Includes built-in logic and commands for switching between main/
alternate DIGIT exciters and IPAs.

• Redundant RF amplifier modules that allow maintenance while the transmitter

remains on the air at reduced power (“Hot-Pluggable” modules).

• Broadband design to eliminate tuning adjustments from 87 through 108MHz

(N+1 capable). Frequency change can be done manually in less than five minutes
using simple switch settings, and in less than 0.5 seconds using an optional,
external controller.

• Quick start design provides full output power meeting all specifications within

five seconds of an “On” Command.

• Versatile air cooling design uses either an internal blower or an external air sys-

tem.

• Dual output power settings, standard, along with a third available power setting

for use with UPS or generator backup systems.

• Directional RF sample port provided for customer use.

• Available for single or three phase mains power, 50/60Hz.

• Optional Redundancy Package (See Appendix A).

1.3 General Description

The Harris Platinum Z is a series of highly-functional, cost-effective FM radio
transmitters designed using a concept called Z-Axis 3-dimensional electronic
design. The Z2CD and Z2FM are 2kW versions of the Platinum Z FM transmitter.
The Z2CD (Clearly Digital) utilizes the Harris DigitCD, Digital FM exciter, while
the Z2FM would designate an analog exciter such as the Harris SuperCiter is being
used.

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Introduction/Specifications

The Z-axis approach arranges the system RF components such as dividers,
combiners and amplifiers in three dimensions, to permit the most efficient possible
signal paths between them. The method allows the transmitter amplifying group to
be broken down economically into the smallest possible blocks for removal,
servicing and replacement. See Figure 4-1 (in Section IV) for overall block
diagram.

1.3.1 Harris DIGIT Digital FM Exciter

The Harris DIGIT FM exciter is supplied as standard equipment with all Platinum Z
transmitters. The DIGIT, with its digital input module, generates the complete
stereo FM waveform in the digital domain, using a digital signal processor (DSP) as
a stereo generator and composite limiter, and a 32-bit numerically controlled
oscillator (NCO) as a digital modulator. Digital techniques allow direct connection
of standard AES/EBU stereo audio data to the FM exciter to eliminate the distortion
and alignment problems of analog signal paths and analog FM exciters. DIGIT is
also available with an analog interface module for stations with analog program
paths, easily interchangeable with the digital module.

1.3.2 Harris SuperCiter Analog Exciter

The optional Harris SuperCiter is a 55 watt, high quality, analog exciter designed
for broadcasters needing state-of-the-art analog performance at a value price. The
SuperCiter combines time-proven PLL technology with modern RF amplifier
circuits to provide driving power of very high quality to any FM transmitter.

1.3.3 Redundant Exciters

Each transmitter includes one exciter in a basic version but allows space for a
second optional exciter with the needed exciter exchange autoswitching hardware
and control within the cabinet.

1.3.4 PA/IPA Modules

Each PA module contains a single RF PA on one side of the heatsink with the
opposite side empty. Each PA has two MOSFET devices mounted on a compact
heat spreading assembly, and is capable of providing up to 425 watts. The RF
modules plug directly into an isolated combiner without using channel sens itive RF
cables. PA modules are “hot-pluggable” and can be removed and inserted into an
operating transmitter without removing plugs and cables. Each PA module is
conservatively rated to produce over 375 watts of output power into a system
VSWR of 1.5:1 at up to 50oC ambient temperature at sea level.

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Introduction/Specifications

The IPA consists of a standard PA Module with one PA on each side of t he heatsink.
Only one half of the IPA module is active at a time to provide the required drive to
the PA. The transmitter contains sensing, logic and switching circuitry which will
automatically switch from a failed IPA to the remaining one. For even further
redundancy, any PA module can also be used as an IPA module, without
modification.

1.3.5 RF Combining

All 8 PAs are combined in a compact, “Z plane” isolated combiner. True isolation
means that each module will continue to work into a nominal 50 ohm load
regardless of the number of active amplifiers, for almost zero stress to the amplifiers
during fault conditions. The output of the 8 way combiner is then filtered by the
transmission line filter before leaving the transmitter. Directional couplers and a
customer RF demodulator sample are provided.

1.3.6 Control System

A microprocessor based controller monitors over 100 operating functions of the
transmitter and makes intelligent operating decisions based on operating conditions.
Detailed system information is available using the front panel diagnostic display.
The controller is designed for direct connection to standard parallel remote control
systems.

The Controller also includes built-in logic and controls for automatically switching
to the reserve IPA section, and a backup exciter if installed. The main controller
provides automatic power control, VSWR overload protection, automatic VSWR
foldback, RF power soft start, AC restart and diagnostics. Basic control functions
available even without the main controller are VSWR protection, IPA protection,
transmitter on/off, failsafe and interlock.

The control system for the transmitter is modular and is centered on the backplane
which is also the control panel for the transmitter. Various control printed circuit
boards are plugged into the backplane to fit the transmitter for the configuration
being supplied.

The control system front panel includes an output metering LCD display which can
be used to view power output, VSWR, PA voltage and PA current. A second LCD
window, the Diagnostics Display, permits extensive viewing of internal voltages,
temperatures and a detailed Fault Log to easily pin-point problems. Long-life LED
fault and status indicators and reliable membrane switches provide all needed local
control and selection for the transmitter.

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Introduction/Specifications

1.3.7 Directional RF Sample Port

Platinum Z FM transmitters provide an RF sample port with 30dB nominal
directivity. A directional RF sample provides more accurate performance
measurements by supplying a nearly reflection free RF sample source for external
monitoring equipment.

1.3.8 Power Supplies

The Z2 can be configured with a 3-Phase or Single Phase power supply. The
supplies are regulated by reliable tap-switching techniques (non-switching design).
This approach provides high conversion efficiency and excellent power factor with
very low line harmonics, in an easy to service design. The power supply is mounted
on a roll-out mounting plate for complete accessibility.

The Z2 can be configured with an optional second supply as part of the Z2
Redundancy package. The package includes a second PS Controller, a second PA
Controller and the second supply. For more information refer to Appendix A, Z2
Redundancy Package Option.

1.3.9 Air System

The Platinum Z uses a 2 speed fan to pull air in the back of the transmitter and
exhausts it out the top. There are air channels up through the PA assembly for
cooling. Upon startup, the transmitter will run at high speed for 1 minute, then will
drop to a lower speed provided there are no active faults. If a fault does occur during
normal operation the fan will automatically switch to high speed. For detailed
airflow information, refer to the Cabinet Outline Drawing in the Schematic
package.

1.4 Performance Specifications

See Sales Brochure at the end of this manual for a listing of the Performance
Specifications for the Platinum Z FM Transmitter.

NOTE:

Specifications subject to change without notice.

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Introduction/Specifications

888-2406-002 2-1

WARNING: Disconnect primary power prior to servicing.

Installation &
Initial Turn-On

2.1 Introduction

This section contains information for the installation of the Platinum Z2 solid state
FM Broadcast Transmitter and for performing the pre-operational checks.

NOTE:

For Dual transmitter configurations refer to the Systems Manual before pro­ceeding with this installation procedure.

2.2 Unpacking

Carefully unpack the transmitter and perform a visual inspection to ensure that no
apparent damage was incurred during shipment. Retain the shipping materials until
it has been determined that the unit is not damaged. The contents of the shipment
should be as indicated on the packing list. If the contents are incomplete or if the
unit is damaged electrically or mechanically, notify the carrier and HARRIS
CORPORATION, Broadcast Systems.

2.3 Returns and Exchanges

Damaged or undamaged equipment should not be returned unless written approval
and a Return Authorization is received from HARRIS CORPORATION, Broadcast
Systems. Special shipping instructions and coding will be provided to assure proper
handling. Complete details regarding circumstances and reasons for return are to be
included in the request for return. Custom equipment or special order equipment is
not returnable. In those instances where return or exchange of equipment is at the
request of the customer, or convenience of the customer, a restocking fee will be
charged. All returns will be sent freight prepaid and properly insured by the
customer. When communicating with HARRIS CORPORATION, Broadcast
Systems, specify the HARRIS Order Number or Invoice Number.

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Installation & Initial Turn-On

2.4 Air Cooling Requirements

Harris transmitters are designed to operate in a free, unobstructed environment with
a maximum inlet air tem perature of 50°C. This means that the t ransmitter air system
is designed to supply sufficient air at the required static pressure to cool the
transmitter only. Any additional pressure losses introduced by air exhaust systems
& air supply systems must be satisfied by means other than the transmitt er blo wers.
These inlet & exhaust systems generally need to be fan driven. Refer to the Outline
Drawing in the schematic package for information on intake and exhaust air flows.

NOTE:

“Clean” air is required. No salt air, polluted air, or sulphur air can be toler­ated. A closed air system is recommended in these environments; that is, an
air conditioned room that recirculates, and properly filters, the room air. No
outside air is brought into the transmitter room.

2.5 Z2 Transmitter Installation

Prior to installation, this Technical Manual and the appropriate FM Exciter
T echnical Manual should be carefully studied to obtain a thorough understanding of
the principles of operation, circuitry and nomenclature. This will facilitate proper
installation and initial checkout.

!

CAUTION:

ALL CONNECTIONS REFERRE D TO IN THIS INS TALLATION PROCEDURE
SHOULD BE VERIFIED USING THE SCHEMATICS SUPPLIED WITH THE
TRANSMITTER. THE SCHEMATICS SHOULD BE CONSIDERED THE MOST
ACCURATE IN CASE OF A DISCREPANCY.

The FM Transmitter installation is accomplished in the following order:

1. Transmitter placement

2. Visual Inspection

3. Exciter Installation

4. Power Supply Installation

5. Transmitter wiring

6. Initial checkout.

7. Remote Control Connections

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Installation & Initial Turn-On

2.5.1 Transmitter Placement

Set the transmitter in place on a level surface near power and signal cables. Either or
both sides of the FM Transmitter may be placed against a wall or other equipment.
Complete access is through the front and rear of the transmitter. The floor must be
capable of supporting a load of 250 pounds per-square-foot (1221 kg per-square­meter) (refer to Cabinet Outline drawing). Also be aware that the power supplies are
very heavy and roll out the front of the tran smitt er for mainte nance . Be sure to have
a smooth flat surface in front of the transmitter of at least 36 inches for power
supply maintenance.

2.5.1.1 Removal of Pallet Bolts

There are 4 bolts which must be removed in order to take the transmitter off the
wooden pallet, 2 toward the front of the cabinet and 2 toward the rear. Location of
these bolts can be verified by looking for the bolt heads underneath the pallet. If the
transmitter was shipped with the power supply removed, simply remove the power
supply cover from the bottom front of the transmitter cabinet to access the pallet
bolts. However, if the transmitter was shipped with the power supply installed, the
power supply tray is covering the bolts, so the fan assembly on the rear of the
transmitter will also have to be removed to access the rear pallet bolts (the power
supply itself does not have to be removed). Open and remove the rear door by lifting
it off its hinges. Remove the fan assembly by removing six screws and two nuts
located around the outside edge of the fan assembly. Slowly move the assembly to
the righthand side and disconnect the blower wire connector. The fan assembly can
now be set aside while removing the transmitter from the pallet. The rear pallet bolts
can now be accessed under the rear of the power supply tray.

After the transmitter is off the pallet, it is also a good idea to remove the shipping
screws holding the rear of the power supply tray. This will allow the power supply
to be rolled out the front of the transmitter at a later date without having to take off
the fan assembly.

2.5.2 Visual Inspection

Be sure to check the connection of all cables and wires in the transmitter. Areas to
check would include:

a. Power Supply Connections

1. Check for loose cables and connections and loose hardware on the floor
of the cabinet.

2. Make sure the Rectifier Boards are properly seated in the connectors on
top of the transformers (3-phase version).

3. Check the power supply and control connections to the Rectifier
Boards.

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Installation & Initial Turn-On

b. Controller Connections

1. Check the Ribbon cables connected to the back of the controller boards
and to the exciter(s).

2. Make sure that all of the boards in the controller are properly seated in
the backplane (motherboard) connector.

2.5.3 Exciter Installation

The exciter may or may not be removed from the transmitter depending on the
shipping considerations. If the exciter was not removed for shipping, then all
transmitter connections will already be hooked up. The audio input connections and
level adjustments can be found in the exciter manual accompanying the transmitter.

The exciter input cables should be installed in a metal conduit which is separate
from the AC supply.If the exciter was removed for shipping, there are three cables
which will need to be hooked up (not counting the audio inputs).

a. A ribbon cable which will hook to the remote control connector on the back

of the exciter. This is A10-J2 on the SuperCiter and J2 on the ‘DIGIT.

b. A coaxial cable with a male BNC connector which connects to the exciter RF

output. This is A10-J11 on the SuperCiter and J1 on the DIGIT.

c. AC Power Cable. Verify that the exciter is set for the correct operating volt-

age. For more information refer to the Excite r Manual, Section II, Insta llation.

NOTE:

For Digit Exciters, the VCO shipping screws must be removed as outlined in
the exciter manual in Section II.

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Installation & Initial Turn-On

2.5.4 3-Phase Power Supply Installation

The Z2 transmitter can be configured with either a 3-Phase or Single Phase power
supply. Operation of the supplies is basically the same with both using the dynamic
tap switching for efficiency. However, their physical make-up is different and
requires separate installation procedures. The 3-phase will be discussed first, then
the Single Phase will follow. Note that some transmitters may be shipped with the
power supply installed, depending on where and how it is shipped. If the power
supply was shipped installed in the transmitter, skip to "2.5.6 Transmitter AC
Connections" on page 2-13. Before installing the power supply check the primary
AC tapping on the power transformers as outlined below.

!

WARNING:

DISCONNECT AND LOCKOUT STATION PRIMARY POWER AT THE WALL
BREAKER BEFORE MAKING ANY CONNECTIONS.

2.5.4.1 Power Transformer Tapping

The power transformers are tapped at the factory for the primary AC voltage
specified by the customer. This voltage should be documented in the factory test
data accompanying the transmitter and tagged at the main contactor in the rear of
the transmitter. However, the voltage at the site and the transformer tapping should
be verified by the installation personnel. The input voltage and strapping chart is
shown on the Overall System Block Diagram along with the transformer schematic.
Verification and/or re-tapping will require opening the power supply access panel
on the front of the transmitter and rolling out the power supply (this is only if the
transmitter was shipped with the power supply installed). To remove the power
supply refer to Section V, under the heading “Power Supply Removal.”

2.5.4.2 Power Supply Connections

First, remove the front cover panel from the power supply compartment at the
bottom of the transmitter. The power supply connection cables are either tied up in
the power supply compartment (in the bottom of the transmitter) or tied up with the
power transformers. The power supply should be rolled into position in front of the
transmitter, then carefully rolled into the transmitter making sure that none of the
interconnect cables get caught on the power supply tray.

The following cables will need to be connected:

a. There is one ribbon cable W11 (blue) and one control voltage cable W21

(gray with orange connector) hanging on the right side of the power supply
compartment. Connect W11 to J4 on the Rectifier Board (on the Left side of
the supply). Connect W21 (flat gray cable with orange connector) to J6 on the
PS1 Rectifier Board (on the right side of the supply). See Figure 2-1.

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Installation & Initial Turn-On

Figure 2-1 3-Phase Power Supply Top View

b. The cable labelled A1P2 (multi-conductor cable with gray connector) plugs

into its mating connector on the left wall of the power supply compartment,
see Figure 2-1.

c. Wires #1, #2, and #3 (orange cables tied up on the left side of the power sup-

ply compartment) and two smaller gray wires #40 and *#41 plug into the gray
Wago block connector, A17TB1 on the front of the power supply tray (A17
designates a component on the power supply tray). See Figure 2-1. The wago
block has 5 terminals labelled terminal #1 on the left and #5 on the right. The
connections are as follows:

1. Wire #1 connects to terminal #1

2. Wire #2 connects to terminal #2

3. Wire #3 connects to terminal #3

4. Wire #40 connects to terminal #4

5. Wire *#41 connects to terminal #5

(*Wire #41 is not used on 3 phase 4-wire system)

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Installation & Initial Turn-On

To insert the wires into the Wago block, insert a screwdriver into the rectangular slot
above the wire hole and then carefully lift up. This will open the contact inside the Wago
block and the wire can be inserted. Be very careful not to let the wire ends fray as the con­nectors are very close together and could cause a short. The wire insulation should actu­ally extend just inside the Wago block hole.

d. Wire 45 (large orange cable tied up with the transformer) connects to the

feed-thru terminal C3 at the top of the power supply compartment. This is the
52Vdc output from the supply. See Figure 2-2.

e. The large orange ground wire #46, coming from the top of the rectifier assem-

bly attaches to a ground stud at the top-front edge of the power supply com­partment. It is located under the shelf which separates the power supply from
the PA compartment just above C3. See Figure 2-2.

f. Connect the safety ground wire to the stud on the front of the power supply

tray, next to A17TB1, see Figure 2-1.

g. Tighten the two hold down nuts located on the bottom front corners of the

power supply compartment. Re-install the front cover panel for the power
supply compartment.

Figure 2-2 3-Phase DC Power Supply Connections

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Installation & Initial Turn-On

2.5.4.3 Dual Power Supply Option

T o add redundancy the Z2 can be configured with an optional second power supply.
The installation procedure only changes slightly for this configuration. The
following lists only the additions to the above procedure.

h. Before rolling the power supply all of the way into the cabinet, connect the

blue ribbon cable labelled W12 to J4 on the power supply which will be clos­est to the rear of the transmitter . The suppl y may now be rolled all of the way
into the cabinet.

i. The Wago block on the front of the power supply tray, A17TB1, has 8 con-

nections compared to the 6 connections for the single supply configuration.
The connections are shown in Figure 2-3 and are as follows:

1. Wire #1 connects to terminal #1

2. Wire #2 connects to terminal #3

3. Wire #3 connects to terminal #5

4. Wire #40 connects to terminal #7

5. Wire *#41 connects to terminal #8

(*Wire #41 is not used on 3 phase 4-wire system)

Figure 2-3 3-Phase Dual Power Supply Top View

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Installation & Initial Turn-On

NOTE:

T erminals 1 and 2 are connected inside the Wago block as are terminals 3 and
4 and terminals 5 and 6. This allows for connections to the second supply on
the output side of the Wago block.

j. The +52Vdc output and ground from the second supply must also be con-

nected. Wire #52 connects to feedthru C4. Ground wire #60 connects to the
ground stud at the top front of the power supply compartment (above C3 and
C4). See Figure 2-2.

2.5.5 Single Phase Power Supply Installation

Before installing the power supply check the primary AC tapping on the power
transformers as outlined below. Even if the transmitter was shipped with the power
supply installed, it would be a good idea to check the power supply tapping if
possible.

2.5.5.1 Power Transformer Tapping

The power transformers are tapped at the factory for the primary AC voltage
specified by the customer. This voltage should be documented in the factory test
data accompanying the transmitter and tagged at the AC contactor. However, the
voltage at the site and the transformer tapping should be verified by the installation
personnel. The input voltage and strapping chart is shown on the Overall System
Block Diagram along with the transformer schematic. V erification and/or re-tapping
will require opening the power supply access panel on the front of the transmitter
and rolling out the power supply if the transmitter was shipped with the power
supply already installed (this depends on where and how it is shipped).

2.5.5.2 Power Supply Connections

First, remove the front cover panel from the power supply compartment at the
bottom of the transmitter. The power supply connection cables are either tied up in
the power supply compartment (in the bottom of the transmitter) or tied up with the
power transformers. The power supply should be rolled into position in front of the
transmitter, then carefully rolled into the transmitter making sure that none of the
interconnect cables get caught on the power supply tray.

The following cables will need to be connected:

a. There is one ribbon cable and one power connector hanging on the right side

of the power supply compartment inside the transmitter. The ribbon cable
connects to J4 on the Rectifier Board. Be sure to route this cable so it does not
touch the resistor located on top of the Rectifier board. The power cable (the
gray cable with the orange connector) connects to J6, on the Rectifier Board
near the front of the transmitter. See Figure 2-4.

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Installation & Initial Turn-On

Figure 2-4 Single Phase Power Supply Top View

b. The cable labelled A1P2 (gray and yellow multi-conductor cable with gray

connector) plugs into its mating connector on the left wall of the power sup­ply compartment, see Figure 2-4.

c. Wires #1 and #2 (orange cables tied up on the left side of the power supply

compartment) and wires #40 and #41 plug into the gray Wago block connec­tor on the front of the power supply tray. See Figure 2-4.

d. The wago block has 4 terminals labelled terminal #1 on the left and #4 on the

right. The connections are as follows:

1. Wire #1 connects to terminal #1

2. Wire #2 connects to terminal #2

3. Wire #40 connects to terminal #3

4. Wire #41 connects to terminal #4

To insert the wires into the wago block,insert a screwdriver into the rectangular slot
behind the wire hole and then carefully push toward the rear of the transmitter. This will
open the contact inside the wago block and the wire can be inserted. Be very careful not to
let the wire ends fray as the connectors are very close together and could cause a short.
The wire insulation should actually extend just inside the Wago block hole.