Harris HD Radio Technical Manual

Brand: Harris

Model: HD Radio

Category: Supplementary music equipment

Type: Technical Manual

This manual is also suitable for

FM HD Radio System

T.M. No. 888-2587-001

TECHNICAL MANUAL

888-2587-001

FM HD Radio System

Rev. C1: 04/19/07

888-2587-001 4/18/11

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 Broadcast Communications

Division. 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 Broadcast Communications

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

until 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 Technical and Troubleshooting assistance is available from HARRIS

Field Service during normal business hours (8:00 AM - 5:00 PM Central Time).

Emergency service is available 24 hours a day. Telephone 217/222-8200 to contact

the Field Service Department or address correspondence to Field Service

Department, HARRIS Broadcast Communications Division, P.O. Box 4290,

Quincy, Illinois 62305-4290, USA. Technical Support by e-mail:

[email protected]m. The HARRIS factory may also be contacted through a FAX

facility (217/221-7096).

Replaceable Parts Service

Replacement parts are available 24 hours a day, seven days a week from the

HARRIS Service Parts Department. Telephone 217/222-8200 to contact the service

parts 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 (217/221-7096).

NOTE:

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

4/18/11 888-2587-001

WARNING: Disconnect primary power prior to servicing.

Manual Revision History

FM HD Radio System

REV. DATE ECN Pages Affected

Preliminary 2/03/2006 Created

C 2/28/2007 P35719 Released

MRH-1

888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

MRH-2

4/18/11 888-2587-001

WARNING: Disconnect primary power prior to servicing.

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:

Replaceable Parts List Index Part Number Page

Table 7-1. Transmitter 994 9283 001 7-2

Table 7-2. Control Cabinet 992 9244 002 7-3

Table 7-3. Controller Board 992 8344 002 7-6

Table 7-4. PA Cabinet 992 9400 002 7-7

Table 7-5. PA Amplifier 994 7894 002 7-9

Table 7-6. PA Amplifier Board 992 7904 002 7-10

Table 7-7. Output Cabinet 992 9450 001 7-12

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 equiva-

lent 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 col-

umn 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 pur-

chased 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.

Transmitter

994 9283 001

Control Cabinet

992 9244 002

Controller Board

992 8344 002

PA Cabinet

992 9400 002

PA Amplifier

992 7894 002

PA Amplifier Board

992 7904 002

Output Cabinet

992 9450 001

4/18/11 888-2587-001

WARNING: Disconnect primary power prior to servicing.

WARNING:

THE CURRENTS AND VOLTAGES IN THIS EQUIPMENT ARE DANGEROUS.

PERSONNEL MUST AT ALL TIMES OBSERVE SAFETY WARNINGS, INSTRUC-

TIONS AND REGULATIONS.

This manual is intended as a general guide for trained and qualified personnel 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, and must be performed only by qualified personnel exercising 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 Protection 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, ENCLO-

SURES, GATES, PANELS OR SHIELDS. ALWAYS USE GROUNDING STICKS

AND SHORT OUT HIGH VOLTAGE POINTS BEFORE SERVICING. NEVER MAKE

INTERNAL ADJUSTMENTS, PERFORM MAINTENANCE OR SERVICE WHEN

ALONE OR WHEN FATIGUED.

Do not remove, short-circuit or tamper with interlock switches 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.

WARNING:

IF OIL FILLED OR ELECTROLYTIC CAPACITORS ARE UTILIZED IN YOUR

EQUIPMENT, AND IF A LEAK OR BULGE IS APPARENT ON THE CAPACITOR

CASE WHEN THE UNIT IS OPENED FOR SERVICE OR MAINTENANCE, ALLOW

THE UNIT TO COOL DOWN BEFORE ATTEMPTING TO REMOVE THE DEFEC-

TIVE CAPACITOR. DO NOT ATTEMPT TO SERVICE A DEFECTIVE CAPACITOR

888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

WHILE IT IS HOT DUE TO THE POSSIBILITY OF A CASE RUPTURE AND SUBSE-

QUENT INJURY.

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 there by 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 salt and 1/2 level teaspoonful of baking soda

to each quart of water (neither hot or cold). Allow victim to sip 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 article.

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)

888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

10 THINGS TO THINK ABOUT BEFORE INSTALLING

HD SYSTEMS

 Have you completed a site survey to determine if any site

changes are required?

o On-line type UPS for Exciter, Audio Processors, Ethernet, STL,

Remote Control, etc

o AC mains service panel size and OSHA considerations.

o Remote control capacity and configuration

o Room lighting

o Work surface

o Telephone service with headset phone for accessing support.

o Size of building

o Storage of documents and spare parts

 Do you have experience in installation of Transmitters and

Transmission line?

o Site grounding configuration

o Tools and craft skills to cut and assemble rigid line.

o Coordinate with electrician to connect AC service to transmitter.

o Any tower/antenna work considerations/tower crew contacted.

 Have you considered the additional heat gain in your building

when adding the HD equipment?

o Temperature alarm connected to remote control

o Redundant cooling equipment

o drip pan with drain for split systems to protect equipment below

evaporator

o Reject loads (if used) location.

o Addition HVAC may be needed.

 Do you own or have access to test equipment to measure and

monitor HD performance?

o High dynamic range digital spectrum analyzer with averaging and

narrow RBW.

o HD receiver with split mode

o Does the site have non-functioning test equipment that needs

removal?

4/18/11 888-2587-001

WARNING: Disconnect primary power prior to servicing.

 Do you have test equipment to verify AES audio?

o Verify; rate, status bits and no errors

o Monitor and listen for audio problems

 Have you considered the method that you will transport your

HD audio to the transmitter site?

o Need two paths for a full system; AES and 300 kbs Ethernet

 Have you considered the integration of the HD equipment with

your existing transmitter plant?

o AES audio sources in studio

o Audio processor with additional output for HD.

o IT expertise to conn

ect to an audio automation system for song title

and artist name.

o Ethernet/LAN integration with sub-netting and routing.

 Have you verified your current antenna system is working properly?

o Wide enough bandwidth

o Low VSWR across the channel

o Centered on channel

o Determine if group delay in combiner can be corrected by the

Flexstar HDX exciter

 Do you have internet access at your Station and transmitter site?

o To access support documents and software updates

 Have you attended a formal training seminar on IBOC theory?

o Understanding Digital delivery

o Understanding the equipment

o Understanding the spectral use

Visit our Harris Service web site for more tips on HD Radio installation,

measurements, performance and maintenance.

888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

Table of Contents

Section 1

Introduction/Specifications

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

FlexStar™ System Equipment . . . . . . . . . . . . . . . 1-1

HDx Exciter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

HDE-100 Exporter . . . . . . . . . . . . . . . . . . . . . . . 1-1

HDI-100 Importer. . . . . . . . . . . . . . . . . . . . . . . . 1-2

STL (Studio Transmitter Link). . . . . . . . . . . . . . 1-2

Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Ensemble Operations Center Description . . . . . 1-5

Basic FlexStar System Description. . . . . . . . . . . . 1-8

Basic RF System Description . . . . . . . . . . . . . . . . 1-9

HDx-FM Exciter. . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Boost Pro Amplifier . . . . . . . . . . . . . . . . . . . . . 1-10

High Power Combiner With Reject Load. . . . . 1-10

Test Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Isolator (Circulator with Reject Load) . . . . . . . 1-10

Remote Control Interface . . . . . . . . . . . . . . . . . 1-11

Power Monitoring Device . . . . . . . . . . . . . . . . 1-11

Platinum ZHD+ Transmitter . . . . . . . . . . . . . . . . 1-11

ZHD+ Transmitter Features . . . . . . . . . . . . . . . 1-12

HTX Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . 1-12

ZX Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

General IBOC Information . . . . . . . . . . . . . . . . . 1-13

Section 2

Installation & Initial Turn-On

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

Preliminary Steps . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

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

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Factory Test Data . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Weight and Dimensions . . . . . . . . . . . . . . . . . . . 2-2

System Site Considerations. . . . . . . . . . . . . . . . . . 2-4

Equipment Placement. . . . . . . . . . . . . . . . . . . . . 2-4

Boost Pro Installation . . . . . . . . . . . . . . . . . . . . . 2-5

Air System And Cooling . . . . . . . . . . . . . . . . . . 2-5

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Large Equipment Grounding Connections . . . 2-5

Rack mounted Device Grounding Considerations2-

Signal Lightning Protection. . . . . . . . . . . . . . . 2-6

Multiple Cabinet Interconnections . . . . . . . . . . . 2-6

RF Sample for RTAC. . . . . . . . . . . . . . . . . . . . .2-6

Power Supply Connections . . . . . . . . . . . . . . . . .2-6

Circulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Audio Connections. . . . . . . . . . . . . . . . . . . . . . . .2-6

Ethernet/Data Connections. . . . . . . . . . . . . . . . . .2-7

Initial Turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8

General Startup Information. . . . . . . . . . . . . . . . .2-8

Bring Up Each Transmitter (Cabinet) Independently

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Dual Cabinet Transmitter Systems. . . . . . . . . . . .2-9

Connect All Transmitters to Combiner System . .2-9

SLC Phase Alignment . . . . . . . . . . . . . . . . . . . . .2-9

Grounding Basics . . . . . . . . . . . . . . . . . . . . . . . . .2-11

Component requirements for MPS service. . . . . .2-12

FM/MPS AES audio input and MPS Data. . . . .2-12

HD Audio Processor. . . . . . . . . . . . . . . . . . . . . .2-12

FM Audio Processor. . . . . . . . . . . . . . . . . . . . . .2-12

HDE-100 Exporter . . . . . . . . . . . . . . . . . . . . . . .2-12

MAIN Delay IN (for analog carriers) . . . . . . .2-13

MPS Audio IN (for main HD carriers) . . . . . .2-13

MAIN Delay OUT. . . . . . . . . . . . . . . . . . . . . .2-13

44.1 kHz Clock OUT. . . . . . . . . . . . . . . . . . . .2-13

Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13

STL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14

Component requirements for SPS service . . . . . .2-14

SPS Audio Processor and rate converter . . . . . .2-14

NeuStar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14

HDE-100 Exporter 44.1 kHz Clock OUT . . . . .2-14

HDI-100 Importer . . . . . . . . . . . . . . . . . . . . . . .2-15

Ethernet to the system components. . . . . . . . . . . .2-15

System Level Configuration Drawings. . . . . . . . .2-16

Section 3

Operation

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

ZHD+ Front Panel Functions and displays. . . . . . .3-1

Platinum ZHD+ Transmitter . . . . . . . . . . . . . . . .3-1

Power HIGH/LOW/OFF . . . . . . . . . . . . . . . . . .3-1

RAISE/LOWER RF Output Power. . . . . . . . . .3-2

Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Fault/Foldback/Interlock LED Indications . . . .3-2

HDx-FM Exciter . . . . . . . . . . . . . . . . . . . . . . . . .3-3

ZX Front Panel Indicators, Displays and Controls.3-3

HTX Front panel Functions and displays . . . . . . . .3-4

Table of Contents (continued)

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Daily Pre-Operational Checkout. . . . . . . . . . . . . 3-5

Transmitter Turn-On . . . . . . . . . . . . . . . . . . . . . . 3-5

Transmitter Turn Off. . . . . . . . . . . . . . . . . . . . . . 3-6

Exciter Operation . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Boost Pro Operation . . . . . . . . . . . . . . . . . . . . . . 3-6

Emergency Operation . . . . . . . . . . . . . . . . . . . . . . 3-8

General System Response. . . . . . . . . . . . . . . . . . 3-8

No Front Panel LEDs or GUI. . . . . . . . . . . . . . 3-8

Front Panel Buttons Unresponsive. . . . . . . . . . 3-8

HDx-FM Emergency Response . . . . . . . . . . . . . 3-8

FAULT LED Illuminated . . . . . . . . . . . . . . . . . 3-8

Platinum ZHD+ Emergency Response . . . . . . . . 3-9

FAULT LED Illuminated . . . . . . . . . . . . . . . . . 3-9

FOLDBACK LED Illuminated . . . . . . . . . . . . 3-9

INTERLOCK LED Illuminated . . . . . . . . . . . 3-10

ZX Emergency Response . . . . . . . . . . . . . . . . . 3-10

ZX Basic Operating Principle . . . . . . . . . . . . 3-10

ZX First Response Troubleshooting. . . . . . . . 3-11

Boost Pro Response. . . . . . . . . . . . . . . . . . . . . . 3-12

FAULT LED Illuminated . . . . . . . . . . . . . . . . 3-12

Section 4

Boost Pro Theory of Operation

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

Boost Pro Circuit Descriptions . . . . . . . . . . . . . . . 4-1

Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4-3

A to D Converter. . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

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

Section 5

Maintenance and Alignments

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

Alignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Split-Level Combined systems . . . . . . . . . . . . . . 5-1

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

CAN Buss operation . . . . . . . . . . . . . . . . . . . . . . . 5-2

AC surge protection. . . . . . . . . . . . . . . . . . . . . . . . 5-2

Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Section 6

Troubleshooting

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

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Boost Pro Fault Indication . . . . . . . . . . . . . . . . . 6-2

Boost Pro 3-Strike Faults . . . . . . . . . . . . . . . . . 6-2

Other Faults for the Boost Pro . . . . . . . . . . . . . 6-3

Schematics, Wiring and Block Diagrams . . . . . . . 6-4

Boost Pro VT100. . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

VT100 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

VT100 - Page 1. . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

VT100 - Page 2. . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

VT100 - Page 3. . . . . . . . . . . . . . . . . . . . . . . . . 6-10

VT100 - Page 4. . . . . . . . . . . . . . . . . . . . . . . . . 6-11

VT100 - Page 5. . . . . . . . . . . . . . . . . . . . . . . . . 6-11

HD Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 6-13

No or Corrupt HD Output. . . . . . . . . . . . . . . . . 6-13

Ethernet Troubleshooting . . . . . . . . . . . . . . . . . . 6-13

4/18/11 888-2587-001 1-1

WARNING: Disconnect primary power prior to servicing.

Section 1

Introduction/

Specifications

1.1 Introduction

Due to the significant changes and complexity involved in this new technology called

HDRadio™ including all the peripheral equipment, we have created this document.

1.2 FlexStar™ System Equipment

1.2.1 HDx Exciter

The FlexStar™ HDx is a versatile exciter. The Exciter has a high power (55 watt) main

RF output and a low level (10 mw) Aux. RF output. The inputs and outputs are used

defined through the touch screen menus. When driven with an Exporter, the outputs can

be configured for FM, HD, FM+HD depending on transmitter configuration.

The input for HD, from the Exporter (possibly through an STL) is 300 kbps Ethernet for

the digital carriers, connected to the "EXPORTER LINK" input. Enter in the Exporter

link IP to match that on the Exporter screen.

The audio inputs for the FM "analog" must be defined on the set-up screens Select the

audio input to correspond with the input provided through your STL link, typically AES

audio.

1.2.2 HDE-100 Exporter

The FlexStar™ HDE-100 Exporter is required for Main Program Services (MPS). A

DexStar Exciter may be repurposed to serve this function but one of the two must be

used. The recommended installation location of the Exporter is at the studio. Studio

installation requires an STL capable of delivering MPS data to the transmitter site.

Examples would be an Intraplex STL or a Mosley Starlink 9003Q with the LAN option.

A method of delivering AES audio for main analog and SCA must also be considered.

1-2 888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

FM HD Radio System

Section 1 Introduction/Specifications

The main input is the AES3 audio (32 kHz to 96 kHz) signal for the MPS (main

program service) HD digital program. The Exporter also has an AES3 (32kHz to 96kHz

input and corresponding output for the main FM channel (analog) with a fully

adjustable diversity delay. Another input is the MPS PAD data. Secondary input from

the HDI-100 Importer is only for supplemental program services (SPS). The outputs of

the Exporter are the delayed main channel AES audio and an HD stream of up to 300

kbps (currently this is about 128 kbps) unidirectional UDP Ethernet for the digital

carriers.

1.2.3 HDI-100 Importer

The FlexStar™ HDI-100 Importer is required for any Supplemental Program Services

(SPS). It accepts, manages, encodes and multiplexes all Advanced Application Services

(AAS) including supplemental audio channels and program associated data (PAD) for

transport to the HDE-100 Exporter or to an existing DEXSTAR Exciter. It also manages

system bandwidth allocation.

The Importer is a dedicated server running several programs for this purpose. Do not

use the Importer for other functions as data collisions resulting in audio drop-outs will

result. The Importer will manage the bandwidth allocated for each of the inputs for the

digital carriers. The Importer must be co-located with the Exporter. You will need a

keyboard, monitor and mouse to set up the software applications. The platform is

typically a Pentium 4 PC with windows XP operating system. The Importer works best

when not subject to automatic updates or a continuous connection to the public Internet.

The inputs are AES audio for each SPS channel to be configured. The Importer output

is an Ethernet connection to an Ethernet switch.

1.2.4 STL (Studio Transmitter Link)

The STL is a major component of the system. Its purpose is to transport all audio and

data from the studio to the remote transmitter site. Typically the STL will have

equipment on each end of a link, and the link can be a 900MHz/950MHz RF path

microwave hop, telecom, satellite, direct fiber, etc. Uni-directional systems are

sufficient however bi-directional STL’s are becoming more common.

Whatever system you select, it must have the dual throughput capability of audio and

2nd signal of UDP data at a 300kbps rate (current configurations requite a minimum

128kbps) Ethernet. Future systems will require 300kbps to accommodate additional

services later on without the need to allocate more STL bandwidth. Since the HDx-FM

Exciter audio inputs are configurable you may use AES3, composite or descrete L/R for

the FM ("analog") source.

4/18/11 888-2587-001 1-3

WARNING: Disconnect primary power prior to servicing.

Section 1 Introduction/Specifications

FM HD Radio System

1.3 Glossary

Below are some terms associated with the FlexStar™ HD Radio architecture.

Customer LAN/WAN vs. Dedicated Ethernet - Subnetting and using a router can be

used to keep all non-HD Ethernet traffic away from the FlexStar equipment.

AAS - Advanced Applications Service. Non-program related data services encoded into

the HD bitstream and include Supplemental Audio, traffic information, news, weather,

stock quotes, etc. The first AAS to be implemented in HD receivers will be

Supplemental Audio channels. The HDI-100 receives, manages and multiplexes all

AAS services for HD Radio.

AES3 - Abbreviation for Audio Engineering Society 3-1992 which is the established

standard for professional digital audio, conveying two channels of periodically sampled

and uniformly quantized digital audio on a single twisted pair wire with or without

transformer coupling. The recommended sample rate standard for HD Radio is 44.1

kHz. The abreviation AES/EBU refers to a compatible source or reciever with

transformer coupling.

API - Application Programmers Interface. A set of programming commands used to

manipulate an existing program.

Dual Input Antennas - a low loss method of developing an FMHD hybrid signal. Dual

input antennas utilize two RF inputs, one for FM and a second for the HD transmitter.

They combine the HD and FM signals and each element radiates a hybrid FMHD

signal.

CAT 5/CAT 6 - Unshielded twisted pair (UTP) wire that can operate at speeds up to 100

megabits per second/1000 megabits per second. Typically used to make an Ethernet

connection to a device, it is now also being used to transport AES3 audio.

Combiner Port Injector - a low loss method that utilizes the broadband input port of a

constant impedance combiner system to inject the digital signal. Hybrids are then

utilized to combine the FM and HD signals and the resulting hybrid signal is then fed to

the antenna elements.

Common Amplification - Also referred to as Low Level Combining. Common

amplification utilizes a single transmitter and it’s associated IPA and PA stages to

amplify a hybrid HD+FM signal that has already been combined with the proper power

ratios at the exciter stage.

EOC - Ensemble Operations Center. The functional capabilities to manage the

transmission, configuration and status of all AAS inputs. See "1.3.1 Ensemble

Operations Center Description" on page 1-5 for further information.

1-4 888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

FM HD Radio System

Section 1 Introduction/Specifications

HD1, HD2, HD3, etc. - An HD receiver in digital receive mode, and locked to the

digital signal, may display these designations for the digital channels as shown in Table

1-1 below.

NOTE:

The HDE-100 Exporter will merge the MPS Audio into the HD stream coming

from the HDI-100 Importer. This HD stream may contain one or more SPS audio

programs, and could also include any MPS PAD, SPS PAD, or AAS data.

High Level Combining - IBOC separate combining method that uses a 10dB hybrid

combiner (coupler) to combine the station’s analog FM transmitter with an HD-only

transmitter. With this method 10% of FM transmitter and 90% of the HD tranmisttters’

output power is dissipated in a load.

Hybrid Combiner - a combiner that operates with similar, or dissimilar input power

levels by design.

Interleaved Antennas - a low loss space-combining method that employs two antenna

inputs; one for FM and a second for the HD signal. In an interleaved antenna system the

antenna bays are alternately radiating the FM and HD signals.

Managed Ethernet Switch - A switch is a hardware device that forwards and filters

data between network segments. A Managed switch that has configurable parameters

such has Port Priority and Flow Control (setting port data rates). A managed switch is

useful for industrial systems (high noise environments). This includes where the

Ethernet traffic has multiple HD radio data sources on one segment. An example would

be an Importer, PAD source and monitor applications all competing for access to an

Exporter that is feeding an Exciter (HDx-FM Flexstar Exciter) over an STL.

MPS - Main Program Service. The stations main program audio delivered from the

station’s on-air studio. Currently required to be the identical program audio as the main

FM (audio).

Table 1-1 Multicast Channels Designations

FlexStar

System

Multicast

Receiver

FM FM

MPS HD1

SPS1 HD2

SPS2 HD3

SPS3 HD4

SPS4 HD5

4/18/11 888-2587-001 1-5

WARNING: Disconnect primary power prior to servicing.

Section 1 Introduction/Specifications

FM HD Radio System

MPS PAD - Main Program Service Program Associated Data. Program related data

such as song title and artist information. Delivered in the iBiquity protocol from the

station’s audio hard disk storage system via an Ethernet or RS232 communications port.

This data is then fed to the HDE-100 Exporter and is displayed as text on the HD

receiver.

Separate Amplification - Two transmitters are used; one for FM only and one for HD

only.

Separate Antennas - A low-loss, space-combining technique that employs the station’s

existing FM main antenna, and the station’s licensed auxiliary antenna for transmitting

the HD Radio sidebands. The analog and digital signals are effectively combined in

space. The primary advantage of using separate antennas is very low loss to the HD

signal, significantly reducing the HD transmitter power requirements. The primary

disadvantage is unequal azimuth radiation patterns and resulting reception variation of

the analog to digital signal ratios.

Split Level Combining (SLC) - A Harris exclusive method of developing a hybrid

IBOC signal using a combination of separate amplification and common amplification.

Today’s systems utilize a 3dB, 4.77dB, or 6dB hybrid combiner to make the most

efficient use of the existing analog transmitter, and to properly size the digital

transmitter to be capable of the digital-only power levels in the future. SLC also

provides minimum combiner losses, maximum combining efficiency, and improved

overall AC to RF efficiency compared to Separate Combining.

SPS - Supplemental Program Service. Also referred to as Supplemental Audio Service,

Supplemental audio programming (1 to 4 additional ’channels’) is input to the HDI-100

Importer in AES3 digital format.

SPS PAD - Supplemental Program Service Program Associated Data. Identical to MPS

PAD, but for any of the SPS audio programs.

SRC - Sample rate converter.

Switch - Ethernet distribution device that is more spohisticated than a hub.

TCP IP - Transmission Control Protocol/Internet Protocol.

UDP - User Datagram Protocol. A simple unidirectional communication protocol that

sends, but requires no acknowledgement of packets being received.

1.3.1 Ensemble Operations Center Description

The following paragraphs provide a brief description of the various EOC software

components used in the HDI-100 Importer.

1-6 888-2587-001 4/18/11

WARNING: Disconnect primary power prior to servicing.

FM HD Radio System

Section 1 Introduction/Specifications

Connection Manager: The Connection Manager is responsible for managing the

connections from the various service providers. It authenticates service providers and

delivers the specific information regarding the Contracts and Services for each service

provider. It provides the mechanism for service providers to deliver data services to the

EOC. It allows multiple service providers to connect to the EOC as well as for multiple

services to be delivered from either one or multiple service providers. The Connection

Manager connects to the EOC Database for authentication information as well as to the

Logistics Processor for bandwidth and QoS information.

Contract Management API: Service providers deliver data services to the EOC based

upon their ‘Contracts’ with the broadcast stations or the EOC with regards to the

services sent and the bandwidth and QoS requirements. The Contract Management API

provides a standard interface for client applications to add data about service provider

contracts to the EOC Database and to administer this information.

EOC Database: The persistent data for the functioning of the EOC is stored in the EOC

database. All the Administrative functionality is handled by interaction with this

database. Administration is basically an offline activity to enable broadcast stations to

configure the EOC according to their requirements. Other EOC components like the

Connection Manager and the Logistics Processor write data about their functioning into

the EOC Database. The EOC Monitor component connects to the EOC database to view

the status of the EOC and the data.

Exporter Configuration API: The Exporter Configuration API basically supports the

ability to configure an exporter in order to support data services. It provides a standard

way for client applications to access and configure an exciter through an exporter. The

API supports the management of station information, mode configuration and channel

configuration, which enables clients to allocate bandwidth resources for data services.

HD PAD API: The HDPAD API allows applications to create and transmit PAD

content. It allows for application to input PAD data without having to worry about the

data encoding and transfer protocols. The PAD API transfers the data streams to the

SPS Processor in the EOC where it is multiplexed with the audio streams.

HD Studio - An application that can be used to stream audio from locally stored files to

the SPS processor. it will also generate SPS PAD, MP1, MP2, MP3, etc. service modes.

Logistics Processor: The Logistics Processor is responsible for the data reception from

the service providers in accordance with the specific protocol chosen for that particular

service provider. It is also responsible for managing the bandwidth and QoS for each

service provider as defined in the Contracts between the service provider and the

broadcast station. It communicates with the Connection Manager as well as the

Exporter. It also communicates with the EOC Database in order to retrieve

configuration information and save its performance data.

Page is loading ...

Harris HD Radio Technical Manual

Brand: Harris

Model: HD Radio

Category: Supplementary music equipment

Type: Technical Manual

This manual is also suitable for

Download PDF

report

Harris HD Radio Technical Manual

This manual is also suitable for

Harris HD Radio Technical Manual

Related papers

Other documents