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Harris ZX2500 User Manual

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ZX Series
FM Transmitters
ZX2500, ZX3750, ZX5000, ZX7.5, & ZX10
TECHNICAL MANUAL
888-2595-001
ZX Series FM
Transmitter
Dec 20, 2011
Rev: J
T.M. No. 888-2595-001
© Copyright Harris Corporation 2009, 2010, 2011
All rights reserved

Table of Contents

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Harris ZX2500 Specifications

General IconGeneral
BrandHarris
ModelZX2500
CategoryTransmitter
LanguageEnglish

Summary

Section 1 Introduction

Manual Contents

Details the sections covered in this technical manual for Harris ZX series transmitters.

Features and Benefits

Highlights the useful features and advantages of the Harris ZX Series transmitters.

General Product Description

Provides an overview of the ZX series solid-state transmitters and their major subassemblies.

Transmitter Nomenclature

Explains how ZX transmitters are named based on exciter and amplifier chassis combinations.

Tri-mode Operation

Describes the three operating modes (FM, FM+HD, HD) for ZX transmitters.

ZX Transmitter General Construction

Details the solid-state construction and use of FET-based PA modules in ZX transmitters.

Major Subassemblies

Identifies key subassemblies within the ZX series amplifier and their roles.

Transmitter Accessories

Discusses various add-on options available for the ZX transmitter system.

Specifications

Provides detailed technical specifications for the ZX transmitter family.

Section 2 Installation

Field Services

Outlines available field service options for transmitter installation and commissioning.

Unpacking

Procedure for unpacking the transmitter and performing initial inspection.

Returns and Exchanges

Details the process and policy for returning or exchanging equipment.

Transmitter Documentation

Emphasizes the importance of studying technical manuals and drawings before installation.

Site Selection

Guidelines for choosing a proper installation location to ensure equipment reliability.

AC Mains Requirements

Specifies the AC power input requirements for transmitters with and without AC distribution chassis.

Surge Suppression Devices

Recommends the use of surge protection devices for incoming AC mains lines.

Ground Requirements

Details the necessity of AC safety ground and RF earth ground connections.

Cooling System Requirements

Explains the forced air cooling system and its categories for ZX transmitters.

Personnel and Equipment Protection

Provides recommendations to enhance personnel safety during installation and operation.

Remote Control Installation

Describes the methods for remotely controlling the ZX series transmitter.

Initial Start-up Procedure

Step-by-step guide for turning on the ZX series transmitter for the first time.

Section 3 Operation

Introduction

Information on transmitter operation, controls, indicators, and adjustments.

Controls and Indicators

Details the front panel, controller board, and internal LEDs for monitoring transmitter status.

System Metering Assembly

Describes the system metering panel for displaying output power in higher power models.

Basic Operational Procedures

Provides basic procedures for transmitter operators, including ON/OFF and power control.

Section 4 Theory of Operation

Introduction

Provides an in-depth discussion on the operation of ZX transmitters and subassemblies.

RF Interconnect Wiring Diagram

Details the RF power flow from exciter to output assembly.

Output Assembly

Explains the function of the Wilkinson power combiner and harmonic filter.

AC-DC Interconnect Wiring Diagram

Illustrates the AC mains power input connections to the amplifier chassis.

PA Backplane

Describes the PA backplane functions, including alarm detection and shutdown.

IPA Backplane

Explains the IPA backplane's function and fault comparators for redundancy.

I/O Filter PCB

Details the I/O filter board's role as the main interface point for connections.

8X PS Interface PCB

Describes the PS interface board's function between power supplies and the chassis.

5X Fan Monitor PCB

Explains the fan monitor PCB's role in 50V distribution and fault checking for DC fans.

16X Load PCB

Details the 16X load board's function in monitoring ballast load temperatures.

PA, IBOC PCB

Explains the RF signal amplification process within the PA modules.

Transmitter Controller PCB

Covers the controller PCB's functions, including on/off control and APC.

System Metering Assembly

Describes the system metering assembly for measuring RF power levels.

System Interconnect (multi-PA chassis transmitters)

Explains how multiple amplifier chassis connect for parallel operation.

Section 5 Maintenance and Alignments

Introduction

Overview of maintenance and alignment information for qualified technical personnel.

General Maintenance Guidelines

Provides guidelines on personnel training, tools, spares, and safety precautions.

Basic Maintenance Procedures

Details basic maintenance tasks for operators and first-level technicians.

Advanced Maintenance Procedures

Covers advanced procedures for chief engineers and lead technicians.

Special Part Replacement Notes

Addresses specific notes and precautions for replacing major subassemblies.

Section 6 Troubleshooting

Contacting Harris Service

Information on how to contact Harris for technical support and service.

Troubleshooting Table

Provides a table to help locate and correct transmitter problems.

Section 7 Parts List

ZX5000 Replaceable Parts List

Lists replaceable parts for the ZX5000 transmitter model.

ZX10 Replaceable Parts List

Lists replaceable parts for the ZX10 transmitter model.

Appendix A - FM Web Remote Option

Introduction

Provides information on the Harris FM Web Remote purchase option.

Installation

Details the installation procedure and internet security considerations for the FM Web Remote.

Operation

Explains how to access and use the main page of the FM Web Remote interface.

Theory of Operation

Describes the microcontroller and application used for the FM Web Remote.

Maintenance

Outlines key maintenance procedures for the FM Web Remote.

Troubleshooting

Provides solutions for common issues encountered with the Web Remote interface.

USB Flash Drive

Lists the files included on the USB flash drive supplied with the FM Web Remote.

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