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Harris Gates One 994 9202 002 User Manual

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GATES ONE - 994 9202 002
GATES TWO - 994 9203 002
GATES FIVE (1-PHASE) - 994 9204 002
GATES FIVE (3-PHASE) - 994 9205 002
T.M. No. 888-2314-001
Printed: 1990
© Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1998, 1999,
2000, 2001, 2002
Rev. AF: 06-21-02
Harris Corporation
All rights reserved
TECHNICAL MANUAL
GATES Series™
AM TRANSMITTERS

Table of Contents

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Harris Gates One 994 9202 002 Specifications

General IconGeneral
RF Output Impedance50 Ohms
Output Power1000 Watts
Modulation TypesFM
Power Output1000 Watts
Audio Input Impedance600 Ohms
Power SupplyAC 220V, 50/60 Hz

Summary

TREATMENT OF ELECTRICAL SHOCK

1. IF VICTIM IS NOT RESPONNSIVE...

Steps for administering basic life support including airway, breathing, and circulation.

2. IF VICTIM IS RESPONSIVE...

Steps for providing care after victim is responsive.

FIRST-AID

Treatment of Electrical Burns

Details procedures for treating extensive and less severe burns.

SECTION I GENERAL INFORMATION

1.2. Specifications

Lists the technical specifications for the GATES Series™ transmitters.

SECTION II INSTALLATION/OPERATION

2.4. General Installation Information

Covers general information related to the installation of the GATES Series™ transmitters.

2.5. General Installation Requirements

Details essential requirements for the general installation of the transmitter.

2.6. Electrical Installation

Covers the electrical installation procedures and power requirements for the transmitters.

2.7. Initial Turn On Procedure

Provides a step-by-step guide for the initial power-on procedure of the transmitter.

SECTION III MAINTENANCE

3.3. Preventive Maintenance

Details systematic operations for maintaining equipment, including inspect, feel, tighten, clean, adjust, and paint.

3.3.1. Maintenance Of Components

Covers maintenance procedures for transistors, integrated circuits, capacitors, and fixed resistors.

3.3.4. Low Voltage Supply Adjustment

Explains how to adjust the low voltage power supply outputs for proper transmitter operation.

3.3.5. High Voltage Supply Adjustment

Details how to adjust the high voltage supply to the correct operating range.

3.3.6. RF Drive Measurement

Explains how to measure and verify the RF drive level with an oscilloscope.

3.3.7. IPA Tuning

Describes how to tune the IPA for optimal drive level to the PA modules.

3.3.12. Power Output Calibration

Details how to calibrate the power output meter using external measurements.

3.3.13. Overload Adjustment Procedures

Covers procedures for adjusting overload thresholds for various parameters.

SECTION IV TROUBLESHOOTING

4.2. Definition of Front Panel Indicators

Explains the meaning of various front panel indicators used in the transmitter.

4.3. Symptom: Transmitter Will Not Turn On...

Troubleshooting steps for when no green LEDs on power level switches are illuminated.

4.4. Symptom: Green Power Level Status LED’s Illuminate...

Troubleshooting for when power LEDs light, but contactors don't energize.

4.5. Symptom: One or Both Primary Contactors Energize...

Troubleshooting for when contactors energize but no power output is present.

4.6. Symptom: High Voltage Is Present...

Troubleshooting for when high voltage is present but no power output is observed.

SECTION V TRANSMITTER OVERALL

5.2. Personnel Protection

Details safety measures due to low impedance high current capabilities and interlocking switches.

5.3. Principles Of Operation

Explains the operational principles of FETs, PDM theory, Polyphase theory, and signal flow.

5.3.9. High Voltage Power Supply

Describes the high voltage power supply, its function, and components.

Section VI Parts List

SECTION A OSCILLATOR (A16)

SECTION B IPA (A5)

B.4. Handling MOSFET’s

Provides essential precautions for handling MOSFETs to prevent electrostatic discharge damage.

SECTION C POWER AMPLIFIER A1 through A4

C.5. Handling MOSFET’s

Provides essential precautions for handling MOSFETs to prevent static discharge damage.

SECTION D OUTPUT NETWORK

SECTION E OUTPUT MONITOR (A18)

SECTION F PDM GENERATOR (A15)

SECTION G PDM AMPLIFIER/PULL-UP (A6-A9)

G.3. Handling MOSFET’s

Provides essential precautions for handling MOSFETs to prevent static discharge damage.

SECTION J CONTROLLER BOARD (A12)

J.4. Troubleshooting the Controller

Provides troubleshooting steps for various controller symptoms and IC functions.

SECTION K INTERFACE BOARD (A24)

Do’s and Don’ts for Integrated Circuit Handling

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