Harris Gates Two 994 9203 002 User Manual

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

Harris Gates Two 994 9203 002 Specifications

General

Brand	Harris
Model	Gates Two 994 9203 002
Category	Transmitter
Language	English

Summary

Guide to Using Harris Parts List Information

SECTION II INSTALLATION/OPERATION

2.4. General Installation Information

2.5. General Installation Requirements

2.6. Electrical Installation

Details on power requirements and electrical connections.

2.7. Initial Turn On Procedure

Step-by-step guide for the initial power-up and setup.

SECTION III MAINTENANCE

3.3. Preventive Maintenance

Procedures for routine equipment upkeep, including inspection and cleaning.

SECTION IV TROUBLESHOOTING

4.2. Front Panel Indicators

4.3. Transmitter Will Not Turn On

Troubleshooting steps for when the transmitter shows no power.

4.4. Contactors Do Not Energize

Troubleshooting steps for when primary contactors fail to energize.

4.5. No Power Output (Contactors Energized)

Troubleshooting steps when power is present but output is absent.

4.6. High Voltage Present, No Power Output

Troubleshooting steps when high voltage is present but output is absent.

4.7. Causes For Overloads

Identifying common causes for overload conditions.

SECTION V TRANSMITTER OVERALL

5.2. Personnel Protection

Essential safety measures for working with high-power transmitters.

5.3. Principles Of Operation

Section VI Parts List

SECTION A OSCILLATOR (A16)

A.3. Troubleshooting the RF Oscillator

Diagnosing and resolving issues with the RF oscillator.

SECTION B IPA (A5)

B.3. IPA Tuning and Testing Procedure

Step-by-step guide for tuning and testing the IPA.

B.4. Handling MOSFET’s

B.5. Testing MOSFET’s

SECTION C POWER AMPLIFIER A1 through A4

C.4. Troubleshooting the PA Boards

Methods for diagnosing issues with PA boards using an ohmmeter.

C.5. Handling MOSFET’s

C.6. Testing MOSFET’s

C.7. Scoping the RF Drive

C.8. RF Drive Phasing Measurement

SECTION D OUTPUT NETWORK

D.2. Adjustment Procedures

Procedures for tuning and adjusting the output network for optimal impedance.

SECTION E OUTPUT MONITOR (A18)

E.3. Troubleshooting

Diagnosing and resolving issues with the Output Monitor circuit.

SECTION F PDM GENERATOR (A15)

F.3. Troubleshooting PDM Generator

Diagnosing and resolving issues with the PDM Generator.

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

G.2. Maintenance

G.3. Handling MOSFET’s

G.4. Testing MOSFET’s

SECTION H PDM FILTER (A10 and A11)

SECTION J CONTROLLER BOARD (A12)

J.2. Replacement/Alignment Procedures

J.3. Overload Adjustment Procedures

Steps for adjusting overload thresholds for various parameters.

J.4. Troubleshooting the Controller

Diagnosing and resolving issues with the Controller Board.

SECTION K INTERFACE BOARD (A24)

K.3. Troubleshooting

Diagnosing and resolving issues with the Interface Board.