Page 2 - Revision Control; Revision; Important Notices; International Radio and Electronics
ii Revision Control Revision Print Date Initial Release (Rev. 0) 900413-1 November 1998 Revision 1 April 2002 Important Notices ©2005, Crown Broadcast, a division of International Radio and Electronics, Inc. All rights reserved. No part of this publication may be reproduced, transmitted,transcribed,...
Page 3 - Contents; Section 1—Getting Acquainted
iii Contents Contents Contents Contents Contents Section 1—Getting Acquainted 1.1 Your Amplifier Package ....................................................................................... 1–21.2 Amplifier Package Specifications ......................................................................
Page 4 - Section 5—Troubleshooting
iv 4.2 PS1000 Power Supply ...................................................................................... 4–44.2.1 AC Input Board ............................................................................................. 4–5 4.2.2 PFC (Power Factor Correcting) Switching Board ...............
Page 5 - INFORMATION
Getting Acquainted 1–1 I INFORMATION Section 1—Getting Acquainted This section provides a general description of the FM1000Apower amplifier system and introduces you to safety conventionsused within this document. Review this material before install-ing or operating the amplifier and power supply.
Page 6 - Your Amplifier Package; Illustration 1–1 FM1000A Amplifier Package
FM1000A User’s Manual I 1–2 1.1 Your Amplifier Package The FM1000A is a highly efficient amplifier package designed to set a new standardin FM transmitter design offering modularity, ease of use, and long-term reliabil-ity. The FM1000A package includes a PA1000 amplifier, PS1000 power supply, andan ...
Page 7 - Amplifier Package Specifications; Better than –80 dB
Getting Acquainted 1–3 1.2 Amplifier Package Specifications RF Power Output: 100 to 1100 watts continuous with remotecontrolled power adjust RF Drive Requirement: 30 watts for full output RF Output Impedance: 50 ohms (unbalanced) Maximum SWR: 1.7:1 (With power foldback at high SWR) Frequency Range: ...
Page 8 - Safety Considerations; WARNING; Illustration 1–3 Sample Hazard Alert
FM1000A User’s Manual I 1–4 1.3 Safety Considerations Crown Broadcast assumes the responsibility for providing you a safe product andsafety guidelines during its use. “Safety” means protection to all individuals whoinstall, operate, and service the transmitter as well as protection of the transmitte...
Page 9 - Section 2—Installation
2–1 Installation Section 2—Installation This section provides important guidelines for installing yourpower amplifier and power supply. Review this information care-fully for proper installation. ®
Page 10 - Operating Environment; Medium phillips screwdriver; CAUTION
2–2 FM1000A User’s Manual 2.1 Operating Environment You can install the FM1000A amplifier system in a standard 19–inch componentrack or on a suitable surface such as a bench or desk. In any case, the area shouldbe as clean and well-ventillated as possible. The power supply must be installeddirectly ...
Page 11 - them on your work area with the circuit sides up.; Replace the front panel of the PA1000.
2–3 Installation 2.4 Preinstallation 2.4.1 Power Amplifier Modules The PA1000 incorporates four power amplifiers (two each in two modules). Due topossible damage during shipment, the power modules have been removed. Followthese steps to install the modules: 1. Remove the front panel of the PA1000 (f...
Page 12 - Hubble Twist Lock® Connector Wiring; Select conductor size from your National Electrical Code®.
2–4 FM1000A User’s Manual WARNING 2.4.2 Hubble Twist Lock® Connector Wiring Prepare the wiring for the Hubble Twist-Lock® connector in the following mannerbefore connecting to your AC power source: 1. Use round cord with a diameter of 0.385–0.780 inches (10–20 mm), Type SJ 12/3 – 10/3; Type S 16/3 –...
Page 13 - connector on the back of the PA1000.
2–5 Installation 2.5 Installation 1. Mount the units in an appropriate 19–inch wide cabinet. The power supply must be installed directly below the power amplifier for the includedcables to reach their respective connectors (see illustration 2–4 below). Note: The PS1000 weighs approximately 40 pounds...
Page 14 - RF power level adjustment
2–6 FM1000A User’s Manual 2.6 Remote I/O Connection LOCAL MAXIMUM +5V LOCAL POWER ADJUST MINIMUM REMOTE TANSMITTER CONTROL SW3 RAISE SW4 LOWER SW5 R62 Electro- Control Circuit REMOTE RAISE POWER Pin 4 Remote I/O Conn. REMOTE LOWER POWER Pin 15 Remote I/O Conn. Illustration 2–5 Local and Remote Funct...
Page 15 - . Connecting this pin to ground through a resistor allows the
2–7 Installation For remote I/O (Input/Output) connection, connect your remote I/O cable fromyour remote control location to the 25–pin (female) D-sub connector on the backpanel of the PA1000. The I/O Connector on the power amplifier is described in thefollowing diagram: The Remote I/O Connector Pin...
Page 16 - PA = Power Amplifier
2–8 FM1000A User’s Manual Remote I/O Connector Pinout Table Pin # Function 1 PA#8 Current Monitor (a buffered metering output with 1 V = 2 A) 2 PA#7 Current Monitor (a buffered metering output with 1 V = 2 A) 3 Ground 4 Remote RAISE Power (a momentary switch, on this pin, when held low willraise the...
Page 17 - Section 3—Operation
3–1 Operation Section 3—Operation This section provides general operating parameters of your poweramplifier system and a detailed description of the front paneldisplay.
Page 18 - Illustration 3–1 PS1000 Back Panel Functions
3–2 FM1000A User’s Manual These steps summarize the operating procedures you should use for the initialoperation of the power amplifier and power supply. More detailed informationfollows. 1. Ensure that the external remote control unit is properly connected (See the Pin Out Description Table, Sectio...
Page 19 - Illustration 3–3 PS1000 Front Panel Functions; Illustration 3–2 Local Power Adjust and Other Controls; mum level of desired operation.
3–3 Operation Illustration 3–3 PS1000 Front Panel Functions 8. Check the PA1000 parameters with the Digital Multimeter for a current (Tot Current) of 20 to 30 amps and a voltage (PA Voltage) of 25 to 35 volts. Ifparameters are within range, increase the Local Power Adjust to the maxi- 6. Before powe...
Page 20 - Illustration 3–4 AC Input Circuit Breaker; PA Temp—Should read 35 to 50°C with ambient temperature of 25°C.
3–4 FM1000A User’s Manual 3.2.1 AC Input Circuit Breaker The PS1000 supplies power to the PA1000 by converting single-phase 220/240 VACinto 50 VDC. The PS1000 is protected by a 20 A, double-pole circuit breakerlocated on the rear panel. This AC input circuit breaker must be in the “up”position (as s...
Page 21 - Illustration 3–5 DC Power Switch
3–5 Operation 3.2.2 DC Power Switch The main on/off power switch located on the front panel of the power supplycontrols high voltage output. (The control circuit activates this voltage.) Illustration 3–5 DC Power Switch Illustration 3–6 Interlock Switch Interlock Switch ® Power I O Power Switch W WA...
Page 22 - Digital Multimeter; Illustration 3–7 Digital Multimeter
3–6 FM1000A User’s Manual 3.3 Digital Multimeter Illustration 3–7 Digital Multimeter The 3–digit numeric display in the upper left corner of the front panel providesinformation on the amplifier’s operation. Use the “up” and “down” push-buttons toselect one of the following parameters as indicated by...
Page 23 - Illustration 3–8 Fault Indicators; Antenna
3–7 Operation 3.4 Fault Indicators Illustration 3–8 Fault Indicators CAUTION Possible equipment damage! Do not exceed 40 watts of input drive.Damage to the PA1000 will result ifthis level is exceeded. Faults are indicated by illuminated red LED’s when the following occurs: Antenna —Load SWR exceeds ...
Page 24 - Illustration 3–9 Fuse Indicators
3–8 FM1000A User’s Manual 3.5 Fuse Indicators Illustration 3–9 Fuse Indicators The PA1000 consists of two field-replacable power modules with two amplifiers ineach module. Each of the paralleled amplifiers is protected by a 10 amperefast-acting fuse. When a fuse opens, the indicator light next to it...
Page 25 - Section 4—Principles of Operation
4–1 Principles of Operation in q ue sto m ondo, ero no due pers one che ab biano for s e, uno si di ce che non ha la d ispozione do fa rlo. M se d ic iam o che ch e n on c'e nulla nel mondo reale di ma sc rive n do c on la matita ci ins egna a non parla re in q ue sto m ondo , ero no due pers one ch...
Page 26 - Introduction; then return to the 50
in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con ma scrivendo con in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con ma scrivendo con in ques to mondo, for se, u no si dice se diciam o...
Page 28 - DC Fuse and Power Distribution Board
in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con ma scrivendo con in que sto mondo, for se, u no si dice se diciam o che ma scrivendo con ma scrivendo con in ques to mondo, for se, u no si dice se diciam o...
Page 31 - TROUBLE
5–1 Troubleshooting TROUBLE TROUBLE TROUBLE Section 5—Troubleshooting This section describes procedures for service personnel to diag-nose and troubleshoot potential fault conditions in the poweramplifier and power supply.
Page 32 - Troubleshooting Flow Chart Analysis
TROUBLE TROUBLE TROUBLE 5–2 FM1000A User’s Manual 5.1 Troubleshooting Flow Chart Analysis Does your amplifier have output power? Yes No Is power output at the proper level? Yes No See Section 3.1 Initial Power-up procedures. Do you have power now? Yes No Is your exciter turned on? Secure all connect...
Page 33 - Digital Multimeter Parameters; Check the exciter to ensure proper power input level of 25–30 watts.
5–3 Troubleshooting W WARNING ARNING 5.2 Digital Multimeter Parameters The following procedures are general in nature; for in-depth service, and repair seethe Service & Support section of this manual. Lethal voltages present! Only technically qualifiedindividuals shoud attempttroubleshooting or ...
Page 34 - Ambient temperature higher than 50°C reduce temperature.
TROUBLE TROUBLE TROUBLE 5–4 FM1000A User’s Manual 5.2.5 PA Temp The meter should read between 35–50°C with an ambient temperature of 25°C. Iftemperature is 75°C or above, then check and do the following: ❑ Ambient temperature higher than 50°C; reduce temperature. ❑ Restricted air flow; remove any ob...
Page 36 - c. If none of the fans have short circuits, there is damage on the
TROUBLE TROUBLE TROUBLE 5–6 FM1000A User’s Manual 5.3.5 Multiple Indicators Call your Crown Broadcast service representative. See Section 7, Service andSupport, for contact information. a. The circuit breaker is located on the rear panel of the power supply. If the breaker has popped out, reset it b...
Page 37 - Section 6—Reference Drawings
6–1 Reference Drawings Section 6—Reference Drawings The illustrations in this section may be useful for makingadjustments, taking measurements, troubleshooting, orunderstanding the circuitry of your RF power amplifier andpower supply.
Page 38 - Illustration 6–1 Front View; Illustration 6–2 Back View
6–2 FM1000A User’s Manual Illustration 6–1 Front View 240 VAC IN RF Input Remote I/O Control RF Monitor (Optional Connection) RF Output Circuit Breakers + DC Input DC Input + DC Output DC Output PS1000 PA1000 Air Intakes/Filters Ground Screws Fans Power Control Air Exhaust Vents OFF OFF Illustration...
Page 39 - Power Amplifier; Diagrams and Schematics
6–3 Reference Drawings Illustration 6–3 FM1000A Block Diagram 30 W Exciter (Crown FM30) PA1000 Power Amplifier 1 kW RF Power Output Remote I/O Connector Power Supply Control 0–50 VDC PA Supply PS1000 Power Supply RF Input Excitation 240 VAC 50/60 Hz Input Power Single Phase 6.2 Diagrams and Schemati...
Page 43 - Ribbon Cables and Connectors
6–14 FM1000A User's Manual Ribbon Cables and Connectors Ribbon Cables and Connectors
Page 45 - Section 7—Service and Support
7–1 Service and Support Section 7—Service and Support We understand that you may need various levels of support orthat the product could require servicing at some point in time.This section provides information for both of these scenarios.
Page 46 - Service Manger
7–2 FM1000A User's Manual 7.1 Service The product warranty (see opposite page) outlines our responsibility for defectiveproducts. Before returning a product for repair or replacement (our choice), callour Customer Service department using the following telephone number: (866) 262-8917 Our Customer S...
Page 47 - Crown Broadcast Three Year Limited Product Warranty
Service and support 7 – 3 Crown Broadcast Three Year Limited Product Warranty SUMMARY OF WARRANTY Crown Broadcast, IREC warrants its broadcast products to the ORIGINAL PURCHASER of a NEW Crown Broadcast product, for a period of three (3) years after shipment from Crown Broadcast. All products are wa...
Page 49 - International Radio and Electronics Company, Inc.; Factory Service Instructions
7–5 Service and Support To obtain factory service, complete the bottom half of this page, include it with the unit, and ship to: International Radio and Electronics Company, Inc. 25166 Leer Drive Elkhart, Indiana, U.S.A. 46514-5425 For units in warranty (within 3 years of purchase from any authorize...
Page 50 - Glossary
G–1 Glossary Glossary The following pages define terms and abbreviations usedthroughout this and other Crown Broadcast manuals. A B C
Page 52 - Field-Effect Transistor
G–3 Glossary exciter (1) A circuit that supplies the initial oscillator usedin the driver stage. (2) A transmitter configurationwhich excludes stereo generation and audioprocessing. FET Field-Effect Transistor frequency synthesizer A circuit that generates precise frequency signalsby means of a sing...
Page 54 - Total Harmonic Distortion
G–5 Glossary SWR Standing-Wave Ratio; on a transmission line, theratio of the maximum voltage to the minimumvoltage or maximum current to the minimumcurrent; also the ratio of load impedance to in-tended (50 ohms) load impedance. THD Total Harmonic Distortion translator A transmitter designed to int...
Page 55 - Index; connectors 2–5; EE; Humidity Range 1–3; IIIII; Switching Board 4–5
Index-i Index A A A A A AC Input Board 4–5AC Power 1–3AC power 2–4ALC 3–4, 5–3Antenna 3–7 mismatch 5–5 antenna 2–5 B B B B B Backplane Assembly 4–3Backplane DC Interconnect Board 4–3Board Layouts 6–3 C C C C C Circuit Breaker 3–4Combiner Board 4–2Connections 2–5Connectors Hubble Twist Lock® 2–4Hubbl...
Page 56 - Unpacking 2–2
Index-ii R R R R R remote I/O 2–7RF Drive Requirement 1–3RF Harmonics 1–3RF Output Impedance 1–3RF output power 1–2RF Power Output 1–3RF power output 1–2RU spaces 1–2 S SS S S S/N Ratio 1–3Safety 1–4Schematics 6–3Spurious Products 1–3SWR 1–3, 3–4, 5–3 T TT T T Tot Current 5–4transmitter package 1–2T...
