Crown FM1000A - Manuals

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.

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 ...

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: ...

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...

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. ®

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 ...

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...

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 –...

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...

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...

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...

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...

3–1 Operation Section 3—Operation This section provides general operating parameters of your poweramplifier system and a detailed description of the front paneldisplay.

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...

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...

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...

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...

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...

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 ...

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...

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...

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...

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...

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.

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...

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 ...

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...

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...

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.

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...

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...

6–14 FM1000A User's Manual Ribbon Cables and Connectors Ribbon Cables and Connectors

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.

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...

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...

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...

G–1 Glossary Glossary The following pages define terms and abbreviations usedthroughout this and other Crown Broadcast manuals. A B C

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...

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...

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...

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...