Crown FM2000A Manuel d'utilisateur Page 1

iFM2000AAmplifier PackageUser's Manual©2005 Crown Broadcast, a division of International Radio and Electronics, Inc.25166 Leer Drive, Elkhart, In

2–2FM2000A User’s Manual2.1 Operating EnvironmentYou can install the FM2000A amplifier system in a standard 19–inch componentrack or on a suitable sur

2–3Installation2.4 Preinstallation2.4.1 Power Amplifier ModulesThe PA2000 incorporates four power amplifiers (two each in two modules). Due topossibl

2–4FM2000A User’s ManualWARNING2.4.2 Hubble Twist Lock® Connector WiringPrepare the wiring for the Hubble Twist-Lock® connector in the following manne

2–5Installation2.5 Installation1. Mount the units in an appropriate 19–inch wide cabinet. The power supplymust be installed directly below the power

2–6FM2000A User’s Manual8. Using the supplied connector, tie together pins 6 and 7 of the Remote I/Oconnector. The amplifier will not operate without

2–7InstallationFor remote I/O (Input/Output) connection, connect your remote I/O cable fromyour remote control location to the 25–pin (female) D-sub c

2–8FM2000A User’s ManualRemote I/O Connector Pinout TablePin # Function1 PA#8 Current Monitor (a buffered metering output with 1 V = 2 A)2 PA#7 Curren

3–1OperationSection 3—OperationThis section provides general operating parameters of yourpower amplifier system and a detailed description of the fron

3–2FM2000A User’s ManualThese steps summarize the operating procedures you should use for the initialoperation of the power amplifier and power supply

3–3OperationIllustration 3–3 PS2000 Front Panel Functions7. Turn on the main power switch located on the front panel of the power supply.(The unit ty

iiRevision ControlRevision Print DateInitial Release (Rev. 0) 900415-1 November 1998Second Printing 130319-1 November 1999Third Printing April 2002Imp

3–4FM2000A User’s Manual3.2.1 AC Input Circuit BreakerThe PS2000 supplies power to the PA2000 by converting single-phase 220/240 VACinto 50 VDC. The

3–5Operation3.2.2 DC Power SwitchThe main on/off power switch located on the front panel of the power supplycontrols high voltage output. (The contro

3–6FM2000A User’s Manual3.3 Digital MultimeterIllustration 3–7 Digital MultimeterThe 3–digit numeric display in the upper left corner of the front pan

3–7Operation3.4 Fault IndicatorsIllustration 3–8 Fault IndicatorsCAUTIONPossible equipment damage!Do not exceed 80 watts of input drive.Damage to the

3–8FM2000A User’s Manual3.5 Fuse IndicatorsIllustration 3–9 Fuse IndicatorsThe PA2000 consists of four field-replacable power modules with two amplifi

4–1Principles of Operationinquestomondo,eronoduepersonecheabbianoforse,unosidicechenonhaladispozionedofarlo.Msediciamochechenonc'enullanelmondore

inquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoconinquestomondo,forse,unosid

4–3Principles of Operation4.1.3 Backplane AssemblyThe backplane assembly is located in the vertical center of the PA2000 behind thefour power modules.

inquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoconinquestomondo,forse,unosid

4–5Principles of Operation4.2 PS2000 Power SupplyThe PS2000 supplies power to the PA2000 by converting single-phase 240 VAC into 50 VDC. The PS2000 i

iiiContentsContentsContentsContentsContentsSection 1—Getting Acquainted1.1 Your Amplifier Package...

inquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoconinquestomondo,forse,unosid

5–1TroubleshootingTROUBLETROUBLETROUBLESection 5—TroubleshootingThis section describes procedures for service personnel to diag-nose and troubleshoot

TROUBLETROUBLETROUBLE5–2FM2000A User’s Manual5.1 Troubleshooting Flow Chart AnalysisDoes your amplifier have output power?Yes NoIs power output

5–3TroubleshootingWWARNINGARNING5.2 Digital Multimeter ParametersThe following procedures are general in nature; for in-depth service, and repair seet

TROUBLETROUBLETROUBLE5–4FM2000A User’s Manual5.2.5 PA TempThe meter should read between 35–50°C with an ambient temperature of 25°C. Iftemperature is

5–5TroubleshootingIf one of the LED fault indicators is illuminated red, troubleshoot using the follow-ing suggestions:5.3 Fault Indicators5.3.1 Anten

TROUBLETROUBLETROUBLE5–6FM2000A User’s Manual5.3.5 Multiple IndicatorsCall your Crown Broadcast service representative. See Section 7, Service andSupp

6–1Reference DrawingsSection 6—Reference DrawingsThe illustrations in this section may be useful for makingadjustments, taking measurements, troublesh

6–2FM2000A User’s ManualIllustration 6–2 Back ViewIllustration 6–1 Front View6.1 ViewsFaultAntennaRF DrivePA TempPA DCPA1PA2PA3PA4PA5PA6PA7PA8Power Ou

6–3Reference DrawingsIllustration 6–3 FM2000A Block Diagram6.2 Diagrams and Schematics50-70 watt exciter(Crown FM100)PA2000Power AmplifierRF outputCon

iv4.2 PS2000 Power Supply ...4–54.2.1 AC Input Board ...

6–4FM2000A User’s ManualIllustration 6–4 PS2000 Block Diagram240 VACACCIRCUITBREAKERAC INPUTNEUTRALGROUNDACINPUTCCAPOWERSWITCHRECTIFIERPFC &CONTRO

GND EARTHGND CHASSISGND SIGNALGND FIELD SIGNALL1T112 45650-ohmREAR PANELFrom PFC Switcher BoardTo DC OUTPUT BOARDL100(FRONT PANEL)NOTES :_____________

GND CHASSISGND SIGNALGND FIELD SIGNAL15VDC+-(25KHZ)(22.5KHZ)25VR58 for AC current foldback.Install R58.***NOTES :______________1. ALL RESISTORS ARE I

DWG. NO. REV.200983-SCHC1 2 3 4 7 8ABCDEF1 2 3 4 6 7 8ABCEF5THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OFINTERNATIONAL RADIO AND ELECTRONICS

6–8FM2000A User’s ManualIllustration 6–5 PA2000 Block Diagram

6–9Reference DrawingsPA2000 RF InputRFOUTPUTC247PF NP0R410FWDREFLC147PF NP0C3.001C6.01C5.01D11N6263R720KR520KC4.001D21N5263R620KR182R820K1 2 3 4 5HD1R

6–10FM2000A User’s Manual500 W Power AmpRFINRFOUTVPWRRFINRFOUTVPWRDZ11101N47356.2VR11192003WR11202.7KC11210.01DISCR11125.62WR11135.62WR110115KR111010K

6–11Reference DrawingsRF Output Combiner

6–12FM2000A User’s ManualRF OUTPUT FILTER & REFLECTOMETERPA RFOUTPUTC121147PF NP0R1212100.50 WC12067.1PFC12079.3PFC12085.13PFL120394.1NHL120487.5N

6–13

Getting Acquainted1–1IINFORMATIONSection 1—Getting AcquaintedThis section provides a general description of the FM2000Apower amplifier system and intr

6–14Reference DrawingsRibbon Cables and ConnectorsRibbon Cables and Connectors

10mv per degree C.(0.2VDC at 2000W)SWR CALDENOMNUMERPOWER CALSWR clamp @ <200W(1.5:1)49.9K FOR 2:1100uA/A.5V/A.5V/A100uA/A100uA/A100uA/A100uA/A100u

6–16Reference DrawingsNotes:

7–1Service and SupportSection 7—Service and SupportWe understand that you may need various levels of support orthat the product could require servicin

7–2FM2000A User's Manual7.1 ServiceThe product warranty (see opposite page) outlines our responsibility for defectiveproducts. Before returning

Service and support 7 – 3 Crown Broadcast Three Year Limited Product Warranty SUMMARY OF WARRANTY Crown Broadcast, IREC warrants its broadca

7–4FM2000A User's ManualNotes:

7–5Service and SupportTo obtain factory service, complete the bottom half of this page, include it with the unit, and ship to:International Radio and

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

G–2FM2000A User's ManualA B CAF Audio Frequency; the frequencies between 20 Hzand 20 kHz in the electromagnetic spectrum.ALC Automatic Level Cont

FM2000A User’s ManualI1–21.1 Your Amplifier PackageThe FM2000A is a highly efficient amplifier package designed to set a new standardin FM transmitter

G–3Glossaryexciter (1) A circuit that supplies the initial oscillatorused in the driver stage. (2) A transmitter con-figuration which excludes stereo

G–4FM2000A User's ManualA B CPAI Power Amplifier CurrentPAV Power Amplifier Voltagepilot A 19–kHz signal used for stereo transmissions.pre-emphas

G–5GlossarySWR Standing-Wave Ratio; on a transmission line, theratio of the maximum voltage to the minimumvoltage or maximum current to the minimumcur

Index-1IndexAAAAAAC Input Board 4–5AC Power 1–3AC power 2–4ALC 3–4, 5–3Antenna 3–7mismatch 5–5antenna 2–5BBBBBBackplane Assembly 4–3Backplane

Index-2RF Output Impedance 1–3RF output power 1–2RF Power Output 1–3RF power output 1–2RU spaces 1–2SSSSSS/N Ratio 1–3Safety 1–4Schematics 6–3

Getting Acquainted1–31.2 Amplifier Package SpecificationsRF Power Output:200 to 2200 watts continuous with controlledpower adjust, with remote control

FM2000A User’s ManualI1–41.3 Safety ConsiderationsCrown Broadcast assumes the responsibility for providing you a safe product andsafety guidelines dur

2–1InstallationSection 2—InstallationThis section provides important guidelines for installing yourpower amplifier and power supply. Review this info