Crown FME 100W Spécifications

1–4FM500 User's ManualI1.2.1 Stand-AloneIn the standard configuration, the FM500 is an ideal stand-alone transmitter.When you add an audio source

Appendix–2FM500 User's ManualTransmitter efficiency outputRF Power Output Efficiency-FM500PADC Volts PADC Amps RF Power Efficiency51.3 13.91 550

G–1GlossaryGlossaryThe following pages define terms and abbreviations usedthroughout this manual.A B C

G–2FM500 User's ManualA B CAF Audio Frequency; the frequencies between 20 Hzand 20 kHz in the electromagnetic spectrum.ALC Automatic Level Contro

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

G–4FM500 User's ManualA B CPAI Power Amplifier CurrentPAV Power Amplifier Voltagepilot A 19–kHz signal used for stereo transmissions.pre-emphasis

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

Index–1IndexSymbols19–kHzlevel adjustment 5–3phase adjustment 5–3AAC.See power: inputALC 3–3, 3–8, 4–8altitudeoperating range 1–8amperesPA DC 3–3

Index–2FM500 User's Manualadjustment 5–3connectorsaudio input 2–10audio monitoring 2–12composite in 2–11remote I/O 2–11, 2–13RF input 2–9RF

Index–3Llabels 1–10LEDs 3–5, 4–10line voltage 2–3lockstatus 4–7lock fault 3–8Mmetering 1–2circuit description 4–8metering boardadjustments 5–5

Index–4FM500 User's ManualRFamplifier 4–13bias set 5–6bandwidth 1–8, 5–8exciter 2–5, 2–11board location 2–5, 4–6circuit description 4–6refe

1–5Getting Acquainted1.2.5 TranslatorA receiver configuration (FM500R, for example) takes an exciter configuration andadds receiver circuitry as well.

1–6FM500 User's ManualI1.2.6 SatellatorAnother option is available for all configurations—an FSK Identifier (FSK IDer).This added feature enables

1–7Getting Acquainted1.3 Transmitter/Exciter SpecificationsFrequency Range 87 MHz–108 MHz (65 MHz–73 MHzoptionally available)RF Power Output 100–550 w

1–8FM500 User's ManualIAM S/N Ratio Asynchronous and synchronous noisebetter than NAB recommendationsRF Bandwidth ±120 kHz, better than –35 dB±24

1–9Getting Acquainted1.4 Receiver SpecificationsMonaural Sensitivity (demodulated, de-emphasized)3.5 µV for signal-to-noise > 50 dB12.6 µV for sig

1–10FM500 User's ManualIIllustration 1–5 Sample Hazard AlertSevere shock hazard!Turn power off andwait approximately 1minute for capacitorsto di

2–1InstallationSection 2—InstallationThis section provides important guidelines for installing your trans-mitter. Review this information carefully f

2–2FM500 User's Manual2.1 Operating EnvironmentYou can install the FM transmitter in a standard component rack or on a suitablesurface such as a

2–3Installation115V230VIllustration 2–3Removing the Voltage Selection (red) AssemblyIllustration 2–2Opening the Power Connector Cover115V2.3 Power Con

iiRevision ControlRevision Print DateInitial Release (K80713–9) June 1996Revision 1 (101033–1) November 1996Revision 2 (101033–2) August 1997Revision

2–4FM500 User's Manual7. Turn the transmitter upside down and remove the bottom cover.Note: The front panel filter grill must be removed to expo

2–5Installation2.4 Frequency (Channel) SelectionYou may select an operating frequency of 87 to 108 MHz in the FM broadcast bandwith 100 kHz channel sp

2–6FM500 User's Manual3. Use small flat blade screwdriver or another suitable device to rotate theswitches to the desired setting. (The selected

2–7Installation2.4.2 RF Tuning AdjustmentsAll the RF stages are broadband to cover the 88 to 108 MHz broadcast band. TheRF amplifier stages require

2–8FM500 User's ManualTable 2–1 Receiver Frequency SelectionFrequency SW1 SW287.9 0 088.0 8088.1 0 188.2 8 188.3 0 288.4 8 288.5 0 388.6 8 388.7

2–9InstallationSevere shock hazard!Do not touch the innerportion of the RFoutput connectorwhen transmitterpower is on.WARNINGIllustration 2–10 RF Con

2–10FM500 User's Manual2.7 Audio Input ConnectionsAttach audio inputs to the Left and Right XLR connectors on the rear panel. (TheLeft channel au

2–11InstallationSCA INCOMPOSITE INMONITORRL23REMOTE I/ORIGHTLEFT/MONO1SCA Inputs(BNC) ConnectorsIllustration 2–12 SCA Input Connectors2.8 SCA Input C

2–12FM500 User's Manual2.10 Audio Monitor ConnectionsProcessed, de-emphasized samples of the left and right audio inputs to the stereogenerator a

2–13Installation2.13 Program Input Fault Time-outYou can enable an automatic turn-off of the carrier in the event of program failure.To enable this op

iiiContentsContentsContentsContentsContentsSection 1—Getting Acquainted ... 1–11.1 Your Transmitter ...

2–14FM500 User's ManualPin Number Function1 Ground2 (no connection)3 Composite Out (sample of stereo generator output)4 FSK In (Normally high; pu

3–1OperationSection 3—OperationThis section provides general operating parameters of yourtransmitter and a detailed description of its front panel dis

3–2FM500 User's ManualPossible equipment damage!Before operating the transmitter forthe first time, check for the proper ACline voltage setting a

3–3Operation8. Check the following parameters on the front panel multimeter:a. RF Power should be 500–550 watts.b. SWR should be less than 1.25 (A rea

3–4FM500 User's Manual3.2 Power Switches3.2.1 DC BreakerThe DC breaker, on the rear panel, must be on (up) for transmitter operation, evenwhen us

3–5Operation3.3 Front Panel Bar-Dot DisplaysBar-dot LEDs show audio input levels, wideband and highband audio gain control, andmodulation percentage.

3–6FM500 User's Manual3.4 Input Gain SwitchesThe “+6 dB” and “+12 dB” slide switches set audio input sensitivity according to thefollowing table.

3–7Operation3.7 RF Output ControlSet this control for the desired output power level. Preferably, set the power with anexternal RF wattmeter connecte

3–8FM500 User's ManualALC—DC gain control bias used to regulate PA supply voltage. With the PA powersupply at full output voltage, ALC will read

4–1Principles of OperationSection 4—Principles of OperationThis section discusses the circuit principles upon which thetransmitter functions. This in

ivSection 3—Operation... 3–13.1 Initial Power-up Procedures ...

4–2FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoco

4–3Principles of Operation4.2 Audio Processor Circuit BoardThe audio processor board provides the audio control functions of a compressor,limiter, and

4–4FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoco

4–5Principles of OperationIllustration 4–3 Stereo Generator Boardeach with a Q of 5. The 38 kHz and 19 kHz outputs of pins 1 and 20, respectively,are

4–6FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoco

4–7Principles of OperationU6 is programmed with the four or five rotary switches. The binary output of the0.1 MHz switch programs the “A” counter dir

4–8FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoco

4–9Principles of OperationThe DC voltage setpoint for U404A (reflected RF voltage) is one-fifth that of U404C(forward RF voltage). This ratio corresp

4–10FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoc

4–11Principles of Operation4.8 Voltage Regulator Circuit BoardThe voltage regulator board is the longer of two boards mounted under the chassistoward

vSection 5—Adjustments and Tests ... 5–15.1 Audio Processor Adjustments ...

4–12FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoc

4–13Principles of Operation4.11 RF AmplifierThe two RF power amplifier modules are mounted on a combiner board, heat sink,slide rail assembly which sl

4–14FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoc

4–15Principles of OperationGenerally, the voltage is around 0.5 volt DC for tuning 88.1 MHz, and from 5.5 to6.5 volts DC for tuning 107.9 MHz. The 10

4–16FM500 User's Manualinquestomondo,forse,unosidicesediciamochemascrivendoconinquestomondo,forse,unosidicesediciamochemascrivendoconmascrivendoc

5–1Adjustments and TestsSection 5—Adjustments and TestsThis section describes procedures for (1) advanced users who maybe interested in customizing or

5–2FM500 User's Manual5.1 Audio Processor Adjustments5.1.1 Pre-Emphasis SelectionSelect the pre-emphasis curve (75 µsec, 50 µsec, 25 µsec, or Fla

5–3Adjustments and Tests5.2 Stereo Generator Adjustments5.2.1 SeparationFeed a 400 Hz sine wave into one channel for at least 70% modulation. Observe

5–4FM500 User's Manual5.3 Frequency Synthesizer Adjustments5.3.1 Frequency (Channel) SelectionRefer to section 2.3.5.3.2 Modulation CompensatorRe

5–5Adjustments and Tests5.4 Metering Board Adjustments5.4.1 Power CalibrateWhile looking at RF Power on the digital panel meter, set the Power Calibra

Section 6—Reference Drawings ... 6–16.1 Views ...

5–6FM500 User's Manual5.5 Motherboard AdjustmentsFor Normal-Bypass switch setting, see section 2.10.5.6 Display Modulation CalibrationThe Modulat

5–7Adjustments and Tests5.9 Performance VerificationMeasure the following parameters to receive a comprehensive characterization oftransmitter perform

5–8FM500 User's Manual5.10 Carrier FrequencyCarrier frequency is measured at the output frequency with a frequency monitor orsuitable frequency c

5–9Adjustments and Tests5.14 Audio Frequency ResponseFor the response tests, take the readings from an FM modulation monitor.Make audio frequency resp

5–10FM500 User's Manual5.19.1 Main Channel Into SubFeed the left and right channels in phase with audio (L+R) at 50 Hz, 100 Hz, 400Hz, 1 kHz, 5

6–1Reference DrawingsSection 6—Reference DrawingsThe illustrations in this section may be useful for making adjust-ments, taking measurements, trouble

6–2FM500 User's Manual6.1 ViewsIllustration 6–1 Front ViewIllustration 6–2 Rear ViewFM500FM BROADCAST TRANSMITTER®PowerCarrierModulationFaultSt

6–3Reference DrawingsIllustration 6–3 Chassis Top ViewIllustration 6–4 Chassis Bottom Viewfront of transmitterPowerDistributionBoardPower RegulatorB

6–4FM500 User's Manual6.2 Board Layouts and SchematicsIllustration 6–5 Audio Processor Board

6–5Reference DrawingsL OUT+5V-5VD3D4FLAT A=075uSEC A=1.050uSEC A=0.6725uSEC A=0.33GAIN: U5, Pin 2 to U8, Pin 2(No Hi-band gain reduction)C11220P

1–1Getting AcquaintedSection 1—Getting AcquaintedThis section provides a general description of the FM500 trans-mitter and introduces you to safety co

6–6FM500 User's ManualIllustration 6–6 Stereo Generator Board

6–7Reference DrawingsSTEREO GENERATOROUTPUT+12V+6V+12V-12V 2 3184U4ATL072R1210.0K1%R11100D3R583.9KR5524.9KC261.0 2 3184U6ATL072C271.0R5724.9KR92K1

TOP SIDE COMPONENT MAP, FM-VFM EXCITER UNCONTROLLED UNLESS OTHERWISE MARKED IN RED BY CM AS A CONTROLLED COPY, COPIES OF THESE DOCUMENTS AND ASSOCIATE

DWG. NO.REV.A200440-SCHHGFEDCBA1 2 3 4 5 6 7 8 9 10 11 12HGFEDCBA1 2 3 4 5 6 8 9 10 11 12E . C . N. REV DESCRIPTIONAPPROVALSPECHK CMDATE DWNREVISION H

6–10FM500 User's ManualIllustration 6–8 RF Metering Board(Add 400 to component designators for schematic reference)D 8169-1

6–11Reference DrawingsMETERINGFAULT SUMSWR LAMPPADC LAMPLOCK LAMP+5VPATEMP LAMPR45010KD411J2-1J4-8J3-18J3-12J3-14J3-20/+28V INH1110U405E74HC14/LOCK+5V

6 - 12FM30/FM100/FM250 User's Manual

1 2 3 4 5 6 7 8 9 10 11 12ABCDEFGH121110987654321HGFEDCBADWG. NO. REV.1201207-SCHE . C . N. REV DESCRIPTIONAPPROVALSPECHK CMDATE DWNREVISION HISTORY65

Jumper FMA "E" FMA "T" FMA"T" FMA "R" FMA "Omnia" FMA "Omnia" FMX "E" FMX "

6–14FM500 User's ManualIllustration 6–10 Display Board(Add 600 to component designators for schematic reference)R27D 8167-5

1–2FM500 User's ManualI1.1 Your TransmitterThe FM500 is a member of a family of FM stereo broadcast transmitters. Crowntransmitters are known fo

6–15Reference Drawings"110"REDGRNGRNGRNGRNGRNGRN+5V+12V5.00V+12V+12VC6281.0UFL218L317L416L515L614L713L812L911L1010MODE9RADJ8ROUT7DHI6L11V-2V

Reference Drawings6 - 17

6–17Reference DrawingsVOLTAGE REGULATOR+6VVDDVSS+12VVCCR7231KDZ7011N47356.2VR722100KR713100KD7061N4148+12VR7091KR71610KD7071N4148PI11RST12Q47Q55Q64Q76

6–18FM500 User's ManualIllustration 6–12 Power Regulator Board

DWG. NO. REV.200915-SCHC1 2 3 4 7 8ABCDEF1 2 3 4 6 7 8ABCEF5THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OFINTERNATIONAL RADIO AND ELECTRONICS

6–20FM500 User's ManualIllustration 6–13 Power Amplifier(Add 1100 to component designators for schematic reference)R20R19

6–21Reference DrawingsFM500 POWER AMPLIFIERJ2L902R9034.7KC9040.01R90451T900C9000.01R90151C9010.01R90051C9030.01U900CA2832L90033uHR9022.75WRF DRIVER BD

6–22FM500 User's ManualIllustration 6–14 RF Output Filter(Add 1200 to component designators for schematic reference)P10421-9

6–23Reference DrawingsRF OUTPUT FILTER & REFLECTOMETER103209RF OUTC121147PF NP0R120310*R120275C12047.1PFC12069.3PFC12085.13PFL120394.1NHL120487.5N

Reference Drawings6 - 25

1–3Getting Acquainted1.2 Applications and OptionsCrown transmitters are designed for versatility in applications. They have been usedas stand-alone a

DWG. NO. REV.Q43310-4P1 2 3 4 7 8ABCDEF1 2 3 4 6 7 8ABCEF5THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OFINTERNATIONAL RADIO AND ELECTRONICS CO

6–26FM500 User's ManualFM500 CHASSIS WIRINGFM500 Chassis WiringC.Donner 2-23-98CROWN BROADCASTAC Input, Fuse, & FilterABCDDAGndGndRed

6–27Reference DrawingsIllustration 6–16 Receiver Board

6–28FM500 User's ManualReceiver

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

7–2FM500 User's Manual7.1 ServiceThe product warranty (see opposite page) outlines our responsibility for defectiveproducts. Before returning a

7–3Service and SupportThree-Year Limited WarrantyNorth America OnlySUMMARY OF WARRANTYWe, Crown Broadcast, a business unit of International Radio and

7–4FM500 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

Appendix–1FM500 User's ManualAppendixTransmitter Output Efficiency