Crown FMX250 Manual do Utilizador

iFM4000RF Transmitter PackageUser's Manual©2005 Crown Broadcast, a division of International Radio and Electronics, Inc.25166 Leer Drive, Elkhart

2–2FM4000 User’s Manual2.1 Operating EnvironmentYou can install the FM4000 transmitter in a standard 19–inch component rack ora cabinet or our own pre

2–3Installation2.4Pre-installation2.4.1Power Amplifier ModulesIf you have ordered a cabinet system, proceed to step 2.5. Each PA2000 incorporates eig

2–4FM4000 User’s ManualWARNING2.4.2 Hubble Twist Lock® Connector WiringPrepare the wiring for the Hubble Twist-Lock® connector in the following manner

2–5Installation2.4.3 System Wiring Refer to page 4-3 Section 4.2 Block diagram when connecting together the different components of the FM4000 system

2–6Installation4) Locate the cable assembly with the "N" type connectors that are connected together with a "N" style Female &quo

2–7InstallationIllustration 2-9 Output Combiner Mounting recommendation5) Locate and mount the combiner assembly, including the directional coupler,

2–8Installation2.5Installation

2–9Installation2.5.2 RF Output Connection The RF Output connection is on the end of the combiner that has the cooling fan block installed on it. See

2–10 2.6Remote I/O Connection

2–11InstallationPort BPin Description1 (PA1) RF Power - 1V = 1000 Watts of power2 (PA1) SWR - Calculated reading of SWR in VDC (1.00 VDC = 1.0 to 1.0

iiRevision ControlRevision Print DateInitial Release (Rev. 1) September 2005Important

3–1OperationSection 3—OperationThis section provides general operating parameters of your transmitter system and a detailed description of the front p

3–2FM4000 User’s ManualThese steps summarize the operating procedures you should use for the initialoperation of the power amplifier and power supply.

3–3Operation

3–4FM4000 User’s Manual3.2.1AC Input Power switchThe Transmitter Controller's AC power is controlled by a switch located on theAC input filter. T

3–5Operation3.3 Front Panel Controls and Display

3–6FM4000 User’s ManualThe Transmitter Controller has the ability to internally set the maximum RF output power for the 4000 watt system using the po

3–7Operation3.3.5 RF power reading and selector switchThe Transmitter Controller has a digital panel meter which displays Forward RF Power and Revers

3–8FM4000 User’s Manual3.4 Rear Panel connectionsThe Transmitter Controller has several types of connections on the rear panel of the unit. The follo

3–9Operation3.4.4 BNC ConnectorsThe Transmitter Controller has provisions for two BNC connectors on the back panel labled Fwd and Rev. Neither of the

4–1Reference DrawingsSection 4—Reference DrawingsThe illustrations in this section may be useful for makingadjustments, taking measurements, troublesh

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

4–2FM4000 User’s ManualIllustration 4–1 Front ViewIllustration 4–2 Back View4.1Views

4KCombinerAntennaTx #1I/OTx #1RFINDriverRFOUTTx #2RFINTx #1RFOutPS1ControlPS2ControlTx #2ControlTx #1ControlTx #2RFOutTx #2I/OTX #2RemoteInterfaceRemo

4-4FM4000 User's Manual4.3 Transmitter Controller Board Component ID

1 2 3 4 5 6 7 8 9 10 11 12ABCDEFGH121110987654321HGFEDCBADWG. NO. REV.A201233-SCHE . C . N. REV DESCRIPTIONAPPROVALSPECHK CMDATE DWNREVISION HISTORY65

4– 6FM4000 User's Manual

5–1Service and SupportSection 5—Service and SupportWe understand that you may need various levels of support orthat the product could require servicin

5–2FM1000A User's Manual5.1ServiceThe product warranty (see opposite page) outlines our responsibility for defectiveproducts. Before returning a

Service and support 5 – 3 Crown Broadcast Three Year Limited Product Warranty SUMMARY OF WARRANTY Crown Broadcast, IREC warrants its broadcast p

5–4Service and SupportTo obtain factory service, complete the bottom half of this page, include it with the unit, and ship to:International Radio and

G–2FM1000A User's ManualA B CAF Audio Frequency; the frequencies between 20 Hzand 20 kHz in the electromagnetic spectrum.ALC Automatic Level Cont

ivGlossaryIndex

G–3Glossaryexciter (1) A circuit that supplies the initial oscillator usedin the driver stage. (2) A transmitter configurationwhich excludes stereo ge

G–4FM1000A 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-iIndexAAAAAAC Power 1–5, 2-8AC power 2–4, 3-4ALC 2-11, 3-4, G-2Antenna 3–2, 4-3antenna 5–3BBBBBBoard Layouts 4-4CCCCCCircuit Breaker 3–2C

Index-iiRRRRRremote 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

Getting Acquainted1–1IINFORMATIONSection 1—Getting AcquaintedThis section provides a general description of the FM4000transmitter system and introduce

FM4000 User’s ManualI1–21.1 Your Transmitter PackageThe FM4000 is a highly efficient transmitter package designed to set a new standardin FM transmitt

Getting Acquainted1–31.2 Transmitter Package SpecificationsRF Power Output:400 to 4400 watts continuous with remotecontrolled power adjustRF Drive Req

FM4000 User’s ManualI1–41.3 Safety ConsiderationsCrown Broadcast assumes the responsibility for providing you a safe product andsafety guidelines duri

2–1InstallationSection 2—InstallationThis section provides important guidelines for installing yourtransmitter. Review this information carefully for