User manual

CLKTCDSeriesUserManual–Rev.2.0.1Page8
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Introduction
TheCLKTCDisaprecisionanalogclockcontainingasteppermotordriveandadvanced
microprocessorcontrolledelectronics.
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IRIG‐B
DefinedbytheRangeCommandersCouncil,U.S.ArmyWhiteSandsMissileRange.IRIG(Inter‐
rangeInstrumentationGroup)isusedbymilitary,government,powerindustryandmanyother
commercialandindustrialapplications.TheCLKTCDdecodesIRIG‐Binbotha1kHzmodulated
(IRIG‐B1)andun‐modulated/pulsewidthcoded/DClevelshifted(IRIG‐B0)format.Allformatsof
IRIG‐BtimecodedecodedbytheCLKTCDusethetimeofyearinformationBCD(BinaryCoded
Decimal).AllformatsofIRIG‐BtimecodedecodedbytheCLK
TCDalsousetheextended
year/dateandtimezoneinformationinthecontrolfunctionsasdefinedbytheIEEE1344
specification.SBS(StraightBinarySeconds)informationisnotdecoded.Manchester
format/encodingisnotsupported.
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TheCLKTCDcanbeconfiguredforworld‐widetimezoneoffsetandautomaticDST(DaylightSaving
Time)adjust
mentandallowsforreliable,accurateandmaintenancefreeoperation.Useofthe
automaticDSTfeaturerequiresthattheclockbeenabledtoacceptthetimecodedateencoding,
usingtheUSBportandCLKTCD‐Set(ClockTimeCodeDisplay)USBConfigurationUtility(i.e.Windows
softwareapplication).Thetimecodereferencemustprovidedateencodinginthecontrolbits/fields
totheMasterclock/LeitchdateencodingstandardforSMPTEortheIEEE‐1344yearencodingfor
IRIG‐B.
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SMPTE
SocietyofMotionPictureandTelevisionEngineersformatisavailableinframeratesof24,25,and30
framessecond.TheCLKTCDtimecodeclocksupportsallthreeformats.
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AllformatsofSMPTEtime
codedecodedbytheCLKTCDusethefulldateinformationintheuserbitsasdefinedbyLeitch,Inc.
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TheCLKTCDdoesnotsupportdecodingofSMPTEdrop‐frame,reverserunning,VITC,NTSC,
colorframe,blackburstorothervideotimecodeformatsandsynchronizationoptions.
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Pleaserefertothe“Specifications”sectionofthisdocumentforadditionaldetailson
eachmodel.Foravailableoptions,visitMasterclock’swebsite:www.masterclock.com
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Features
• RTC(RealTimeClock)backupretainstimeduringlossofpowerorreference.
• Self‐correctinghandsoncepowerand/orTimeCodereferenceisestablished.
• Timezoneoffsets(toonesecondresolution)supportsanybiasingrequirements.
• DSTconfiguration.
• TCXO(TemperatureCompensatedCrystalOscillator)for+/‐1minyearaccuracywithno
referencein(freewheeling).
• Allconfigurationsettingsretainedinnon‐volatileflashmemory.
• SecondHandwithsweeporstepoption.
• Self‐correctinghandsafterlossofpowerand/ortimecodereferenceandDSTchanges.
• StatusLED(LightEmittingDiode)onclockface,locatedatthe6o’clockposition.