User manual

CLKTCDSeriesUserManual–Rev.2.0.1Page15


HandPosition
Thehandswillsetadjusttothetimecodereference,plusanytimezoneand/orDSToffsets.

Ifforanyreasontheclockhandsbecomeslightlyoutofalignment,acalibrationsettingfunctionhas
beenprovidedinCLKTCD‐Setconfigurationutilityorusingthebuttonslocatedontheback.


ThehandsoftheCLKTCDcannotbesetmanually.Donotattempttoopentheclocktoaccess
thehands.Thisactionwillvoidyourwarranty.Thisdevicehasnouserserviceableparts
inside.

TheCLKTCDseriescanbeconfiguredusingoneofthefollowingmethods:
• DIPSwitchesandbuttons.
• CLKTCD‐Set,USBConfigurationUtilityviatheUSBport.


Pleaserefertothe“Configuration”sectionofthisdocumentforadditionaldetailson
howtoadjustthesettings.



Iftheconfigurationsoftwareisusedtoconfiguretheclock,theDIPswitchsettingswill
beignoredorover‐ridden.Inordertorestoretheconfigurationmodetotheuseofthe
DIPswitches,theunitmustbeResettothefactorydefaultmode.


TimeZoneOffsets
AlltimecodeanalogclocksmaintaintimeasUTC.

Atimezoneoffsetorbiascanbeusedtoadjustthetimefordisplaypurposes.Abiascanbesetasa
positive(+)offsetindicatingthattheunitleadstheUTCtimeornegative(‐)offsetvalueindicatingthe
unitlagsbehindUTCtime.Anoffsetwitharesolutionofonehalfhour(viaDIPswitches)or1second
(viaCLKTCD‐Setconfigurationutility)canbeachieved.


IfthetimecodeinputtotheADC‐A12C31isnotUTC,donotadjustthetimezoneand/or
DSToffset.


DaylightSavingTime
AnautomaticDSTsettingcanbeconfiguredseparatelyandinadditiontoatimezoneoffset.

ForSMPTEtimecodes,datemustbeencodedtotheLeitchspecification.IRIG‐Bdatedecodingis
supportedfortheIEEE1344standard.


TheincomingtimecodemusthavethedateencodedinaformatrecognizedbytheCLKTCD
forDSTadjustmentstobeperformed.ForbestreliabilityMasterclockrecommendsatime
codereferencethatencodesfulldateinformation,suchastheMasterclockGPS200Atime
codegenerator.


