Masterclock TCR1000 Manual de usuario Pagina 14
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TCR1000UserManual–Rev.2.0.3 Page14
Configuration
Hardware
Input“TimeCode”Connection
TheTimeCodeinputisbalanced;assuchtheinputpolarityisnotcriticaltooperationoftheTCRcard.
Forsystemsdistributingsingleendedorunbalancedtimecodesignaltomultipledevices,itis
suggestedthatthesignaldistributionmethodbeconsistent.
AninsulatedBNCfemaleconnectorisprovidedasastandardconnectorfor2‐wiretimecodeinput.
TheTCR1000cardhasasingleBNCconnector.Alongwithcoaxialcabletodistributetimecodes
reservethecenterconductoroftheBNCastheTimeCodesignalandtheouterBNCconductorasthe
Time
CodeReference/SignalGND.
PartialMasterclock’sTCR1000timecodeinputcircuit
Anoptional3‐pinlockingheaderconnectorcanbeorderedattimeofpurchaseinsteadof
theBNCconnector.
InputImpedance
TheinputimpedancefortheTCR1000circuitisconsideredtoberelativelyhighatapproximately
100kΩ.Thishighinputimpedanceallowsforconnectingmultipletimecodedeviceson
thesame
signalpathwithoutloadingand/ordistortingtheinputtimecodesignal.
InputLevel
TheTCR1000firmwarewillautomaticallydeterminetheappropriategaincontrolsettingforyour
incomingtimecodedBlevelwithinrange(notoutsidetherangeof‐15and+20dB).
TheTCR1000requiresupto30seconds
tocompleteautomaticgaincontrolwhendecodingSMPTE
and(intheworstcase)uptothreeminuteswhendecodingIRIG‐B0/B1.Whenpropergaincontrolhas
beenachievedtheincomingtimecodeshouldbereadanddisplayedonthescreenwithoutany
hesitationsorjumps,andtheLEDonthecard
willlightsteady‐on.
TimeCodeInputSelect
TheTCR1000cardwillautomaticallydetectwhichformatoftimecodeisbeingprovidedtothecard
uponinitialpowerupwithavalidtimecode.Nouserhardwareadjustmentsarenecessary.
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