User manual

TCR1000UserManual–Rev.2.0.3 Page14
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Configuration
Hardware
Input“TimeCode”Connection
TheTimeCodeinputisbalanced;assuchtheinputpolarityisnotcriticaltooperationoftheTCRcard.
Forsystemsdistributingsingleendedorunbalancedtimecodesignaltomultipledevices,itis
suggestedthatthesignaldistributionmethodbeconsistent.
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AninsulatedBNCfemaleconnectorisprovidedasastandardconnectorfor2‐wiretimecodeinput.
TheTCR1000cardhasasingleBNCconnector.Alongwithcoaxialcabletodistributetimecodes
reservethecenterconductoroftheBNCastheTimeCodesignalandtheouterBNCconductorasthe
Time
CodeReference/SignalGND.
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PartialMasterclock’sTCR1000timecodeinputcircuit
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Anoptional3‐pinlockingheaderconnectorcanbeorderedattimeofpurchaseinsteadof
theBNCconnector.
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InputImpedance
TheinputimpedancefortheTCR1000circuitisconsideredtoberelativelyhighatapproximately
100kΩ.Thishighinputimpedanceallowsforconnectingmultipletimecodedeviceson
thesame
signalpathwithoutloadingand/ordistortingtheinputtimecodesignal.
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InputLevel
TheTCR1000firmwarewillautomaticallydeterminetheappropriategaincontrolsettingforyour
incomingtimecodedBlevelwithinrange(notoutsidetherangeof‐15and+20dB).
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TheTCR1000requiresupto30seconds
tocompleteautomaticgaincontrolwhendecodingSMPTE
and(intheworstcase)uptothreeminuteswhendecodingIRIG‐B0/B1.Whenpropergaincontrolhas
beenachievedtheincomingtimecodeshouldbereadanddisplayedonthescreenwithoutany
hesitationsorjumps,andtheLEDonthecard
willlightsteady‐on.
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TimeCodeInputSelect
TheTCR1000cardwillautomaticallydetectwhichformatoftimecodeisbeingprovidedtothecard
uponinitialpowerupwithavalidtimecode.Nouserhardwareadjustmentsarenecessary.
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