Masterclock TCR1000 Uživatelský manuál stáhnout pdf (Strana 14)

TCR1000UserManual–Rev.2.0.3 Page14



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.



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.



PartialMasterclock’sTCR1000timecodeinputcircuit



Anoptional3‐pinlockingheaderconnectorcanbeorderedattimeofpurchaseinsteadof

theBNCconnector.



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.



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).



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.



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.



1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

Žádné komentáře

Masterclock TCR1000 Uživatelský manuál Strana 14