64Chapter4 AdjustmentsandSettingsforRecordingSetting Time DataThe camera provides time data such as time codes, userbits, time of day (real-time) data, which is recorded on eachframe alongside video data. It is also recorded as as datain clip metadata files.Time data overviewTime codeUse the TCG switch to select Rec Run or Free Run mode.• Free Run: The time code advances constantly whetherthe camera is on or not just like time itself. Recordingusing a slave-locked time code input to the TC IN orDVCPRO/DV connectors is also possible.• Rec Run: The time code advances only during recording.This will enable continuation of time codes in previouslyrecorded clips and when the power is turned off or newP2 cards are inserted to continue recording. NOTEThe following events will disrupt time code continuity.• When clips are deleted• When a 24P or 24PA frame rate is selected• When 24PN or 30PN (25PN) is selected• When a recording is interrupted by a REC WARNING or otherabnormalityUser bits• Two types of user bits are provided internally: (LTC UB:recorded as LTC, output via the TC OUT connectoras LTC embedded in HD SDI) and VITC (in DVCPROrecorded in the VIDEO AUX area and output as VITCembedded in HD SDI).• LTC UB enables the recording of user settings, time,date, time codes and similar values, the frame rate datafor camera capture and external input values (via TC INor DVCPRO/DV connector input).• VITC user bits record the frame rate data of cameracapture.• The user bits in clip metadata record the LTC UB value atthe start of recording.Date (real time)• The built-in clock calculates the year, month, day andtime from the internal clock to display on video in theLCD, viewfinder and VIDEO OUT and other video output.• The internal clock is not only used to calculate the freerun time code when the power is off and to set the userbit year, date and time, but also to set file creation dateswhen clips are recorded that determine the order ofthumbnails and playback order.• It is also used for generating clip metadata and UMID(Unique Material Identifier).For details, see [Setting Date and Time of Internal Clock](page 29).
