Re: Using timecode, LTC, SMPTE on a film set

Time-code is a way of "stamping" a clock time to be used as a reference point in media data.
Normally "time of day" is used in 24hr mode, so ALL the recorders (camera/s, video + audio) have the same time-code at the same time during a shoot so shots can be retrieved at a later time.
LTC (longitudinal / linear TC) is now a thing of the past and suited to tape based shooting.
During a shoot all recorders are referenced to a master time clock [normally the main camera or TC slate], all the recorders then operate in 'free run' mode and every few hours [meal & coffee breaks] they are then jambed synced to maintain alignment or via a RF time code sender.
The DA or 'script chick' and use a standard digital wrist watch to then log the useable takes as this will be set to time of day which is also TC time.
In post all the required material audio / video is brought into an editing time line using the TC as an alignment tool, clapper boards etc are then used to perfectly align the various tracks.

DSLR cameras do not have time-code so other methods are used to sync the audio to video.

I hope this basic overview helps with your question....