Tc slip

This allows for a difference in fields between the playback vtr timecode and the playback video entering the room.
Video transports should always have a slip of zero, unless there is a delay, for example, a frame based decoder.
Audio decks can suffer from a 'real' slip in their TC due to their mechanical setup or errors when shooting and this can be compensated using Tc slip instead of adjusting the In point.

When setting up the vtr for the first time the value for TC SLIP should always be 0. If it is not then the value for EDIT OFFSET above will have been set incorrectly. If a deck needs to be slipped then this value can be adjusted. As this is in fields it should never be an odd number.

Record slip

The Record slip allows for a difference in fields between the record vtr timecode and the video frame when it reaches the recorder.
The slip should always have a slip of 0, unless there is a delay, for example a frame based encoder.
Then it would be set for an individual vtr to ensure that it recorded the correct frame at it's In point.