Overview - evertz 4025TR Instruction Manual

1. OVERVIEW

OVERVIEW
The Model 4025TR Film Footage Encoder is designed specifically to aid in
the encoding of film footage and time code during the film to tape transfer
process. The Model 4025TR is a generator/reader for SMPTE/EBU Linear
Time Code (LTC) and Vertical Interval Time Code (VITC), and contains a
high resolution video character generator (VCG). The VCG is also used as
an on screen programming aid to the many operational modes of the Model
4025TR. The 4025TR allows the user to encode Video and audio
timecode, and KeyKode or Ink number information into vertical interval
timecode in the 3 line VITC industry standard encoding scheme. In addition
other VITC encoding schemes, compatible with earlier version of the Film
Footage encoder can be used. The Model 4025TR uses the latest state of
the art technology, combined with our extra intelligent firmware, to offer you
the ultimate in performance, reliability, and adaptability.
The 4025TR Film Footage Encoder is designed to be operated from the
Windows 95™ graphical user interface KeyLog TRACKER™.
TRACKER™ provides a centralized control surface for the 4025TR
allowing the user to save customized 4025TR configurations for each
transfer project. Transfer data such as Video and Audio timecode,
KeyKode and Ink code along with production data such as Camera Roll,
sound Roll, Scene, Take, etc. are logged using KeyLog TRACKER™.
Reports and Film Transfer lists to interface to non-linear editing systems
are only a few of the features of KeyLog TRACKER™.
information about operating KeyLog TRACKER™ consult the KeyLog
TRACKER™ manual or the on-line help provided with the program. The
4025TR can also be controlled from the front panel in Local mode. Most of
the features available in the previous model 4025 are available in local
mode. The KeyLog TRACKER™ GUI must be used in order to invoke the
many advanced features that have been added to the 4025TR.
The 4025TR Film Footage Encoder is capable of working with both 35 mm
and 16 mm film. Telecine transfer speeds of 24 or 30 frames per second in
NTSC systems, or 25 frames per second in PAL are automatically sensed
by the 4025TR.
Film is typically viewed at 24 frames per second (fps) while NTSC video is
viewed at 30 fps. To compensate for this difference in the frame rates,
telecines use a 2/3 pulldown. Since each video frame is comprised of two
video fields, video is viewed at 60 fields per second. Telecines can transfer
24 film frames to 60 video fields (30 video frames). The resulting ratio is
24:60 or 2:5, which means 2 film frames every 5 video fields. The 2/3
implies that one of the film frames is transferred to 2 video fields, the
following film frame is transferred to 3 video fields, and so on.
A video frame is always comprised of a field 1/field 2 sequence, and is
defined by a unique time code number. The film frames will not always be
in phase with the video frames. With the 2/3 pulldown, the film frames
alternate between being 2 video fields long and 3 video fields long.
Model 4025TR Film Footage Encoder Manual
KeyLog
For specific
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