evertz 4025TR Instruction Manual page 23

Model 4025TR Film Footage Encoder Manual
KeyKode numbers occur approximately every half foot on the film stock, so
the basic numbering of film edge numbers by the 4025TR is still driven
from the bi-phase input. The bi-phase base numbers are automatically
updated from incoming KeyKode, taking into account the mechanical offset
between the reader head and the gate, and other delays in the system.
The front panel contains a sixteen digit alphanumeric display to show the
Video and Audio time, and user bits, the LTC and VITC reader time and
user bits, the KeyKode numbers and the film Ink number. When the
4025TR is operated in local mode many of the functions can be accessed
from the front panel. The film key number of a reference frame may be
entered from the front panel keypad, or can be automatically updated from
the KeyKode reader in several ways. Ink numbers are entered from the
front panel. The Video and Audio time code numbers may be entered from
the front panel, or jam synced to the LTC or VITC time code readers.
When the 4025TR is controlled from KeyLog TRACKER™ most of the front
panel buttons are inactive, and all normal entry and control methods are
accomplished from the computer. A Local/Remote button on the front
panel allows the user to determine if the 4025TR will be controlled by the
front panel or from the KeyLog TRACKER™ GUI.
The linear time code output may be used as a bi-phase to LTC translator
providing a master time code reference for the integration of ATR chase
synchronizers into your system.
When film material is transferred to video disc, the relationship of the video
frames and picture frames is very important. If the video disc's frames do
not correspond exactly to the picture content (i.e.. film frames) then some
pictures will flicker when viewed in still. The default length of disc frames is
2 video fields. The 4025TR 'White flag generator' inserts a white level
pulse in the first video field of each new picture. As material is transferred
to disc, this pulse is used by the disc recorder to match the disc frames to
the 2/3 pulldown automatically. Still playback of all pictures on the disk is
jitter-free.
The Model 4025TR high resolution character generator provides separate
windows for video time and user bits, audio timecode, film edge numbers
(KeyKode) and absolute film frames from a reference. The four windows
can be separately positioned anywhere on the raster. Selection of 1 of 3
sizes, white or black characters, with or without background are
controllable using the on screen menu system. Characters may be keyed
into the picture to which the generator is locked, or a separate program
input.
When the 4025TR is operated from the KeyLog TRACKER™ GUI all of its
configurations and setups are loaded from the computer. The KeyLog
TRACKER™ software allows you to save separate setups for each client,
and automatically prompts to to load the correct setup when you open a
new project. When the 4025TR is operated in local mode, the powerful on
screen programming menu system, which uses the built in character
generator, provides a quick, intuitive method of configuring 4025TR Film
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