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OPERATION
3.10.5 Selecting the Film Type
Selection of the Film Gauge is performed using the Format menu displayed
on the character generator. Press the FORMAT key to access the Format
menu. Using the
&
keys to highlight the FILM TYPE menu item and press the SELECT key to
show the FILM TYPE sub menu. The currently programmed film type is
shown in reverse video. Press the
the desired film type. Press the FORMAT or CLR keys to exit the format
menu, or press the SELECT key to return to the FILM drop down menu.
•
Select 35 MM 16 FR/FT if you are using normal 4 perf 35
mm
•
Select 16 MM 20 FR/KEY if you are using 16 mm film stock
with key numbers every 20 perforations. (Use this setting for
KeyKoded film stocks.)
•
Select 16 MM 40 FR/FT if you are using 16 mm film stock
with
3.10.6 BCD or Binary Edge Number Encoding?
Film stock manufacturers traditionally have each had their own method of
numbering the film stock, some having 4, 5, 6 or 7 counting footage digits
with varying numbers of fixed alpha-numeric roll numbers, or prefix
numbers to the footage. Using normal BCD encoding, there is only room to
encode a maximum of 6 digits of film feet plus 2 digits of frames into the
user bits. By utilizing a compressed binary format, up to 7 digits of feet
plus frames can be encoded, along with the pulldown information, however,
special decoding routines in the time code readers such as the
Afterburner will be required to recover this information and display it as
decimal digits.
Selection of the BCD or Binary encoding style is performed using the
Format menu displayed on the character generator. Press the FORMAT
key to access the Format menu. Using the
FILM menu. Use the
and press the SELECT key to show the EDGE STYLE sub menu. The
currently programmed edge encoding style is shown in reverse video.
Press the
&
keys to select GENERIC or EVERTZ style.
Select GENERIC if you want to use standard BCD encoding which can be
read by most readers. (See section 3.9.1 for a discussion on how timecode
readers built in to VTR's handle Film edge numbers.) When Generic style
is used, 6 digits of Edge number information plus frames will be placed into
the user bits in the EDGE modes. Maximum footages of 4, 5 or 6 digits
may be used. Digits that are not used for footage numbers are utilized for
the prefix number.
Select EVERTZ if you want to use binary encoding to compress more data
into the available space. When EVERTZ style is used, 7 digits of edge
number information plus frames will be placed into the user bits. Maximum
Model 4025 Film Footage Encoder Manual
keys drop down the FILM menu. Use the
&
keys one or more times to select
film stock.
key numbers every 40 perforations.
&
keys to highlight the FILM TYPE menu item
&
keys drop down the
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&
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