Sound Devices 774T, Руководство пользователя и техническая информация

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Jam Zeros
This menu selection resets the internal generator to zero.
744T current timecode value
menu selection
value to jam, or zeros
press to jam
Jam Value
Press enter (tone key) or the Rotary Switch button to jam the user-entered time code start value into
the internal generator.
Edit Value
This menu allows the user to set any valid time code value (
00:00:00:00–23:59:59:29
) for entry
with the jam value selection above. The initial screen of this menu shows the currently set value as
well as the current time code setting of the 744T. Press the Rotary Switch or the enter key (tone key)
to enter into edit mode. The user can set the time code numbers in pairs (hours, minutes, seconds
and frames). Once
(DONE)
is selected the value is available to jam into the internal generator with
the jam value selection.
A value is not jammed into the 744T time code generator until
JAM VALUE
is selected.
User Bits
The 744T has seven user-selectable user bit modes. Time code user bits are a portion of the time code
data which can be allocated however the user chooses. Commonly, user bits carry information such
as the date, take, sound roll, or camera roll number.
User bits are edited from the
EDIT U-BIT
selection in the jam menu. Press enter (tone key) or the
Rotary Switch to enter user bit edit mode. The screen will show the format and setting of the user
bits. Using the Rotary Switch or the soft-button up and down arrows, user bit digits can be edited (in
pairs). Once
DONE
is selected, the user bits are set. If editing is not available in the selected user bit
mode “
NO USER EDITS
“ will appear in the screen.
NTSC Standard Def Video Production
NTSC video uses a frame rate of 29.97 frames per second. Unfortunately, that leaves 108 frames per
hour unaccounted. To keep 29.97 time code in sync with “clock” time, the concept of “drop frame”
was devised. Two frames are dropped at the top of each minute not divisible by 10. 54 drops per
hour x 2 frames = 108 frames per hour.
To sync the 744T to a video camera, fi rst determine if the camera is in drop frame or non-drop frame
mode. If you, the DP or the producer are unsure about what setting to use, check with post-produc-
tion, if possible.
As a rough guideline, video for NTSC broadcast is drop-frame. Whether at drop or non-drop rates, make
certain all time code devices are at the same rate.