Selecting The Generator Drop Frame Mode (Ntsc Only) - evertz 4025TR Instruction Manual

Film footage encoder
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OPERATION
The numeric keys return to their normal functions when the data entry has
been completed by pressing the ENTER key or cancelled by pressing the
CLR key. The display prompt will return to its steady on state when data
entry mode has been completed.
Numeric entry mode must be terminated (the display prompt will be on
steady) before any of the front panel keys will resume normal operation.

3.9.5 Selecting the Generator Drop Frame Mode (NTSC only)

Use the Codes tab of the configuration screen to configure the time code
drop frame modes.
In NTSC, the video frame rate of approximately 29.97 frames per second
causes an error between real time and 'colour time'. To overcome this
problem, the drop frame mode was created. This mode compensates for
the approximate 4 minute per day error by dropping the first two frame
counts (0, 1) at the start of each minutes, except minutes 0, 10, 20, 30, 40,
and 50. A drop frame flag bit is set in the code when the drop frame format
is used. When the 4025TR is operating in the NTSC video standard, the
Video and Audio generator may be programmed to operate in either the
drop frame or non drop frame mode.
Selection of the desired drop frame mode for the generators is performed
using the setup menu displayed on the character generator. Press the
SETUP to access the setup menu. Using the " & # keys drop down the
TIMECODE menu.
FRAME or AUD DROP FRAME menu item and press the SELECT key to
show the drop frame sub menu. The currently programmed generator drop
frame mode is shown in reverse video. Press the $ & % keys to select the
desired mode of operation. Press the SETUP or CLR keys to exit the
setup menu, or press the SELECT key to return to the TIMECODE drop
down menu. See section 3.3 for more information about the various time
code modes.
When the generators are slaved to one of the readers, their drop frame
mode is the same as the incoming reader data. The Drop Frame sub
menu shows JAM LRDR or JAM VRDR. When the 4025TR is operating in
the PAL video standard, the Drop Frame sub menus shows NOT
AVAILABLE.
Model 4025TR Film Footage Encoder Manual
Use the $ & % keys to highlight the VID DROP
Page 3-40

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