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GEN VANC LINE
Vanc line = 9
This menu item controls the location of the VANC data packet only. The location of
the ATC packets are fixed by SMPTE RP188 and will be located on lines 9 and 10 in
the HANC area.
3.5.6. Selecting the Generator Drop Frame Mode
(29.97 and 59.94 FPS video standards only)
In the 29.97 and 59.94 frames per second video standards, the time code frame rate of approximately
29.97 frames per second causes an error between real time and 'video time'. To overcome this
problem, the drop frame mode was created. This mode compensates for the approximate 86 seconds
per day error by dropping the first two frame counts (0, 1) at the start of each minute, 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 HD9010-SIE is operating in the 29.97 and 59.94 frames per second video standards, the
generator may be programmed to count in either the drop frame or non-drop frame mode.
GEN DROP FRAME
Drop frame: off
Drop frame: on
Drop frame: convert
Drop frame: jamming
Not applicable
The AUX LTC output will normally output nominal 24 FPS time code that is concurrent
with the nominal 30 FPS timecode on the main LTC. When the main LTC output is in
the Drop Frame counting mode, the AUX LTC output will be muted as there is no 24
FPS equivalent.
OPERATION
HD9010-SIE High Definition Source ID Encoder Manual
The GEN VANC LINE menu item is used to select the line on which the
VANC packets will be inserted. The HD9010TM keeps track of the
lines for each video standard; you will have to set the line numbers
separately for each video standard.
The VANC packets can be inserted in the vertical interval between the
second line after the vertical interval switch line (line 9) and the
beginning of active picture
The GEN DROP FRAME menu item is used to the desired drop frame
mode for the generator.
Select Drop frame off to configure the generator in the non-drop frame
or 'full frame' mode.
Select Drop frame on to configure the generator in the drop frame
mode.
Select Drop frame convert to configure the HD9010-SIE to operate in a
special Drop Frame conversion Mode. See section 3.5.6.1 for more
information on using the Drop Frame Conversion Mode.
When the HD9010-SIE is in the continuous Jam Sync mode, the
generator drop frame mode is the same as the incoming time code
data. The Drop Frame sub menu shows Drop frame jamming.
When the HD9010-SIE is operating in the 24, 25 or 50 frames per
second video standards, the Drop Frame sub menu shows Not
applicable.
Revision 1.2
Page 3-5
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