Table of Contents
Advertisement
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.
3.4.8. Selecting the Generator Drop Frame Mode (29.97 and 59.94 FPS video stds 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 HD9010TM-IRIG 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.
OPERATION
HD9010TM-IRIG HDTV Time Code Master / IRIG-B Reader Manual
The GEN VANC LINE menu item is used to select the line on which the
VANC IRIG packets will be inserted. The HD9010TM-IRIG 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
Revision 2.1
Page 3-7
Advertisement
Table of Contents
