NewTek TriCaster 855 - Manual (Page 152)

Page | 136
VERTICAL POSITION, HORIZONTAL POSITION AND PHASE
Locking all devices to house sync is important, but this alone does not actually ensure a perfect
downstream match. Consider an army marching along: each step the soldiers take occurs at
precisely the same moment, so we could say their timing is synchronized.
Even so – problems result if one soldier leads with the left foot while everyone else is on the
right. Or perhaps everyone is evenly spaced and perfectly aligned but for one misfit who
‘tailgates’ the soldier ahead of him and keeps stepping on his heels.
This is essentially why TriCaster provides
several adjustments in its Genlock section.
The Horizontal and Vertical Position settings
pin the image in the proper space in the
frame, and in doing so could be likened to
making sure each marching soldier is in
position relative to his fellows (as viewed
from above). The Phase setting ensures
proper color alignment, corresponding to
making sure everyone is on the left or right
foot at the same time.
Altogether then, the Vert Position, Horiz
Position and Phase settings allow you to
tweak synchronization to arrive at an
optimum match between devices. Typically, these settings are fine-tuned with the aid of a
downstream Vectorscope and Waveform Monitor. (A discussion of these adjustments goes
beyond the scope of this manual, but a quick online search for the keywords “genlock” and
“adjust” turns up a number of excellent references).
REFERENCE TYPE
The ‘bi-level’ reference signal long used for standard definition television is often used for
genlocking both SD and HD installations. However, if you are supplying an HD reference signal to
TriCaster’s Genlock Input (and your other equipment), select the HD (Tri-level) switch in the
Reference Type area of TriCaster’s Genlock settings.
Figure 133