Very Low System Delay
Granite systems are ideal fo HD image magnification (IMAG) productions, like projection, as they have only 1
frame of delay (33 mS in NTSC and 40 mS in PAL) with gen-locked cameras, even with format conversion
between 1080i, 720p and SD on inputs and on outputs, aspect ratio conversion on input and output, and video
inside a picture in picture box.
In contrast, conventional switchers usually add delay to convert an input format, convert an output format,
change an aspect ratio, or show video inside a picture in picture box. When several of these steps are done,
conventional switchers add a lot of delay, yet Granite adds none.
The only two circumstances where a Granite 5000 system adds delay, are two areas common to all equipment
from all manufacturers. First, when asynchronous sources are used, such as an inexpensive camera without
gen-lock, up to a frame of delay is added. Second, when video from M/E 1 is re-entered into M/E2, such as inside
a keyer, a frame of delay is added. Most IMAG applications do not use this operation, as they instead use 2 M/E
switchers to feed two screens, or one screen plus a TV or Internet output, and delay in not added in these 2
output cases.
Broadcast Pix Granite 5000 Installation Planning Guide Jan 2011
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