Grass Valley Trinix NXT v.3.3.1 - Manual (Page 159)

Trinix NXT — Installation and Service Manual 159
Sync Reference Connections
Figure 80. Dual Sync Reference Options
Two independent sync signals can be connected to the Trinix. They may be
different standards (for example, SD and HD) or different phases of the
same standard (for example, NTSC and delayed NTSC). For example, SD
sync could be used for one set of 32 outputs and HD sync for another set of
32 outputs.
Sync Connection to Control System
Outputs using the same reference as the control system (Sync 1 in this
example) will switch deterministically (i.e., perform frame-specific
switching). Outputs using the other reference will switch synchronously
and in the vertical interval but not deterministically. Which reference
should be connected to the control system depends on the reference types
involved:
• If SD and HD are used, SD is recommended for connection to the
control system.
• If different phases of the same reference are used, the phase that is most
delayed is recommended for connection to the control system.
• If NTSC and PAL are used, select the reference for those outputs where
determinism is most important.
Jupiter
Sync 1
Output
board(s)
on SL1
Output
board(s)
on SL2
Sync Lines
Sync 2
SMS MCPU
Sync 1
or
Encore SCB
OR
Sync Redundant switch = Off
Sync
1
2 1 Primary NR-33000
T T