Grass Valley Trinix v.2.4.1 - Manual (Page 109)

Sync Reference Connections
Planning and Installation Manual 109
DV-33128 / DV-33256 with Dual Sync References
Figure 48.
Two independent sync signals can be connected to the Trinix. They may
be different standards (e.g. SD and HD) or different phases of the same
standard (e.g. 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 out-
puts.
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 synchro-
nously and in the vertical interval but not deterministically. Which ref-
erence 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