Grass Valley Trinix NXT v.3.3.1 - Manual (Page 169)

Trinix NXT — Installation and Service Manual 169
Sync Reference Connections
board in the Primary slot will feed Sync Lines 1 and 2; the NR board in the
Secondary slot will feed Sync Lines 3 and 4.
• If the Primary NR is removed, Sync Lines 1 and 2 will automatically
switch to the SR-33500.
• If the Secondary NR is removed, the SR will feed Sync Lines 3 and 4.
See Sync Connection to Control System on page 159 for information con-
cerning which of the four sync references should be connected to the
control system.