Calrec SUMMA, User Manual

Page: 54 / 198

SYNCHRONISATION
It is essential that all elements of a Hydra2 network are synchronised to the same clock source.
The Summa processing rack has five synchronisation inputs and six levels of synchronisation source priority. The sixth is
always set to ‘internal reference’, so that, as a last resort, if all other sync sources fail, Summa can always run off its own
internal clock. If a clock source does fail, Summa will automatically jump to the next sync source in the priority list. One is
the highest priority, six is the lowest.
Setting Synchronisation Source Priorities:
1. Tap SYSTEM SETTINGS in the top right of the touch display and select ‘synchronisation’ from the
menu.
2. Tap the selection cell for the sync priority level that you wish to alter. A pop-up appears with a scrolling menu
of possible sync sources. (The following figure shows the pop-up resulting from selecting sync source priority
4).
3. Tap to make your selection, scrolling down if necessary.
4. The pop-up closes and Summa refreshes and syncs to the highest priority viable source.
In ‘active Show’ view, the current sync source is always displayed
within the notifications area at the top right of the touch display.
54 SUMMA
Networked Audio Production System
SETTING UP