Example
It could be required to start the acquisi on on all the channels of a mul -board system as soon as one of
the board channels (board “n”) crosses its threshold. Trigger Out signal is then fed to an external Fan Out
logic unit (e.g. CAEN V2495 board); the obtained signal has then to be provided to the external trigger
input TRG-IN of all the boards in the system (including the board which generated the Trigger Out signal).
In this case, the programming steps to perform are therea er described.
1. Register 0x8110 on board “n”:
- Enable the desired self-trigger as Trigger Out signal on board “n” (by bits[3:0] mask).
- Disable So ware Trigger, External Trigger as Trigger Out signal on board “n” (bits[31:30] = 00).
- Set Trigger Out signal as the OR of the enabled self-trigger on board “n” (bits[9:8] = 00).
2. Register 0x811C on board “n”:
- Configure the digi zer to propagates on GPO the internal trigger sources according to the 0x8110
se ngs (i.e. the enabled self-trigger, in the specific case) on board “n” (bits[17:16] = 00).
3. Register 0x810C on all the boards in the system (including board “n”):
- Enable External Trigger to par cipate in the board common acquisi on trigger, disable So ware
Trigger and the channel self-triggers (bits[31:30] = 01; bits[3:0] = 0000).
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UM3247 - N6724 User Manual rev. 10
