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800581-2.11 NeurOne System User Manual.doc
a single sample triggering information will be lost. If more accurate timing information is
needed, it’s advisable to use the Triggers packet which enables microsecond accuracy.
If trigger must occur on the sample of the rising edge the system must stall digital out sample
delivery in order to deliver the trigger on the correct sample (t
rise
). Alternatively, the trigger
can be delivered on the sample it is accepted on, i.e. the sample when trigger pulse length is
satisfied on (t
accept
) (see Figure 1).
Figure 1. Trigger signal rising edge and accept timing.
Each trigger sample has the following information:
Bits
Name
Description
0
Res
Reserved for future use
1-2
Ai/Ao
Isolated A in (bit 1) / out (bit 2)
3-4
Bi/Bo
Isolated B in (bit 3) / out (bit 4)
5
SBB
SyncBox button
6
SBEi
SyncBox external trigger in
7
Res2
Reserved for SyncBox external trigger out
8-15
Par8
8-bit trigger code
16-23
Res3
Reserved for future use
Trigger Packets
This packet contains information about one or more trigger events registered by the
measurement hardware. The emission of this packet is optional and may be enabled /
disabled. By default this packe
t isn’t emitted.
The Trigger packet structure is shown below:
