Multichannel Systems USB-MEA32-STIM4 Manual - Manual (Page 37)

Recording and Stimulation
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With these settings, a Sync Out will automatically be generated for each programmed
stimulation pulse, and each of the four available triggers will start one stimulation channel
and the corresponding Sync Out. Please see the MC_Stimulus II manual for detailed description
of Auto Sync and Trigger Settings function.
It is now possible to start and stop each channel and the corresponding Sync Out individually
with the four start stop buttons for the four internal triggers. An orange control LED indicates
an active stimulation channel.
The regular Start / Stop buttons will start and stop all channels. Please remember downloading
the stimulation pattern after each change with the Download or Download and Start buttons.
5.2.4 Triggering on Sync Out in MC_Rack
The Sync Out channels 1 to 4 show up in MC_Rack on the bits 0 to 3 of the digital channel.
To trigger on those, use a Trigger Detector in MC_Rack set on the digital channel. To trigger
on one Sync Out, select the appropriate bit, as shown below for Sync Out 1. To trigger on any
Sync Out, unmask bits 0 to 3 and set the condition to > 0. Please see the screen shots below.
Sync Out 1 bit 0
Sync Out 2 bit 1
Sync Out 3 bit 2
Sync Out 4 bit 3
Trigger only on Sync Out 1 Trigger on Sync Out 1, 2, 3 or 4
For more details on triggering on the digital channel, please read the MC_Rack manual.