Multichannel Systems STG4004+STG4008 Manual - Manual (Page 64)

Stimulus Generator 4000 Series Manual
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10.3 Trigger Settings
Triggering output channels (Standard mode)
You can use up to four or eight separate trigger inputs for triggering up to four or eight output
channels (STG4004 or STG4008, respectively).
The trigger settings are saved in the currently active MC_Stimulus II (*.stm) file. Please assign the
four triggers to the analog output channels in the Trigger Settings dialog box in the Edit menu.
In the preceding example, trigger input 1 is used to trigger the output channels 1, 3, and 6.
This means, each time a TTL pulse is applied to Trigger In 1, stimulation on channels 1, 3, and 6
is started simultaneously. The complete protocols of these three channels would be executed
three times after the trigger event, if continuous mode would be off. However, as continuous
mode is activated, trigger repeats are disabled and the protocols will be repeated indefinitely,
until a manual stop occurs.
Important: Only channels assigned to the same trigger have the same time base. Between
channels assigned to different triggers, time shifts in the order of the STGs time resolution
(20 μs) may occur.
The Sync Out outputs are assigned to their default trigger inputs, that is, Sync Out 1 is active
when trigger 1 is active, and so on. You can change this assignment with the option buttons,
for example, assign multiple Sync Outs to the same trigger.
The Sweep status light (LED Start / Stop buttons) indicates the trigger numbers that have been
assigned to active channels.
Example: If channels 1 and 3 are assigned to trigger 1, and trigger 1 is started (either by the
software controls, the Start button on the stimulus generator's front panel, or the trigger
input 1), the first Sweep status lamp indicates the active state of channel 1 or 3, even if one
of the two channels has a shorter output sweep than the other and is not active anymore.