Multichannel Systems STG-Lite Manual - Manual (Page 21)

Use of STG-Lite
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A classic theta burst consists of four pulses at 100 Hz, repeated ten times with intervals of 200 ms,
for example.
Digital Sync Out: Synchronization of stimulation and recording
A TTL pulse is defined as a digital signal for communication between two devices. A voltage
between 0 V and 0.8 V is considered as a logical state of 0 (LOW), and a voltage between
2 V and 5 V means a logical state of 1 (HIGH).
The TTL output signal from Sync Out of the stimulus generator can be used for triggering external
devices, for example, the data acquisition with MC_Card or USB based data acquisition, and the
data processing with MC_Rack software of (USB-) ME-Systems and (USB-) MEA-Systems.
If you use MC_Rack for data proceeding you can trigger on the stimulation signals to synchronize
stimulation and data recording. Please see MC_Rack manual for detailed information. The TTL
pulse from the Sync Out of the STG will be delivered 100 ms before the stimulation signal, and
MC_Rack starts recording. There is one trigger signal for a single pulse, and one single trigger
signal for paired pulses and pulse trains respectively. The TTL trigger signal must be at least as
long as the stimulating signal, better longer. Otherwise the blanking circuit of the MEA1060 BC
amplifier will not be activated.