NIRStar 14.1 - User Manual
Page 40 of 124
6 Additional Menu Bar Items
6.1 Digital I/O
This option is available only in conjunction with the NIRScoutX instrument series.
In addition to the capability of receiving digital input signals for the purpose of experiment timing that all
NIRS instrument possess, NIRScout Extended systems also have the capability to send out hardware
timing signals. This capability expands experimental design because in addition to receiving timing
signals, in conjunction with NIRScoutX device the NIRStar software can also serve as the main control
instance of the experimental setup.
Possible application examples include the orchestration of other devices included in the experimental
paradigm, such as stimulus-generating equipment, e.g., magnetic stimulation, electrical stimulation, etc.
One particular example is the use of a pulsed laser source for combined optogenetics/NIRS studies. In
this case, the TTL trigger input of a diode laser module (optional equipment NIRx DL-473, 473 nm
0...100mW optical power, fiber-coupled output) is connected to one of the NIRScoutX digital output
lines. Whenever this port is in a ‘high’ state, the laser source will be activated, and optogenetic processes
Figure 24. Digital I/O interface
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