Optogenetics TTL Pulse Generators

Optogenetics TTL Pulse Generators
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  • The optogenetics methods use light pulses to modulate the activity of genetically engineered light-sensitive neurons or other cells. Even the most straightforward optogenetics experiments require a programmable TTL Pulse Generator to modulate LED or laser diode drivers and create a desired light pulse train. 

    Some solid-state lasers that cannot be electronically modulated use mechanical light shutters instead. However, LED- or laser-diode-based solutions are preferred to pricey solid-state lasers due to the short lifespan of those shutters. 

    Our miniature Optogenetics TTL Pulse Generator can be used to output continuous signals or sequences of square pulse trains.  It can also input digital signals from an external device for triggering or synchronization.  The inputs and outputs can be saved into a file for further data analysis (i.e. behavior timestamps).  It is controlled by Doric Neuroscience Studio software and connects to a computer with a USB cable and to external devices with BNC cables.

    Any TTL pulse generator channel can be assigned to a LED driver or used as a trigger for other channels.

    Example: Four-channel pulse generator (OTPG4) can control the modulation of two LED drivers with channels 1 and 2 while channels 3 and 4 are used as inputs for respective triggers.

    If your application requires control of the device with another software, we can provide the API to control from Matlab, Python, or C++, please contact our technical support for more details.

  • Computer Interface
    USB 2.0
    TTL level
    HI > 3.3 V
    LOW < 1.5 V
    Minimum pulse duration 0.017 ms
    Time Resolution Accuracy 0.001 ms
    Pulse Frequency up to 5 kHz
    Output Voltage TTL 5.0 V (high impedance)
    Output Current max 20 mA per channel
    Input Voltage 0 to 5.0 V (maximum)
    Current Consumption 100 mA (4 ch)
    200 mA (8 ch)
    powered by a computer USB port
    Dimensions 4 channels : 135 mm x 58mm x 21 mm
    8 channels : 135 mm x 70 mm x 21 mm
    Mass 4 channels : 100 g
    8 channels : 200 g
  • Optogenetics TTL Pulse Generators (4 ports)
    Optogenetics TTL Pulse Generators (8 ports)
    Optogenetics TTL Pulse Generator
      User Manual