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General Overview

(a) 4-channel Generator

(b) 8-channel Generator

Figure 1.1: Optogenetics TTL Pulse Generator

The Doric Optogenetics TTL Pulse Generator (OTPG) allows the modulation of pulse signal trains as well as their triggering.

The generator connects to a computer using a USB-B cable, while each channel can be connected to a device using a

BNC cable. The most commonly used devices are LED Drivers, Laser Drivers and Shutters. This allows the coordination

between many input/output signal between many different devices.

The generator comes in 4-channel (Fig. 1.1a) and 8-channel (Fig. 1.1b) models. For the 4-channel OTPG, all channels

can either be used as an output, to deliver a pulse train, or as an input, to receive trigger signals. For the 8-channel

OPTG, only channels 5-8 can be used as inputs (Fig. 1.2). The OTPG is controlled using the Doric Neuroscience Studio (see

chapter 2).

Figure 1.2: Input/Output Channels