1
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 trig-
gering. 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
. It can be used to
coordinate between many input/output signal of different devices.
The generator comes in 4-channel (Fig.
) and 8-channel (Fig.
) 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, a maximum of four of any ports can be used as inputs and all ports all can be used as outputs. The OTPG is
controlled using the
Doric Neuroscience Studio
(see chapter
3
