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The Ugo Basile Fear Conditioning Cage external digital outputs

Introduction

There are four external TTL outputs available on an Ugo Basile Fear conditioning Cage. TTL is a standard for digital signals and many devices that accept digital inputs use TTL logic levels. For example, some pellet dispensers will dispense a pellet in response to a TTL 'pulse' on their input.

The Fear conditioning cage TTL outputs specification

Connecting an output to something

To control a device that has a TTL level input, you simply need to connect an output (and ground) to the device's input.

If you want to control something that doesn't have a TTL level input, for example, you want to switch a lamp on and off, then you will need to use some additional circuit which will be controlled by the TTL output. This might not be as complicated as it sounds; for example, a Google search for 'TTL Relay Board' will probably turn up a number of suitable and inexpensive devices.

Using an output within an experiment

In order to use an output in an experiment, it must be included in the protocol. This is a simple process and is described in detail in the Setting up an on/off output topic.

As well as including the output in the protocol, you will probably also want to include one or more procedures. For example, you could use a procedure to determine when the animal freezes for a certain duration and then turn the output on.

See also:

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ANY-maze help topic T1261