ADInstruments POWERLAB TEACHING SERIES User Manual

PowerLab Teaching Series - Owner’s Guide
14
Audio Connector
The PowerLab 26T has an audio output to monitor the Bio Amp channels. It provides
stereo sound (using signals from Inputs 3 and 4). The 3.5 mm stereo socket can be used
with a wide range of headphones or externally powered speakers. The audio output
is particularly helpful when monitoring nerve firings, to assist in the placement of
electrodes, for instance.
I
2
C Connector
The I2C port (not on PowerLab 15T) provides power and control signals for front-ends
manufactured by ADInstruments. Many front-ends can be daisy-chained together and
connected through the I2C port, so long as there are enough analog inputs on the
PowerLab. A maximum current of 50 mA can be provided through this bus, so it should
not be used for third-party devices that require more current than that.
USB Connector
The PowerLab connects to your computer using a USB 2.0 connector and cable,
therefore your computer must have USB connectors to receive data from the PowerLab.
You can safely disconnect or reconnect a USB-connected PowerLab while the computer
remains on. However, ADinstruments so ware should not be running while you do this.
Read the details on USB in Appendix A of this guide before connecting your PowerLab to
your computer.
Digital Input and Output Connectors
The digital input and output ports (PowerLab 26T only) let you monitor and control
external devices, respectively, with the PowerLab.
The digital input monitors state changes: you can have a predefined comment
automatically inserted during recording when a digital input changes to a particular
state. The eight lines of the connector allow monitoring of up to eight devices. The digital
output can turn on and o external devices, for example pumps, relays, and indicator
lights, or can signal to some other device. The eight lines of the connector allow control
of up to eight devices.
Technical details of the digital input and output connectors are given in Appendix A.
Note that any cables connected to either the digital input or output must be less than 3
m in length in order to maintain EMC compliance.
More information on the use of digital inputs and outputs is given in the Help for the
so ware.
WARNING:
As with all audio
devices, there is a
risk of temporary
hearing damage if
used carelessly. It
is recommended
headphones are
attached to the
PowerLab audio
socket prior to
attaching the
headphones to
ears.

ADInstruments POWERLAB TEACHING SERIES Specifications

General

Brand	ADInstruments
Model	POWERLAB TEACHING SERIES
Category	Measuring Instruments
Language	English