Owner’s Guide
38
The Neuro Amp
The Neuro Amp EX [FE285] is designed to allow the PowerLab system to perform
isolated measurements of single-unit or multi-unit extracellular action potentials from
single neurons or axons, from human or animal subjects. It consists of an electrically
isolated diff erential input AC amplifier with an isolated ground connection.
It is possible to ‘daisy-chain’ multiple Neuro Amp EXs to record from separate subjects,
using separate grounds. However, it is not recommended to use more than one Neuro
Amp EX to record from a single subject or to use a Neuro Amp EX with an ADInstruments’
Bio Amp to record from a single subject (this is discussed in more detail in the next
section).
The Front Panel
The front panel of a Neuro Amp EX has an input socket and a status indicator light.
Input Socket
Status
Indicator
The Input Socket
The headstage output cable is coupled to the Neuro Amp EX front-end using a five-pin
input socket on the front panel. The pin arrangement ensures that the polarity is correct.
The input socket is physically and electrically isolated from the low-voltage mains-
supply circuitry of the PowerLab and the input connections are isolated internally by
isolation circuitry. The socket provides 7.5 V supply lines to the headstage, a protected
earth and diff erential input lines.
The Status Indicator
The status indicator light of a Neuro Amp EX is located at the bottom left of the front
panel.
When an ADInstruments application such as LabChart starts, the status indicator
should flash briefly and then remain green, indicating that the program has found the
front-end, checked and selected it, and is ready to use it. If the status indicator does not
turn on and stay on when the application starts, it is most likely that the front-end is not
connected properly.
Figure 4–1
The front panel
of the
Neuro Amp EX
WARNING:
When used
in ambient
temperatures of
38 degrees C and
above, do not
touch the Neuro
Amp enclosure
for more than
a minute
continuously.
Summary of Contents for BIO
Page 1: ...Owner s Guide BIO AND NEURO AMPLIFIERS ...
Page 18: ...Owner s Guide 16 ...
