TDT RZ2, Manual

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System 3 9-7
MZ60 MicroElectrode Array Interface
General Tips
When recording signals make sure that the PZ5 digitizer is not connected to the
charger as this will induce mains interference in your recordings.
Make sure there are no power strips or AC power sources anywhere near the MZ60
setup. Power strips will induce mains interference into your recordings. Also minimize
electrical interference from other electrical devices (50-60 Hz and their harmonics).
We recommend that the MZ60 and PZ5 are approximately 1 meter from computers,
oscilloscopes, RZ and RX devices and other electronic equipment.
Make sure there is no liquid on the MEA plate contacts. Clean the contacts gently
with isopropyl alcohol to assure a clean connection.
Make sure the MZ60 knob is oriented in the correct position. If the MZ60 top is not
tight enough, open the MZ60 and ensure that the MEA plate is seated correctly in
the MZ60 housing. As you close the MZ60 top ensure that all of the gold pins are
touching the MEA electrode dish contacts.
Make sure that all of the spring-loaded contact pins are not stuck in a compressed
position. If a pin becomes stuck, use a pair of forceps or small pliers to gently pull
the pin out.
MZ60 Noise Floor is Too High
If 50-60 Hz hum (caused by mains voltage sources) is prevalent in your
recordings, make sure that the common ground wire is making contact with the liquid
in the MEA.
Noisy Single Electrode Channels
Large noise signals may be a sign of a bad electrode contact or pin. To test the
electrode contact, rotate the MEA plate and see if the noise follows the MZ60
channel or the electrode.
If the electrode contact is affected you may remedy the problem by cleaning the
MEA contact sites with a cotton swab and some pure alcohol (100%). If the
problem persists after cleaning the MEA electrode contacts, the contacts are damaged
beyond repair and the MEA plate must then be replaced.
MZ60 Technical Specifications
Stimulus Input Channels
Up to 60 (0.75 mm female input pin)
Analog Input Channels
Up to 60
Input Impedance
10 14 Ohms
Gain
Unity
Compatible MEAs
Standard MEA Arrays 49 x 49 mm