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Table of Contents

Safety Precautions 2

MED64 Head Amplifier Components and Functions 4

MED64 Head Amplifier Set-Up 6

Connecting the MED64 Main Amplifier to other Components 6

Signal Acquisition with the MED64 system 7

Amplifier Input-Impedance Requirements for avoiding

Signal Attenuation 7

Stimulation Using Planar Microelectrodes 8

Stimulus Artifacts and Biphasic Stimulation 8

Stimulus Current to be Applied to the Electrodes 10

Warranty 11

Specifications 11

Содержание MED-A64HE1

Страница 1: ...Product Manual MED64 Head Amplifier 64 CHANNEL HEAD AMPLIFIER P N MED A64HE1 A low noise multi electrode array system for in vitro electrophysiology...

Страница 2: ...mages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall the publisher and the author be liable for an...

Страница 3: ...e MED64 Main Amplifier to other Components 6 Signal Acquisition with the MED64 system 7 Amplifier Input Impedance Requirements for avoiding Signal Attenuation 7 Stimulation Using Planar Microelectrode...

Страница 4: ...ower cords with cuts scratches or poor connectors as this may result in fire or electric shock Excessive bending pulling or slicing of the cord should also be avoided Do not pull on the cord when you...

Страница 5: ...symbols used on equipment and documentation Environmental Conditions Indoor use Altitude up to 2000 m Temperature 5 40 C Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to...

Страница 6: ...livered via any of the 64 electrodes using the built in stimulator in the MED64 Head Amplifier Components and their functions Front panel 1 POWER Turns amplifier ON and OFF 2 STIMULUS CURRENT Selectio...

Страница 7: ...2 STIMULUS OUTPUT on the 64 CHANNEL MAIN AMPLIFIER MED A64MD1 5 CONTROL INPUT Input for control of stimulus channels Connects to the CONTROL OUTPUT on the 64 CHANNEL MAIN AMPLIFIER MED A64MD1 6 SIGNAL...

Страница 8: ...idified incubator It is connected with a cable as long as 2m without noise or signal attenuation The MED64 system does NOT usually require a Faraday cage or vibration isolation table necessary for con...

Страница 9: ...have very low impedances at 1kHz 10 k for 50 m electrodes 40 k for 20 m electrodes The impedances are small even at low frequencies as seen in Fig 2 Thus the input impedance of 100 M for the MED64 Hea...

Страница 10: ...field potentials Vf change according to the output current Is as seen on the right in the Fig 4 Stimulus Artifacts and Biphasic Stimulation During stimulation signals stimulus pulses are recorded at...

Страница 11: ...ositive components as seen in Fig 5 When biphasic stimulation is applied the electrode is charged and discharged quickly However when mono phasic stimulation is applied the electrodes need longer time...

Страница 12: ...s 50 000 pF for 50 x 50 m electrodes 22 000 pF for 20 x 20 m electrodes allowing stimulation with current amplitudes up to 200 A for 0 2 msec duration for each phase is 0 1 msec DO NOT use stimulus cu...

Страница 13: ...n maladjustment of user controls improper maintenance modifications or service by anyone other than AMS or damage attributable to acts of God Specifications Amplifier Stimulator General Power supply u...

Страница 14: ...ntific Inc Saito Bio Incubator 209 7 7 15 Saito asagi Ibaraki Osaka 567 0085 Japan Phone 81 72 648 7973 FAX 81 72 648 7974 http www med64 com support med64 com Manufactured by Alpha MED Scientific Inc...