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Страница 2: ...FOR MICROELECTRODE AC AMPLIFIER MODEL 1800 Serial __________ Date____________ A M Systems Inc PO Box 850 Carlsborg WA 98324 U S A 360 683 8300 800 426 1306 FAX 360 683 3525 http www a msystems com Version 13 0 March 2020 ...
Страница 3: ...cifications 8 Warranty and Service 9 Each Microelectrode Amplifier is delivered complete with Two Head Stage with 5 Foot Cables Six 4 Inch Electrode Connector Cables Rack Mount Hardware NOTE This instrument is not intended for clinical measurements using human subjects A M Systems Inc does not assume responsibility for injury or damage due to the misuse of this instrument ...
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Страница 5: ...ode to be measured during stimulation Impedance Mode utilizes an internally calibrated current source to allow in situ verification of electrode impedance Controls and Connectors INPUT This 9 pin connector receives the signal from the Headstage Probe for further processing Instrument Features The AC Microelectrode Amplifier Model 1800 is a two channel differential amplifier with headstage probes T...
Страница 6: ...lsewhere Actual GROUND placement depends on the application MODE This rotary switch controls the operating mode for its channel The switch allows the user to select Record Mode REC Stimulate Mode STIM or Impedance Check Mode IMP GAIN This rotary switch controls the level of signal gain for its channel while the channel is in Record Mode The switch allows the user to select from X100 X1000 or X1000...
Страница 7: ... Hz signal will be attenuated by a factor of 10 000 The Low Cut Off frequency should be selected based on the frequency content of the signal to be recorded One of the uses of this filter is to reduce slow variations or DC levels in the input signal HIGH CUT OFF This rotary switch enables the user to select the upper boundary frequency at which point the channel s input signal begins to be cut off...
Страница 8: ... be recorded The GAIN Switch should be set so that the signal at the OUTPUT connector is less than 10 V otherwise higher and or lower portions of the signal may appear cut off or flattened Stimulating When the MODE switch is placed in the STIM position stimulation current I is monitored by measuring the voltage V across an internal fixed resistor R 1 kV in series with the electrodes Since I V R an...
Страница 9: ...to be applied to the electrodes and the Probe monitors the stimulus current by measuring the voltage developed across a 1 kΩ resistor in series with the electrode In Impedance Mode an internally calibrated current is passed through the Probe to one electrode and the Probe monitors electrode impedance by measuring the voltage that develops across the two electrodes The signal from the Probe passes ...
Страница 10: ...d by the gain switch Stimulus Mode In Stimulus Mode the differential inputs of the Head stage circuitry in Stimulus Mode Probe amplifier are switched so that they are across a 1 kΩ resistor that is in series with PROBE the indifferent electrode lead At the same time the stimulus source at the STIMULUS connector is connected to the electrode leads A stimulus current from an isolated source passes t...
Страница 11: ... Input 15V Output impedance ratio 1 MΩ 0 1 V Maximum output impedance reading General Electrical 4 V or 40 MΩ Input impedance 100 000 MΩ typical Output Impedance 1 Ω Common mode rejection Adjustable to better than 80 dB Notch Filter Better than 30 dB at 60 Hz Better than 25 dB at 50 Hz Input bias current 200 pA typical DC Compliance range At least 1 V DC Output dynamic range 10 V AC minimum Low cu...
Страница 12: ... the obligations of A M Systems under this warranty During the warranty period A M Systems agrees to repair or replace at its sole option without charge to the Purchaser any defective component part of the hardware To obtain warranty service the Purchaser must return the hardware to A M Systems or an authorized A M Systems distributor in an adequate shipping container Any postage shipping and insu...
Страница 13: ...ught against you by another party THIS EQUIPMENT IS NOT INTENDED FOR CLINICAL MEASUREMENTS USING HUMAN SUBJECTS A M SYSTEMS DOES NOT ASSUME RESPONSIBILITY FOR INJURY OR DAMAGE DUE TO MISUSE OF THIS EQUIPMENT Jurisdictions vary with regard to the enforceability of provisions excluding or limiting liability for incidental or consequential damages Check the provision of your local jurisdiction to fin...
Страница 14: ...ev Date Description 7 6 30 06 Initial Document Control release 8 4 28 10 DCR201200 Warranty and Company Information 9 2 10 16 DCR 202464 Remove Calibration information 12 1 18 19 DCR 202615 Review content Add rev control to content 13 3 19 20 DCR 203316 Update warranty ...
