PLUGSYS Microelectrode Amplifier Module (MEA)

PLUGSYS Microelectrode Amplfier Module (MEA)

Permits direct measurement of intracellular or extracellular potentials (with the aid of an included preamplifier headstage)

Item# Description U.S. List Price Quantity
73-1773 Microelectrode Amplifier Module (MEA), including Headstage 73-2665
73-2665 Headstage Preamplifier for Microelectrode Amplifier Module (MEA)
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The Microelectrode Amplifier Module (MEA) is a universal single-channel, easily operated microelectrode amplifier for physiological and pharmacological research. With the aid of the separate preamplifier (headstage) it permits direct measurement of intracellular or extracellular potentials.

The compact MEA module incorporates extensive technology and offers, in addition to its excellent amplifier performance, modern extra facilities such as adjustable output filter, calibration generator, audio monitor and LED bar graph for audible and visual signal monitoring, microelectrode function test (resistance measurement), adjustable buzz frequency, capacity compensation and zero balance. Optionally the MEA can be provided with special headstages.

Headstage Preamplifier for Microelectrode Amplifier Module (MEA) 73-2665

Important Note for Ordering: The Headstage Preamplifier (73-2665) can only be used in conjunction with the  HA-HSE Microelectrode Amplifier (73-1773).The headstage comes with the amplifier and does not need to be ordered separately.

Headstage Specifications

Construction                         
Shielded metal case with microelectrode holder
integral and mounting rod, 2 mm socket for bath
reference and screen connection for central ground;
headstage is independent of MEA amplifier used and
does not require adjustment
Mounting  By 8 mm dia. support rod and integral microelectrode
holder suitable for mounting of conventional
micromanipulators as replacement against standard
microelectrode holder
Microelectrode Resistance       
Suitable for microelectrodes in range of 1 to 100 MΩ
Input Circuit Fully integrated electrometer amplifier with driven
screen, boot-strapped supply and capacity
compensation
Input Current  Compensated to zero
Coupling Resistor 1 GΩ
Capacity Compensation Adjustable over 0 to 8 pF
Frequency Range DC to 75 kHz (-3dB)
Connecting Cable Signal and supply cable 1.95 m long with 8-pin binder
or Amphenol-Tuchel plug to suit MEA microelectrode

Specifications73-177373-2665
Capacity CompensationDC to 30 kHz (-3dB)Adjustable over 0 to 8 pF
Connecting CableLED bar graph with 30 LEDs for visual monitoring of applied signal (7.5 mV per LED referred to input)
For accurate zeroing bar graph range can be expanded by key (magnifier function) to 1.5 mV per LED referred to input
Signal and supply cable 1.95 m long with 8-pin binder or Amphenol-Tuchel plug to suit MEA microelectrode amplifier
ConstructionAudible monitoring system for measurement signal using monitoring tone whose frequency is modulated according to signal amplitude;
loudness and base frequency are individually adjustable by trimmer on front panel
Screened metal case with microelectrode holder integral and mounting rod, 2 mm socket for bath reference and screen connection for central ground; headstage is independent of MEA amplifier used and does not require adjustment
Coupling ResistorAC feed through microelectrode to assist piercing cell membrane during microelectrode insertion; buzz frequency adjustable with 16-position switch between 10 Hz and 10 kHz to suit actual requirements1 G?
Frequency RangeGenerator for signal adjustment to computing amplifier or recorder; pressing CAL key injects complex calibration signal consisting of values 0 V, -100 mV and DC to 75 kHz (-3dB)
Input Circuit10x (fixed)Fully integrated electrometer amplifier with driven screen, boot-strapped supply and capacity compensation
Input CurrentThrough separate preamplifier (headstage) for direct intracellular or extracellular potential recordingCompensated to zero
Microelectrode ResistanceContinuously adjustable between 0 and 8 pFSuitable for microelectrodes in range of 1 to 100 M?
Mounting8-pin binder or Amphenol-Tuchel socket with screw lockBy 8 mm dia. support rod and integral microelectrode holder suitable for mounting of conventional micromanipulators as replacement against
standard microelectrode holder
Power SupplyCheck of microelectrode by feeding in (via the headstage) constant current for apprx measurement of instantaneous electrode
resistance.
From MEA Microelectrode Amplifier Type 695
DOCUMENT DESCRIPTION
73-1773_MEA_BA1E.pdfPLUGSYS Micro Electrode Amplifier (MEA) & Headstage User's Manual, Version 1.1