Artifact Suppressor Diff Input
More Images
Catalog Number: 40-75-6
The Artifact Suppressor Module provides a convenient method for eliminating artifacts produced by electrical stimulation.
The Artifact Suppressor Module provides a convenient method for eliminating artifacts produced by electrical stimulation.
Used as preamp or second stage
Eliminates stimulus artifact
Variable blocking time
Artifacts produced by electrical stimulation can be troublesome because as it saturates high gain stages of amplification behind the initial preamplifier, it produces a slowly decaying potential as the amplifier unsaturates. The Suppressor features a high resistance, differential input which can be connected directly to EEG, EMG, or even microelectrodes or it can be connected between a preamplifier and high gain amplifiers. The instrument operates using a clamping circuit triggered by the stimulator. The circuit samples the output of the preamplifier and holds it for a time period continuously adjustable using the Blocking Time control. The control is adjusted to eliminate as much of the stimulus artifact as needed.
Input: Differential, AC coupled (1 Hz)
Common Mode Rejection: >60db at 60Hz
Input Range: +1V
Input Impedance: >109 Ohms
Output Range: +10V @ 10KHz
Gain: x20 or x100
Output Impedance: 50 Ohms max., short circuit protected
Trigger: TTL level, positive edge transition with a pulse width of 50usec (minimum). Trigger pulse amplitude limits are -1V and +15V, absolute maximum
Blocking Time: .15mSec to 5mSec +10%
Power Requirements: +/-15VDC, 50mA,
Dimensions: 2 3/4"w x 7"h x 9"d (18 x 7 x 23cm), 1lb. (450g)
40-75-6 Artifact Suppressor Differential Input
