EEG/EMG AMPLIFIERS - Features - SA INSTRUMENTATION CO.

Features


TECHNOLOGY:	Our Bioamps are all custom designed to comply with the investigators requirements and specifications. As a consequence, our designs are constantly reviewed and the best technology included into each Bioamp order. We can also upgrade & modify existing systems when investigation requirements change; saving hard-to-find research funds; SAI IS THE ONLY BIOAMP SUPPLIER ROUTINELY OFFERING THESE SERVICES.
CHANNEL CROSS TALK:	An important specification frequently omitted by other manufacturers, probably for good reason. SAI crosstalk is essentially negligible @ >80 dB (10000:1).
EXPANDABLE:	You may choose an option for adding additional channels at the time of order; existing systems can also be reworked to accept additional channels.
PORTABLE:	(4-26 lbs.) with circulating / rechargeable battery power.
EFFICIENT:	ULTRA energy efficient: 1.2 W for a 32 channel system the typical power consumption of a two D-cell flashlight!
AC/DC RESPONSE:	Frequency response down to 0.01 Hz is now practical with our proprietary circuitry which recovers from open-leads in just seconds. Additionally, a DC option is now available which includes three selectable modes of baseline restoration: local reset, TTL remote reset, and periodic reset with local control of the reset interval, simplifying analysis of VLF data. (DC mode adds no data noise of any kind.)
RECOVERY TIME:	Special circuitry in each channel functions automatically to reduce "lead off" recovery time to just a few seconds when in the 0.01 Hz HPF point; and even faster when higher frequency HPF points are selected.
QRS BLANKING:	QRS (ECG) blanking / fill-in option available to eliminate contamination of EMG's by the QRS event.
LED MONITORS:	LED monitors provide a continuous display of the integrity of each electrode connection; if the monitors are off, accurate data is being acquired !! Impedance measurements are optional with SAI Bioamps.
BUILT IN CALIBRATION TEST SIGNAL:	Precision calibration test signals facilitate accuracy and performance tests; sine, square & pulse are available, Local &/or remote control.
GOLD CONTACTS:	Gold contacts are utilized in all IC sockets and at all critical connections for stability and reliability; all IC's are in sockets for serviceability.
CHANNEL COUNT:	Unlike many other manufacturers, we offer only Custom Designed Bioamps in many configurations from 8 to 512+ channels. These BIOAMPS are expandable and upgradeable so you're never forced into obsolescence.
BATTERY POWERED:	All our Bioamps utilize circulating / rechargeable batteries. A typical 32 channel system consumes the power of a two D-cell flashlight !! Batteries can be supplied which will power the BIOAMP from a standard 15 hrs up to 60 hrs or more. Battery power reduces data artifact and adds another safety barrier between the subject and the AC power.
ISOLATION:	In addition to being battery powered our isolated BIOAMPS feature a 3500 Vpk optical & magnetic isolation barrier and are designed to conform with AAMI / ANSI leakage standard: ES-1, 2.1 "an electro-mechanical apparatus with isolated connections". Signal output and digital I / O connections can be made to AC powered and grounded computers and other data collection devices without restriction.
REMOTE CONTROL OPTION:	This option allows control of the BIOAMP via front-panel controls and by a computer through a parallel-port cable. GAIN, HPF, LPF parameters and Calibration modes can be selected by the computer by sending specific 8-bit byte code instructions. The port is compatible with TTL and Cmos logic.
MISCELLANEOUS:	Options supplied include SCR (AC), SCL (DC), temperature, pressure, oximeter input, respiration, finger and ear pulse, movement/vibration, remote control, E-Cap/loose-lead electrode headbox with digital impedance meter, and the easy-to-use electrode-cap system by ELECTRO-CAP(TM).