Medac Specifications and Software

MEDAC System/3
Software Instrumentation and Specifications

SOFTWARE

Features the Brief Physiological Stress Profile and User Defined Profiling for standardized assessment of autonomic nervous system (ANS) and skeletal muscle reactivity.
Easy to use Protocol Manager saves general or patient specific procedures.
Report Generator produces graphs and tables for all physiological monitoring and biofeedback sessions, including mean, standard deviation, min/max, and detailed data.

INSTRUMENTATION

Photoplethysmograph (PPG) monitors the blood volume pulse wave for tracking heart rate and relative changes in peripheral blood flow (pulse height).
Two or four channels of surface EMG (Muscle activity) using the Active Electrode, a wide-band preamplified sensor that removes artifact and may be used without gel.
Two / Three channels of DC measures (TEMP & RESP) for any combination of skin temperature and respiration.
Electrodermal Activity - Skin Conductance Level (SCL) and Response (SCR).

SPECIFICATIONS

PPG	Emitter Radiant Output: 880 nm., radiant power compensated for ambient illumination, 3 mW. max. Dynamic Range: > 90 dB. Bandwidth: 0.2-35 Hz., sub critically damped. Effective Illuminated Area: 2 cm².
EMG	Calibrated EMG Range: 0.01-1000 µV. Input Bias Current: <2.0 Picoamperes. Differential Input impedance: >1,000,000 M Ohms. Common Mode Rejection: 150 dB (60Hz). Bandwidth: 33-200 Hz. (60 Hz. notch) 18 dB/oct. Noise: Less than 0.05 µV. (inputs shorted). Detector: Log power detector, 250 mS. true avg.
TEMP	Calibrated Measurement Range: 60-100 °F. Resolution: 1/400 °F. Absolute Accuracy: Better than +/-0.25 °F over calibrated Measurement Range. Better than +/-0.1 °F @ 95 °F. including thermistor inter changeability. Thermal Time Constant: 320 mS. (standard sensor, water plunge).
EDA	Calibrated Skin Conductance Range: 0.8-50 µS/cm² Sensor: gold plated brass, 2.5 cm² effective area, single ended configuration. Measurement Technique: Constant Current Conductance A.C. log, 5 S. time constant, 3 µA/cm² constant current excitation. Filters: 12 Hz. low pass, 18 dB/oct. (60 Hz. notch).
RESP	Belt attached, pressure sensitive force transducer.
AUDIO	Inputs: Stereo line level inputs. 1V RMS nom. 3.5 mm. phone jacks. Outputs: Stereo output for 8 Ohm speakers, headphones. 2 W/ch. @ 0.05% distortion. 3.5 mm. phone jack.
OUTPUTS	Analog outputs suitable for connection to chart recorders, oscilloscopes, etc. Full optical isolation for up to to 8 channels, 7500V. (A.C. 5S., <10 pA. leakage @ 120 VAC). DB15 connector.
TRIGGERS	Two program-activated triggers for external devices including muscle stimulators (2.5 mm phone jacks).
I/O	Interface card resides in computer (1/2 size ISA card) and provides 8 simultaneous channels of A/D conversion with constant 14 bit resolution, 50 µS/channel.
POWER	Sealed gel-cell rechargeable battery, 3 A/hr. 30 hrs. typical between charges.
CONSOLE	Size: 14.4"W x 10.2"D x 4.3"H. Weight: 9 lbs.
REQUIRES	IBM or compatible computer with 640k RAM, hard disk drive, ISA standard card slot, VGA (high res. colour) video card and monitor.

Specifications subject to change without notice.

MEDAC SYSTEM/3

MEDAC SYSTEM/3 RENTALS