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Millivolt ECG Signal
The SRA is connected to a three-electrode set to provide direct, highly accurate
measurements in chronic or acute experiments.
It automatically samples the millivolt electrical signal from the leads attached
to a research animal, and instantaneously analyzes the ECG waveform to derive
12 measures of heart electrical activity, helping define nomal activity and
detect and quantitate the occurrence of heart arrythmias.
Histogram Graphs
When connected to a computer via the Digi-Med System Integrator, the SRA provides
graphical histograms, visual representations of the frequency distribution
of certain ECG variables. Three hisotgrams are maintained: All R-R Intervals,
Normal R-R Intervals, and All QRS Durations.
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Variables Measured
* Heart Rate
* Last R-R Interval
* Avg. Normal R-R Interval
* Avg. Abnormal R-R Interval
* Avg. Duration of Normal QRS Complexes
* Avg. Duration of Abnormal QRS Complexes
* Percent Abnormal QRS Complexes
* Percent Duration of Abnormal QRS Complexes
* Number of Groups of Abnormal QRS Complexes
* Avg. duration of Abnormal QRS Groups
* Duration of Longest Abnormal Group
* Duration of Shortest Abnormal Group |
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Specifications
Dimensions: 5.75 in high, 10 in wide, 9.5 in deep, incl. cable clearance.
Weighs under 9 lb.
Input Voltage: ± 10 Volts
Frequency Response: 125 cycles/ second after amplification of microvoltages
from ECG, followed by microprocessor sampling at 1,000 Hz and front panel
display at half-sec intervals.
Balance and Calibration: Push-button electrical positioning and scientific
unit calibration with analyzer retention of factors even when turned off and
un-plugged.
Electrode Set: Research-class three-electrode lead set with alligator
clips.
Warranty: One-year limited warranty.
Options
Digi-Med System Integrator: Soft-ware, plug-in board and cables to
link one or more analyzers in a computerized multi-channel system.
Printer: 80-column thermal printer and cable.
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