Welch Allyn Connex ECG Module, Directions For Use Manual

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ECG specifications
Characteristic Specification
Heart rate detection range 20 to 300 beats per minute
Heart rate accuracy ±3 beats per minute or ±3%, whichever is greater
QRS detection amplitude
≥
0.3 mV and
≤
5.0 mV with QRS width of between 40 ms and 120 ms
Tall T wave rejection Rejects Tall T waves less than 1.4 mV
Heart rate meter accuracy and response to
irregular rhythm
The Heart Rate shall stabilize within 20 seconds and report the following
Heart Rates for data sets A.1 to A.4 with accuracy of ±5 BPM:
A.1 Ventricular bigeminy 80 BPM
A.2 Slow alternating ventricular bigeminy 60 BPM
A.3 Rapid alternating ventricular bigeminy 120 BPM
A.4 Bidirectional systoles 90 BPM
Response time of heart rate meter to
change in heart rate
Increasing from 80 to 120 beats/minute: 10 sec
Decreasing from 80 to 40 beats/minute: 10 sec
Time to alarm for tachycardia Waveform B1
Amplitude – Average time to alarm:
•
0.5 mV – 10 seconds
• 1.0 mV – 10 seconds
• 2.0 mV – 10 seconds
Waveform B2
Amplitude – Average time to alarm:
•
1.0 mV – 10 seconds
• 2.0 mV – 10 seconds
• 4.0 mV – 10 seconds
Data storage capacity 24 hours
Pacemaker detection
±2 mV to ±700 mV amplitude; 0.5 ms to 2.0 ms pulse width per EN
60601-2-27: 2011.
Rejects pacemaker signals, including double-paced signals, with over/
undershoot with the exception of pacemaker signals having an overshoot
with a time constant from 4 ms to 100 ms.
Note For leads I, II, III only. The module does not detect or
display pacemaker pulses on lead V.
A/D bit resolution
0.5
μ
V
Dynamic range
±300 mV (95% gain accuracy)
Sampling rate
250 ±2% samples per second
30 Specifications Welch Allyn Connex
®
Devices ECG Module