3-10
Trigger indication There will be an audible beep on every beat captured.
Heart Rate Averaging The average Heart Rate is computed in line with the ANSI/AAMI
EC13 Section 4.1.2.1 d) as follows:
The average heart rate is calculated on the basis of the mean
RR-interval of the last 16 beats, unless the heart rate calculated
using the last 4 beats is less than or equal to 48, then this rate is
used.
The displayed Heart Rate is updated once per second.
Heart Rate Meter Accuracy
and Response to Irregular
Rhythm
When tested in accordance with the ANSI/AAMI EC13 Section
4.1.2.1 e), the indicated heart rate after a 20 second stabilization
period is:
Figure 3a (Ventricular Bigeminy) -80±1 bpm
Figure 3b (Slow Alternating Ventricular Bigeminy) -60±1 bpm
Figure 3c (Rapid Alternating Ventricular Bigeminy) -120±1 bpm
Figure 3d (Bi-directional Systoles) -90±2 bpm
Response time to heart rate
changes
Meets the requirement of ANSI/AAMI EC13 Section 4.1.2.1 f).
Less than 11 sec for a step increase from 80 to 120 BPM
Less than 11 sec for a step decrease from 80 to 40 BPM
When tested in accordance with ANSI/AAMI EC13 Section
4.1.2.1 g, the response time is as follows.
Response time of tachycardia
alarm
Figure 4ah – range:
4a – range:
4ad – range:
Figure 4bh – range:
4b – range:
4bd – range:
4.30 to 5.34s, average: 4.75s
3.94 to 5.92s, average: 4.69s
4.28 to 5.18s, average: 4.78s
3.57 to 8.22s, average: 4.83s
3.09 to 4.11s, average: 3.64s
3.20 to 4.52s, average: 4.09s
Tall T-Wave Rejection When tested in accordance with the ANSI/AAMI EC13 Section
4.1.2.1 c), the heart rate meter will reject all T-waves with
amplitudes less than 1.2 mV, 100 ms QRS, a T wave duration of
180ms and a Q-T interval of 350 ms.
Pace pulse
Pace pulses meeting the following conditions are marked by the
PACE indi cator.
Pulse indicator
Amplitude:
Width:
Rise time:
±4 to ±700 mV (3/5-lead)
±2 to ±700 mV (12-lead)
0.1 to 2 ms
10 to 100 µs
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