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ECG specifications
Leads available
QRS detection range
QRS detection width (Q to
S)
Defibrillation protection
Recovery time
Input impedance
Common mode rejection
Tall T wave rejection
ECG leads off detection
Filter modes
50/60 Hz
Monitoring filter
ST filter
Dagnostic filter
Heart rate
Measurement range
3-lead configuration: I, II, III
5-lead configuration: I, II, III, aVR, aVL,
aVF and VA
0.5 to 5mV
40 to 120 ms
5000 V, 360 J
<5 s
Common mode > 10 M Ω@ 50/60 Hz
Differential > 2.5 M Ω from 0.67 to 40
Hz
90 dB minimum at 50 Hz
>1.4 mV
Active patient electrode: <30 nA
Reference electrode: <300 nA
0.5 to 40 Hz
0.05 to 40 Hz
0.05 to 150 Hz
30 to 300 bpm
Measurement accuracy
resolution
Heart rate response time (IEC 60601-2-27 201.7.9.2.9.101 b) 5)
Step increase from 80 to
120 bpm
Step decrease from 80 to
40 bpm
The heart rate calculation operates with irregular rhythms of IEC
60601-2-27 201.7.9.2.9.101 b) 4), the heart rate after a 20 second
stabilization period is:
Figure 3a
Figure 3b
Figure 3c
Figure 3d
Heart rate averaging computation (IEC 60601-2-27 201.7.9.2.9.101
b) 3)): Average of 10 second median values
The average time and time range ( ) to alarm (V Fib or V Tach) for
tachycardia waveform are as follows (IEC 60601-2-27
201.7.9.2.9.101 b) 6))
Figure 4a halved
amplitude:
Figure 4a
normal amplitude:
Figure 4a
doubled amplitude:
137
±5 % or ±5 bpm, whichever is greater
1 bpm
average 6.9 s (6.5 to 7.5 s)
average 8.2 s (7.6 to 10.0 s)
80 bpm
59 bpm
122 bpm
117 bpm
9.9 s (8.4 to 11.5 s)
7.1 s (5.8 to 8.2 s)
4.4 s (4.2 to 4.6 s)
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