S10/S12/S10A/S12A Patient Monitor User’s Manual
9
IEC 60601-2-27.
Lead-off detection
current
Measuring electrode: <100nA
Driving electrode (RL): <1 uA
Tall T-wave
rejection capability
1.5mV
HR averaging
method
Under normal circumstances, the 12 most recent RR intervals
are averaged to compute the HR.
If the last 3 consecutive RR intervals are greater than 1200ms
(i.e., HR is less than 50bpm), the 4 most recent RR intervals are
averaged to compute the HR.
The HR value displayed on the monitor screen is updated every
second.
Response to
irregular rhythm
Meet the requirements of Clause 201.7.9.2.9.101 b) 4) of IEC
60601-2-27.
The heart rate value displayed after the 20-seconed stabilization
period is:
Waveform 3a (Ventricular bigeminy): 80bpm;
Waveform 3b (Slow alternating ventricular bigeminy): 60bpm
Waveform 3c (Rapid alternating ventricular bigeminy): 120bpm
Waveform 3d (Bidirectional systoles): 90bpm
Response time to
heart rate change
HR change from 80bpm to 120bpm: < 10s.
HR change from 80bpm to 40bpm: <10s.
Time to alarm for
Tachycardia
<11s
Pace pulse markers
Amplitude: ±2mV~±700mV
Pulse width: 0.1~2.0ms
Pacemaker pulse
rejection capability
without overshoot.
Rejection of pacemaker pulses with amplitudes from ± 2 mV to
± 700 mV and widths from 0.1ms to 2.0ms. Heart rate
calculation should not be affected.
Minimum slew rate
for pacing pulse
detection.
12.5V/s ± 20%
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