User's Manual

100 Operator’s Manual ZM-520PA/521PA/530PA/531PA
Defibrillation-proof: ECG input protected against 400 Ws/DC 5 kV
IEC 60601-2-27 17.101 complied
ECG recovery time after defibrillation: within 10 s
Electrode condition: Displays CHECK ELECTRODES message
Tall T-wave rejection capability: Complies with the heights of T-waves from 0 to 1.2 mV
IEC 60601-2-27: 2005 50.102.17 complied
Heart rate averaging: Calculated by using the most recent 8 beats.
Heart rate meter accuracy and response to irregular rhythm:
Ventricular bigeminy (Test waveform name: aami3a*):
80 bpm
Slow alternating ventricular bigeminy (Test waveform
name: aami3b*): 60 bpm
Rapid alternating ventricular bigeminy (Test waveform
name: aami3c*): 108 bpm
Bidirectional systoles (Test waveform name: aami3d*):
88 bpm
* The test waveforms can be download at http://www.
physionet.org
Response time of heart rate meter to change in heart rate:
HR change from 80 to 120 bpm: 4 to 8 seconds
HR change from 80 to 40 bpm: 11 to 15 seconds
Pacemaker pulse rejection capability, without overshoot:
Complies with the amplitudes of pacemaker pulses ±2 to
±700 mV and widths 0.1 to 2 ms (specified in IEC 60601-2-
27: 2005 50.102.13)
Pacemaker pulse rejection capability, with overshoot:
Overshoot amplitudes and time constants of ±0.12 mV/100
ms to ±2 mV/4 ms (As defined by method B of IEC 60601-
2-27: 2005 50.102.13, this corresponds to the pacemaker
pulses amplitudes and widths of ±4 mV/2 ms to amplitudes
±80 mV/0.1 ms.)
ECG display and heart rate count
Frequency characteristic: filter on: 1 to 18 Hz, filter off: 0.05 to 60 Hz
Heart rate detection method: Average
QRS detection: 70 to 120 ms: amplitude ≥ 0.5 mV, rate 30 to 200 beats/min
40 to 120 ms: amplitude ≥ 0.5 mV, rate 30 to 250 beats/min
Heart rate counting range: 0, 15 to 300 beats/min
Heart rate counting accuracy*: ±2 beats/min, (0, 15 to 300 beats/min)
* Essential performance of this transmitter
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