Appendices
20-8
A.8 ECG Specifications
Lead type
3-lead (1 channel):
5-lead (2 channels):
12-lead (8 channels):
I, II, III
I, II, III, aVR, aVL, aVF and V
I, II, III, avR, avL, avF, V1-V6
Lead naming style AHA, EURO
Sensitivity selection
1.25mm/mV (×0.125), 2.5mm/mV (×0.25), 5mm/mV (×0.5),
10mm/mV (×1), 20mm/mV (×2) and auto
Sweep speed 12.5mm/s, 25mm/s, 50mm/s
Bandwidth (– 3dB)
Diagnostic mode:
Monitor mode:
Surgery mode:
0.05 to 100Hz (12-lead: 0.05 to 150Hz)
0.5 to 40Hz
1 to 20Hz
Diagnostic mode:
Monitor mode:
Surgery mode:
≥90 dB (12-lead: >95 dB)
≥105 dB
≥105 dB
Common mode rejection
(The notch filter is turned off.)
Differential input
impedance
≥ 5MΩ
Input signal range ±8mV (peak-to-peak value)
DC offset voltage ±300mV (12-lead: ±500mV)
Patient leakage current < 10uA
Recovery time after
defibrillation
< 3s
Calibration signal
1mV (peak-to-peak value), precision: ±5%
HR
Measurement range
Neonate:
Pediatric:
Adult:
15 to 350 BPM
15 to 350 BPM
15 to 300 BPM
Resolution 1 BPM
Precision ±1BPM or ±1%, whichever is greater.
Sensitivity 200μV (lead II)
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